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Liquid Crystals XXV最新文献

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Enhancing sensitivity of photoinduced molecular reorientation of oligothiophene-doped liquid crystals irradiated with a collimated laser beam 准直激光束辐照增强寡硫吩掺杂液晶光致分子重定向的灵敏度
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2596371
Kohsuke Matsumoto, K. Usui, A. Shishido
{"title":"Enhancing sensitivity of photoinduced molecular reorientation of oligothiophene-doped liquid crystals irradiated with a collimated laser beam","authors":"Kohsuke Matsumoto, K. Usui, A. Shishido","doi":"10.1117/12.2596371","DOIUrl":"https://doi.org/10.1117/12.2596371","url":null,"abstract":"Liquid crystals (LCs) have been utilized for the innovative optical devices because the molecular reorientation triggers a change in their optical properties. Among them, oligothiophene-doped LCs can induce the molecular reorientation by irradiation with a laser beam, which is useful for all-optical devices. However, the photoinduced reorientational behavior was observed only by irradiation with a high-intensity laser beam. In this study, we investigated the effect of incident light properties on photoresponsive behavior of oligothiophene-doped LCs by irradiation with a collimated laser beam from the perspective of improvement of the photoresponsive sensitivity of the molecular reorientation. \u0000As a result, the irradiation of oligothiophene-doped LCs with a collimated laser beam enhanced the sensitivity of the molecular reorientation.","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129435033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the electro-optic response of stabilized cholesteric liquid crystals containing a non-liquid crystalline polymer network 探索含有非液晶聚合物网络的稳定胆甾液晶的电光响应
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2594769
Brian P. Radka, T. White
{"title":"Exploring the electro-optic response of stabilized cholesteric liquid crystals containing a non-liquid crystalline polymer network","authors":"Brian P. Radka, T. White","doi":"10.1117/12.2594769","DOIUrl":"https://doi.org/10.1117/12.2594769","url":null,"abstract":"","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126753362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gradient-index volume holograms by 2-photon polymerization 双光子聚合的梯度指数体积全息图
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2594248
Niyazi Ulaş Dinç, Giulia Panusa, C. Moser, D. Psaltis
{"title":"Gradient-index volume holograms by 2-photon polymerization","authors":"Niyazi Ulaş Dinç, Giulia Panusa, C. Moser, D. Psaltis","doi":"10.1117/12.2594248","DOIUrl":"https://doi.org/10.1117/12.2594248","url":null,"abstract":"Advancements in 3D printing, specifically by 2-photon polymerization, enabled the fabrication of high resolution novel optical elements for various applications by engineering the topography of the structures. Recently, the ability to obtain a varying refractive index distribution by 2-photon polymerization also started to gain momentum to design and produce gradient-index (GRIN) micro-optics. Here, we demonstrate micro-scale volume holograms by 2-photon polymerization by tuning the exposure point by point in the 3D volume to obtain the necessary refractive index distribution. 3D printed micro-scale GRIN volume holograms lay an opportunity to open a complimentary dimension in various systems thanks to in-situ fabrication advantage, which can provide complex interconnections and beam shaping in micro-scale.","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133299730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Liquid-crystal-based chiral photonic crystals for polarization rotation of complex vector fields 液晶基手性光子晶体用于复矢量场的偏振旋转
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2596335
Chun-Wei Chen, I. Khoo
{"title":"Liquid-crystal-based chiral photonic crystals for polarization rotation of complex vector fields","authors":"Chun-Wei Chen, I. Khoo","doi":"10.1117/12.2596335","DOIUrl":"https://doi.org/10.1117/12.2596335","url":null,"abstract":"","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127348817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of molecularly oriented organic semiconductor thin film utilizing its potential as a liquid crystal 利用分子取向有机半导体薄膜作为液晶的潜力制造
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2597669
M. Ozaki
{"title":"Fabrication of molecularly oriented organic semiconductor thin film utilizing its potential as a liquid crystal","authors":"M. Ozaki","doi":"10.1117/12.2597669","DOIUrl":"https://doi.org/10.1117/12.2597669","url":null,"abstract":"","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131767696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Quantitative analysis of surface bending strain in polyethylene terephthalate films 聚对苯二甲酸乙二醇酯薄膜表面弯曲应变的定量分析
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2596383
Yuhao Zhang, Masayuki Kishino, Ryoga Taguchi, N. Akamatsu, Shishido Atsushi
{"title":"Quantitative analysis of surface bending strain in polyethylene terephthalate films","authors":"Yuhao Zhang, Masayuki Kishino, Ryoga Taguchi, N. Akamatsu, Shishido Atsushi","doi":"10.1117/12.2596383","DOIUrl":"https://doi.org/10.1117/12.2596383","url":null,"abstract":"","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131021541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantification of internal strain in bent soft materials by a cholesteric liquid crystal elastomer 用胆甾液晶弹性体定量测定弯曲软材料的内部应变
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2595838
Masayuki Kishino, N. Akamatsu, S. Kubo, K. Hisano, O. Tsutsumi, A. Shishido
{"title":"Quantification of internal strain in bent soft materials by a cholesteric liquid crystal elastomer","authors":"Masayuki Kishino, N. Akamatsu, S. Kubo, K. Hisano, O. Tsutsumi, A. Shishido","doi":"10.1117/12.2595838","DOIUrl":"https://doi.org/10.1117/12.2595838","url":null,"abstract":"To develop flexible devices that have mechanical durability, understanding the bending behavior of soft material components is quite important. However, measuring bending strain in soft materials has been limited to their surface due to experimental constraints. In addition to the surface strain analysis, internal strain analysis will further clarify the bending behavior of soft materials. In this study, we quantified internal strain in bending polydimethylsiloxane (PDMS) films, which are a common soft material, through the selective reflection of a cholesteric liquid crystal elastomer (CLCE). The strain analysis with the CLCE revealed that internal strains depend on the position of the bending PDMS films. This internal strain quantification of soft materials leads to the development of flexible devices with high mechanical durability.","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121394482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuning selective reflections from cholesteric liquid crystals without external stimuli 无外界刺激的胆甾液晶选择性反射调谐
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2594989
Jiyang Park, Sooyeon Bae, N. Y. Ha
{"title":"Tuning selective reflections from cholesteric liquid crystals without external stimuli","authors":"Jiyang Park, Sooyeon Bae, N. Y. Ha","doi":"10.1117/12.2594989","DOIUrl":"https://doi.org/10.1117/12.2594989","url":null,"abstract":"","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126069997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From optical to topological data analysis of colloidal and structured liquid crystals 从光学到拓扑数据分析胶体和结构液晶
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2594168
M. Kaczmarek, I. M. Solis, T. Orlova, Karolina Bednarska, P. Lesiak, T. Wolinski, G. D’Alessandro, J. Brodzki
{"title":"From optical to topological data analysis of colloidal and structured liquid crystals","authors":"M. Kaczmarek, I. M. Solis, T. Orlova, Karolina Bednarska, P. Lesiak, T. Wolinski, G. D’Alessandro, J. Brodzki","doi":"10.1117/12.2594168","DOIUrl":"https://doi.org/10.1117/12.2594168","url":null,"abstract":"Colloidal liquid crystals offer a route to change physical properties and create micro and nano structures. Optical methods only characterise relatively simple colloidal systems. More complex systems require powerful data analytic methods. We present a new approach using Topological Data Analysis to reveal the structural and morphological features in a nematic liquid crystal doped with gold nanoparticles confined in a thin capillary, including the changes occurring during phase transitions. Our topological framework allows us to identify distinct temperature-induced macroscopic states, obtain a geometric representation of the time-dependent topological states and identify several configurations with different degrees of symmetry and order.","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129461241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unidirectional alignment of surface-modified ZnO nanorods in nematic liquid crystals 向列液晶中表面修饰ZnO纳米棒的单向排列
Liquid Crystals XXV Pub Date : 2021-08-01 DOI: 10.1117/12.2596122
Kaho Ogata, Y. Kobayashi, Kohsuke Matsumoto, S. Kubo, A. Shishido
{"title":"Unidirectional alignment of surface-modified ZnO nanorods in nematic liquid crystals","authors":"Kaho Ogata, Y. Kobayashi, Kohsuke Matsumoto, S. Kubo, A. Shishido","doi":"10.1117/12.2596122","DOIUrl":"https://doi.org/10.1117/12.2596122","url":null,"abstract":"Inorganic materials such as nanotubes and nanorods have attracted much attention due to their anisotropic properties. Although controlling the alignment of inorganic materials is able to enhance their functionality, macroscopic alignment over a large area remains a challenge. We have recently proposed a simple method for inducing unidirectional alignment of ZnO nanorods on a rubbed polyimide layer. In this method, ZnO nanorods grafted with liquid-crystalline (LC) polymers are aligned by cooperative interaction between the LC moieties in the grafted polymers and surrounding LC host molecules. In this study, we investigated the unidirectional alignment of surface-modified ZnO nanorods in nematic LCs in a micrometer-thick cells. Alignment of LC polymer-grafted ZnO nanorods along nematic LC host molecules has been revealed by polarized optical micrography and ultraviolet-visible absorption spectroscopy.","PeriodicalId":145723,"journal":{"name":"Liquid Crystals XXV","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134078772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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