Lab Logo Prof. Aloka Sinha

Publications

For the latest publications, visit Aloka Sinha-Google Scholar.

Journal Papers

Sr. No. Paper
98 Aysha Rani, Dhananjoy Mandal, Susanta Chakraborty, and Aloka Sinha. "Effect of external magnetic field on phase transitional behavior of pure and multiferroic nanoparticles dispersed thermotropic liquid crystal.", Journal of Molecular Liquids, 129108, 2025.
97 Kaustav Jit Bora, Supreet Kaur, and Aloka Sinha. "Improved piezoelectric and conductive properties of bent-core liquid crystal-polymer composites for sustainable energy harvesting.", Advanced Composites and Hybrid Materials, 8(5), 358, 2025.
96 Debasish Bag, and Aloka Sinha. "Liquid crystal-based highly sensitive temperature sensor using the optical Vernier effect with monochromatic light.", Optics Letters, 50(14), 4546-4549, 2025.
95 Dhananjoy Mandal, Yiwei Wang, Supreet Kaur, Golam Mohiuddin, Apala Majumdar, and Aloka Sinha. "Dispersion of multiferroic nanoparticles in a bent-core nematic liquid crystal: experimental and theoretical study.", Journal of Molecular Liquids, 127624, 2025.
94 Deepak Kararwal, Rahul Panchal, and Aloka Sinha. "A continuous plane of polarization rotator and detector based on the liquid crystal Θ-cell.", Optics & Laser Technology, 182, 112138, 2025.
93 Vaibhav Sharma, and Aloka Sinha. "Liquid Crystal Purity Detection Using Surface Plasmon Resonance Phenomena.", Plasmonics, 20(2), 639-655, 2025.
92 Vaibhav Sharma, Rakesh Suthar, Supravat Karak, and Aloka Sinha. "Achieving High Efficiency in Luminescent Solar Concentrators Using Polymer Stabilized Cholesteric Liquid Crystal.", ACS Applied Optical Materials, 3(2), 259-271, 2025.
91 Shilpi Bose, Aloka Sinha, and Santanu Ghosh. "In Situ Growth of Copper Channels within CuCl and PVDF Composite for Durable WORM Device Formation.", ACS Applied Electronic Materials, 7(2), 847-855, 2025.
90 Deepak Verma, and Aloka Sinha. "Conjugated polymer dotsstabilized blue phase liquid crystal for improved electro-optic and photoluminescence properties.", Journal of Materials Chemistry C, 13(32), 16541-16550, 2025.
89 Rishikesh Kushawaha, Sagar Jawla, V. Haridas, and Aloka Sinha. "Dielectric and light-scattering features of a pseudopeptide-polymer-integrated nematic liquid crystal with negative dielectric anisotropy.", ACS Applied Optical Materials, 3(1), 112-124, 2024.
88 Rahul Panchal, and Aloka Sinha. "Electrically controlled flexible and varifocal microlens array using liquid crystals on polymer.", Journal of Physics D: Applied Physics, 58(9), 095303, 2024.
87 Deepak Verma, Govind P. Maurya, Sagar Jawla, V. Haridas, and Aloka Sinha. "Designing Luminescent Liquid Crystals Using an AIE-Active Pseudopeptide Chiral Dopant: Circular Dichroism, Circularly Polarized Luminescence, and Photoluminescence Studies.", ACS Applied Optical Materials, 2(11), 2286-2293, 2024.
86 Kaustav Jit Bora, and Aloka Sinha, “Synergetic improvement of flexoelectric coefficient in liquid crystal embedded PVDF polymer composite for energy harvesting applications”, Macromol. Rapid Commun., 45, 2400148, 2024.
85 Aysha Rani, and Aloka Sinha, “Enhanced dielectric, electrical and electrooptical properties: Towards understanding the interaction in mesophases of 8OCB liquid crystal dispersed with CdSe/ZnS quantum dots”, J. Mol. Liq. ,398, 124201, 2024.
84 Debasish Bag, Susanta Chakraborty, and Aloka Sinha, “Nanoscale surface metrology with liquid crystal-based phase shifting angular shearing interferometer”, Opt. Let., 49, 1705, 2024.
83 Susanta Chakraborty and Aloka Sinha, “Extended centroid position method in liquid-crystal-based interrogation system for electric-field-modulated Fabry-Perot sensing”, Meas. Sci. Technol., 35, 025134, 2023.
82 Rishikesh Kushawaha, and Aloka Sinha, “Suppression of laser speckle contrast using negative dielectric anisotropy nematic liquid crystal doped with an ionic medium”, Liq. Cryst., 2023, DOI: https://doi.org/10.1080/026 78292.2023.2 275292.
81 Rahul Panchal, and Aloka Sinha, “Polymer Film Integrated Optical Fiber-Cantilever-Based Highly Sensitive Low-Frequency Acoustic Sensor”, IEEE Sens. J., 23, 27146-53, 2023.
80 Shilpi Bose, Aloka Sinha, Sandeep Munjal, and Santanu Ghosh, “Inclusion of CoFe2O4 ultrafine nanoparticles in 7CB liquid crystal: effects on temperature-dependent magnetic properties and insights for expanding the application of LC systems in hyperthermia treatments”, Liq. Cryst., 2023, 51(1), 105-110, 2023.
79 Aysha Rani, Susanta Chakraborty, and Aloka Sinha, “Phase transitional behavior via interaction of CdSe/ZnS quantum dots dispersed in 8OCB liquid crystal”, Phys. Rev. E, 108, 034701, 2023.
78 Deepak Verma, Vidhika Punjani, Golam Mohiuddin, and Aloka Sinha, “Effect of doping ferroelectric BaTiO3 nanoparticles on dielectric, electro-optical, and ionic properties of antiferroelectric bentcore liquid crystal”, J. Mol. Liq., 43, 122241, 2023.
77 Vaibhav Sharma, and Aloka Sinha, “Electrically controlled dual-mode polarization beam splitter using a nematic liquid crystal”, Opt. Lett., 48, 2357-60, 2023.
76 Rahul Panchal, and Aloka Sinha, “Non-mechanical multidirectional optical beam steering using fringing fields in liquid crystals”, J. Opt. Soc. Amer. B, 48, 1189-91, 2023.
75 Vaibhav Sharma and Aloka Sinha, “Low threshold electrooptic switch and TE/TM polarization selector using liquid crystal channel waveguide” Opt. Laser Technol., 159, 108987, 2023.
74 Asha Kumari, Abhishek Ghosh, Bodh Raj Mehta, and Aloka Sinha, “Synergetic Enhancement of Seebeck Coefficients and Electrical Conductivity in Flexible Liquid Crystal Composites, ACS Sust. Chem. Eng., 11, 4226-36, 2023.
73 Supreet Kaur, Golam Mohiuddin, Jun Zhang, Susanta Chakraborty, Xiaoyu Ding, Deepak Verma, Aloka Sinha, Ying Xiang, Santanu Kumar Pal, “Polar response and Fréedericksz transition in cybotactic nematic fluids of unsymmetrical bent-core molecules”, J. Mol. Liq., 387, 122626, 2023.
72 Rahul Panchal, and Aloka Sinha, “Electrically controlled continuous laser beam steering in a liquid crystal based electro-optic waveguide”, Opt. Laser Technol., 158, 108816, 2023.
71 Susanta Chakraborty, Rahul Panchal, and Aloka Sinha, “Liquid Crystal Based Polarized Low Coherence Interferometer for Optical Demodulation in Sensors”, Appl. Opt., 62, 627-34, 2023.
70 Dhananjoy Mandal, Yiwei Wang, Supreet Kaur, Golam, Mohiuddin, Apala Majumdar, and Aloka Sinha, “Dispersion of Multiferroic Nanoparticles in a Bent- Core Nematic Liquid Crystal: Experimental and Theoretical Study”, 2023, arXiv preprint arXiv:2306.14623.
69 Shilpi Bose, Aloka Sinha, Sandeep Munjal, Yogesh Kumar, and Santanu Ghosh, “Magnetic field induced Fréedericksz transition in a system of ultrafine spherical CoFe2O4 nanoparticles doped 7CB media”, J. Mol. Liq., 368, 120688, 2022.
68 Sourav Patranabish, Sameer Dhawan,V. Haridas, and Aloka Sinha, “Designer Peptide-PVDF Composite Films for High-Performance Energy Harvesting”, Macromol. Rapid Commun.,43, 2200493, 2022.
67 Govind P Maurya, Deepak Verma, Aloka Sinha, Luc Brunsveld, and V. Haridas, “Hydrophobicity directed chiral self‐assembly, and aggregation induced emission: Diacetylene‐cored pseudopeptide chiral dopants”, Angew. Chem. Int. Ed., 61, e202209806, 2022.
66 Sourav Patranabish, Aloka Sinha, Madhu B. Kanakala, and Channabasaveshwar V. Yelamaggad, “Nematic twist-bend phase of a bent liquid crystal dimer: field-induced deformations of the helical structure and macroscopic polarization”, J. Condens. Matter Phys., 34, 465101, 2022.
65 Asha Kumari, Sameer Dhawan, Hanuman Singh, V. Haridas and Aloka Sinha, “Pseudopeptidi c Polymers for Modulating Electro-Optic Switching, Dielectric and Electrical Properties of Liquid Crystal”, J. Mol. Liq., 359, 119280, 2022.
64 Vaibhav Sharma, Aloka Sinha and M R Shenoy, “Mode-Size converter based on periodically segmented liquid crystal core waveguide”, J. Light. Technol., DOI: 10.1109/JLT.2022.3168573.
63 Asha Kumari, Sameer Dhawan, Hanuman Singh, V. Haridas, and Aloka Sinha, “Pseudopeptidic Polymers for Modulating Electro-Optic Switching, Dielectric, and Electrical Properties of Liquid Crystal, J. Mol. Liq., 119280, ISSN 0167-7322, 2022.
62 Susanta Chakraborty, Rahul Panchal and Aloka Sinha, “Determination of Refractive Indices for Liquid Crystals Using Double Transmission Technique” App. Opt., 61, 3804-3810, 2022.
61 Rishikesh Kushawaha and Aloka Sinha, “A facile fabrication of ultrahigh haze optical diffuser using nematic liquid crystal encapsulated by cellulose acetate biopolymer”, J. Phys. D: Appl. Phys., 55, 285303, 2022.
60 Rahul Panchal, Aloka Sinha, “Low threshold optical attenuator based on electrically tunable liquid crystal cladding waveguide”, Opt. Commun., 513, 128089, 2022.
59 Asha Kumari, Sameer Dhawan, Hanuman Singh, V. Haridas and Aloka Sinha, “Pseudopeptidic Polymer Microsphere-Filled Liquid Crystals as High-Performance Light-Scattering Switches”, ACS Appl. Polym. Mater., 4(1), 64-73, 2021.
58 Aysha Rani, Susanta Chakraborty, and Aloka Sinha, “Effect of CdSe/ZnS quantum dots doping on the ion transport behavior in nematic liquid crystal”, J. Mol. Liq., 342, 117327, 2021.
57 Pradeep Kumar, Somen Debnath, Nandiraju V.S. Rao, Aloka Sinha, “Pristine and ferroelectric liquid crystal dispersed four ring bent core nematic: Impact of dispersion on electro-optic and dielectric properties”, J. Mol. Liq., 333, 115955, 2021.
56 Sourav Patranabish, Yiwei Wang, Aloka Sinha, and Apala Majumdar, “Quantum-dots dispersed bent-core nematic liquid crystal and cybotactic clusters: Experimental and theoretical insights”, Phys. Rev. E., 103, 052703, 2021.
55 Asha Kumari and Aloka Sinha, "Role of BaTiO3 nanoparticles on the electro-optic performance of epoxy-resin-based PDLC devices" Liq. Cryst., 48(1), 23-34, 2020.
54 Nirmala Saini, Aloka Sinha, “Efficient fusion of face and palmprint in Gabor filtered Wigner domain”, Int. J. Bi Com., 12(3), 301-316, 2020.
53 Sourav Patranabish, Yiwei Wang, Aloka Sinha, and Apala Majumdar, "One-dimensional theoretical analysis of coupling and confinement effects on the cybotactic clusters of bent-core nematic liquid crystals", Phys. Rev. E., 99, 012703, 2019.
52 Amina Nafees, Gayatri Kalita and Aloka Sinha, “Effect of titanium dioxide nanoparticles on the dielectric and electro-optical properties of bent-core liquid crystals”, J. Mol. Liq., 274, 592–597, 2019.
51 Gaurav Verma, Meihua Liao, Dajiang Lu, Wenqi He, Xiang Peng and Aloka Sinha,“An optical asymmetric encryption scheme with biometric keys”, Opt. Lasers Eng., 116, 32-40, 2019
50 Amina Nafees, Gayatri Kalita and Aloka Sinha, “Effect of titanium dioxide nanoparticles on the dielectric and electro-optical properties of bent-core liquid crystals”, J. Mol. Liq., 274, 592–597, 2019, 2018.
49 Pradeep Kumar and Aloka Sinha, “Nanodoping: a route of enhancing electrooptic performance of bent core systems”, J. Phys. Condensed Matt., 30, 095101, 2018.
48 Sourav Patranabish, Golam Mohiuddin, Nazma Begum, Atiqur R. Laskar, Santanu K. Pal, Nandiraju V. S. Rao and Aloka Sinha, “Cybotactic Nematic Phase of Achiral Unsymmetrical Bent-Core Liquid Crystals – Quelling of Polar Ordering and the Influence of Terminal Substituent Moiety”, J. Mol. Liq., 257, 144-154, 2018.
47 Pradeep Kumar, Aloka Sinha, “Electro-optical properties of carbon nanotubes doped ferroelectric liquid crystal,” Integr. Ferroelectr., 186, 71-76, 2018.
46 Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “Periodically-segmented liquid crystal core waveguides,” J. Phys. D: Appl. Phys., 50, 385107, 2017.
45 Gaurav Verma, Aloka Sinha, “Optical image encryption system using nonlinear approach based on biometric authentication,” J. Mod. Opt., 64 (13), 1–9, 2017.
44 Amina Nafees, Aloka Sinha, and Nandiraju V. S. Rao, “Cybotactic clusters seen in the nematic phase of four-ring achiral bent-core liquid crystal by dielectric spectroscopy,” Integr. Ferroelectr., 185, 61-64, 2017.
43 Pradeep Kumar, Avinash Kishore and Aloka Sinha, “Analog switching in the nanocolloids of ferroelectric liquid crystals,” Appl. Phys. Lett., 108 (26), 262903, 2016.
42 Aloka Sinha, “Nonlinear optical cryptosystem resistant to standard and hybrid attacks”, Opt. Lasers Eng., 81, 79–86, 2016.
41 Gaurav Verma and Aloka Sinha, “Securing information using optically generated biometric keys,” J. Opt., 18, 11, 2016.
40 Amina Nafees, Aloka Sinha, Nandiraju V. S. Rao, Gayatri Kalita, Golam Mohiuddin and Manoj Kumar Paul, “Design, synthesis and mesomorphic behaviour of a four-ring achiral bent-core liquid crystal in the nematic phase”, RSC Adv., 6(49), 43069-43079, 2016.
39 Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “A low-loss optical switch using liquid crystal core waveguide with polymer cladding,” J. Lightwave Technol., 34(13), 3065–3070. 2016.
38 Gaurav Verma and Aloka Sinha, “Digital holographic-based cancellable biometric for personal authentication,” J. Opt., 18, 5, 2016.
37 Pradeep Kumar, Avinash Kishore and Aloka Sinha, “Effect of different concentrations of dopant titanium dioxide nanoparticles on electro-optic and dielectric properties of ferroelectric liquid crystal mixture”, Adv. Mater. Lett., 7(2), 104-110, 2016.
36 Mukesh Sharma, Aloka Sinha and M. R. Shenoy, “Effect of TiO2 nanoparticle doping on the performance of electrically-controlled nematic liquid crystal core waveguide switch,” Opt. Mater. Express, 49, 292–296, 2015.
35 Pradeep Kumar, Aloka Sinha, “Effect of barium titanate nanoparticles of different particle sizes on electro-optic and dielectric properties of ferroelectric liquid crystal,” Phase Transit., 88, 605-620, 2015.
34 Amina Nafees, Gayatri Kalita, Manoj Kumar Paul, Aloka Sinha, and Nandiraju VS Rao. "Effect of methoxy group instead of polar group in the nematic phase of four-ring bent-core liquid crystals." RSC Adv., 5(9), 7001-7006, 2015.
33 Nirmala Saini and Aloka Sinha, “Video encryption using chaotic masks in joint transform correlator” J. Opt., 17(3), 035701, 2015.
32 M. R. Shenoy, Mukesh Sharma, Aloka Sinha, “An Electrically-Controlled Nematic Liquid Crystal Core Waveguide with a Low Switching Threshold,” IEEE J. Lightwave Technol., 33, 10, 2015.
31 Nirmala Saini and Aloka Sinha, “Face and palmprint multimodal biometric systems using Gabor– Wigner transform as feature extraction”, Pattern Anal. Appl., 2014, 10.1007/s10044-014-0414-6.
30 Gaurav Verma and Aloka Sinha, “Finger knuckle print based verification using minimum average correlation energy filter”, Int. J. Electron. Commer., 5(2), 233-246, 2014.
29 Narendra Singh and Aloka Sinha, “Chaos based secure communication scheme using voltagecontrolled oscillator and logistic map”, Aust. J. Basic and Appl. Sci., 8(4), 763-767, 2014.
28 Nirmala Saini and Aloka Sinha, “Biometrics based key management of double random phase encoding scheme using error control codes”, Opt. Lasers Eng., 51(8), 1014–1022, 2013.
27 Suman Kalyan Manna and Aloka Sinha, “Development of a Phenomenological Model on Surface Stabilized Ferroelectric Liquid Crystal Nanocomposite”, IOSR J. Comput. Eng., 1(2), pp. 33-38. 2012.
26 Nirmala Saini and Aloka Sinha, “Soft biometrics in conjunction with optics-based biohashing”, Opt. Commun., 284(3), 756-763. 2011.
25 Nirmala Saini and Aloka Sinha, “Optics based Biohashing using joint transform correlator”, Opt. Commun., 283(6), 894-902, 2010.
24 Nirmala Saini and Aloka Sinha, “Optics based Biometric encryption using log polar transform”, Opt. Commun., 283(1), 34-43, 2010.
23 Nirmala Saini and Aloka Sinha, “Key management of the double random phase encoding method using public key encryption”, Opt. Lasers Eng., 48(3), 329-334, 2010.
22 Narendra Singh and Aloka Sinha, “Chaos based secure communication system using logistic map”, Opt. Lasers Eng., 48(3), 398-404, 2010.
21 Narendra Singh and Aloka Sinha, “Chaos based multiple image encryption using multiple canonical transforms”, Opt. Laser Technol., 42(5), 724-731, 2010.
20 Narendra Singh and Aloka Sinha, “Optical image encryption using improper Hartley transforms and chaos”, Optik (Stuttg.), 121(10), 918-925, 2010.
19 Narendra Singh and Aloka Sinha, “Digital image watermarking using gyrator transform and chaotic maps”, Optik (Stuttg.), 121(15), 1427-1437, 2010.
18 Narendra Singh and Aloka Sinha, “Optical image encryption using Hartley transform and logistic map”, Opt. Commun., 282(6), 1104-1109, 2009.
17 Narendra Singh and Aloka Sinha, “Gyrator transform-based optical image encryption using chaos”, Opt. Lasers Eng., 47(5), 539-546, 2009.
16 Narendra Singh and Aloka Sinha, “Optical image encryption using fractional Fourier transform and chaos”, Opt. Lasers Eng., 46(2), 117-123, 2008.
15 Aloka Sinha,“Fractional Fourier Transform based key exchange for asymmetric key cryptography, IEEE Trans. Comput., 7(2), 52-56, 2008.
14 Aloka Sinha and Kehar Singh “The design of a composite wavelet matched filter for face recognition using breeder genetic algorithm’’, Opt. Lasers Eng., 43, 1277-1291, 2005.
13 Aloka Sinha and Kehar Singh, “Image Encryption using fractional Fourier Transform and jigsaw Transform in Image bit-planes” Opt. Eng., 44, 057001, 2005.
12 Aloka Sinha and Kehar Singh, “Design of a composite wavelet matched filter using breeder generic algorithm”. Opt. Rev., 10, 251-254, 2003.
11 Aloka Sinha and Kehar Singh, “A technique for image encryption using digital signature”, Opt. Commun., 218, 229-234, 2003.
10 Aloka Sinha, W. Haase and Roman Dabrowski, “Electrooptic studies in multicomponent mixtures”, Ferroelectrics, 282, 229-238, 2003.
9 L. M. Blinov, E. P. Pozhidayev, F. V. Podgornov, Aloka Sinha, W. Haase, “Hysteresis Inversion Frequency for V-shape Electrooptical Switching Controlled by Dynamic Impedance of Ferroelectric SMC* Phase”, Ferroelectrics, 277, 3-11, 2002.
8 L. M. Blinov, E. P. Pozhidaev, F. V. Podgornov, S. A. Pikin, Aloka Sinha, A. Yasuda, S. Hashimoto and W. Haase “‘Thresholdless’ Hysteresis-free Switching as an Apparent, Phenomenon in Surface Stabilized Ferroelectric Liquid Crystal cells”, Phys. Rev. E, 66, 021701-1-10, 2002.
7 Aloka Sinha, T.A. Prasada Rao and Roman Dabrowski, “First order hyperpolarizability of an antiferroelectric liquid crystal”, Nonlinear Optics, 28(1-2), 85-93, 2001.
6 Aloka Sinha, T.A. Prasada Rao and Roman Dabrowski, “Electro-optic Kerr effect investigations in a new homologous series of liquid crystals”, Mol. Cryst. Liq. Cryst., 363, 1-15, 2001.
5 Aloka Sinha, T.A. Prasada Rao and Roman Dabrowski, “The third order nonlinear optical properties of liquid crystals”, Nonlinear optics, 26(4), 325-335, 2001.
4 Aloka Sinha, T. A. Prasada Rao, V. R. K. Murthy, Roman Dabrowski, “Kerr effect investigations in a liquid crystal”, Liq. Cryst., 27(2), 191-194, 2000.
3 N. SriVidya, Aloka Sinha and T. A. Prasada Rao, “Solvent effects on the absorption and Emission spectra of some Nematic Liquid Crystals: Determination of Dipole moment and First order hyperpolarizability”, J. Solut. Chem., 29(9), 847-857, 2000.
2 Aloka Sinha, T.A. Prasada Rao, and Roman Dabrowski, “Transient electro optic Kerr effect in liquid crystalline isothiocyanate”, J. Phys. Soc. Jpn., 68(6), 143-146, 1999.
1 Aloka Sinha, T.A. Prasada Rao, V.R.K. Murthy and Roman Dabrowski, “Kerr effect investigations in a liquid crystalline isothiocyanate”, Indian J. Pure Appl. Phys., 36, 593-597, 1998.

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Conference Papers

Sr. No. Paper
97 Kaustav Jit Bora, Aloka Sinha, “Designing All Organic Piezoelectric Energy Harvester Using Advanced Bent-Core Liquid Crystal Infused Polymer Composites for Human Motion Detection Applications”, International Conference on Renewable & Sustainable Energy Sources: The Science and Technology for Clean & Green Future (RSES2025), 10th-12th February, 2025, Birla Institute of Technology & Science, Pilani, India.
96 Aloka Sinha, “Design and Development of Liquid Crystal-based Tunable Photonic Devices for Advanced Optical and Interferometric Applications”, Soft Matter Meet 2024 (SMM-2024), 14th-16th October, 2024, Shiv Nadar Institution of Eminence Delhi NCR, India.
95 Kaustav Jit Bora, Aloka Sinha, “Leveraging Liquid Crystals for Organic Energy Harvesting: An Avenue towards Sustainable and Energy Efficient Devices”, Soft Matter Meet 2024 (SMM-2024), 14th-16th October, 2024, Shiv Nadar Institution of Eminence Delhi NCR, India.
94 Rishikesh Kushawaha, Aloka Sinha,“Optical Diffusers using Liquid Crystal and Polymer Composites”, Soft Matter Meet 2024 (SMM-2024), 14th-16th October, 2024, Shiv Nadar Institution of Eminence Delhi NCR, India.
93 Aloka Sinha and Rahul Panchal, “Electrically controlled liquid crystal-based varifocal microlens array on flexible substrates”, ILCC 2024 (July 21 to July 26, 2024), Rio de Janeiro-Brazil.
92 Aloka Sinha and Susanta Chakraborty, “Spontaneous emergence of structural patterns in chiral bent-core liquid crystal”, ILCC 2024 (July 21 to July 26, 2024), Rio de Janeiro-Brazil.
91 Aloka Sinha, “Development of Liquid crystal-based devices for optics, photonics, and energy harvesting applications,” SPIE Photonics Europe, 7-11 April 2024, Strasbourg, France. [Invited Talk]
90 Aloka Sinha, “Next-Generation Liquid Crystal Technologies: Advancing Optics and Energy Solutions,” Disorder and Soft System: Recent Trends (DSSR), 27-28 March 2024, Center for nano soft matter and sciences, Bangalore, India. [Invited Talk]
89 Vaibhav Sharma and Aloka Sinha, “Liquid crystal-based electrically controlled polarization beam splitter for controlling the logic gate operations,” 2023 IEEE Photonics Conference (IPC), November 12-16, 2023, Orlando, FL, USA.
88 Vaibhav Sharma and Aloka Sinha, “Polymer dispersed liquid crystal film for tunable surface plasmon resonance, International Conference on Optics, Photonics, And Quantum Optics, December 10-13, 2023, Kochi, Kerela, India.
87 Deepak Verma, Govind P Maurya, Sagar Jawla, V. Haridas, and Aloka Sinha, “Electrically Modified Photoluminescence in Aggregation-Induced Emission-based Luminogen Liquid Crystal” 30th National Conference on Liquid Crystals, 2-4 November, 2023, Visakhapatnam, India.
86 Kaustav Jit Bora, Aloka Sinha, “Liquid Crystal-Polymer Composites: A Novel Approach for Enhanced Piezoelectric Energy Harvesting”, International Conference on Renewable Energy and Sustainable Technology (ICREST 2024), July 4-6, 2024, Jamia Milia Islamia University, New Delhi, India.
85 Rishikesh Kushawaha, Aloka Sinha, “Tunable phase grating using negative dielectric anisotropy nematic liquid crystal,” NANOP:2023, November 27-29, Barcelona, Spain (2023). (Poster Presentation)
84 Kaustav Jit Bora, and Aloka Sinha, “Unlocking the potential of PVDF composite film’s flexoelectric output in highly sensitive mechanical sensing application”, International Conference on Carbon Neutral Technology for Sustainable Development, September 5-7, 2023, IIT Delhi, India.
83 Rahul Panchal and Aloka Sinha, “Laser beam steering device using fringing fields in liquid crystal wedge cell” 23rd IEEE International Conference on Nanotechnology (IEEE-NANO 2023), July 25, 2023, Jeju Island, Korea.
82 Debasish Bag and Aloka Sinha, “Step-height measurement with polarized michelson interferometer using geometrical phase shifting technique" PHOTONICS 2023, July, 5-8, 2023, IISc Bengaluru, India.
81 Rishikesh Kushawaha and Aloka Sinha, “Electrically Controlled Optical Diffuser Using Negative Dielectric Anisotropy Liquid Crystal” PHOTONICS 2023, July, 5-8, 2023, IISc Bengaluru, India.
80 Aysha Rani and Aloka Sinha, Temperature-dependent evolution of electrochemical and transmittance characteristics in the dispersion of 8OCB liquid crystal with CdSe/ZnS quantum dots, XXII National Seminar on Ferroelectrics and Dielectrics 2022, December 17-19, 2022, VIT University, Andhra Pradesh, India.
79 Aysha Rani and Aloka Sinha, “Optical memory in the mixtures of calamitic liquid crystal and semiconducting quantum dots” 29th National Conference on Liquid Crystals (NCLC-2022), December 8-10, 2022, Christ University, Bangalore, India.
78 Kaustav Jit Bora, Aloka Sinha, “Design of an energy harvesting device to realize the flexoelectric effect in the nematic liquid crystal film” 29th National Conference on Liquid Crystals (NCLC2022), December 8-10, 2022, Christ University, Bangalore, India.
77 Vaibhav Sharma, Aloka Sinha, “Liquid Crystal based channel waveguide using In-plane switching configuration for integrated photonics application” 29th National Conferences on Liquid Crystal (NCLC-2022), December 4-7, 2022, Christ University, Bangalore, India.
76 Rishikesh Kushawaha, Aloka Sinha, "Temperature-dependent light diffusion performance of nematic liquid crystal and cellulose acetate-based PDLC film," Conference on Optics, Photonics & Quantum Optics (COPaQ-2022), November 10 -13, 2022, IIT Roorkee, India.
75 Vaibhav Sharma, Aloka Sinha, "Liquid crystal waveguide based retarder for polarization converter and high optical path generator" Conference on Optics, Photonics & Quantum Optics (COPaQ2022), November 10 -13, 2022, IIT Roorkee, India.
74 Rahul Panchal, Aloka Sinha, " An electrically tunable liquid crystal waveguide-based continuous polarization rotator" Conference on Optics, Photonics & Quantum Optics (COPaQ-2022), November 10 -13, 2022, IIT Roorkee, India
73 A. Kumari, Hanuman Singh, Sameer Dhawan, V. Haridas and Aloka Sinha, “Organic Solvent Sensor using Pseudopeptidic Bottlebrush Polymer Dispersed Liquid Crystal” E-MRS 2022 Fall Meeting, September 19-22, 2022, Warsaw University of Technology, Warsaw, Poland.
72 Asha Kumari, Narinder Kaur, and Aloka Sinha, “Flexible Ultraviolet Photodetector and Shielding Device using Liquid Crystals/Polymer Composites” 27th Microoptics Conference, MOC2022, September 25 – 28, 2022, Abbe-Zentrum Beutenberg, Jena, Germany.
71 Asha Kumari, Sameer Dhawan, Hanuman Singh, V Haridas, Aloka Sinha, Design and Control Over Morphology of Pseudopeptidic Bottlebrush Polymer/Liquid Crystal Composites, IEEE International Conference on Nanoelectronics, Nanophotonics, Nanomaterials, Nanobioscience & Nanotechnology (5NANO), Kerala, India, 2022. doi: 10.1109/5NANO53044.2022.9828980.
70 Asha Kumari and Aloka Sinha, “Inflection in Hysteresis and Haze of PDLC Devices by Ferroelectric Nanoparticle”, 26th MOC2021, Congress Center, ACT CITY, Hamamatsu, Shizuoka, Japan. Sep 26-29, 2021.
69 Rahul Panchal and Aloka Sinha, “Liquid Crystal Clad Polymer Waveguide based Electro-optic Attenuator”, 26th MOC 2021, Congress center, ACT CITY, Hamamatsu, Shizuoka, Japan. Sep 2629, 2021.
68 Shilpi Bose, Aloka Sinha, Santanu Ghosh “Exploiting Properties of Fe3O4 doped 5CB Nematic Liquid Crystal,” 5th IEEE-ICEE 2020, IIT Delhi, Delhi, India, November26-28, 2020.
67 Akriti Singh, Asha Kumari, and Aloka Sinha, " Characterization of Fe2NiO4 nanoparticles doped PDLC for applications in display technology", 5th IEEE-ICEE 2020, IIT Delhi, Delhi, India, Nov 26-28, 2020
66 Asha Kumari and Aloka Sinha, “Augmentation in Frequency Modulation properties of PDLCs by addition of Ferroelectric Nanoparticles”, 5th IEEE-ICEE 2020, IIT Delhi, Delhi, India, Nov 26-28, 2020.
65 Amina Nafees and Aloka Sinha, “Dielectric properties of mixture of bent-core and ferroelectric liquid crystals,” JTACON-2020, Jamia Millia Islamia University, Delhi, India, 17-18 Feb. 2020.
64 Sourav Patranabish, Yiwei Wang, Aloka Sinha, and Apala Majumdar, "One-dimensional Landaude Gennes model for bent-core nematic liquid crystals: effect of confinement, coupling and extension to nano-doped systems", ICERM Workshop on Numerical Methods and New Perspectives for Extended Liquid Crystalline Systems, Brown University, USA, December 09-13, 2019.
63 Rahul Panchal, Aloka Sinha, “Low threshold electro-optic switching in liquid crystal cladding based waveguide,” 26th NCLC-2019, Chitkara University, Chandigarh, India, October 21-23, 2019.
62 Aysha Rani, Aloka Sinha, “Thermal Behaviour of Ions in Nematic Liquid Crystal Doped with CDSe/ZnS Quantum Dots”, 3rd International Conference on Advanced Materials for Power Engineering, Mahatma Gandhi University, Kerala, India, august 9-11,2019.
61 Asha Kumari and Aloka Sinha, “Effect of BaTiO3 doping on Dielectric properties of PolymerLiquid Crystals composites”, ICAM 2019, Jamia Millia Islamia, New Delhi, March 6-7, 2019.
60 Mukesh Sharma, Aloka Sinha and M. R. Shenoy, “Fabrication of low-loss rectangular-core liquid crystal waveguides for photonic applications,” 14th International Conference on Fiber Optics and Photonics (PHOTONICS 2018), IIT Delhi, December 12-15, 2018.
59 Asha Kumari and Aloka Sinha, “Design and Study of Epoxy based Polymer Dispersed Liquid Crystal for Light Shutters”, 14th International Conference on Fiber Optics and Photonics (PHOTONICS 2018), IIT Delhi, December 12-15, 2018.
58 Ram Ashish Yadav, Sourav Patranabish and Aloka Sinha, “Liquid Crystal Based Ultraviolet Sensor”, 14th International Conference on Fiber Optics and Photonics (PHOTONICS 2018), IIT Delhi, December 12-15, 2018.
57 Amina Nafees, Gayatri Kalita and Aloka Sinha, “Electric field induced biaxial and polar switchable nematic phase for application in faster electro-optical devices”, 14th International Conference on Fiber Optics and Photonics (PHOTONICS 2018), IIT Delhi, December 12-15, 2018.
56 M. R. Shenoy, Mukesh Sharma, N. Vogirala and Aloka Sinha, “Characterization of liquid crystal core waveguide in the visible and near IR wavelengths,” Advanced Photonics Congress (APC 2018), July 2-5, 2018, Zurich, Switzerland.
55 Gaurav Verma and Aloka Sinha, “Optical Nonlinear Image Encryption System using Optically Generated Biometric Phase Mask”, Applications of Lasers for Sensing and Free Space Communications 2018, Orlando, Florida, United States, 25–28 June 2018.
54 M. R. Shenoy, Mukesh Sharma, N. Vogirala and Aloka Sinha, “Characterization of liquid crystal core waveguide in the visible and near IR wavelengths,” Advanced Photonics Congress (APC 2018), July 2-5, 2018, Zurich, Switzerland.
53 Gaurav Verma and Aloka Sinha, “Optical Nonlinear Image Encryption System using Optically Generated Biometric Phase Mask”, Applications of Lasers for Sensing and Free Space Communications 2018, Orlando, Florida, United States, 25–28 June 2018.
52 Pradeep Kumar and Aloka Sinha, “Effect of TiO2 nanoparticle doping on the electrical properties of ferroelectric liquid crystal”, Advances in Optical Science and Engineering, Springer proceedings in Physics, Springer, Singapore, 194, 499-505, 2017.
51 Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “1 × 2 Optical Switch Based on Nematic Liquid Crystal Core Waveguide”, WRAP 2017, MEC, Hyderabad, India.
50 Pradeep Kumar and Aloka Sinha, “Evidence of polar switching in a four-ring bent core nematic liquid crystal”, 16th International Conference on Ferroelectric Liquid Crystals, December 04 - 07, 2017, HKUST, Hong Kong.
49 Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “Electro-optic Switching in Liquid Crystal Core Waveguide at 1550 nm Wavelength”, OECC 2017, NTU Singapore.
48 Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “Liquid Crystal based Guided-wave Devices for Photonic Applications”, NCLC 2017, IISER Mohali India.
47 Amina Nafees, Aloka Sinha and Nandiraju V. S. Rao, “Effect of TiO2 Nanoparticle on the Ion Transport Property of Bent-Core Liquid Crystals”, NCLC-2017, IISER Mohali, India.
46 Sourav Patranabish, Aloka Sinha, G. Mohiuddin and Nandiraju V. S. Rao, “Study of Electroconvection Patterns Observed in Four-Ring Bent-Core Liquid Crystal Compounds”, NCLC2017, IISER Mohali, India.
45 M. R. Shenoy, Mukesh Sharma, V. Nitin and Aloka Sinha, “Design, Fabrication and Performanceanalysis of Liquid Crystal Core Waveguides”, PHOTONICS 2016, IIT Kanpur, India, December 2016.
44 Sourav Patranabish, Aloka Sinha, G. Mohiuddin, Nazma Begum, N.V.S. Rao, “Evidence of possible biaxiality in a bent-core liquid crystal compound for faster switching display applications”, PHOTONICS 2016, IIT Kanpur, India, December 2016.
43 Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “Electrically-controlled periodic segmented waveguide with a nematic liquid crystal core”, ACOFT 2016, Australian conference on optical fibre technology, Sydney, Australia, 2016. 5-8 Sep 2016.
42 Pradeep Kumar and Aloka Sinha, “Effect of TiO2 nanoparticle doping on the electrical properties of ferroelectric liquid crystal”, in Proc. Springer, OPTRONIX 2016, 3rd international conference on opto-electronics and applied optics, 2016, University of engineering and management, Kolkata, India, 2016. 18-20 Aug 2016.
41 M. R. Shenoy, Mukesh Sharma and Aloka Sinha, “Liquid crystal waveguides: A new platform for guided wave optical devices”, in Proc. Springer, OPTRONIX 2016, 3rd international conference on electro-optics and applied optics, 2016, University of engineering and management, Kolkata, India, 2016. 18-20 Aug 2016.
40 Gaurav Verma, Aloka Sinha, “Finger Knuckle Print Recognition Based on Wavelet and Gabor filtering”, in Proc. Springer, CVIP 2016, IIT Roorkee, India. Feb. 26-28. 2016.
39 Gaurav Verma, Aloka Sinha, “Design of advanced correlation filters for finger knuckle print authentication systems”, in Proc. Springer, CVIP 2016, IIT Roorkee, India. Feb. 26-28. 2016.
38 Gaurav Verma, Aloka Sinha, “Nonlinear optical cryptosystem free from amplitude-phase retrieval attacks”, in Proc. IEEE, ICMOCE2015, IIT Bhubaneswar, Odisha, India. 8-20 December 2015.
37 M. R. Shenoy, Mukesh Sharma and Aloka Sinha, “Liquid crystal based integrated optical waveguide,” Exhibition: Laser world of Photonics 2015, New Delhi, 2015.
36 Aloka Sinha, “Smart-Vote: Digital Election Ink Based Voting System,” EACEEE 2015, Phuket, Thailand, 2-4 Oct, 2015.
35 Aloka Sinha, “Family of Nonlinear Optical Cryptosystems to thwart Phase-retrieval attacks,” OSA – COSI 2015, Arlington, USA, 7-9 Jun, 2015.
34 Mukesh Sharma, Aloka Sinha and M. R. Shenoy, “Realization of an Electrically-Controlled Optical Switch Using Nematic Liquid Crystal Core Waveguide,” 12th International Conference on Fiber Optics and Photonics 2014, IIT Kharagpur, India, December 13-16, 2014.
33 Narendra Singh, Aloka Sinha, “Chaos based secure communication scheme using voltagecontrolled oscillator and logistic map,” ICET, Bali, 10-12 Dec, 2013.
32 Gaurav Verma, Aloka Sinha “Finger knuckle print based verification using minimum average correlation filter,” AITSR, Taiwan, 27-29, Dec 2012.
31 Nirmala Saini and Aloka Sinha, “A palmprint recognition system based on Gabor Wigner transform as feature extraction technique “, ICHB, Hong Kong, Nov 2011.
30 Nirmala Saini and Aloka Sinha, “Comparative study of biohashing technique using different feature extraction methods”, Proc. of SPIE, DOI: 10.1117/12.900129, 2011.
29 Aloka Sinha and Nirmala Saini, Digital holographic security system based on multiple biometrics, ACE ’10, Penang, Malaysia, Mar. 2010.
28 Narendra Singh and Aloka Sinha, “Optical image encryption using random gyrator transform and chaotic dynamics,” Nineteenth International Conference on Optoelectronics, Fiber Optics and Photonics-2008, New Delhi, 2008.
27 Nirmala Saini and Aloka Sinha, “Optimal filter design for pattern recognition using simulated annealing”, PHOTONICS – 2008, International Conference on Fiber Optics and Photonics IIT Delhi, pp. 425, December 13-17, 2008, New Delhi, India,
26 R. Bose and Aloka Sinha, “Tunable patch antenna using a liquid crystal substrate,” RADAR ’08, May 2008. pp. 1-6.
25 Narendra Singh and Aloka Sinha, “Digital image watermarking using chaotic dynamics”, Proceeding of the XXXIII optical society of India (OSI) symposium 2007, Tezpur, 2007.
24 Nirmala Saini and Aloka Sinha, “Optical image encryption using Biometrics,” Proceedings of XXXIIIOSI Symposium on Optics and optoelectronics (2007) pp. 155-157, December, 18-20, Tezpur, 2007.
23 Nirmala Saini and Aloka Sinha, “Multiple-image encryption using biometrics,” Proceedings of XXXIIIOSI Symposium on Optics and optoelectronics (2007) pp. 439-442, December, 18-20, 2007, Tezpur, 2007.
22 Aloka Sinha, “Optimal Filter design for Face Classification using Bacteria Foraging Algorithm,” CSECS 2007, Cairo, Egypt, Dec. 29–31, 2007.
21 Narendra Singh and Aloka Sinha, “Optical image encryption using extended fractional Fourier transform and Kaplan-Yorke map”, XXXII OSI symposium 2007, Vadodara, Gujarat, March 2007.
20 Libin Kuriakose and Aloka Sinha, “Optimal filter design using Bacteria Foraging Algorithm,” Proceedings OSI symposium, Vadodara, Gujarat, March 2007.
19 Aloka Sinha, “Fractional Fourier Transform based Key Exchange for Optical Asymmetric Key Cryptography,” EHAC 2007, Corfu, Greece, Feb. 16-19, 2007.
18 Narendra Singh and Aloka Sinha, “Optical image encryption using extended fractional Fourier transform”, Eighth International Conference on Optoelectronics, Fiber Optics and Photonics-2006, Hyderabad, QISP-17, December 2006.
17 Aloka Sinha, “Biometric-based recognition using rough set theory and genetic algorithm,” Proceedings Photonics 2006, Hyderabad. Dec 2006.
16 Aloka Sinha, “First Order Hyperpolarizability of a Ferroelectric Liquid Crystal,” ICLC2006, Mumbai, India. Dec 2006.
15 Narendra Singh and Aloka Sinha, “Optical image encryption using extended fractional Fourier transform and chaos”, Proceedings Photonics 2006, Hyderabad.
14 Aloka Sinha, “Fractional Fourier transform for Public Key Encryption,” Proceedings ICOL 2005, Dehradun, Dec. 2005. P. 339.
13 A. Gupta, A. Kumar and Aloka Sinha, “Optimal Composite Filter for Iris Recognition,” Proceedings ICOL 2005, Dehradun, Dec. 2005. P. 369
12 Aloka Sinha and Kehar Singh, Image encryption using fractional Fourier transform and 3D jigsaw transform”, Proceedings Photonics 2004, Cochin.
11 Aloka Sinha and Kehar Singh, “Design of a composite wavelet matched filter using breeder genetic algorithm”. Optics-photonics Design and Fabrication (ODF 2002), Oct 30- Nov 1, Tokyo (Japan).
10 Aloka Sinha and Kehar Singh, “Image encryption using Digital Signatures”. Conference on Photonics and Engineering 2003, 6-8 Jan, NSIT, Delhi.
9 Aloka Sinha and Kehar Singh, “Breeder genetic algorithm for pattern recognition”. Conference on Photonics and Engineering 2003, 6-8 Jan, NSIT, Delhi.
8 Aloka Sinha and Kehar Singh, “Breeder genetic algorithm for the design of a composite wavelet matched filter for fingerprint identification”. National conference on Sensor Technology, 2002, Sept.26-27, Delhi.
7 W. Haase, L.M. Blinov, S.A. Pikin, E.P. Pozhidaev, F.V. Podgornov, Aloka Sinha, A. Yasuda, S. Hashimoto, “High frequency and low voltage V-shaped switching in smectic-C* phase of ferroelectric liquid crystals”. FLC 2001, Washington DC, USA. (invited paper).
6 Aloka Sinha, W. Haase and Roman Dabrowski, “V-shaped switching in W-128 series of compounds”. FLC 2001, Washington DC, USA.
5 W. Haase, F.V. Podgornov, Aloka Sinha and E.P. Pozhidaev, “High frequency V-shape mode in ferroelectric liquid crystals”. Proc. of SPIE's Electronic Imaging, vol. 4481, San Jose, California. Jan 2001.
4 Aloka Sinha and T.A. Prasada Rao, "Electro optic Kerr effect studies in the pre -transition regime of a homologous series of liquid crystals". Proc. of SPIE's Electronic Imaging '99, San Jose, California. Jan 1999.
3 Aloka Sinha and T.A. Prasada Rao, “Influence of structure on the nonlinear optical properties of liquid crystals”. Proc. of the 5th IUMRS - ICA '98, Bangalore, 1998.
2 Aloka Sinha and T.A. Prasada Rao, "Novel materials for third order nonlinear optical effects". Proc. of the Photonics '98, International conf. On fiber optics and photonics, New Delhi. Dec 1998.
1 Aloka Sinha, T.A. Prasada Rao and V.R.K. Murthy, “Electro optic studies on Liquid Crystals at phase transition temperatures”. Tenth international seminar on Ferroelectrics and Dielectrics, XNFSD, IIT Madras, Dec. 16-18, 1998.

Monograph

Afaque Karim, Harsh Yadav, Aloka Sinha, Liquid Crystal Based Patch Antenna, Lap Lambert Academic Publishing, ISBN: 978-3-659-46693-9. 2013.

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