Authors
- Santosh A. Mani 1
- Sameer U. Hadkar 2
- Jyoti R. Amare 3
- Madhavi S. Pradhan 3
- Hind Al-Johani 4
- Pradip B. Sarawade 3
1 Department of Physics, University of Mumbai, Mumbai 400 098, India K. J. Somaiya College of Engineering, Vidyavihar, Mumbai 400 077, India
2 Department of Physics, University of Mumbai, Mumbai 400 098, India Don Bosco Institute of Technology, Kurla (W), Mumbai 400 070, India
3 Department of Physics, University of Mumbai, Mumbai 400 098, India
4 Department of Chemistry, University of Tabuk, Tabuk 71491, Saudi Arabia
Abstract
In the present study, effect of CNT on optical and thermal properties of mixed thermotropic liquid crystal mixture was studied by various techniques to understand their physical behavior. Some new mesophases have investigated by optical methods viz. Polarizing Optical Microscopy (POM) and Fabry–Perot Scattering Studies (FPSS). It has been observed that these new phase transition occur along with the known phase transition temperatures. These new phase transitions corresponding to new mesophases were also confirmed by thermal study using Differential Thermal Analysis (DTA). The CNT doped thermotropic liquid mixtures can be used in various display application such as LCD monitor with color variation to enhance performance. Copyright © 2018 VBRI Press.
Keywords
1.J.P.F.Lagerwall,G.Scalia, Aneweraforliquidcrystalresearch:
Applicationsofliquidcrystalsinsoftmatter nano,bioand
microtechnology, Current Applied Physics12(6) (2012)1387-1412.
DOI:10.1016/j.cap.2012.03.019
2.H. Stark, Physics of colloidal dispersions in nematic liquid
crystals, Physics Reports 351 (2001)387–474.
DOI:10.1016/S0370-1573(00)00144-7
3.O.Trushkevych,F.Golden,M.Pivnenko,H.Xu,N.Collings,W.
A.Crossland,S.Muller,R.Jakoby,Dielectric anisotropy of
nematic liquid crystals loaded with carbon nanotubes in microwave
range,Electronics Letters 46(10) (2010)693–695.
DOI:10.1049/el.2010.0752
4.C.Y. Huang, C.Y. Hu, H.C. Pan, K.Y. Lo, Electrooptical responses
of carbon nanotube-dopedliquidcrystal devices, Japanese Journal
of Applied Physics 44 (2005)8077–8081.
DOI:10.1143/JJAP.45.6392
5.S.Y.Jeon,S.H.Shin,S.J.Jeong,S.H.Lee,S.H.Jeong,Y.H.
Lee,H.C.Choi,K.J.Kim,Effectsofcarbon nanotubes on electro-
optical characteristics of liquid crystal cell driven by in-plane field,
AppliedPhysics Letters 90(12) (2007)121901.
DOI:10.1063/1.2714311
6.W. Lee, H. Y. Chen, Y.C. Shih, Reduced dc offset and faster
dynamic response in acarbon-nanotube-impregnated liquid-crystal
display, Journal of the Society for Information Display 16(7),
(2008)733–741.
DOI:10.1889/1.2953480
7.P. Malik, A. Chaudhary, R. Mehra, K. K. Raina, Electro-optic,
thermo-optic and dielectric responsesofmultiwalled carbon
nanotube doped ferroelectric liquid crystal thin films, Journal of
Molecular Liquids165(2012)7–11.
DOI:10.1016/j.molliq.2011.09.016
8.R. Basu and G. S. Iannacchione, Carbon nanotube dispersed liquid
crystal: A nanoelectromechanicalsystem, Applied Physics Letters
93(18) (2008) 183105
DOI:10.1063/1.3005590
9.S.J.Jeong,K.A.Park,S.H.Jeong,H.J.Jeong,K.H.An, C.W.
Nah,D.Pribat,S.H.Lee,Y.H.S.Lee,Electroactive
superelongation of carbon nanotube aggregates in liquid crystal
medium, Nano Letters7(8)(2007)2178–2182.
DOI:10.1021/nl070116u
10.P. Sureshkumar, A. K. Srivastava, S. J. Jeong, M. Kim, E. M. Jo,
S. H. Lee, Y. H. Lee,AnomalousElectrokinetic Dispersion of
Carbon Nanotube Clusters in Liquid Crystal Under Electric Field,
JournalofNanoscience and Nanotechnology 9 (2009)4741-4
DOI:10.1166/jnn.2009.1202
11.Rita A. Gharde, Sangeeta Y. Thakare Optical Study of Liquid
Crystal Doped with MultiwalledCarbon NanotubeInternational
Journal of NanoscienceVol. 13, No. 4 (2014) 1440001
DOI: 10.1142/S0219581X14400018
12.Santosh A. Mani, Jessy P.J., Suman Lal,S. K. Tripathi,Samriti
Khosla, Rita A. Gharde, Pradip B. Sarawade “Effect ofCNT on
Liquid Crystal Elastomer” in IEEE Xplore
DOI:10.1109/INDICON.2015.7443387
13.Sharmistha Ghosh, Antiferroelectric liquid crystal/carbon nano
tube duo for achieving modified electro-optical properties;
aiming at display applications, Adv. Mater. Lett. 2016, 7(1), 60-64.
DOI:10.5185/amlett.2016.6049
(b) Book
14.Steve Elston and Roy Sambles, The Optics of thermotropic liquid
crystals, TAYLOR &FRANCIS (1998).
15.DietrichDemus-LotharRichter,TexturesinLiquidCrystals,
VerlagChemie,Weinheim, NewYork(1978)
16.S. Chandrasekhar, Liquid Crystals, Cambridge Uni. Press,
Cambridge, London, (1977)
17.N.H.Hartshone andA.Stuart, Crystals and Polarizing Microscope,
Edward Arnold Publishers Ltd.London(1970)
18.P.J.Collings and M.Hird, Introduction to Liquid Crystals
(Chemistry and Physics). Taylor and FrancisLtd.,London (1997)
)