L.-C. Chien received his Ph.D. in Polymer Chemistry from the University of Southern Mississippi and joined Liquid Crystal Institute of Kent State in 1988. His research interests include the studies of advanced functional materials, structures and surfaces as well as the innovative applications of such materials in displays electro-optical and photonic devices. He has published 150 articles, over 150 scientific proceedings and digest papers, edited 15 conference proceedings, three books and seven book chapters as well as 25 issued patents. He is a co-inventor of the bistable reflective cholesteric displays, polymer-stabilized liquid crystal display devices and technologies. Dr. Chien has been active in providing his services to professional society such as organizing and chair conferences as well as serve as an advisor or program committee on many international conferences.
His research in polymer and liquid crystal composites focuses on control of dimension, location and spatial distribution of phase separated polymers at the micro- and nano-scale on substrate surfaces or in the bulk. His research in polymer dispersed, modified and stabilized liquid crystal materials have led to the development of advanced electro-optical, photonic and display devices such as reflective bistable displays, electrically switchable color filters, electrically-switchable gratings, and blue phases based devices. The recently developed polymer dispersed and stabilized blue phases enable the fabrication of fast-switching spatial light modulators.
His research in tailoring liquid crystal materials to provide control over structure, surface, morphology, and processing have led to the development of new electro-optical devices. For examples, research in active and stimuli-responsive low- and high-molar-mass materials have led to the development of artificial muscles, light emitting devices and organic thin film transistors; Furthermore, the active materials whose functionality are used for controlled- assembly or self-assembly of dispersed nanoparticles to ordered structures to enhance desired properties of functional devices.
Past Research - Scientific American article about Cholesteric LCDs (pdf)
“Liquid Crystals and Polymers in Display Applications”, C. S. Hsu and L. C. Chien, Taylor & Francis Group, LLC Books, Boca Raton, FL, USA (2014).
“Emerging Display Technologies,” L. C. Chien, John Wiley & Sons, Hoboken, NJ, USA (2015).
J.-Y. Hwang, V. Borshch and L.-C. Chien “Fast Switching Surface-Polymer-Assisted Vertially Aligned Displays,” Chapter 14, in “Progress in Liquid Crystal (LC) Science and Technology” H.-S. Kwok, S. Nemur, and H.-L. Ong, Eds., World Scientific, Singapore, 2013.
“Spatially-ordered polymers self-assembled in ordered liquid crystal templates,” L.C. Chien, C.O. Catanescu, L. Li, in “Crosslinked Liquid Crystalline Systems: From Rigid Polymer Networks to Elastomers,” D. Broer, G.P. Crawford, and S. Zumer, Eds., Taylor and Francis. (2011).
S. Wang, K.D. Singer, R.G. Petschek, S. Huang, L.-C. Chien, “Synthesis and Characterization of Novel Chiral Chromophores for Nonlinear Optical Applications,” in ACS Symposium Series 795, “Optical Polymers: Fibers and Waveguides” J.P. Harmon, G.K. Noren, Eds., Chapter 6, 77-89 (2001).
L.-C. Chien, “Liquid Crystals and Polymers,” in Liquid Crystals Interactive CD-ROM Education Software, S. Abeygunatharaman Ed., IO Graphics: Kent, OH (1998).
C.V. Rajaram, S.D. Hudson, L.-C. Chien, “Morphology of Composites of Low-Molar-Mass Liquid Crystals and Polymer Networks,” in ACS Symposium Series 672, “Photonic and Optoelectronic Polymers” S.A. Jenekhe, K.J. Wynne Eds., Chapter 34, 507 (1997).
D.K. Yang, L.-C. Chien, "Polymer Stabilized Cholesteric Textures: Materials and Applications," in Liquid Crystals in Complex Geometries, Ed. G.P. Crawford, S. Zumer, Taylor and Francis Publisher: London, Chapter 3, (1996).
L.-C. Chien, M.N. Boyden, A.J. Walz, C.M. Citano, "Recent Advances in Materials for Polymer Stabilized Liquid Crystals," in ACS Symposium Series 632 "Recent Advances in Liquid Crystalline Polymers," A.I. Isayev, Eds. Chapter 11, p. 182, (1996).
Recent Proceedings (2009-2014)
“Advances in Display Technologies IV,” L. C. Chien, S. D. Lee and M. H. Wu, The Proceeding of International Society for Optical Engineering, Vol. 9005, 2014.
“Emerging Liquid Crystal Technologies IX,” L. C. Chien, The Proceeding of International Society for Optical Engineering IV, Vol. 9004, 2014.
“Advances in Display Technologies III,” L. C. Chien, S. D. Lee and M. H. Wu, The Proceeding of International Society for Optical Engineering, Vol. 8643, 2013.
“Emerging Liquid Crystal Technologies VIII,” L. C. Chien, The Proceeding of International Society for Optical Engineering, Vol. 8642, 2013.
“Advances in Display Technologies II,” L. C. Chien, S. D. Lee and M. H. Wu, The Proceeding of International Society for Optical Engineering, Vol. 8280, 2012.
“Emerging Liquid Crystal Technologies VII,” L. C. Chien and D. Broer, The Proceeding of International Society for Optical Engineering, Vol. 8279, 2012.
“Advances in Display Technologies; and E-papers and Flexible Displays,” K. Blankenbach L. C. Chien, S. D. Lee and M. H. Wu, The Proceeding of International Society for Optical Engineering, Vol. 7956, 2011.
“Emerging Liquid Crystal Technologies VI,” L. C. Chien, The Proceeding of International Society for Optical Engineering, Vol. 7955, 2011.
“Emerging Liquid Crystal Technologies V,” L. C. Chien, The Proceeding of International Society for Optical Engineering, Vol. 7618, 2010.
“Emerging Liquid Crystal Technologies IV,” L. C. Chien and M. Wu, The Proceeding of International Society for Optical Engineering, Vol. 7232, 2009.
Recent Publications (2009-2013)
T. Nose, L.-C. Chien, O. Catanescu, A. Golvin, Y. Ito, T. Sasamori, Y. Isota, R. Ito and M. Honma, “Improved high-frequency performance of microstrip-line-type liquid crystal phase shifter, Jpn. J. Appl. Phys. 52, 091701-1-5 (2013).
X.-S. Qian1, S.-G. Lu, X. Li, H. Gu, L.-C. Chien, Q. Zhang, “Large electrocaloric effect in a dielectric liquid possessing a large dielectric anisotropy near the isotropic–nematic transition,” Adv. Fuct. Mater. 23, 2894-2898 (2013).
D.-Y. Kim, S.-A Lee, H.-J. Choi, L.-C. Chien, M.-H. Lee and K.-U. Jeong, “Reversible actuating and writing behaviours of a head-to-side connected main-chain photochromic liquid crystalline polymer,” J. Mater. Chem C, 1, 1375-1382 (2013).
S.-H. Kim, L. Shi and L.-C. Chien, “Chiral Flexoelectro-Optic Effect in a Surface-Polymer Assisted Cholesterics with Uniform Lying Helix,” Ferroelectrics, 431, 81-88 (2012).
J.-M. Wong, J.-Y. Hwang and L.-C. Chien, “Electrically reconfigurable and thermally sensitive optical properties of gold nanorods dispersed liquid crystal blue phase” Soft Matter, 7, 7956-7959 (2011).
J.-Y. Hwang, D.-S. Seoa and L.-C. Chien, “Liquid crystal alignment on inorganic film by ion beam irradiation for flexible display applications”, Liq. Cryst. 38, 877-883 (2011).
C. Braganza, L.C. Chien, M.R. Fisch, R.G. Petschek, Spectrographic ellipsometry study of a liquid crystal display substrate consisting of thin films of SiO2, polyimide and indium tin oxide glass, Thin solid Films, 519, 4384-4389 (2011).
S.-Y. Lu and L.-C. Chien, “Electrically switched color with polymer-stabilized blue-phase liquid crystals,” Optics Lett. 35, 562-564 (2010).
H.-J. Choi, K.-U. Jeong, L.-C. Chien and M.-H. Lee, “Photochromic 3-dimensional actuator based on an uncrosslinked liquid crystal elastomer,” J. Mater. Chem., 19, 7124–7129 (2009).
S. H. Kim, L. Shi and L.-C. Chien, “Fast flexoelectric switching in a cholesteric liquid crystal cell with surface-localized polymer network,” J. Phys. D: Appl. Phys. 42, 195102 (2009).
J.-Y. Hwang and L.-C. Chien, “Liquid crystal alignment on inkjet printed and air-buffed polyimide with nano-grove surface,” J. Phys. D: Appl. Phys. 42, 055305 (2009).
Recent Conference Proceedings and Digest Papers (2009-2013)
M.-F. Wang, J.-Y. Hwang, and L.-C. Chien, “Colloidal particles doping effect on a blue-phase liquid crystal medium,” SID ‘11 Digest, 1654-1657 (2011).