Deng-Ke Yang

Deng-Ke Yang

Materials Science
Professor
Campus:
Kent
Contact Information
Email:
dyang@kent.edu
Phone:
330-672-2565

Biography

Deng-Ke Yang is a professor in the department of physics and the materials science program in advanced materials and Liquid Crystal Institute at Kent State University. He received his B.S. in physics from Tsinghua University in China in 1984 and his Ph.D. in physics from the University of Hawaii in 1989.  He joined Kent State University in 1989. His main research interest is in liquid-crystal physics and devices. He has coauthored three books and 10 book chapters. He also has published more than 200 papers in refereed journals and SID proceedings. He holds more than 30 patents. He received the Society for Information Display’s Special Recognition Award in 2005 for his pioneering work on polymer-stabilized cholesteric devices and reflective displays. He was elected a fellow of the SID in 2007 for his significant scientific and technological contributions to bistable, reflective cholesteric displays and to polymer-stabilized cholesteric devices, and for his outstanding contributions to education in the field of liquid-crystal technology. He received SID’s Slottow-Owaki Prize in 2017 for his outstanding contributions to the education and training of students and professionals in the field of liquid-crystal displays. He also received Kent State University’s annual Outstanding Research and Scholarship Award in 2017. He has been named one of the world’s top 2% of scientists by Stanford University.

Field of Research

Liquid Crystal and Polymer Physics, Liquid Crystal Displays and smart switchable window

 

Professional Affiliations

American Physical Society, Society for Information Display, International Liquid Crystal Society

 

Award

  • Kent State University Excellence award in invention

For invention of bistable reflective cholesteric liquid crystal display and polymer stabilized liquid crystal devices, 2000.

  • Information Display Society Special Recognition Award

For pioneering work on polymer stabilized devices and reflective displays, 2005.

  • Information Display Society Fellow

For significant scientific and technological contributions to bistable, reflective cholesteric displays and to polymer-stabilized cholesteric devices, and for his outstanding contributions to education in the field of liquid crystal technology, 2007.

  • Information Display Society, Slottow-Owaki Prize, 2017

For contributions to the education and training of students and professionals in the field of liquid-crystal displays.

  • Outstanding research and scholarship award, Kent State University, 2017.

 

Publications

Book

1. S.-T. Wu and D.-K. Yang, “Reflective liquid crystal displays,” John Wiley & Sons, Ltd., (2001).

2. D.-K. Yang and S.-T. Wu, “Fundamentals of liquid crystal devices,” John Wiley & Sons, Ltd., (2006).

3. D.-K. Yang and S.-T. Wu, “Fundamentals of liquid crystal devices,” 2nd Edition, John Wiley & Sons, Ltd., (2014).

4. D.-K. Yang and S.-T. Wu, “Fundamentals of liquid crystal devices,” China Scientific Publication Co., (2016).

 

 

Chapters in book

1. D.-K. Yang, L.-C. Chien and Y.K. Fung, "Polymer stabilized cholesteric textures: materials and application,” in Liquid crystals in Complex Geometries Formed by Polymer and Porous Networks, ed. G.P. Crawford and S. Zumer, Taylor & Francis, London (1996), Chapter 5, 103-143.  Invited.

2. D.-K. Yang, X.Y. Huang and Y.-M. Zhu, "Bistable cholesteric reflective displays: Material and Drive Schemes," Annual Review of Materials Science, 27, 117-222 (1996).  Invited.

3. D.-K. Yang, “Reflective cholesteric liquid crystal displays,” in Mobile Displays, ed. A. Bhowmik, Z. Li and P. J. Bos, John Wiley & Sons, Ltd., (2008), Chapter 16, 443-466, Invited.

4. D.-K. Yang, “Polymer stabilized Cholesteric liquid crystal for switchable windows,” Liquid crystals beyond displays, ed. Q. Li, John Wiley & Sons, Ltd., (2012), Chapter 16, 505-523, Invited.

5. D.-K. Yang, “Polymer stabilized liquid crystal displays,” Progress in liquid crystal science and technology, ed. H-S. Kwok, S. Naemura and H. L. Ong,World Scientific, (2013), Chapter 25, 597-628.

6. D.-K. Yang, “Electric color tuning in polymer-stabilized cholesteric liquid crystals,” Polymer modified liquid crystals, ed. I. Dierking, Royal Society of Chemistry, (2019), Chapter 8, 166-194, Invited.

7. D-K. Yang and Q. Li, “Color-reflective LCD based on cholesteric liquid crystals,” Chapter 10, pp. 167-195, High quality liquid crystal display and smart devices, Vol. 2, ed. S. Ishihara, S. Kobayashi and Y. Ukai, The Institute of Engineering and Technology, (2019).

 

 

 

 

 

Papers published in refereed journals

  1. J.D. Miller, P.R. Battle, P.J. Collings, D.K. Yang and P.P. Crooker, "Temperature- concentration phase diagram for the blue phase of a highly chiral liquid crystal," Phys. Rev. A, 35, 3959-3960 (1987).
  2. D.K. Yang and P.P. Crooker, "Chiral-racemic diagrams of blue phase liquid crystal," Phys. Rev. A, 35, 4419-4423 (1987).
  3. M.A. Tius, X. Gu, J.W. Truesdell, S. Savariar, D.K. Yang and P.P. Crooker, "Phase diagram and preparation of CE2 enatiomer," Mol. Cryst. Liq. Cryst., 150b, 247-255 (1987).
  4. D.K. Yang and P.P. Crooker, "Blue phase III of chiral liquid crystal in an electric field," Phys. Rev. A, 37, 4001-4005 (1988).
  5. D.K. Yang, P.P. Crooker and K. Tanimoto. "Reflectivity of aligned Blue phase III of chiral liquid crystals," Phys. Rev. Lett., 61, 2685-2688 (1988).
  6. D.K. Yang and C. Vause, "Critical phenomena in side-chain nematic liquid crystal copolymer," Liq. Cryst., 4, 477-481 (1989).
  7. D.K. Yang and P.P. Crooker, "The effect of electric fields on blue phase III with negative dielectric anisotropy," Liq. Cryst., 7, 441-419 (1990).
  8. D.K. Yang and P.P. Crooker, "Field-induce texture of polymer-dispersed chiral liquid crystal microdroplets," Liq. Cryst., 9, 245-251 (1991).
  9. P.P. Crooker and D.K. Yang, "Polymer-dispersed chiral liquid-crystal color display,"  Appl. Phys. Lett., 57, 2529-2531 (1990).
  10. G.P. Crawford, D.K. Yang, S. Zumer, D. Finotello and J.W. Doane, "Ordering and self-diffusion in the 1st molecular layer at a liquid-crystal polymer interface," Phys. Rev. Lett., 66, 723-726 (1991).
  11. D.K. Yang, L.C. Chien and J.W. Doane, "Cholesteric liquid crystal/polymer gel dispersion for haze-free light shutter," Appl. Phys. Lett., 60, 3102-3104 (1992).
  12. D.-K. Yang, J.L. West, L.C. Chien and J.W. Doane, "Control of the reflectivity and bistability in displays based on cholesteric liquid crystals," J. Appl. Phys., 76, 1331-1333 (1994).
  13. D.-K. Yang, J.W. Doane, Z. Yaniv and J. Glasser, "Cholesteric reflective display: drive scheme and contrast," Appl. Phys. Lett., 65, 1905-1907 (1994).
  14. Z.J. Lu and D.-K. Yang, "Effects of chiral dopant on the performance of PDLC," Appl. Phys. Lett., 65, 505-507 (1994).
  15. W.D. St. John, W. J. Fritz, Z. J. Lu and D.-K. Yang, "Optical properties of bistable cholesteric reflective displays," Phys. Rev. E, 51, 1191-1198 (1995).
  16. Y.K. Fung, D.-K. Yang, Y. Sun, L. C. Chien, S. Zumer and J. W. Doane, "Polymer networks formed in liquid crystals,"  Liq. Cryst., 19, 797-801 (1995).
  17. X-Y. Huang, D.-K. Yang and J.W. Doane, "Transient dielectric study of bistable reflective cholesteric displays and design of rapid drive scheme," Appl. Phys. Lett. 69, 1211-1213 (1995).
  18. L.C. Chien, M.F. Nabor, U. Muller, N. Leroux, D.-K. Yang, J.W. Doane, M.N. Walz and C.M. Citano, "Recent advance in materials for polymer stabilized liquid crystals,"  Polym. Mat. Sci. Eng. 72, 492 (1995).
  19. X-Y. Huang, D.-K. Yang, P.J. Bos and J.W. Doane, "Dynamic drive for bistable cholesteric displays: a rapid addressing scheme," J. SID, 3/4, 165-168 (1995).
  20. R.-M. Ho, Y. Yoon, M. Leland, S. Cheng, D.-K. Yang, V. Percec and P. Chu, "Phase identification in a series of liquid crystalline TPP polyethers and copolyethers having highly ordered mesophase structure," Macromolecules, 29, 4528-4535 (1996).
  21. M. Xu and D.-K. Yang, "Dual frequency cholesteric light shutters," Appl. Phys. Lett., 70, 720-723 (1997).
  22. Y. K. Fung, A. Borstnik, S. Zumer, D.-K. Yang and J.W. Doane, "Pretransitional nematic ordering in liquid crystals with dispersed polymer networks," Phys. Rev. E, 55, 1637-1654 (1997).
  23. A.Y. Fuh, J.W. Doane, D.-K. Yang and L.C. Chien, "Correlation of electro-optical and Raman characteristics of polymer-stabilized cholesteric texture films," Mol. Cryst. Liq. Cryst., 304, 65-77 (1997).
  24. X.-Y. Huang, J.W. Doane and D.-K. Yang, "The transient response and dynamic drive of cholesteric liquid crystal displays," J. SID, 5/3, 179-187 (1997).
  25. J.V. Gandhi, X.-D. Mi and D.-K. Yang, "Effect of surface alignment on the configurational transitions in cholesteric liquid crystals," Phys. Rev. E, 57, 6761-6766 (1998).
  26. O. D. Lavrentovich and D.-K. Yang, "Cholesteric cellular patterns with electric-field -controlled line tension," Phys. Rev. E, 57, Rapid Communications, R6269-6272 (1998).
  27. M. Xu, F.D. Xu and D.-K. Yang, "Effects of cell structure on the reflection of cholesteric liquid crystal display," J. Appl. Phys., 83, 1938-1955 (1998).
  28.  X.-D. Mi and D.-K. Yang, "Capillary filling of nematic liquid crystals," Phys. Rev. E, 58, 1992-2000 (1998).
  29.  R.E. Kraig, P.L. Taylor, R.Q. Ma and D.-K. Yang, "Nematic order in polymer stabilized liquid crystal," Phys. Rev. E. 58, 4594-4597 (1998).
  30.  R.Q. Ma and D.-K. Yang, "Polymer stabilized cholesteric texture reverse-mode light shutter: Cell design," J. SID, 6/2, 125-130 (1998).
  31. Y.M. Zhu and D.-K. Yang, "Observation of pattern evolution during homeotropic-focal conic transition in cholesteric liquid crystals," Phys. Rev. Lett., 82, 4855-4858 (1999).
  32. R.Q. Ma and D.-K. Yang, "Optimization of polymer stabilized bistable black-white cholesteric reflective display," J. SID. 7/1, 61-65 (1999).
  33. R.Q. Ma and D.-K. Yang, "Freedericksz Transition in Polymer Stabilized Nematic Liquid Crystals,” Phys. Rev. E. 61, 1567-1573 (2000).
  34. D.-K. Yang and X.-D. Mi, “Modeling of the reflection of cholesteric liquid crystals using Jones matrix,” J. Phys. D. 33, 672-676 (2000).
  35. M. Xu and D.-K. Yang, “Electro-optical properties of dual-frequency cholesteric liquid crystal reflective display and drive scheme,” Jpn. J. Appl. Phys. 38, 6827-6830 (2000).
  36. W. G. Jang, R.-P. Sun, R. J. Twieg and D.-K. Yang, “Dichroic dye-doped bistable polymer-stabilized cholesteric-texture light valve,” J. SID. 8, 73-77 (2000).
  37. F. Zhang and D.-K. Yang, “Dynamics of evolution of Disclinations in Cholesteric Liquid Crystals,” Phys. Rev. E. 66, 041701 (2002)
  38. F. Zhang and D.-K. Yang, “Temperature-dependence of Pitch and Twist Elastic Constant in Cholesteric to Smectic A Phase Transition,” Liq. Cryst. 29, 1497-1501 (2002).
  39. F. Zhou and D.-K. Yang, “Simulation study of an e-beam addressed liquid crystal display for projection,” J. of Information Display, 3, 8-12 (2002).
  40. D.-K. Yang, “A Simulation Study of a Liquid Crystal Optical Switch Based on Total Internal Reflection,” J. Opt. A: Pure Appl. Opt. 5, 402-407 (2003).
  41. J. J. Ge, S.-C. Hong, B. Y. Tang, C. Y. Li, D. Zhang, F. Bai, B. Mansdorf, F. W. Harris, D. Yang, Y.-R. Shen, and S. Z. D. Cheng, “Assembly of photopolymerizable discostic molecules on an aligned polyimide layer surface to form a negative retardation film with an oblique optical axis,” Advanced Functional Materials, 13, 718-725 (2003).
  42. F. Zhou and D.-K. Yang, “Analytical solution of film compensated bistable twisted nematic liquid crystal displays,” J. Display Tech., 1, 217 (2005).
  43. D-K, Yang, “Flexible bistable cholesteric reflective displays,” J. Display Technology, 2, 32-37 (2006).
  44. K.-U Jeong, D.-K. Yang, M. J. graham, Y. Tu, S.W. Kuo, B. S. Knapp, F. W. Harris and S. Z. D. Cheng, “Construction of chiral propeller architectures from achiral molecules,” Advanced Materials, 18, 3229 (2006).
  45. K.-U Jeong, A. J. Jing, B. Mansdor, M. J. Graham, D.-K. Yang, M. J. Graham, F. W. Harris and S. Z. D. Cheng, “Biaxial molecular arrangement of rod-disc molecule under electric field,” Chemical Materials, 19, 2921 (2007).
  46. D.-K. Yang, Y. Yin and H. Liu, “Nematic-isotropic phase transition of binary liquid crystal mixtures,” Liquid Crystals, 34, 605 (2007).
  47. D.-K. Yang, “Review of operating principle and performance of polarizer free reflective liquid-crystal displays,” J. Soc. Inf. Display 16, 117 (2008).
  48. D.-K. Yang, K.-U. Jeong, S. Z. D. Cheng, “Structure of Liquid Crystal Droplets with Chiral Propeller Texture,” J. Phys. Chem. B, 112; 1358-1366 (2008).
  49. Ji Ma, Shawn Hurley, Zhigang Zheng, Bo Jin and Deng-Ke Yang, “Investigation of alignment direction in wide view film and rubbing angle of twisted nematic liquid crystal display mode,” Liquid Crystals, 36, 487-492 (2009).
  50. Y.-C. Yang and D.-K, Yang, “Analytic expressions of optical retardation of biaxial compensation films for liquid crystal display,” Journal of Optics A: Pure and Applied Optics, 11, 105502-105511 (2009)
  51. Rui Bao, Cheng-Mei Liu, and Deng-Ke Yang, “Smart Bistable Polymer Stabilized Cholesteric Texture Light Shutter,” Appl. Phys. Express, 2, 112401-112403 (2009).
  52. Ji Ma, Lei Shi, and Deng-Ke Yang, “Bistable Polymer Stabilized Cholesteric Texture Light Shutter,” Appl. Phys. Express, 3, 021702-021704 (2010).
  53. Y.-C. Yang and D.-K. Yang, “Electro-optic Kerr effect in polymer-stabilized isotropic liquid crystals,” Appl. Phys. Lett. 98, 023502 (2011).
  54. M. Mathews, R. S. Zola, D.-K. Yang and Q. Li, “Thermally, photochemically and electrically switchable reflection colors from self-organized chiral bent-core liquid crystals,” Journal of Material Chemistry, 21, 2098-2103 (2011).
  55. M. Mathews, R. S. Zola, S. Hurley, D.-K. Yang, T. J. White, T. J. Bunning, and Q. Li, “Light-Driven Reversible Handedness Inversion in Self-Organized Helical Superstructures,” Journal of American Chemical Society, 132, 18361-18366 (2010).
  56. Timothy J. White , Seth A. Cazzell, Alexander S. Freer, Deng-Ke Yang, Ludmila Sukhomlinova, Linli Su , Tamas Kosa , Bahman Taheri , and Timothy J. Bunning, “Widely Tunable, Photoinvertible Cholesteric Liquid Crystals”, Advanced Materials, 23, 1389–1392 (2011).
  57. Deng-Ke Yang, Book review of “Liquid crystal display” by E. Leuder, Liquid Crystal Today, 20, 62 (2011).
  58. Rafael S. Zola, Young-Cheol Yang, Deng-Ke Yang, “Limonene as a chiral dopant for liquid crystals: Characterization and potential applications,” Journal of the Society of Information Display, 19, 410-416 (2011).
  59. Q. Li, Y. Li. J. Ma, D.-K. Yang, T. White and T. Bunning, “Direct dynamic control of red, green and blue reflection enabled light-driven self-organized helical superstructure,” Advanced Materials, (2011).
  60. S. E. Hicks, S. P. Hurley, R. S. Zola, and D.-K. Yang,   “Polymer Stabilized VA Mode Liquid Crystal Display,” Journal of Display Technology, 7, 619 - 623 (2011).
  61. A. T. Juhl, D.-K. Yang, V. P. Tondiglia, L. V. Natarajan, T. J. White, and T. J. Bunning, “Ordering of glass rods in nematic and Cholesteric liquid crystals,” Optical Materials Express, 1, pp. 1536–1547 (2011).
  62. M. E. McConney, T. J. White, V. P. Tondiglia, L. V. Natarajan, D.-K. Yang, “Dynamic high contrast reflective coloration from responsive polymer/cholesteric liquid crystal architectures,” Soft Matter, 8, 318-323 (2011).
  63. V. T. Tondiglia, L. V. Natarajan, C. A. Bailey, M. M. Duning, R. L. Sutherland, Deng-Ke Yang, A. Voevodin, T. J. White, and T. J. Bunning, “Electrically induced bandwidth broadening in polymer stabilized cholesteric liquid crystals,” Journal of Applied Physics, 110, 053109 (2011).
  64. Yue Cui, Rafael S. Zola, Young-Cheol Yang, and Deng-Ke Yang, “Alignment layers with variable anchoring strengths from Polyvinyl Alcohol,” Journal of Applied Physics, 111, 063520 (2012).
  65. C. A. Bailey, V. T. Tondiglia, L. V. Natarajan, R. Bricker, Y. Cui, D. K. Yang, and T. J. Bunning, “Surface limitations to the electro-mechanical tuning range of negative dielectric anisotropy cholesteric liquid crystals,” Journal of Applied physics,111, 063111 (2012).
  66. H. Nemati, D.-K. Yang, K.-L. Cheng, C.-C. Liang, J.-W. Shiu, C.-C. Tsai, and R. S. Zola, Effect of surface alignment layer and polymer network on the Helfrich deformation in cholesteric liquid crystals,” Journal of Applied Physics, 112, 124513 (2012).
  67. K. X. Li, Z. H. Cheng, R. W. Guo, L. P. Zhang, F. F. Wang, X. J. Wu, H. Cao, H. Yang, D.-K. Yang, Broadband reflective liquid crystalline films prepared from liquid crystals with negative dielectric anisotropy,” Liquid Crystals, 39, 839 (12012).
  68. R. S. Zola, L. R. Evangelista, Y.-C Yang, and D.-K. Yang, “Surface Induced Phase Separation and Pattern Formation at the Isotropic Interface in Chiral Nematic Liquid Crystals,” Physical Review Letters, 110, 057801 (2013).
  69. S. Hicks, Y.-C. Yang, S. Hurley and D.-K. Yang, “Electric Polarization Frozen by Polymer Network in Nematic Liquid Crystals,” Soft Matter, 2013, 9 (14), 3834 – 3839 (2013).
  70. Deng-Ke Yang, Yue Cui, Hossein Nemati, Xiaochen Zhou, and Alireza Moheghi, “Modeling aligning effect of polymer network in polymer stabilized nematic liquid crystals,” J of Appl. Phys. 114, 243515 (2013).
  71. R. F. de Souza, D.-K Yang, E. K. Lenzi, L.R. Evangelista, R.S. Zola, “Effect of surface viscosity, anchoring energy, and cell gap on the response time of nematic liquid crystals,” Annals of Physics, 346, 14–21 (2014).
  72. Vincent P. Tondiglia, Lalgudi V. Natarajan, Christopher A. Bailey, Michael E. McConney, Kyung Min Lee, Timothy J. Bunning, Rafael Zola, Hossein Nemati, Deng-Ke Yang, and Timothy J. White, “Bandwidth broadening induced by ionic interactions in polymer stabilized cholesteric liquid crystals,” Optical Materials Express, 4, 1465 (2014).
  73. Jing Fan, Yannian Li, Hari Krishna Bisoyi, Rafael S. Zola, Deng-ke Yang, Timothy J. Bunning, David A. Weitz, and Quan Li, “Light-Directing Omnidirectional Circularly Polarized Reflection from Liquid-Crystal Droplets,” Angewandte Chemie, 53, 2160-2164 (2015).
  74. Hossein Nemati, Shiyi Liu, Rafael S. Zola, Vincent P. Tondiglia, Kyung Min Lee, Timothy White, Timothy Bunning and Deng-Ke Yang* “Mechanism of electrically induced photonic bandgap broadening in polymer stabilized cholesteric liquid crystals with negative dielectric anisotropies,” Soft Matter, 11, 1208 (2015).
  75. Alireza Moheghi, Hossein Nemati, and Deng-Ke Yang*, “Polarizing light waveguide plate from polymer stabilized liquid crystals,” Opt. Mater. Express, 5 (5), 1217-1223 (2015).
  76. Xiaochen Zhou, Guangkui Qin, Youmei Dong, Deng-Ke Yang*, “Fast switching and high-contrast polymer-stabilized IPS liquid crystal display,” Journal of Society for Information Display, 25, 333-338 (2015).
  77. Yue Cui, Young-Cheol Yang, and Deng-Ke Yang, “Anchoring strength of dual rubbed alignment layers in liquid crystal cells,” Japanese Journal of Applied Physics 54, 061701 (2015).
  78. Chenming Xue, Jie Xiang, Hossein Nemati, Hari Krishna Bisoyi, Karla Gutierrez-Cuevas, Ling Wang, Min Gao, Shuang Zhou, Deng-ke Yang, Oleg D. Lavrentovich, Augustine Urbas, and Quan Li*, “Light-Driven Reversible Alignment Switching of Liquid Crystals Enabled by Azo Thiol Grafted Gold Nanoparticles, ChemPhysChem Communication, 16, 1852–1856 (2015).
  79. Wenhuan Yao, Yanzi Gao, Xiao Yuan, Baofeng He, Haifeng Yu, Lanying Zhang,Zhihao Shen, Wanli He, Zhou Yang, Huai Yang and Dengke Yang, “Synthesis and self-assembly behaviours of side-chain smectic thiol–ene polymers based on the polysiloxane backbone,” Journal of Materials Chemistry C, (2016)
  80. Alireza Moheghi, Guangkui Qin, and Deng-Ke Yang*, “Stable polarizing light waveguide plate for edgelit liquid crystal displays,” Opt. Mater. Express, 6 (2), 429-435 (2016).
  81. Xiaochen Zhou Guangkui Qin and Deng-Ke Yang*, “Single-cell gap polymer-stabilized fringe-field switching transflective liquid crystal display,” Optical Letter, 41 (2), 257-260 (2016).
  82. Alireza Moheghi, Hossein Nemati, Yannian Li, Quan Li, Deng-Ke Yang, “Bistable salt doped cholesteric liquid crystals light shutter,” Optical Materials, 52, 219–223 (2016).
  83. Wan-Li He, Zhou Yang, Hui Cao, Dong Wang, Deng-Ke Yang, and Huai Yang, “Chiral hydrogen-bonded complex with different mesogens length and its effect on the performances of blue phase,” Opt. Mater. Express, 6 (3), 868-875 (2016).
  84. Meina Yu, Xiaochen Zhou, Jinghua Jiang, Huai Yang and Deng-Ke Yang, “Matched elastic constants for a perfect helical planar state and a fast switching time in chiral nematic liquid crystals,” Soft Matter, 12, 4483 (2016).
  85. Min Su Kim, Philip J. Bos, Dong-Woo Kim, Deng-Ke Yang, Joong Hee Lee and Seung Hee Lee, “Flexoelectric effect in an in-plane switching (IPS) liquid crystal cell for low-power consumption display devices,” Scientific Reports, 6, 35254 (2016).
  86. Seung Hee Lee, “Field-symmetrization to solve luminance deviation between frames in a low-frequency-driven fringe-field switching liquid crystal cell,” Optics Express, 24, 29568 (2016).
  87. Jinghua Jiang and Deng-Ke Yang*, “Chirality differentiation by diffusion in chira nematic liquid crystals,” Physical Review Applied, 7, 014014 (2017). Highlighted by editor.
  88. Meina Yu, Ling Wang, Hossein Nemati, Huai Yang, Timothy Bunning  and Deng-Ke Yang*, “Effects of Polymer Network on Electrically Induced Reflection Band Broadening of Cholesteric Liquid Crystals,” Journal of Polymer Science, 55, 835-846 (2017), selected for journal cover.
  89. Jinghua Jiang, Greg McGraw, Ruiqing Ma,  Julie Brown, and Deng-Ke Yang*, “Selective scattering polymer dispersed liquid crystal film for light enhancement of organic light emitting diode,” Optics Express, 27, 3327 (2017).
  90. Jinghua Jiang and Deng-Ke Yang*, “Bipolar to Toroidal Configuration Transition in Liquid Crystal Droplets,” Liquid Crystal, 45, 102–111 (2018)
  91. Minsu Kim, Hyeong G. Ham, Han-sol Choi, Philip J. Bos ,Deng-Ke Yang, Joong Hee Lee and SeungHee Lee, “Flexoelectric in-plane switching (IPS) mode with ultra-high-transmittance, low-voltage, low-frequency, and a flicker-free image,” Optical Express, 5, 5962 (2017).
  92. X. Zhou, G. Qin, L. Wang, Z. Chen, X. Xu, D. You, A. Moheghi, and D.-K. Yang*, “Full color waveguide liquid crystal display,” Optics Letters, 42, 3706 (2017).
  93. Xiaochen Zhou, Yingfei Jiang, Guangkui Qin, Xiaoguang Xu, and Deng-Ke Yang, “Static and Dynamic Properties of Hybridly Aligned Flexoelectric In-Plane-Switching Liquid-Crystal Display,” Physical Review Applied, 8, 054033 (2017).
  94. Meina Yu, Huai Yang and Deng-Ke Yang*, “Stabilized electrically induced Helfrich deformation and enhanced color tuning in cholesteric liquid crystals,” Soft Matter, 13, 8728 (2017).
  95. Hossein Nemati, Shiyi Liu, Alireza Moheghi, Vincent P. Tondiglia, Kyung Min Lee, Timothy J. Bunning and Deng-Ke Yang*, “Enhanced Reflection Band Broadening in Polymer Stabilized Cholesteric Liquid Crystals with Negative Dielectric Anisotropy,” Journal of Molecular Liquids,  267, 120-126 (2018).
  96. MinSu Kim, Heui Seok Jin, Seung Jae Lee, Yun-Ho Shin, Hyeong Gyun Ham, Francesca Serra, Deng-Ke Yang, Philip J. Bos, Joong Hee Lee, and Seung Hee Lee, “Liquid crystals for superior electro-optic performance display device with power-saving mode,” Advanced Optical Materials, 6, 1800022 (2018).
  97. Meina Yu, Yingfei Jiang, Yonho Shin, Jinghua Jiang, Huai Yang, Hongwei Zhang, Jiuzhi Xue, Quan Li and Deng-Ke Yang, “Effect of biaxiality on chirality in chiral nematic liquid crystals, Soft Matter, 14, 6530 – 6536 (2018).
  98. Yingfei Jiang, GuangKui Qi, Xiaoguang Xu, Li Zhou, Seung Hee Lee, and Deng-Ke Yang*, “Image flickering-free polymer stabilized fringe field switching liquid crystal display,” Optics Express, 26, 32641 (2018).
  99. Jinghua Jiang and Deng-Ke Yang, “Self-Assembly of Liquid-Crystal Droplets in Cells With Patterned Indium Tin Oxide,” Physical Review Applied, 11, 044075 (2019).
  100. Yingfei Jiang, Xiaochen Zhou, Yunho Shin, Guangkui Qin, Xiaoguang Xu, Li Zhou, SeungHee Lee and Deng‐Ke Yang, “Image flickering reduction by dimer and polymer stabilization in FFS liquid crystal display,” Journal of Society for Information Display, (2019).
  101. Yingfei Jiang, Yunho Shin, and Deng-Ke Yang, Dual-Mode Switchable Liquid-Crystal Window, Physical Review Applied, 12, 054037 (2019).
  102. Qian Wang, Li Yu, Jian Sun, Yu Guan, Ziyuan Zhou, Yunho Shin, Huai Yang, John West, Deng‐Ke Yang, Sunlight‐Driven Self‐Organized Helical Superstructure Chromotropic Device, Advanced Optical Materials, 8 (24), 2001207 (2020).
  103. Yunho Shin, Jinghua Jiang, Guangkui Qin, Qian Wang, Ziyuan Zhou, Deng-Ke Yang, Patterned waveguide liquid crystal displays, RSC Advances, 10 (68), 41693-41702 (2020).
  104. Yunho Shin, Qian Wang, Deng-Ke Yang, Chiral differentiation of limonene in chiral nematic liquid crystals, Soft Matter, 16 (15), 3669-3677 (2020).
  105. Ruochen Lan, Jian Sun, Chen Shen, Rui Huang, Zhongping Zhang, Cong Ma, Jinying Bao, Lanying Zhang, Ling Wang, Dengke Yang, and Huai Yang , Light-Driven Liquid Crystalline Networks and Soft Actuators with Degree-of-Freedom-Controlled Molecular Motors, Advanced Functional Materials, 30, 2000252 (2020).
  106. Yingfei Jiang, Yaqing Zhou, Meng Wang and Deng-Ke Yang, Smart Thermally Switchable Liquid Crystal Window, Advanced photonics Research, 2000156 (2021).
  107. Yunho Shin, Yingfei Jiang, Qian Wang, Ziyuan Zhou, Guangkui Qin, and Deng-Ke Yang, “Flexoelectric Effect based on Light Waveguide Liquid Crystal Display for Transparent Display”, Photonics Research, (2021).

 

 

 

 

Papers published in refereed proceedings,

 

  1. D.K. Yang and P.P. Crooker, "Textures of polymer-dispersed chiral liquid crystal microdroplets," Proceedings of SPIE, 1257, 60-67 (1990).
  2. J.W. Doane, D.K. Yang and L.C. Chien, "Current trends in polymer dispersed liquid crystal," Proc. Intnl. Display Res. Conf., 175-178 (October, 1991).
  3. D.K. Yang, L.C. Chien and J.W. Doane, "Cholesteric liquid crystal/polymer gel dispersion bistable at zero field," Proc. Intnl. Display Res. Conf., 49-52 (October, 1991).
  4. Y. Fung, D.K. Yang and J.W. Doane, "Cholesteric liquid crystal/polymer gel dispersion for flat panel displays,"   Proc. SPIE, (1992).
  5. D.-K. Yang and J.W. Doane, "Cholesteric liquid crystal/polymer gel dispersions: reflective displays," Proc. SID Intnl. Symp., 759-761 (May, 1992).
  6. J.W. Doane, D.K. Yang and Z. Yaniv, "Front-lit flat panel display from polymer stabilized cholesteric textures," Proc. Japan Display' 92, 73-76 (1992).
  7. Y. Fung, D.K. Yang and J.W. Doane, "Projection display from polymer stabilized cholesteric textures,"   Proc. Eurodisplay ' 93, 157-160 (1993).
  8. M. Pfeiffer, Y. Sun, D.-K. Yang, J.W. Doane, W. Sautter, E. Lueder and Z. Yaniv, "Design of PSCT materials for MIM addressing," Proc. SID Intnl Symp., 837-840 (1994).
  9. W.J. Fritz, W.D. St. John, D.-K. Yang and J.W. Doane, "Reflective color of PSCT displays," Proc. SID Intnl Symp., 841-844 (1994).
  10. J.W. Doane, W. D. St. John, Z. J. Lu and D.-K. Yang, "Stabilized and modified cholesteric liquid crystals for reflective displays," Proc. Intnl. Display Res. Conf., 65-68 (Oct. 1994).
  11. D.-K. Yang and Z.-J. Lu, "Switching mechanism of bistable cholesteric reflective displays," Proc. SID Intnl Symp., 351-354 (1995).
  12. X.-Y. Huang, D.-K. Yang, P. Bos and J. W. Doane, "Dynamic drive for bistable reflective cholesteric displays: a rapid addressing scheme," Proc. SID Intnl Symp., 347-350 (1996).
  13. Z.-J. Lu, W.D. St. John, X.-Y. Huang, D.-K. Yang and J.W. Doane, "Surface Modified reflective cholesteric displays," Proc. SID Intnl Symp., 172-175 (1995).
  14. 30. M. Pfeiffer, D.-K Yang, J.W. Doane, R. Bunz and E. Luder,  "A high information content reflective cholesteric display,"  Proc. SID Intnl Symp., 706-709 (1995).
  15. Z. Yaniv, C. Catchpole, M. H. Lu, R. Bunz, E. Lueder, M. Pfeiffer, D.-K. Yang and J. W. Doane, "Electronic newspaper display," Proc. Asia Display' 95, 113-116(1995).
  16. J.W. Doane, D.-K. Yang and M. Pfeiffer, "Polymer modified and stabilized cholesteric liquid crystal materials for flat panel application," Proc. Macromol. Symp., 96, 51 (1995).
  17. D.-K. Yang, Y.-M. Zhu and C. Boulic, "Effect of dichroic dye on polymer stabilized cholesteric texture light shutter," Proc. Asia Display' 95, 51-54 (1995).
  18. X.-Y. Huang, D.-K. Yang, M. Stefanov and J.W. Doane, "High-performance dynamic drive scheme for bistable reflective cholesteric displays," Proc. SID Intnl Symp., 359-362 (1996).
  19. W. Sautter, R. Bunz, R. Harjung, E. Lueder, D.-K. Yang and J.W. Doane, "A reflective MIM-addressed PSCT display suited for video application," Proc. Eurodisplay '96, 523-526 (1996).
  20. R.Q. Ma and D.-K. Yang, "Polymer stabilized bistable black-white cholesteric reflective display," Proc. SID' 97, 101-104 (1997).
  21. Y.-M. Zhu and D.-K. Yang, "High speed dynamic drive scheme for bistable reflective cholesteric displays," Proc. SID' 97, 97-100 (1997).
  22. B. Taheri, J. L. West and D. K. Yang, "Recent development in bistable cholesteric displays," Proc. of SPIE, 3297, 115-121 (1998).
  23. J. Gandhi, D.-K. Yang, "Temperature compensation of the dynamic drive scheme for bistable cholesteric displays," SID Digest, XXIX, 794-797 (1998).
  24. Y.-M. Zhu and D.-K. Yang, "Cumulative drive scheme for bistable reflective cholesteric LCDs," SID Digest, XXIX, 798-801 (1998).
  25. X.-Y. Huang, N. Miller, A. Khan, D. Davis, J. W. Doane and D.-K. Yang, "Gray scale of bistable reflective cholesteric displays," SID Digest, XXIX, 810-813 (1998).
  26. X.-D. Mi and D.-K. Yang, "Cell designs for fast reflective cholesteric LCDs," SID Digest, XXIX, 909-912 (1998).
  27. M. Xu, D.-K. Yang, J. Bos, X. Jin, F. W. Harris and S. Z. D. Cheng, "Very high pretilt alignment and its application in Pi-cell LCDs," SID Digest, XXIX, 139-141 (1998).
  28. J. Gandhi, D.-K. Yang, X.-Y. Huang and N. Miller, "Gray scale drive schemes for bistable cholesteric reflective displays," Proc. Asia Display' 98, 127-130 (1998).
  29. M. Xu and D.-K. Yang, "Dual frequency cholesteric liquid crystal reflective display," Proceedings of SPIE, 3635, 80-85 (1999).
  30. X.-D. Mi, M. Xu, D.-K. Yang and P.J. Bos, "Effects of pretilt angle on electro-optical properties of Pi-cell LCDs," SID Intl Symp Digest Tech. Papers, XXX, 24-27 (1999).
  31. R. Sun, W. Jang and D.-K. Yang, "Optimization of polymer stabilized cholesteric texture materials for high-brightness projection displays," SID Intl Symp Digest Tech. Papers, XXX, 652-655 (1999).
  32. M. Xu and D.-K. Yang, "Optical properties of the gray-scale states of cholesteric reflective displays," SID Intl Symp Digest Tech. Papers, XXX, 950-953 (1999).
  33. X.-D. Mi and D.-K. Yang, “Ionic effects in bistable reflective cholesteric liquid crystals,” SID Intl Symp Digest Tech. Papers, XXXI, 823-825 (2000).
  34. R.-P. Sun and D.-K. Yang, “Fast drive scheme for polymer stabilized cholesteric texture display,” Conf. Rec. 20th Intl. Display Research Conference, 34-37 (2000).
  35. W. G. Jang and D.-K. Yang, “Optimization of dichroic dye-doped bistable polymer-stabilized cholesteric-texture light valve,” Proc. 1st International. Meeting on Information Display, 20 (2001).
  36. H. Kubota, D.-K. Yang, T. Uemura, Y. Takuba and J. R. Kelly, “Simulation study of light emission of a backlight system with a broad band cholesteric liquid crystal polarizer,” SID Intl Symp Digest Tech. Papers, XXXIII, 333-335 (2002).
  37. F. Zhang and D.-K. Yang, “Polymer stabilized cholesteric dichroic dye displays,” SID Intl Symp. Digest Tech. Papers, XXXIII, 469-471 (2002).
  38. D.-K. Yang, “Optical properties and drive schemes of bistable reflective cholesteric displays,” Proc. Of China Flat Panel displays’2002, 20-23 (2002).
  39. A. Khan, N. Miller, F. Nicholson, R. Armbruster, J. W. Doane, D. Wang and D.-K. Yang, “Dynamically driven polymer stabilized black and white cholesteric liquid crystal display,” Proc. Intl. Display Workshop, 1348-1352 (2002).
  40. F. Zhou and D.-K. Yang, “Wavelength divided trans-reflective liquid crystal display,” SID Intl Symp. Digest Tech. Papers, XXXIV, 82-85 (2003).
  41. D.-K. Yang, Z.J. Lu, L.C. Chien and J. W. Doane, “Bistable polymer dispersed cholesteric reflective display,” SID Intl Symp. Digest Tech. Papers, XXXIV, 959-961 (2003).
  42. F. Zhou and D.-K. Yang, “Polymer stabilized electrically controlled birefringence transreflective liquid crystal display,” SID Intl Symp. Digest Tech. Papers, XXXV, 38-41 (2004).
  43. D.-K. Yang, “Effects of cell structure on a liquid crystal optical switch based on internal reflection,” Proc. SPIE, 5289, 161-169 (2004).
  44. F. Zhou and D.-K. Yang, “Optimization of film compensated reflective bistable TN displays,” SID Intl Symp. Digest Tech. Papers, XXXVI, 714-717 (2005).
  45. F. Zhou and D.-K. Yang, “Design of transflective bistable twisted nematic LCD,” SID Intl Symp. Digest Tech. Papers, XXXVII, 825-828 (2006).
  46. D.-K. Yang, F. Zhou, S. Hurley and L. Shi, “An analytical approach in designing film STN LCDs,” Conf. Rec. 26th Intl. Display Research Conference, 235-238 (2006).
  47. D.-K. Yang, F. Zhou, S. Hurley and L. Shi, “An analytic approach in designing film STN LCDs,” Conference Record of International Display Research Conference, 235-238 (2006).
  48. S. Hurley and D.-K. Yang, Jianru Shi and Chris Mullin, “A Systematic Optimization of Normal-White STN-LCDs,” SID Intl Symp. Digest Tech. Papers, XXXVIII, 475-478 (2007).
  49. Y.-C. Yang and D.-K. Yang, “Achromatic reduction of off axis light leakage in LCDs by self-compensated phase retardation (SPR) film,” SID Intl Symp. Digest Tech. Papers, XXXIX, 1955-1958 (2008).
  50. S. Hicks, Y.-C. Yang and D.-K. Yang, “Stability and performance of OCB in transflective display,” Conference Record of International Display Research Conference, 7-10 (2008).
  51. S. Hurley, Y-C. Yang and D.-K. Yang, J. Shi and C. Mullin, “Driving dynamics of VA-LCDS with small pretilt angles,” Conference Record of International Display Research Conference, 164-167 (2008).
  52. Y.-C. Yang and D.-K. Yang, “Simulation study and design of biaxial nematic liquid crystal displays,” Conference Record of International Display Research Conference, 179-182 (2008).
  53. Y.-C. Yang and D.-K. Yang, “Achromatic reduction of light leakage in reflective LCDs by self-compensated phase retardation (SPR) film,” Conference Record of International Display Research Conference, 249-252 (2008).
  54. Young-Cheol Yang, Rui Bao, Kexuan Li and Deng-Ke Yang, “Sub-Millisecond Liquid Crystal Mode Utilizing Electro-Optic Kerr Effect Comprising Polymer-Stabilized Isotropic Liquid Crystals,” SID Intl Symp. Digest Tech. Papers, XXXX, 586-589 (2009).
  55. Shawn Hurley, Ji Ma and Deng-Ke Yang, A Flexible Display Using Dye-Doped PSCT,” SID Intl Symp. Digest Tech. Papers, XXXX, 1520-1523 (2009).
  56. Ji Ma, Sarah Hicks, Shawn Hurley and Deng-Ke Yang, “Effect of Pressure on Polymer Stabilized Cholesteric,” SID Intl Symp. Digest Tech. Papers, XXXX, 1532-1535 (2009).
  57. Young-Cheol Yang and Deng-Ke Yang, “Wider Viewing Angle in In-Plane Switching Mode Liquid Crystal Displays by Self-Compensated Phase Retardation Films,” SID Intl Symp. Digest Tech. Papers, XXXX, 1563-1566 (2009).
  58. Young-Cheol Yang and Deng-Ke Yang, “Optical Compensation Schemes of Biaxial Nematic Liquid Crystal Displays for Wide Viewing Angle Performance,” SID Intl Symp. Digest Tech. Papers, XXXIX, 1567-1570 (2009).
  59. Young-Cheol Yang and Deng-Ke Yang, “Drawing-Induced Biaxiality Change from a Positive C to a Negative A Plate and Its Application in Wide Viewing Angle IPS LCDs,” SID Intl Symp. Digest Tech. Papers, XXXXI, 495-498 (2010)
  60. Shaw Hurley, Deng-Ke Yang and Chris Mullin, “The Scattering Profile of Polymer Stabilized Cholesteric Texture Displays,” SID Intl Symp. Digest Tech. Papers, XXXXI, 293-296 (2010)
  61. Rafael Zola, Shaw Hurley and Deng-Ke Yang and Chris Mullin, “Liquid Crystal Display Response Time Improvement by Using the Natural Chiral Molecule D-Limonene,” SID Intl Symp. Digest Tech. Papers, XXXXI, 1762-1765 (2010).
  62. Young-Cheol Yang, Rafael S. Zola, Yue Cui, and Deng-Ke Yang, Heng-Yin Chen, Chien-Chih Hsu, Chih-Jen Chen, and Chao-Chiun Liang, “Master Parameter Governing the Response Time of Reflective Cholesteric Liquid Crystal Displays,” SID Intl Symp. Digest Tech. Papers, XXXXII, 1762-1765 (2011). 400-403 (2011).
  63. Rafael S. Zola, Young-Cheol Yang and Deng-Ke Yang, Heng-Yin Chen, Chien-Chih Hsu, Chih-Jen Chen Chao-Chiun Liang and Kung-Lung Cheng, “A New Drive Scheme for Cholesteric Reflective Displays Under Active Matrix Addressing,” SID Intl Symp. Digest Tech. Papers, XXXXII, 1762-1765 (2011). 392-395 (2011).
  64. Rafael S. Zola, Young-Cheol Yang and Deng-Ke Yang, Heng-Yin Chen, Chien-Chih Hsu, Chih-Jen Chen, Chao-Chiun Liang and Kung-Lung Cheng, “Natural Chiral Dopant D-Limonene for Active Matrix Bistable Cholesteric Displays,” SID Intl Symp. Digest Tech. Papers, XXXXII, 1762-1765 (2011). 1684-1687 (2011).
  65. Yue Cui, Rafael S. Zola, Young-Cheol Yang, Deng-Ke Yang, “Improvement of PDLC Performance by Changing Surface Anchoring Strength,” SID Intl Symp. Digest Tech. Papers, XXXXII, 1762-1765 (2011). 1641-1644 (2011).
  66. Rafael S. Zola, Hossein Nemati, Young-Cheol Yang, Deng-Ke Yang, Kung-Lung Cheng, Chao-Chiun Liang, Frank Shiu, Chen-Chu Tsai, “Dual Mode Reflective Cholesteric Display,” SID Intl Symp. Digest Tech. Papers, XXXXIII, 551-554 (2012).
  67. Yue Cui and Deng-Ke Yang, “Encapsulated Polymer Stabilized Cholesteric Texture Light Shutter,” SID Intl Symp. Digest Tech. Papers, XXXXIII, 1466-1469 (2012).
  68. Yue Cui, Deng-Ke Yang, Ruiqing Ma, Julie J. Brown, “Characterization and Modeling of Light Diffusing Sheet,” SID Intl Symp. Digest Tech. Papers, XXXXIV, 291-294 (2013).
  69. Hossein Nemati, Rafael S. Zola, and Deng-Ke Yang, “Electrical Color and Intensity Tuning in Cholesteric Reflective Display,” SID Intl Symp. Digest Tech. Papers, XXXXV, 1500-1503 (2014).
  70. Alireza Moheghi, Miki Kashima, Quangkui Qin, Youmei Dong and Deng-Ke Yang, “PSCT for switchable transparent liquid crystal displays,” SID Intl Symp. Digest Tech. Papers, XXXXVI, 817-820 (2015).
  71. Alireza Moheghi, Guangki Qin, and Deng-Ke Yang; “Polarizing Light Waveguide Plate,” SID Intl Symp. Digest Tech. Papers, XXXXVII, 1639-1641 (2016).
  72. Jinghua Jiang, Greg McGraw, Ruiqing Ma, Julie Brown and Deng-Ke Yang, “Selective Scattering of PDLC film and Its Application in OLED,” SID Intl Symp. Digest Tech. Papers, XXXXVIII, 727-730 (2017).
  73. Xiaochen Zhou, Guangkui Qin, Xiaoguang Xu, Deng-Ke Yang, “Reverse OCB Liquid Crystal Display,” SID Intl Symp. Digest Tech. Papers, XXXXVIII, 1888-1891 (2017).
  74. Chang Suk Lee, Han Sol Choi, Hyeong Gyun Ham, Hye Sun Yoo, MinSu Kim, Young Jin Lim, Tae Hyeong Kim, Philip J. Bos, Deng-Ke Yang, and Seung Hee Lee, “Maximization of Transmittance and Minimization of Image-Flickering due to Flexoelectric Effect in Low-Frequency Driving Fringe-Field Switching (FFS) Mode Using LCs with Negative Dielectric Anisotropy,” SID Intl Symp. Digest Tech. Papers, 48, 1841-1844 (2017).
  75. Kyeong Jun Cho, Hyeong Gyun Ham, Seung Jae Lee, MinSu Kim, Yeong Su Kim, Deng- Ke Yang, Hyun-Su Park, Gi-Dong Lee, and Seung Hee Lee, “Flexoelectric Effect in Fine-patterned In-plane Switching (IPS) Mode,” SID Intl Symp. Digest Tech. Papers, 48, 1845-1848 (2017).
  76. Yingfei Jiang1, Xiaochen Zhou, Guangkui Qin, Xiaoguang Xu, SeungHee Lee, Deng-Ke Yang, “Effects of Flexoelectricity and Ion on the Flicker of Fringe Field Switching Liquid Crystal Display,” SID Intl Symp. Digest Tech. Papers, 49, 1095-1098 (2018).
  77. Yingfei Jiang, Xiaochen Zhou, Guangkui Qin, Xiaoguang Xu, SeungHee Lee, Deng-Ke Yang, “Image Flickering Reduction by Dimer and Polymer Stabilization in ADS Liquid Crystal Display,” SID Intl Symp. Digest Tech. Papers, 50, 1821-1824 (2019).
  78. Long Wang, Nanfang Jia, Liye Duan, Tuo Sun, Zongmin Liu, Jia Fang, Mengjun Hou, Xiaotong Liu, Yongming Shi, Yanzhao Li, Xiaochen Zhou, Yunho Shin, Guangkui Qin, Seoyoon KIM, Xinguo Li, Yidan Peng, Shuo Zhang, Fan Yang, Junmin Sun, Qing Liu, Boris Kristal, Dengke Yang, “Development of Waveguide Liquid Crystal Display for Transparent Display Applications,” SID Intl Symp. Digest Tech. Papers, 50, 1573-1575 (2019).

 

 

 

Papers published in un-refereed proceedings

  1. D.K. Yang, L.C. Chien and J.W. Doane, "Cholesteric liquid crystal/polymer gel dispersion bistable at zero field," ALCOM Tech. Jrnl. I, 1991.
  2. D.K. Yang, J.W. Doane and L.C. Chien, "Cholesteric liquid crystal/polymer gel dispersion normal- and reverse-mode haze free light shutters," ALCOM Tech. Jrnl. I, 1991.
  3. Y.K. Fung, D.-K. Yang and J.W. Doane, "Thermoplastic dispersions," ALCOM Tech. Jrnl. I, 1991.
  4. W.D. St. John, W.J. Fritz, Z.-J. Lu and D.-K. Yang, "Optical properties of bistable cholesteric reflective displays," ALCOM Tech. Jrnl. V, 124-135 (1994).
  5. M. Pfeiffer, D.-K. Yang, J.W. Doane, R. Bunz, E. Lueder, C. Catchpole and Z. Yaniv, "A 14-inch truly reflective PSCT display: the viewer," ALCOM Tech. Jrnl. V, 120-123 (1994).
  6. M. Pfeiffer, Y. Sun, D.-K. Yang, J.W. Doane, W. Sautter, V. Hochholzer, E. Ginter  and E. Lueder, "PSCT-AM-MIM display prototypes," ALCOM Tech. Jrnl. V, 115-119 (1994).
  7. Z.Z. Zhong, D.E. Schuele and D.-K. Yang, "Polymer stabilized cholesteric texture: an electrical aspect," ALCOM Tech. Jrnl. V, 89-91 (1994).
  8. X-Y. Huang and D.-K. Yang, "Dynamic dielectric study of transitions from homeotropic state of cholesteric liquid crystals," ALCOM Tech. Jrnl. VI, 122-129 (1994).
  9.  Z.Z. Zhong, D.E. Schuele and D.-K. Yang, "Polymer stabilized cholesteric texture: a dynamic aspect," ALCOM Tech. Jrnl. VI, 68-74 (1994).
  10. Y.K. Fung, Y. Sun, M. T. Pfeiffer, D.-K. Yang and J.W. Doane, "Polymer stabilized cholesteric texture light valves," ALCOM Tech. Jrnl. VI, 52-56 (1994).
  11. D.E. Schuele, Z.Z. Zhong and D.-K. Yang, "Electric behavior of a PSCT system during photo-polymerization," ALCOM Tech. Jrnl. VI, 33-42 (1994).
  12.  Z.-J. Lu, D.-K. Yang and J.W. Doane, "Surface modified bistable cholesteric liquid crystal reflective display," ALCOM Tech. Jrnl. VI, 115-121 (1994).
  13. Y.K. Fung, D.-K. Yang, Y. Sun, L.C. Chien, S. Zumer and J.W. Doane, "Polymer networks formed in liquid crystals," ALCOM Tech. Jrnl. VI, 11-18 (1994).
  14. Y.M. Zhu and D.-K. Yang, "Pattern formation in homeotropic-focal conic transition of cholesteric liquid crystal with dispersed polymer network," ALCOM Tech. Jrnl. VII, 128-135 (1995).
  15. D.-K. Yang, Z.J. Lu and P. Palffy-Muhoray, "Dynamics of relaxation from field-induced homeotropic state in cholesteric liquid crystals," ALCOM Tech. Jrnl. VII, 13-29 (1995).
  16. R.M. Ho, Y. Yoon, F. Li, F.W. Harris, S.Z.D. Cheng, D.-K. Yang, V. Percec, P. Chu, "Surface induced orientation and order in a series of main-chain liquid crystalline polyethers," ALCOM Technical Jrnl VIII, 75-82 (1996).
  17. O.D. Lavrentovich and D.-K. Yang, "Oily streaks in Cholesteric planar-focal conic transition," ALCOM Technical Jrnl IX, 11-22 (1997).
  18. X.-D. Mi, J. V. Gandhi and D.-K. Yang, "Effects of surface anchoring on the homeotropic-planar transition in cholesteric liquid crystals," ALCOM Technical Jrnl IX, 23-32 (1997).
  19. R.-Q. Ma and D.-K. Yang, "Fast polymer stabilized cholesteric texture normal-mode light shutter," ALCOM Technical Jrnl IX, 51-60 (1997).
  20. M. Xu and D.-K. Yang, "Fast switching method for cholesteric liquid crystal light shutters," ALCOM Technical Jrnl IX, 61-68 (1997).
  21. R. E. Kraig, P. L. Taylor, R.-Q. Ma and D.-K. Yang, "Nematic order in polymer stabilized liquid crystals," ALCOM Technical Jrnl IX, 73-78 (1997).
  22. R. Sun and D.-K. Yang, “Polymer stabilized cholesteric texture materials for projection display,” ALCOM Technical Jrnl, X, 19-26 (1999).
  23. R.-Q. Ma and D.-K. Yang, “SEM study of the polymer network formed in liquid crystals,” ALCOM Technical Jrnl, X, 73-78 (1999).
  24. S. Gu, R. J. Twieg, R. Ma and D.-K. Yang, “Phenylglyoxylate liquid crystal: synthesis, mesogenic properties and application as free-radical photoinitiator,” ALCOM Technical Jrnl, X, 157-162 (1999).
  25. "A novel drive scheme for polymer stabilized cholesteric texture display," R.Sun and D.-K. Yang, ALCOM Tech Report XI, 7113-117 (2000).
  26. "Polymer stabilized cholesteric dichroic dye displays," F. Zhang, J. Kim, M. Neubert and D.-K. Yang, ALCOM Tech Report XI, 119-126 (2000).
  27. "Electro-optical properties of polymer stabilized cholesteric texture normal-mode light shutter from flexible monomers," R. Chen and D.-K. Yang, ALCOM Tech Report XI, 223-229 (2000).
  28. “Wavelength divided trans-reflective liquid crystal displays,” D.-K. Yang and F. Zhou, Proceeding of International Meeting on Information Display, 309-310 (2003)
  29. “Cholesteric liquid crystals for reflective displays,” D.-K. Yang, A. Khan and J. W. Doane, Proceedings of International. Mini-Conference on Information Electronics System, 161-163 (2003).
  30. “Non-symmetric broadening of the reflection notch in polymer stabilized cholesteric liquid crystals,” Lalgudi V. Natarajan, Jimmy R. Voss, Vincent P. Tondiglia, Deng-Ke Yang, Timothy J. White, and Timothy J. Bunning, Proc. SPIE,  7775, 77750Z (2010)
    Patent
  1. "Color liquid crystal display consisting of polymer dispersed chiral liquid crystal having negative dielectric anisotropy," P.P. Crooker and Dengke Yang, US. Patent 5,200,845, April 6, 1993.
  2. "Method and Apparatus for Electronic Switching of a Reflective Color Display," D.K. Yang and J.W. Doane, US. Patent 5,251,048, Oct. 5, 1993.
  3. "Grey Scale Liquid Crystal Materials," D.K. Yang and J.W. Doane, US. Patent 5,384,067, June 24, 1995.
  4. "Liquid Crystal Light Modulating Device and Material," D.K. Yang, J.W. Doane, and L.C. Chien, US. Patent 5,437,811, Aug. 1, 1995
  5. "Multistable Cholesteric Liquid Crystal Shutter," J.L. West and D.K. Yang, US Patent 5,453,863, Sept. 26, 1995.
  6. "Liquid Crystal Light Modulating Device and Material," D.K. Yang, J.W. Doane, and L.C. Chien, US. Patent 5,695,682, December 12, 1997.
  7. "Dynamic drive method and apparatus for bistable liquid crystal display," X.Y. Huang, D.-K. Yang and P. Bos., U.S. Patent 5,748,277, May 5, 1998.
  8. "Polymer stabilized bistable black-white cholesteric reflective display," R.Q. Ma and D.-K. Yang. US. Patent 5,847,798, December 8, 1998.
  9. "Bistable polymer dispersed cholesteric liquid crystal displays," D.-K. Yang, Z.-J. Lu and J.W. Doane, US. Patent 6,061,107, May 9, 2000
  10. "Dual frequency switchable cholesteric polarizer and the drive waveform," D.-K. Yang and M. Xu, US. Patent 5,877,826, March 2, 1999.
  11. "Drive schemes for gray scale bistable cholesteric reflective displays," Deng-Ke Yang, Xiao-Yang Huang and Nick M. Miller, US Patent 6,268,839, B1, Jul. 31, 2001.
  12. "Cumulative two phase drive scheme," D.-K. Yang and Y.M. Zhu, US Patent 6,204,835 B1, March 20, 2001.
  13. "Dynamic drive methods and apparatus for bistable cholesteric display," D.-K. Yang, Y.-M. Zhu and X.-Y. Huang, U. S. Patent 6,154,190, Nov. 28, 2000.
  14. "Dual frequency cholesteric display and drive scheme," Ming Xu and Deng-Ke Yang, US. Patent 6,320,563 B1, November 20, 2001.
  15. “Pressure sensitive liquid crystalline light modulating device and material,” J. W. Doane, D.-K. Yang and L.-C. Chien, US. Patent 6,104,448, August 15, 2000.
  16. “Polymer stabilized black-white cholesteric reflective display,” D.-K. Yang and R. Q. Ma, U.S. Patent 5,874,798, May 6, 1997.
  17. “Single layer multi-state ultra-fast cholesteric liquid crystal device and the fabrication methods thereof,” L. Li and D.-K. Yang, US Patent 6,674,504 B1, January 6, 2004.
  18. “Dual frequency cholesteric display and drive scheme,” D.-K. Yang and M. Xu, U.S. Patent 6,320,563,B1, January 21, 1999.
  19. “Liquid crystal composite, device and method thereof,” D.-K. Yang, Y.-C. Yang and R. Bao, U.S. patent 8,199,286 B2, June 12, 2012.
  20. “Polymer stabilized electrically controlled birefringence transflective LCD,” D.-K, Yang and F. Zhou, Patent  #8,199,286 B2, June 12, 2012.
  21. “Bistable switchable liquid crystal window,” D.-K, Yang, L. Shi and R. Bao, US Patent # 8,913,215 B3, December 16, 2014.
  22. “Method for driving bi-stable active matrix (AM) display panel, involves writing updated frame information into pixels on scan lines in determining phase,” D.-K. Yang, H. Chen, Y. Yang, R. Zola, C. Liang, C. Chen, US2012194498-A1, 2012.
  23. “Encapsulated polymer stabilized cholesteric texture light shutter,” D.-K. Yang, Y. Cui and C. Zhang, US9, 304,350 B2, April, 5, 2016.
  24. “Microlens arrays architectures for enhanced light outcoupling from OLED array,” Y. Cui, D.-K. Yang, R. Ma, G. McGraw, J. J. Brown, US20140361270 A1, Dec 11, 2014.
  25. “Combined Internal and External Extraction Layers for Enhanced Light Outcoupling for Organic Light Emitting Device,” Y. Cui, D.-K. Yang, R. Ma, G. McGraw, J. J. Brown,  US patent, 10,115,930 B2, Oct. 30, 2018.
  26. “Polarizing waveguide diffuser,” D.-K. Yang, A. Moheghi and H. Nemati, in application, 2013.

“Light enhance film for OLED,” D.-K. Yang, Y. Cui and J. Jiang, in application, 2013.

Expertise

Liquid Crystal
Liquid Crystal Polymer
Display
Chirality
Phase Transition
liquid crystal display
cholesteric liquid crystal
switchable window
polymer stabilization
reflective display
optical film

Research Institutes and Initiatives

Advanced Materials and Liquid Crystal Institute Brain Health Research Institute
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