V. Sharma, Pankaj Kumar, Chinky, Ridhima Gahrotra, K. Raina, P. Malik
{"title":"纳米粒子对聚合物分散液晶正模电光性能的影响","authors":"V. Sharma, Pankaj Kumar, Chinky, Ridhima Gahrotra, K. Raina, P. Malik","doi":"10.1063/1.5122510","DOIUrl":null,"url":null,"abstract":"Polymer dispersed liquid crystal (PDLC) is a striking material and have an enormous role in electro optic display devices. In this paper, nanoparticles (NPs) doped PDLCs in normal mode were prepared from a mixture of UV curable liquid polymer, nematic liquid crystal (LC) and silica NPs by the polymerization induced phase separation (PIPS) process. Morphological study shows the LC droplets cluster formation in pure PDLC and LC droplets with a more uniform phase separated polymer matrix in NPs doped PDLC due to the heterogeneous nucleation rate caused by the increased nucleation at the surface of NPs. Further, electro optic properties of doped and pure PDLC including transmittance, driving voltage, contrast ratio and sharpness as well as slope of the linear region of the transmittance-voltage were measured, compared and analyzed. Driving voltage of NPs doped PDLCs quite improved, however the slope of linear region and contrast ratio declined as compared to pure PDLC.Polymer dispersed liquid crystal (PDLC) is a striking material and have an enormous role in electro optic display devices. In this paper, nanoparticles (NPs) doped PDLCs in normal mode were prepared from a mixture of UV curable liquid polymer, nematic liquid crystal (LC) and silica NPs by the polymerization induced phase separation (PIPS) process. Morphological study shows the LC droplets cluster formation in pure PDLC and LC droplets with a more uniform phase separated polymer matrix in NPs doped PDLC due to the heterogeneous nucleation rate caused by the increased nucleation at the surface of NPs. Further, electro optic properties of doped and pure PDLC including transmittance, driving voltage, contrast ratio and sharpness as well as slope of the linear region of the transmittance-voltage were measured, compared and analyzed. Driving voltage of NPs doped PDLCs quite improved, however the slope of linear region and contrast ratio declined as compared to pure PDLC.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"94 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":"{\"title\":\"Effect of nano particles on electro optic properties of polymer dispersed liquid crystal in normal mode\",\"authors\":\"V. Sharma, Pankaj Kumar, Chinky, Ridhima Gahrotra, K. Raina, P. Malik\",\"doi\":\"10.1063/1.5122510\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polymer dispersed liquid crystal (PDLC) is a striking material and have an enormous role in electro optic display devices. In this paper, nanoparticles (NPs) doped PDLCs in normal mode were prepared from a mixture of UV curable liquid polymer, nematic liquid crystal (LC) and silica NPs by the polymerization induced phase separation (PIPS) process. Morphological study shows the LC droplets cluster formation in pure PDLC and LC droplets with a more uniform phase separated polymer matrix in NPs doped PDLC due to the heterogeneous nucleation rate caused by the increased nucleation at the surface of NPs. Further, electro optic properties of doped and pure PDLC including transmittance, driving voltage, contrast ratio and sharpness as well as slope of the linear region of the transmittance-voltage were measured, compared and analyzed. Driving voltage of NPs doped PDLCs quite improved, however the slope of linear region and contrast ratio declined as compared to pure PDLC.Polymer dispersed liquid crystal (PDLC) is a striking material and have an enormous role in electro optic display devices. In this paper, nanoparticles (NPs) doped PDLCs in normal mode were prepared from a mixture of UV curable liquid polymer, nematic liquid crystal (LC) and silica NPs by the polymerization induced phase separation (PIPS) process. Morphological study shows the LC droplets cluster formation in pure PDLC and LC droplets with a more uniform phase separated polymer matrix in NPs doped PDLC due to the heterogeneous nucleation rate caused by the increased nucleation at the surface of NPs. Further, electro optic properties of doped and pure PDLC including transmittance, driving voltage, contrast ratio and sharpness as well as slope of the linear region of the transmittance-voltage were measured, compared and analyzed. Driving voltage of NPs doped PDLCs quite improved, however the slope of linear region and contrast ratio declined as compared to pure PDLC.\",\"PeriodicalId\":7262,\"journal\":{\"name\":\"ADVANCES IN BASIC SCIENCE (ICABS 2019)\",\"volume\":\"94 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-08-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ADVANCES IN BASIC SCIENCE (ICABS 2019)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1063/1.5122510\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1063/1.5122510","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effect of nano particles on electro optic properties of polymer dispersed liquid crystal in normal mode
Polymer dispersed liquid crystal (PDLC) is a striking material and have an enormous role in electro optic display devices. In this paper, nanoparticles (NPs) doped PDLCs in normal mode were prepared from a mixture of UV curable liquid polymer, nematic liquid crystal (LC) and silica NPs by the polymerization induced phase separation (PIPS) process. Morphological study shows the LC droplets cluster formation in pure PDLC and LC droplets with a more uniform phase separated polymer matrix in NPs doped PDLC due to the heterogeneous nucleation rate caused by the increased nucleation at the surface of NPs. Further, electro optic properties of doped and pure PDLC including transmittance, driving voltage, contrast ratio and sharpness as well as slope of the linear region of the transmittance-voltage were measured, compared and analyzed. Driving voltage of NPs doped PDLCs quite improved, however the slope of linear region and contrast ratio declined as compared to pure PDLC.Polymer dispersed liquid crystal (PDLC) is a striking material and have an enormous role in electro optic display devices. In this paper, nanoparticles (NPs) doped PDLCs in normal mode were prepared from a mixture of UV curable liquid polymer, nematic liquid crystal (LC) and silica NPs by the polymerization induced phase separation (PIPS) process. Morphological study shows the LC droplets cluster formation in pure PDLC and LC droplets with a more uniform phase separated polymer matrix in NPs doped PDLC due to the heterogeneous nucleation rate caused by the increased nucleation at the surface of NPs. Further, electro optic properties of doped and pure PDLC including transmittance, driving voltage, contrast ratio and sharpness as well as slope of the linear region of the transmittance-voltage were measured, compared and analyzed. Driving voltage of NPs doped PDLCs quite improved, however the slope of linear region and contrast ratio declined as compared to pure PDLC.
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