Enhancement of electro-optical response of ferroelectric liquid crystal: the role of graphene quantum dots

Veeresh Kumar; Ajay Kumar; Ashok M. Biradar; G. B. Reddy; Divya Sachdev; Renu Pasricha

doi:10.1080/02678292.2014.949888

Enhancement of electro-optical response of ferroelectric liquid crystal: the role of graphene quantum dots

Veeresh Kumar, Ajay Kumar, Ashok M. Biradar, G. B. Reddy, Divya Sachdev, Renu Pasricha

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Abstract

We present a pioneer study depicting a significant improvement in the photoluminescence (PL) intensity and display of an expeditious electro-optic response of ferroelectric liquid crystal (FLC) when doped with graphene quantum dots (GQDs). Significant threefold enhancement in PL intensity of GQDs/FLC composite material can be ascribed to the additive combination of emissions from GQDs and FLCs. Furthermore, promptness in electro-optical response by a factor of 34% can be attributed to the lowering of rotational viscosity of the FLC material due to the incorporation of GQDs. These results would certainly be helpful in realisation of highly luminescent and faster generation of LC systems.

Original language	English (US)
Pages (from-to)	1719-1725
Number of pages	7
Journal	Liquid Crystals
Volume	41
Issue number	12
DOIs	https://doi.org/10.1080/02678292.2014.949888
State	Published - Dec 2 2014

Keywords

Raman
graphene quantum dots
photoluminescence
response time

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1080/02678292.2014.949888

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title = "Enhancement of electro-optical response of ferroelectric liquid crystal: the role of graphene quantum dots",

abstract = "We present a pioneer study depicting a significant improvement in the photoluminescence (PL) intensity and display of an expeditious electro-optic response of ferroelectric liquid crystal (FLC) when doped with graphene quantum dots (GQDs). Significant threefold enhancement in PL intensity of GQDs/FLC composite material can be ascribed to the additive combination of emissions from GQDs and FLCs. Furthermore, promptness in electro-optical response by a factor of 34% can be attributed to the lowering of rotational viscosity of the FLC material due to the incorporation of GQDs. These results would certainly be helpful in realisation of highly luminescent and faster generation of LC systems.",

keywords = "Raman, graphene quantum dots, photoluminescence, response time",

author = "Veeresh Kumar and Ajay Kumar and Biradar, {Ashok M.} and Reddy, {G. B.} and Divya Sachdev and Renu Pasricha",

note = "Funding Information: The authors sincerely thank Professor R.C. Budhani, Director, CSIR-National Physical Laboratory, New Delhi, for allowing us to do this work. Veeresh Kumar thanks the University Grant Commission, Government of India for the research fellowship. We would also like to acknowledge Dr D. Haranath{\textquoteright}s support for the luminescence studies. Publisher Copyright: {\textcopyright} 2014, {\textcopyright} 2014 Taylor & Francis.",

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doi = "10.1080/02678292.2014.949888",

language = "English (US)",

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T2 - the role of graphene quantum dots

AU - Kumar, Veeresh

AU - Kumar, Ajay

AU - Biradar, Ashok M.

AU - Reddy, G. B.

AU - Sachdev, Divya

AU - Pasricha, Renu

N1 - Funding Information: The authors sincerely thank Professor R.C. Budhani, Director, CSIR-National Physical Laboratory, New Delhi, for allowing us to do this work. Veeresh Kumar thanks the University Grant Commission, Government of India for the research fellowship. We would also like to acknowledge Dr D. Haranath’s support for the luminescence studies. Publisher Copyright: © 2014, © 2014 Taylor & Francis.

PY - 2014/12/2

Y1 - 2014/12/2

N2 - We present a pioneer study depicting a significant improvement in the photoluminescence (PL) intensity and display of an expeditious electro-optic response of ferroelectric liquid crystal (FLC) when doped with graphene quantum dots (GQDs). Significant threefold enhancement in PL intensity of GQDs/FLC composite material can be ascribed to the additive combination of emissions from GQDs and FLCs. Furthermore, promptness in electro-optical response by a factor of 34% can be attributed to the lowering of rotational viscosity of the FLC material due to the incorporation of GQDs. These results would certainly be helpful in realisation of highly luminescent and faster generation of LC systems.

AB - We present a pioneer study depicting a significant improvement in the photoluminescence (PL) intensity and display of an expeditious electro-optic response of ferroelectric liquid crystal (FLC) when doped with graphene quantum dots (GQDs). Significant threefold enhancement in PL intensity of GQDs/FLC composite material can be ascribed to the additive combination of emissions from GQDs and FLCs. Furthermore, promptness in electro-optical response by a factor of 34% can be attributed to the lowering of rotational viscosity of the FLC material due to the incorporation of GQDs. These results would certainly be helpful in realisation of highly luminescent and faster generation of LC systems.

KW - Raman

KW - graphene quantum dots

KW - photoluminescence

KW - response time

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JO - Liquid Crystals

JF - Liquid Crystals

IS - 12

ER -

Enhancement of electro-optical response of ferroelectric liquid crystal: the role of graphene quantum dots

Abstract

Keywords

ASJC Scopus subject areas

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