Dr. Aloka Sinha

Prof. Aloka Sinha
Professor
Indian Institute of Technology Delhi
Hauz Khas,New Delhi-110016
Tel:+91-11-2659 6003 (O)
aloka[at]physics.iitd.ac.in

Areas of Interest:

Liquid crystals, Optical image processing

Selected recent publications:

  1. Pradeep Kumar, Avinash Kishore and Aloka Sinha, “Analog switching in the nanocolloids of ferroelectric liquid crystals,”Applied Physics Letters, vol. 108, no. 26, doi: 262903, 2016.
  2. 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 Advances, vol. 6, no.49, pp. 43069-43079, 2016.
  3. Mukesh Sharma, M. R. Shenoy and Aloka Sinha, “A low-loss optical switch using liquid crystal core waveguide with polymer cladding,” IEEE Journal of Lightwave Technology, vol. 34, no. 13, pp. 3065–3070. 2016.
  4. Gaurav Verma and Aloka Sinha, “Securing information using optically generated biometric keys,” Journal of Optics (IOP), vol. 18, no. 11, doi:10.1088/2040-8978/18/11/115701. 2016
  5. Gaurav Verma and Aloka Sinha, “Digital holographic-based cancellable biometric for personal authentication,” Journal of Optics (IOP), vol. 18, no. 5, doi:10.1088/2040-8978/18/5/055705. 2016.
  6. 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”, Advanced Materials Letters, vol. 7, no. 2, pp. 104-110, 2016.
  7. Aloka Sinha, “Nonlinear optical cryptosystem resistant to standard and hybrid attacks”. Optics and Lasers in Engineering, vol. 81 pp. 79–86, 2016.
  8. 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,” Optical Materials, 49, pp. 292–296, 2015.
  9. Pradeep Kumar and Aloka Sinha, “Effect of barium titanate nanoparticles of different particle sizes on electro-optic and dielectric properties of ferroelectric liquid crystal,” Phase Transitions, 88, pp. 605-620, 2015.
  10. 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 Advances, vol. 5, no. 9, pp. 7001-7006, 2015.
  11. Nirmala Saini and Aloka Sinha, “Video encryption using chaotic masks in joint transform correlator” J. Opt., vol. 17, no. 3, 035701 doi:10.1088/2040-8978/17/3/035701, 2015.
  12. M. R. Shenoy, Mukesh Sharma, Aloka Sinha, “An Electrically-Controlled Nematic Liquid Crystal Core Waveguide With a Low Switching Threshold,” IEEE J. Lightwave Technol., vol. 33, no. 10, pp. 1948-1953, 2015.