Dr.Gazi Ameen Ahmed

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Associate Professor

 

Department of Physics

Tezpur University

Napaam

Tezpur-784028

India

 

gazi@tezu.ernet.in     gaziaahmed@yahoo.com

 

+91-3712-267008 (extn.5556)

+91-3712-267006

 

 

 

Academic profile:

        2002   Ph.D.        Gauhati University

1992    M.Sc.       Gauhati University

 

Research interests:

  • Optoelectronic Instrumentation

  • Photonics

  • Nanotechnology

 

Publications:

  

        Papers in refereed journals : 33

        Books: 1

 

Selected publications:

  1. G.A.Ahmed, G.K.D.Mazumdar and A.Choudhury, Investigations by a designed and fabricated laser based Air Quality monitoring system, Journal of the Instrument Society of India, 26 (3) , (1996), 734-738.
  2. D.Das, G.A.Ahmed, G.K.D.Mazumdar and A.Choudhury, Investigations on atmospheric humidity profile at varying oxygen levels with a laser based monitoring system, Asian Journal of Physics,10 (3), (2001), 323-335.
  3. J.K.Sarma and G.A.Ahmed, Gluon distribution at moderately low-x from NMC deuteron structure function data, Indian Journal of  Pure & Applied Physics, 40, (April 2002), 235-241.
  4. D.Mohanta, G.A.Ahmed and A.Choudhury, Spectroscopic Investigations of Carrier Confinement and Surface Phonon Detection in Polymer Embedded CdS Quantum Dot Systems, Chinese Journal of Physics, 42(6) , (December 2004), 740-750.

  5. A.S.Goswami, G.A.Ahmed and A.Choudhury, Super resolution and better contrast in second harmonic scanning optical microscope with low power laser beam, Journal of Optics, 33(1), (2004), 29-35.

  6. S.Choudhury, D.Mohanta, G.A.Ahmed, S.K.Dolui, D.K.Avasthi and A.Choudhury, Effect of 160 MeV Ni12+ ion irradiation on PbS quantum dots, Journal of Luminescence, 114, (2005),95-100.

  7.  S.Choudhury, G.A.Ahmed, D.Mohanta, S.K.Dolui, D.K.Avasthi, A.Choudhury, Luminescence study of bare and coated CdS quantum dots: Effect of SHI irradiation and ageing, Nuclear Instruments and Methods in Physics Research B, 240 (2005), 690-696.
  8. D.Mohanta, G.A.Ahmed, A.Choudhury, F.Singh, D.K.Avasthi, G.Boyer, G.A.Stanciu, Scanning probe microscopy, luminescence and third harmonic generation studies of elongated CdS:Mn nanostructures developed by energetic oxygen-ion-impact,  European Physical Journal:D Applied Physics, 35, (2006), 29-36.
  9. D.Mohanta, G.A.Ahmed, F.Singh, D.K.Avasthi, A.Choudhury, Properties of 80 MeV oxygen ion irradiated ZnS:Mn nanoparticles and exploitation in nanophotonics, Journal of Nanoparticle Research,8,(2006), 645-652.
  10. S.Chowdhury, A.M.P.Hussain, G.A.Ahmed, D.Mohanta, A.Choudhury, Third order nonlinear optical response of PbS quantum dots, Semiconductor Physics, Quantum Electronics & Optoelectronics, 9 (2), (2006), 45-48.
  11. D.Das, G.A.Ahmed, A.Choudhury, G.K.D.Mazumdar, Studies on water vapour droplet size distribution using a newly designed and fabricated air quality monitoring system, Journal Instrument Society of India, 36 (3), (2006), 174-182.
  12. U.Das, D. Mohanta, G.A.Ahmed, A.Choudhury, F.Singh, D.K.Avasthi, Indian Journal of Physics, 81 (2007) 155-159.
  13. S.Chowdhury, A.M.P.Hussain, G.A.Ahmed, A.Choudhury, Frequency dependent electrical characteristics of PbS quantum dots, European Physical Journal:D Applied Physics, 42, (2008), 113-119.
  14. S.Chowdhury, A.M.P.Hussain,G.A.Ahmed, F.Singh,D.K.Avasthi, A.Choudhury, Effect of swift heavy ion irradiation on bare and coated ZnS quantum dots, Materials Research Bulletin, 43, (2008), 3495-3505.
  15. D.Das, G.A.Ahmed, A.Choudhury, Studies on water vapour droplets using a laser based air quality monitoring system, Indian Journal of Physics, 82 (5), (2008), 539-544.
  16. A.Gogoi and G.A.Ahmed, A T-matrix approach for morphological characterization of spherical nanoparticles using laser, Indian Journal of Physics, 82 (5), (2008), 567-570.
  17. A.Gogoi, A.Choudhury, G.A.Stanciu, G.A.Ahmed, Construction of a multidetector array incorporated laser-based scattering system for ultrafine TiO2 characterization, Journal of Optics, 38(2), (2009), 67-74.
  18. A.Gogoi, L.J.Borthakur, A.Choudhury, G.A.Stanciu and G.A.Ahmed, Detector array incorporated optical scattering instrument for nephelometric measurements on small particles, Measurement Science and Technology, 20, (2009), 1-10.
  19. A.Gogoi, A.K.Buragohain, A.Choudhury, G.A.Ahmed,  Laboratory measurements of light scattering by tropical fresh water diatoms. Journal of Quantitative Spectroscopy & Radiative Transfer, 110, (2009), 1566-1578.
  20. A.Gogoi, G.A.Ahmed,A.Choudhury, Nanoparticle size characterization by laser light scattering, Indian J  Phys, 83(4), (2009), 473-477.
  21. S. Chowdhury, A.M.P. Hussain, G.A. Ahmed, F. Singh, D.K. Avasthi, A.Choudhury, Luminescence study of SHI irradiated nano semiconductor: Conducting polymer composite, Journal of Luminescence, 130, (2010) 326-330.
  22. A. Gogoi, A. Choudhury  and G.A. Ahmed,  Mie scattering computation of spherical particles with very large size parameters using an improved program with variable speed and accuracy, J. Modern Optics 57 (21), (2010) 2192-2202.
  23. S.Roy and G.A.Ahmed, Computation of scattering by spherical particles with a gamma size distribution,Journal of Optics, 39 (2), (2010),76-81.
  24. N.Mazumdar, A.Gogoi, R.D.Kalita, G.A.Ahmed, A.K.Buragohain, A.Choudhury, Luminescence studies of fresh water diatom frustules, Indian Journal of Physics,84(6), (2010), 665-669.
  25. S.Roy, M.Boro, D.Mohanta, A.Choudhury and G.A.Ahmed, Size quantification of sub-micron ZnSe semiconductor particles by laboratory scattering methods, Indian Journal of Physics, 84(6), (2010), 705-709.
  26. S.Roy, A.Gogoi and G.A.Ahmed, Size dependent optical characterization of semiconductor particle: CdS embedded in polymer matrix, Indian Journal of Physics, 84(10), (2010), 1401-1407.
  27. D.P.Gogoi, G.A.Ahmed, D.Mohanta, A.Choudhury and G.A.Stanciu, Structural and optical properties of Mn doped ZnS semiconductor nanostructures, Indian Journal of Physics, 84(10), (2010), 1357-1363.
  28. S. Roy and G. A. Ahmed, Investigation of light scattering properties of laboratory synthesized sub-micron CdS semiconductor particles, Journal of Optics, 39(4) , (Oct-Dec 2010), 181-184.
  29. N. Dutta, D. Mohanta, G. A. Ahmed, A. Choudhury, R. Hristu, S. G. Stanciu and G. A. Stanciu, Two Photon Emission and Nonlinear Optical Imaging of Acetonitrile-Treated Quasi-Spherical Nanoscale PbS Systems, IEEE Photonics Journal, 2 (6), (December 2010), 1060-1068.
  30. S. Roy and G.A. Ahmed, Monte Carlo simulation of light scattering from size distributed sub-micron spherical CdS particles in a volume element, Optik, 122, (2011), 1000-1004.
  31. S.Roy , R. Mahatta , N. Barua, A. K. Buragohain and G.A.Ahmed, Monitoring of pathogen carrying air-borne tea dust particles by light scattering, Journal of Quantitative Spectroscopy & Radiative Transfer, 112, (2011), 1784-1791.
  32. R. Boruah, P. Nath, D. Mohanta, G. A. Ahmed and A. Choudhury, Photonic Properties of Butterfly Wing Infiltrated with Ag-Nanoparticles, Nanosci. Nanotechnol. Lett., 3 (4), (2011), 458-462.
  33. R.Boruah, P.Nath, D.Mohanta, G.A.Ahmed and A.Choudhury, Thickness Dependent Surface Plasmon Resonance (SPR) Response of Nanodimensional Ag-thin Films, International Journal of Nanotechnology and Applications, 5(4), (2011), 407-412.

 

BOOKS:

1.           Photonics and Quantum Structures by D.Mohanta & G.A. Ahmed, ISBN 9788184870985,  Narosa Publications, New Delhi, 2012.