Výsledky vyhledávání - "Heung Shik Park"

Akademický článek

Fine structure of the topological defect cores studied for disclinations in lyotropic chromonic liquid crystals

Autor: Shuang Zhou, Sergij V. Shiyanovskii, Heung-Shik Park, Oleg D. Lavrentovich

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

Topological defects play important roles in determining material properties, whilst their core regions remain unexplored due to strongly distorted structures. Zhouet al. take advantage of extended core regions in a chromonic liquid crystal and show b

Externí odkaz: https://doaj.org/article/c5a1587e585149c0ba057062cb9d55fd

Zobrazit plný text záznamu

Polyimide-Free Planar Alignment of Nematic Liquid Crystals: Sequential Interfacial Modifications through Dual-Wavelength in Situ Photoalignment

Autor: Myong-Hoon Lee, Vineet Kumar, Shin-Woong Kang, Jae Jin Lyu, Ho Lim, Keun Chan Oh, Heung-Shik Park, Aboozar Nasrollahi

Publikováno v: ACS Applied Materials & Interfaces. 11:15141-15151

High-quality alignment control of liquid crystals (LCs) for ultrahigh-definition large-sized display is a challenging task. A conventional rubbing method has obvious limitations for fabricating large-sized displays with a small pixel size and an unev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7240b2389b39ec57e42488eb2c2d47e1
https://doi.org/10.1021/acsami.9b02601

Zobrazit plný text záznamu

Manipulation of liquid crystal alignment through interfacial modification of photoresponsive polyimides remotely actuated by dual wavelength linearly polarized light

Autor: Myong-Hoon Lee, Vineet Kumar, Shin-Woong Kang, Sung Tae Shin, Aboozar Nasrollahi, Heung-Shik Park

Publikováno v: Journal of Molecular Liquids. 324:114778

High-quality alignment of liquid crystals (LCs) for large area display has been highly demanding for display market. To achieve a uniform and stable LC alignment, a photoresponsive azo-polyimide with two different substitution ratio of azo-dye moiety

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::422df251e58637445097693fe46fa5dc
https://doi.org/10.1016/j.molliq.2020.114778

Zobrazit plný text záznamu

Analysis of surface anchored lattice plane orientation in blue phase liquid crystal and its in-plane electric field-dependent capacitance response

Autor: Seong Cheol Noh, Hyuck Jin Lee, Chien-Tsung Hou, Seung Hee Lee, No Hyun Park, Prasenjit Nayek, Hiroshi Yokoyama, Heung Shik Park, Tsung-Hsien Lin

Publikováno v: Liquid Crystals. 42:1111-1119

Uniformly oriented macroscopic monodomain of cholesteric blue phase liquid crystal has been realised by the influence of surface anchoring. Orientation of the lattice planes in surface-treated (ST) and non-surface-treated (NST) cell were analysed and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d43c2b2cc27c348b22d8f654b58459c9
https://doi.org/10.1080/02678292.2015.1025874

Zobrazit plný text záznamu

Direct observation of liquid crystals using cryo-TEM: Specimen preparation and low-dose imaging

Autor: Helmut Gnägi, Volodymyr Borshch, Antal Jakli, Shuang Zhou, Heung-Shik Park, Wolfgang Weissflog, Fang Lin, Cuiyu Zhang, Benoît Zuber, Georg H. Mehl, Young-Ki Kim, Daniel Studer, Oleg D. Lavrentovich, Maria-Gabriela Tamba, Alexandra Kohlmeier, Min Gao

Publikováno v: Microscopy Research and Technique. 77:754-772

Liquid crystals (LCs) represent a challenging group of materials for direct transmission electron microscopy (TEM) studies due to the complications in specimen preparation and the severe radiation damage. In this paper, we summarize a series of speci

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47101e4244ffaeed3c730db5f6ef0b42
https://doi.org/10.1002/jemt.22397

Zobrazit plný text záznamu

Akademický článek

Three-Dimensional Imaging of Chemical Bond Orientation in Liquid Crystals by Coherent Anti-Stokes Raman Scattering Microscopy.

Autor: Saar, Brian G.¹, Heung-Shik Park², Xie, X. Sunney¹, Lavrentovich, Oleg D.² odl@lci.kent.edu

Publikováno v: Electronic-Liquid Crystal Communications (e-LC). Aug2007, p1-11. 11p. 2 Color Photographs, 3 Graphs.

Zobrazit plný text záznamu

Fine structure of the topological defect cores studied for disclinations in lyotropic chromonic liquid crystals

Autor: Oleg D. Lavrentovich, Sergij V. Shiyanovskii, Shuang Zhou, Heung-Shik Park

Publikováno v: Nature Communications
Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)

The detailed structure of singularities of ordered field represents a fundamental problem in diverse areas of physics. At the defect cores, the deformations are so strong that the system explores states with symmetry different from that of an undisto

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::313ab4d22e3af59fe2428d6872442f07
https://pubmed.ncbi.nlm.nih.gov/28429783

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání