Research

Publications in SCI/ International Journals/Patents

Patent Filed/granted:

1.

Granted Patent: Optical Memory Device Based On DHFLC Material and Method of Preparing the Same

Inventers: J. Prakash, A. Kumar, A. Choudhary, A. Malik, I. Coondoo, A. M. Biradar.

Place of filing: USA.

International Publication Number: US20120140127A1.

Date of publication: 2012-06-07.

International Publication Number: US8994911B2 .

Date of publication: 31/03/2015.

Place filing: World Intellectual Property Organization (WIPO), Patent Corporation Treaty (PCT);

Application Number: WO2010109316A1

Date of publication: 30/09/2010

Place of Filing: South Korea

Application Number: KR20120003000A

Date of Application: 2012-01-09

Date of Grant: 31/01/2017

Date of Publication: KR101700922B1

Place of filing: India

Application number: IN625/DEL/2009

Status: Under filing process.

https://patents.google.com/patent/US20120140127A1/en?q=(ferroelectric+liquid+crystal)&inventor=Biradar&before=priority:20191115&after=priority:19990101

Application US13/260,509 events

2009-03-27

Priority to IN625DE2009

2009-03-27

Priority to IN625/DEL/2009

2010-03-26

Application filed by Council of Scientific and Industrial Research CSIR

2010-03-26

Priority to PCT/IB2010/000683

2012-02-20

Assigned to COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

2012-06-07

Publication of US20120140127A1

2015-03-31

Publication of US8994911B2

2015-03-31

Application granted

Status

Active

2031-11-30

Adjusted expiration

2. Filed Patent: Fabrication of highly sensitive electro-optical device based on ferroelectric liquid crystal interfacial phenomenon

Inventors: Surinder Pal Singh (20%), Amit Choudhary (30%), Rajesh, Ambika Bawa, Lokesh Kumar Gangwar, Suraj Kumar, Ashok Manikrao Biradar (contribution of rest 10% each)

Filling application number: 2021-W1-061663

Filing date: 29th December 2021

Filing Country: India

List of publications in international/national journals (SCI):

Year 2022

  1. Hierarchical self-assembling and helical structure in focal conic domains in meniscus of ferroelectric liquid crystal

Amit Choudhary, Suraj Kumar, Ambika Bawa, Surinder P. Singh, Anil K. Thakur, Rajesh, and Ashok M. Biradar

Physical Review E 105, 044706 (2022).

https://doi.org/10.1103/PhysRevE.105.044706

  1. Technological Advancements in Bio‐recognition using Liquid Crystals: Techniques, Applications, and Performance

Rajesh, Lokesh K. Gangwar, Sujeet K. Mishra, Amit Choudhary, Ashok M. Biradar, Gajjala Sumana

Luminescence, In Production (2022).

DOI: https://doi.org/10.1002/bio.4242

https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/bio.4242


Year 2021


  1. Alignment layer and helix controlled unconventional operational switching in ferroelectric liquid crystal

Amit Choudhary, Ambika Bawa, Lokesh K Gangwar, Surinder P Singh, Ashok M.

Biradar and Rajesh,

Journal of Physics D: Applied Physics, 54, 505301 (2021).

  1. Resolving the isolated nature of Goldstone mode in ferroelectric liquid crystals at room temperature

Achu Chandran, Amit Choudhary*, Lokesh Kumar Gangwar, T.K. Abhilash,

B.S. Athira, and Ashok M. Biradar*.

Journal of Molecular Liquids, 340, 117194 (2021). I.F.: 6.16

https://doi.org/10.1016/j.molliq.2021.117194

Year 2020

  1. Weak anchoring resolved substrate interface and bulk mode processes in surface stabilized ferroelectric liquid crystal

S. Khan, J. Prakash, S. Chauhan, A. Choudhary*, and A.M. Biradar,

Journal of Molecuar Liquids 325, 114705 (2020).

https://doi.org/10.1016/j.molliq.2020.114705

ISSN: 1873-3166

  1. Correlation between alignment geometries and memory effect in surface
    stabilized ferroelectric liquid crystal

Kumar Suraj, Lokesh K. Gangwar, Ambika Bawa, Amit Choudhary,* Rajesh, S. P. Singh, and A. M. Biradar,

Phys. Rev. E 102, 032703 (2020).

https://journals.aps.org/pre/accepted/1b074R02G211f018f85a8e065641d76e029592627

ISSN: 24700045

  1. Surface constraints controlled structural dynamics of ferroelectric liquid crystals

Ambika Bawa, Amit Choudhary,* Gunjan Sharma, Rajesh, Surinder P. Singh, and Ashok M. Biradar,

Applied Surface Science, 526, 146743 (2020).

https://www.sciencedirect.com/science/article/abs/pii/S0169433220315002

ISSN: 169-4332

  1. Electric field dependence of optical dispersion process in short pitch ferroelectric liquid crystal

Amit Choudhary, Ambika Bawa, Anil K. Thakur, Lokesh K. Gangwar, Suraj Kumar, Surinder P. Singh, and Ashok M. Biradar

Optical Materials, 102, 109771 (2020).

https://www.sciencedirect.com/science/article/abs/pii/S0925346720301221

ISSN: 2195-1071

  1. Partially unwound helical mode in surface stabilized ferroelectric liquid crystal geometry

Sidra Khan, Jai Prakash, Shikha Chauhan, Amit Choudhary, and Ashok M. Biradar,

Journal of Molecular Liquids, 305, 112767 (2020).

https://www.sciencedirect.com/science/article/abs/pii/S0167732219361896

  1. Bismuth ferrite nanoparticles for modulation of helical structure at the interface of ferroelectric liquid crystal and substrate

Sidra Khan, Jai Prakash, Shikha Chauhan, Amit Choudhary, and Ashok M. Biradar

J. Appl. Phys. 127, 074102 (2020).

https://aip.scitation.org/doi/10.1063/1.5128557

ISSN: 1089-7550

  1. Impact of twisted alignment on the smectic layer structure of ferroelectric liquid crystal

Ambika Bawa, Tarundeep K. Lamba, Amit Choudhary,* Gautam Singh, Rajesh, Surinder P.Singh, Ashok M. Biradar

Journal of Molecular Liquids, 302, 112332 (2020).

https://doi.org/10.1016/j.molliq.2019.112332

https://www.sciencedirect.com/science/article/abs/pii/S016773221933942X

ISSN: 1873-3166

  1. Low frequency dielectric processes in deformed helix ferroelectric liquid crystals

Ambika Bawa, Amit Choudhary*,Anil K. Thakur, Suraj Kumar, Rajesh, Surinder P. Singh, and Ashok M. Biradar

Applied Physics A, 126, 171 (2020).

https://doi.org/10.1007/s00339-020-3340-z

https://link.springer.com/article/10.1007/s00339-020-3340-z#citeas

ISSN: 1432-0630


Year 2019

  1. Ferroelectric ordering at interface of paraelectric phase of liquid crystal and solid substrate in confined geometry

S. Kumar, L.K. Gangwar, A. Choudhary*, Rajesh, S.P. Singh, and A.M. Biradar

Applied Surface Science 496, 143695 (2019). I.F.-5.1

ISSN: 0169-4332

  1. Polarisation-dependent dielectric processes in ferroelectric liquid crystals

Ambika Bawa, Astha Dhingra, Amit Choudhary*, Surinder P. Singh, Wolfgang W. Haase, and Ashok M. Biradar

Liq. Cryst. 46(2), 166-175 (2019).

ISSN: 0267-8292

  1. Probing the impact of carbon quantum dots on partially unwound helical mode in ferroelectric liquid crystals

Lokesh K. Gangwar, Aditya Kumar, Gautam Singh, Amit Choudhary,* Rajesh, Surinder P. Singh, and Ashok M. Biradar,

J. Appl. Phys. 125, 125108 (2019). I.F.-2.366


Year 2018

  1. [Review Article] Conjugation of Nanomaterials and Nematic Liquid Crystals for Futuristic Applications and Biosensors

Amit Choudhary, Thomas F. George, and Guoqiang Li

Biosensors, 8, 69; doi:10.3390/bios8030069 (2018). I.F. 3.5

ISSN: 2079-6374

  1. Collective dielectric process at the transition temperature of the SmC* and SmA* phase in a ferroelectric liquid crystal

L.K. Gangwar, A. Bawa, A. Choudhary*, S. P. Singh, and A. M. Biradar

Phys. Rev. E, 97, 062707 (2018) I.F.-2.366

ISSN: 2470-0053


Year 2017

  1. Dielectric behaviour of neutrophil gelatinase associated lipocalin detected by alpha relaxation process

Mukta Tyagi, , Amit Choudhary, Santosh K. Upadhyay, Ved Varun and A. M. Biradar Integrated Ferroelectrics, 184, 55 (2017). IF-0.457,

ISSN: 1607-8489

Issue 1: The International Conference on Technologically Advanced Materials (ICTAM-2016), Part I

  1. Dielectric relaxation process of partially unwound helical structure in ferroelectric liquid crystals,

Amit Choudhary, A. Bawa, Rajesh, S. P. Singh and A. M. Biradar,

Phys Rev. E 95, 062702 (2017). IF-‎2.366

ISSN: 2470-0053

  1. Dielectric and electro-optical properties of Mn12-acetate and ferroelectric liquid crystal composite,

Shilpi Verma, Amit Choudhary*, Priti Singh, Ashok M. Biradar, and Surinder P. Singh,

Liquid Crystals, Vol 44, 464-472 (2017). IF- 2.661

ISSN: 1366-5855


Year 2015

  1. Probing the dynamics of geometrically confined ferroelectric mesogens at the air interface

Achu Chandran, Amit Choudhary,* Pankaj Singh, D. Haranath, and Ashok M. Biradar.

Soft Matter, 11, 749 (2015). IF- 3.798

ISSN: 1744-6848

  1. Ananlysis of nanoparticles induced vertical alignment of nematic liquid crystals

A. Choudhary, Thomas F. George, and G. Li, arXiv:1510.08166 [physics,optics], (2015).


  1. Investigations on the triboelectric electricity generation and its application in energizing a voltage driven display device

A. Kumar, A. Choudhary, A. Saxena, A. P. S. Gahlot, G. Berwal, Rohit, S. Kumar, S. J. Tiwari, D. P. Singh, D. Agrawal, V. Kumar and V. Upreti.

DU Journal of Undergraduate Research and Innovation 1 (1) (2015) 49-59 ISSN 2395 - 2334.

Year 2014

  1. Anisotropic shift of surface plasmon resonance of gold nanoparticles doped in nematic liquid crystal,

Amit Choudhary and Guoqiang Li.

Optics Express, 22, 24348 (2014). IF- 3.337

ISSN: 1094-4087

  1. [Review article] Advances in gold nanoparticles-liquid crystal composites

A. Choudhary, Gautam Singh, and A. M. Biradar

Nanoscale 6, 7743 (2014). IF- 7.233

ISSN: 2040-3372


Year 2013

  1. Mechanism of homeotropic alignment of ferroelectric liquid crystals doped with ferro-fluid and applications

T. Joshi, Shri Singh, A. Choudhary*, R. P. Pant, and A. M. Biradar

Appl. Phys. Lett. 103 034110 (2013). IF-3.495


  1. Gold-Nanoparticle-Decorated Boron Nitride Nanosheets: Structure and Optical Properties

Sunil K. Singhal , Veeresh Kumar , K. Stalin , Amit Choudhary, Satish Teotia , Gade B. Reddy , Rakesh B. Mathur , Surinder P. Singh, and Renu Pasricha

Part. Part. Syst. Charact. 30, 445 (2013). IF-4.384

ISSN: 1521-4117


Year 2012

  1. Electro-optic studies in conventional and pure/ethanol mixed de Vries ferroelectric liquid crystals

G. Singh, G. V. Prakash, A. Choudhary, and A. M. Biradar

Liq. Cryst., 39, 185 (2012). IF-3.07

ISSN: 0267-8292


Year 2011

  1. Effect of ZnO nanoparticles on smectic-C* smectic-A*  phase transition in electroclinic liquid crystals
    A. Malik,     A. Choudhary, and A. M. Biradar

J. Appl. Phys. 110, 064111 (2011). IF-2.3



Year 2010

  1. Effect of Graphene Oxide nanomaterial in Electroclinic Liquid Crystals

A. Malik, A. Choudhary, A. M. Biradar, V.K. Singh, and N. K. Jain

J. Appl. Phys. 108, 124110 ( 2010). IF-2.3


  1. Triboelectric activation of ferroelectric liquid crystal memory devices

A. Choudhary, T. Joshi, and A. M. Biradar,

Appl. Phys. Lett., 97, 124108 (2010).IF 3.5

ISSN: 1077-3118

  1. Field-induced transition from homeotropic to planar geometry in the Sm C* and SmA phase of electroclinic liquid crystal.

Anu Malik, Indrani Coondoo, Amit Choudhary and Ashok M. Biradar

Philosophical magazine 90, 2733-2747 (2010), I.F:-1.95

ISSN: 1478-6435

  1. Anisotropic behaviour of water in Ferroelectric liquid crystal.

G. Singh, A Choudhary, G. V. Prakash, and A. M. Biradar

Phys. Rev. E 81, 051707 (2010). IF-2.36

ISSN: 2470-0053

  1. Homeotropic alignment of nematic liquid crystals with negative dielectric anisotropy

Gautam Singh, Gaddam Vijaya Prakash, Amit Choudhary, and Ashok Manikrao Biradar.

Physica B 405, 2118 (2010). I.F:-1.45


Year 2009

  1. Effect of Surface Anchoring on Optical Bistability in Deformed Helix Ferroelectric Liquid Crystal

J. Prakash, A. Choudhary, D. S. Mehta, and A. M. Biradar

Mol. Cryst. Liq. Cryst. 511, 188 (2009). I.F. 0.896

ISSN: 1542-1406

  1. Dielectric and electro-optical studies of glycerol/ferroelectric liquid crystal mixture at room temperature

A. Kumar, J. Prakash, A. Choudhary, and A. M. Biradar.

J. Appl. Phys. 105, 124101 (2009). IF.2.17

  1. Effect of carbon nanotubes on response time of ferroelectric liquid crystal

J. Prakash, A. Choudhary, D. S. Mehta, and A. M. Biradar

Phys. Rev E, 80, 012701 (2009). IF-2.366

ISSN: 2470-0045

  1. Electrically tunable spatially variable switching in ferroelectric liquid crystal/water system

A. Choudhary, I. Coondoo, Jai Prakash, K. Sreenivas, and A. M. Biradar

Appl. Phys. Lett. 94, 174101 (2009). IF-3.5

  1. Enormous change in tilt angle and transition temperature of Sm C*- Sm A phase in electroclinic liquid crystal material.

A. Choudhary, A. Kumar, S. Kaur, J. Prakash and A. M. Biradar

Jpn J. Appl. Phys. 48, 050201, 2009. IF-1.3

  1. Enhancement of Ferro to paraelectric phase transition in Ferroelectric Liquid Crystal

A Malik, A. Choudhary, J. Prakash, I. Coondoo, and A. M. Biradar.

J. Appl. Phys. 105, 034105 (2009). IF-2.3


Year 2008

  1. Memory effect near transition temperature in Sm C phase in non-surface stabilized ferroelectric liquid crystals

I. Coondoo, A. Malik, A. Choudhary, A. Kumar, and A. M. Biradar

J. Appl Phys 104, 83525, (2008). IF-2.17

ISSN: 1089-7550

  1. Nonvolatile memory effect based on gold nanoparticles doped ferroelectric liquid crystal.

J. Prakash, A. Choudhary, A. Kumar, D. S. Mehta, and A. M. Biradar.

Appl. Phys. Lett. 93, 112904 (2008). IF-3.5

  1. Memory effect in weakly anchored surfaces of deformed helix ferroelectric liquid crystals

J. Prakash, A. Choudhary, S. Kaur, D. S. Mehta, and A. M. Biradar

Phys. Rev. E, 78, 021707 (2008)

  1. Effect of Smectic A temperature width on the soft mode in Ferroelectric Liquid Crystals

A. Choudhary, S. Kaur, J. Prakash, K. Sreenivas, S. S. Bawa, and A. M. Biradar

J Appl. Phys 104, 034105 (2008).

  1. Criticality of bistabiltiy phenomenon in Deformed Helix Ferroelectric Liquid Crystal

J. Prakash, D. S. Mehta, A. Choudhary, S. Kaur, V. Rathore, and A. M. Biradar

J Appl. Phys, 103, 44103 (2008).

  1. Molecular relaxation in homeotropically aligned ferroelectric liquid crystals

G. Singh, G. V. Prakash, S. Kaur, A. Choudhary, and A. M. Biradar

Physica B, 403, 3314 (2008).

ISSN: 0921-4526


Year 2007

  1. Enhanced electro-optical properties in gold nanoparticles doped FLC

S. Kaur, S. P. Singh, A. M. Biradar, A. Choudhary, and K. Sreenivas

Appl Phys. Lett. 91, 023120 (2007).

  1. Reminiscence shown by de Vries Electroclinic liquid crystal.

G. Singh, A. Choudhary, S. Kaur, A. M. Biradar, and W. Haase

Jpn J Appl. Phys. 46, L559 (2007).

ISSN: 1347-4065

  1. Memory effect in Sm C* phase of electroclinic liquid crystal

A. Choudhary, S. Kaur, G. Singh, J. Prakash, A. K. Thakur, and A. M. Biradar

J Appl. Phys 101, 074112 (2007).

ISSN: 1089-7550


Year 2006

  1. A dielectric mode in electroclinic liquid crystals

A. K. Thakur, A. Choudhary, S. Kaur, S. S. Bawa, and A. M. Biradar

J Appl. Phys. 100, 034104 (2006).

ISSN: 1089-7550

  1. Is Curie-Weiss Law valid in every ferro to para transition?

S. Kaur, A. K. Thakur, A. Choudhary, S. S. Bawa and A. M. Biradar, S. Annapoorni

Appl. Phys. Lett, 87, 102507, (2005).

ISSN: 1077- 3118

Note: * Corresponding Author