Embedded Files
The structure of Blue Phase I LC
(from Hiroyuki Yoshida)
Welcome
Welcome
Liquid Crystal Materials Research Laboratory (LCMRL) was established at Department of Photonics, Feng Chia University in Taichung, Taiwan since 2007, and moved to Department of Physics, National Chung Hsing University. The main research topic is to study the electro-optic effects and physical properties of blue phase liquid crystal and cholesteric liquid crystal.
本實驗室成立於2007年08月1日，主要的研究方向與主題著重在膽固醇液晶與液晶藍相的電光效應與物理特性。歡迎有興趣的同學及老師蒞臨本實驗室參觀。
Our Research Highlight
Our Research Highlight
Multi‐Order Bragg Response and Field‐Driven Polarization Switching in Heliconical Cholesteric
Advanced Optical Materials, 14(16), e71208 (2026)
Chien Yeh Sung, Yi Chen Wu, Nien Chen Lee, Fumito Araoka, and Hui-Yu Chen
We report a heliconical cholesteric liquid crystal (ChOHChOH) system that exhibits electrically tunable, multi‐order Bragg reflections spanning from the ultraviolet to near‐infrared range. The system is composed of a binary mixture of a flexible dimer (CB7CB) and rod‐like nematic liquid crystal (E7), doped with a left‐handed chiral compound. The heliconical structure supports simultaneous reflections at both the full‐pitch (PP) and half‐pitch (P/2P/2) periodicities, with distinct polarizati characteristics: the PP‐order reflection yields linearly polarized light, whereas the P/2P/2‐order produces circularly polarized reflection. Notably, these optical features are observable even under normal light incidence, in contrast to prior reports requiring oblique geometries. Furthermore, robust and reversible tuning of both reflection wavelength and polarization state is achieved via low‐voltage electric fields across a range of surface alignments, including untreated substrates. The system also displays a previously unreported two‐stage reflection behavior and hysteresis under increasing and decreasing electric fields. These findings highlight a versatile, alignment‐independent approach to field‐tunable photonic materials with potential applications in reflective displays, smart windows, and polarization‐multiplexed devices.
https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adom.71208
Electrically Tunable Coupling Between Band‐Edge Lasing and Whispering Gallery Modes in Liquid Crystal Microdroplets
Advanced Optical Materials, 13(14), 2403124 (2025).
Yu‐Chuan Tsao, Hui-Yu Chen, and Yang-Fang Chen
This study explores the enhancement of band‐edge laser performance through the coupling with whispering gallery modes (WGMs) in electrically tunable blue‐phase liquid crystal (BPLC) microdroplets. BPLCs, known for their fast electro‐optical response and photonic bandgap properties, are confined within microscale droplets to induce WGMs, which significantly improve band‐edge lasing efficiency. A reversible coupling between band‐edge and WGM lasing modes is demonstrated by applying an external electric field. The WGMs, formed by total internal reflection along the BPLC microdroplet boundary, reduce the lasing threshold to improve the performance of the band‐edge laser. This dual‐mode operation also enables to dynamically control the laser's wavelength and polarization with a wide range, expanding its applicability in optical communication and sensing technologies. These findings provide a valuable approach based on the coupling mechanisms between photonic bandgap materials and WGMs, contributing to the future development of highly tunable and adaptive photonic devices.
https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403124
News
News
2026.09 恭賀 期刊論文被接受Yu‐Chuan Tsao,Ya-Ping Hsieh, Hui-Yu Chen, and Yang-Fang Chen, "Electrically Reconfigurable Optical Initialization of Spin Valley Polarization in Monolayer WS2 Enabled by Switchable Dual‐Mode Liquid Crystal Lasers," Advanced Optical Materials, 14(16), e71781 (2026). (https://advanced.onlinelibrary.wiley.com/doi/10.1002/adom.71781?utm_source=researchgate.net&utm_medium=article)
2026.04 恭賀 期刊論文被接受Chien Yeh Sung, Yi Chen Wu, Nien Chen Lee, Fumito Araoka, and Hui-Yu Chen, "Multi‐Order Bragg Response and Field‐Driven Polarization Switching in Heliconical Cholesteric," Advanced Optical Materials, 14(16), e71208 (2026). (https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adom.71208)
2025.03 恭賀 期刊論文被接受Yu‐Chuan Tsao, Hui-Yu Chen, and Yang-Fang Chen, "Electrically Tunable Coupling Between Band‐Edge Lasing and Whispering Gallery Modes in Liquid Crystal Microdroplets,"Advanced Optical Materials, 13(14), 2403124 (2025). (https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403124)
2024.01 恭賀 期刊論文被接受Yu‐Chuan Tsao, Hui-Yu Chen, and Yang-Fang Chen, "An Electrically Tunable Dual‐Mode Laser Based on Self‐Assembled Soft Photonic Liquid Crystals," Advanced Functional Materials, 34(17), 23115101 (2024).(https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.202311510)
2023.03 恭賀 期刊論文被接受Hui-Yu Chen, Fumito Araoka, Fang-Yu Lee, Chi Lee and Jui Jiun Chen, "Field-induced second-harmonic generation induced by distorted soft chiral crystal," Journal of Physics D: Appl. Phys. 56 125303 (2023). (https://iopscience.iop.org/article/10.1088/1361-6463/acbe09)
2023.03 恭賀 蘇冠丞同學入選國際液晶學會(ILCS)2023年3 月特選液晶照片 https://www.ilcsoc.org/art-contest/featured-art/
2022.07 恭賀 實驗室獲得科技部工程司光電學門補助三年期計畫 3,600,000元。
2022.02 恭賀 王內均，蘇冠丞、李騏及蘇峻賢同學研討會論文被ILCC 2022接受 A easy method to form a single-domain liquid-crystal blue phase and its optical properties
2022.02 恭賀 陳睿駿同學研討會論文被ILCC 2022接受 Growth of blue phase liquid crystals on nanoporous membranes
2021.08 恭賀 期刊論文被接受 Hui-Yu Chen, Yu-Chuan Tsao, Chin-Ho Chang, and Jui Jiun Chen, "A stable reflective state induced by a disturbed planar texture in surface-treatment-free chiral nematic liquid crystals", Accepted by Optics Express 2021/08/26 （https://doi.org/10.1364/OE.438880）
2020.09 恭賀 李騏同學入選國際液晶學會(ILCS)2020年9 月特選液晶照片 Link
2020.01 恭賀 期刊論文被接受 Hui-Yu Chen and Kuo-Cheng Hsu, "SElectrically tunable and reversible selective reflection due to the transition between simple cubic and tetragonal blue-phase liquid crystals, Liquid Crystals, Published Online 2020/01/03
2019.11 恭賀 期刊論文被接受 Hui-Yu Chen and Yen-Wen Wang, "Symmetry Breaking Induced
Pockels Effect in a Tilted Field Switching BPIII Cell," Crystals 2019, 9(11), 598.
2019.01 恭賀 期刊論文被接受 Hui-Yu Chen and Hao-Yu Tu "Optical polarization state of an IPS-BPII cell," Accepted by OSA Continuum.
2018.07: 恭賀 本實驗室杜浩宇同學得科技部自然司物理學門補助研究生出席國際會議經費。
2018.04: 恭賀 本實驗室王彥文，杜浩宇同學，論文獲2018 International Liquid Crystal Conference 接受，於2018/07在日本京都發表。
2017.07 恭賀 實驗室獲得科技部自然司物理學門計畫補助1,140,000元。
2017.04 恭賀 期刊論文刊登 Hui-Yu Chen, Sheng-Feng Lu, Pin-Hung Wu and Ching-Sheng Wang, " Transflective BPIII mode with no internal reflector," Liquid Crystals, 44:3, 473-478 (2017)
2016.07: 恭賀 實驗室獲得科技部自然司物理學門計畫補助1,255,000元。
2016.07: 恭賀 期刊論文接受 Hui-Yu Chen, Sheng-Feng Lu, Pin-Hung Wu and Ching-Sheng Wang, " Transflective BPIII mode with no internal reflector," Published online Liquid Crystals (2016/08).
2016.03: 恭賀 期刊論文接受 Hui-Yu Chen, Che-Kai Wu, Fang-Chi Chen, and Chia-Sheng Chen, “Investigation on morphology of polymer structure in polymer-stabilized blue phase," Liquid Crystal, 43(10), 1351-1358 (2016)..
2016.01: 恭賀 本實驗室兩篇論文獲2016 MRS Spring Meeting接受，於3/30在美國鳳凰城口頭發表。
2015.07: 恭賀 碩士班學生 吳鑌紘、林子程獲科技部"研究生出席國際會議"補助，前往波蘭發表論文。
2015.07: 恭賀 實驗室獲得科技部自然司物理學門計畫補助1,876,000元。
2015. 06 : 恭賀 期刊論文接受 Hui-Yu Chen and Yi-Chun Hsieh, “Lattice structures in liquid-crystal blue phase with various chiral concentrations," Liquid Crystals, 42 (10), 1472-1477 (2015/06).
2015. 05 : 恭賀 碩士班吳鑌紘及林子程同學論文被 OLC'15接受(海報發表)
2014.12: 恭賀 期刊論文發表 Yi-Chun Hsieh, Sheng-Feng Lu, Yu-Jie Huang, and Hui-Yu Chen*, “Do the reflection colors of BPI depend linearly on chiral concentration?,” Molecular Crystal and Liquid Crystals 595(1), 63–69 (2014).
2014.03 : 恭賀 碩士班謝宜君同學、陳芳琪同學論文被 ILCC'14接受(海報發表)
2013.07 : 恭賀 本實驗室於Journal of Applied Physics 期刊發表之 "Fast Tunable Reflection in Amorphous Blue Phase III Liquid Crystal" 自2013年3月發表以來，下載次數達到138次
2013.06 : 恭賀 碩士班陳芳琪同學論文被 OLC'13接受(口頭發表)
2013.06 : 恭賀 碩士班謝宜君同學論文被 OLC'13接受並選為ICAM Graduate Student Workshop獎金(口頭發表)
2013.06 : 恭賀 碩士班邱治豪同學、呂昇峰同學、陳佳陞同學論文被 OLC'13接受(海報發表)
2013.03 : 恭賀 期刊論文發表 Hui-Yu Chen*, Sheng-Feng Lu, and Yi-Chun Hsieh, "Unusual electro-optical behavior in a wide-temperature BPIII cell," Optics Express , 21,9774 , 2013-04.
2013.03 : 恭賀 期刊論文發表 Hui-Yu Chen*, Jia-Liang Lai, Chun-Cheng Chan, and Chih-Han Tseng, "Fast tunable reflection in amorphous blue phase III liquid crystal," Journal of Applied Physics , 113/13, 123103 , 2013-03
2012.12 : 恭賀 學士班呂昇峰同學、張寧安同學、陳佳陞同學論文被 IDW'12接受(口頭發表)
2012.08 : 恭賀 碩士班周冠翰、吳哲凱、曾志翰、邱治豪同學論文被 ILCC'12接受(海報發表)
2012.05 : 恭賀 碩士班周冠翰同學論文被 SID'12接受(海報發表)
2011.07 : 恭賀 碩士班賴佳良同學論文被 IDW'11接受(口頭發表)
2011.07 : 恭賀 碩士班邱繼毅同學、陳泓瑋同學順利 通過碩士班口試
2011.06 : 恭賀 本實驗室大三專題生 詹鈞証同學獲得 光電系期末專題海報發表 優等獎
2011.04 : 2011SID Conference paper "Fast-Color-Switching Device in a Liquid-Crystal Blue-Phase Cell"被選為 "Best of the SID11 Symposium' (最佳論文)
2010.11 : Hui-Yu Chen*, Hsin-Hung Liu, Jia-Liang Lai, and Ji-Yi Chou, "Relation between physical parameters and thermal stability of liquid-crystal
blue phase,"Applied Physics Letters , 97/18 , pp. 1919-1919 , 2010-11. (SCI)
2010.10.01 : 賴佳良同學入選國際液晶學會(ILCS)2010年10月特選液晶照片 Link
2010.06.01 : 邱治豪同學入選國際液晶學會(ILCS)2010年06月特選液晶照片 Link
Recommend websites
Recommend websites
Page updated
Google Sites
Report abuse