南方科技大学知识苑(SUSTech KC): Flow-driven disclination lines of nematic liquid crystals inside a rectangular microchannel

题名	Flow-driven disclination lines of nematic liquid crystals inside a rectangular microchannel
作者	Liu, Zongdai1,2 ; Luo, Dan2 ; Yang, Kun-Lin 1
通讯作者	Luo, Dan; Yang, Kun-Lin
发表日期	2019-07-28
DOI	10.1039/c9sm00900k
发表期刊	Soft Matter 影响因子和分区
ISSN	1744-683X
EISSN	1744-6848
卷号	15 期号:28页码:5638-5643
摘要	For nematic liquid crystals (LCs), a disclination line is formed when the director of the LCs changes abruptly. In this study, we demonstrate an approach to form dynamic disclination lines by flowing the nematic liquid crystal 4-cyano-4 '-pentylbiphenyl (5CB) in rectangular microchannels with a large aspect ratio. The dynamic disclination line moves gradually from the side toward the centre of the microchannel when the Ericksen number reaches 8.5. At the critical Ericksen number, influence of the anchoring energy on the side wall extends to the centre of the microchannel and determines the final position of the dynamic disclination line. As a result, the orientation of the LC is influenced by surface defects of the side wall. This phenomenon can be used to detect minute surface defects on the side wall and is potentially useful for visual sensing applications that require high sensitivity.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	通讯
资助项目	Shenzhen Science and Technology Innovation Council[JCYJ20160226192528793] ; Shenzhen Science and Technology Innovation Council[KQTD2015071710313656]
WOS研究方向	Chemistry ; Materials Science ; Physics ; Polymer Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science
WOS记录号	WOS:000476561700007
出版者	ROYAL SOC CHEMISTRY
EI入藏号	20193007227379
EI主题词	Aspect ratio ; Microchannels ; Surface defects ; Wall flow
EI分类号	Fluid Flow, General:631.1 ; Materials Science:951
来源库	Web of Science
引用统计	被引频次[WOS]：14
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/25464
专题	工学院_电子与电气工程系
作者单位	1.Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr 4, Singapore 117576, Singapore 2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Xueyuan Rd 1088, Shenzhen 518055, Guangdong, Peoples R China
第一作者单位	电子与电气工程系
通讯作者单位	电子与电气工程系
推荐引用方式 GB/T 7714	Liu, Zongdai,Luo, Dan,Yang, Kun-Lin. Flow-driven disclination lines of nematic liquid crystals inside a rectangular microchannel[J]. Soft Matter,2019,15(28):5638-5643.
APA	Liu, Zongdai,Luo, Dan,&Yang, Kun-Lin.(2019).Flow-driven disclination lines of nematic liquid crystals inside a rectangular microchannel.Soft Matter,15(28),5638-5643.
MLA	Liu, Zongdai,et al."Flow-driven disclination lines of nematic liquid crystals inside a rectangular microchannel".Soft Matter 15.28(2019):5638-5643.