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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201702354
|2 doi
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|a pubmed24n0923.xml
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|a (DE-627)NLM276928725
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|a (NLM)29023971
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|a DE-627
|b ger
|c DE-627
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|a eng
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|a Nishikawa, Hiroya
|e verfasserin
|4 aut
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|a A Fluid Liquid-Crystal Material with Highly Polar Order
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a An anomalously large dielectric permittivity of ≈104 is found in the mesophase temperature range (MP phase) wherein high fluidity is observed for a liquid-crystal compound having a 1,3-dioxane unit in the mesogenic core (DIO). In this temperature range, no sharp X-ray diffraction peak is observed at both small and wide Bragg angles, similar to that for a nematic phase; however, an inhomogeneous sandy texture or broken Schlieren one is observed via polarizing optical microscopy, unlike that for a conventional nematic phase. DIO exhibits polarization switching with a large polarization value, i.e., P = 4.4 µC cm-2 , and a parallelogram-shaped polarization-electric field hysteresis loop in the MP phase. The inhomogeneously aligned DIO in the absence of an electric field adopts a uniform orientation along an applied electric field when field-induced polarization switching occurs. Furthermore, sufficiently larger second-harmonic generation is observed for DIO in the MP phase. Second-harmonic-generation interferometry clearly shows that the sense of polarization is inverted when the +/- sign of the applied electric field in MP is reversed. These results suggest that a unidirectional, ferroelectric-like parallel polar arrangement of the molecules is generated along the director in the MP phase
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|a Journal Article
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|a dielectric anisotropy
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|a ferroelectric-like polarization
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|a highly polar order
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|a liquid crystals
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|a Shiroshita, Kazuya
|e verfasserin
|4 aut
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1 |
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|a Higuchi, Hiroki
|e verfasserin
|4 aut
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1 |
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|a Okumura, Yasushi
|e verfasserin
|4 aut
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1 |
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|a Haseba, Yasuhiro
|e verfasserin
|4 aut
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1 |
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|a Yamamoto, Shin-Ichi
|e verfasserin
|4 aut
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1 |
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|a Sago, Koki
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kikuchi, Hirotsugu
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 43 vom: 10. Nov.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:43
|g day:10
|g month:11
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|u http://dx.doi.org/10.1002/adma.201702354
|3 Volltext
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