Dr. Ajanta Deka

Assistant Professor, Department of Physics

Girijananda Chowdhury Institute of Management and Technology (GIMT),
N.H.-37, Azara, Guwahati - 781017, Assam

E-mail: ajantadeka@yahoo.co.in

Academic Profile :
  • Assistant Professor, GIMT, 28.07.2008 till date
  • Ph.D.: under Prof. Amarjyoti Choudhury, Department of Physics, Tezpur University (2011)
  • M.Sc. IIT Delhi, 1999
  • B.Sc. Cotton College (Gauhati University), 1996
Research Interests:
  • Theoretical condensed Matter Physics
  • Theoretical study of pure and doped nanoclusters using density functional theory (DFT)
  • Hybrid Quantum Mechanics/Molecular Mechanics
  • Optical properties of metal oxide supported nanoclusters
  • DFT based reactivity descriptors
Foreign Collaboration:
    Visiting Research Scholar to Technical Universitat Muenchen, Garching, Germany and worked with Prof. Notker Roesch on optical properties of metal oxide supported coinage metal dimmers using time dependent density functional theory during September, 2003- October, 2004 and May, 2007-November, 2007.
List of Publications:
    In International Journals
    1. A. Deka Structure and reverse hydrogen spillover in mononuclear Au0 and Au1 complexes bonded to faujasite zeolite: A density functional study, Journal of Catalysts, Vol. 2013, Article ID 467846 (2013).
    2. A. DekaInfluence of sodium loading on CO adsorption over faujasite zeolite supported gold monomers: A density functional study, Review of Applied Physics, Vol. 2, Issue 2, Pg. 33-38 (2013).
    3. A. Deka and R. C. Deka, A density functional study on equilibrium geometries, stabilities and electronic properties of Au5Li binary clusters, Applied Nanoscience 2, 359-364 (2012).
    4. A. Deka R. C. Deka and A. Choudhury, Adsorption of CO on gas phase and zeolite supported gold monomers: a computational study, Chem. Phys. Lett. 490, 184-188 (2010).
    5. R. C. Deka, A. Deka and A. Miyamoto, Density Functional Studies on the structure and reverse hydrogen spillover in Au6 cluster supported on zeolite, Catalysis Letters, 131, 155-159 (2009).
    6. A. Deka and R. C. Deka, Structural and Electronic Properties of Stable Aun (n=2-13) Clusters: A Density Functional Study, J. Molecular Structure: THEOCHEM 870, 83-93 (2008). Citations - 48
    7. M. Huix-Rotllant, A. Deka S. I. Bosko, A. V. Matveev, L. V. Moskaleva and N. Rosch, Characterization of Optical Spectra of Interacting Systems: Application to Oxide-Supported Metal Clusters, International Journal of Quantum Chemistry 108, 2978-2990 (2008).
    8. P. Mondal, K. K. Hazarika, A. Deka and R. C. Deka, Density Functional Studies on Lewis Acidity of Alkaline Earth Metal Exchanged Faujasite Zeolite, Molecular Simulation, 34, 1121-1128 (2008).
    In National Journals
    1. R. C. Deka, P. Mondal, A. Deka and A. Miyamoto, DFT based reactivity descriptors to predict the influence of alkali cations on the Bronsted acidity of zeolites, Bull. Catal. Soc. India, 8, 140-155 (2009).
    In Conference Proceedings
    1. A. Deka R. C. Deka and A. Choudhury, Density functional studies on the structure and reverse hydrogen spillover in zeolite supported gold nanoclusters, Proceedings of the National Conference on Advances in Theoretical and Physical Chemistry, University of Calicut, Calicut, Kerala, March 19-20, 2009.
Conferences Attended:
    1. A. Deka Structure and stability of potassium doped Au6 clusters: a density functional study, National Seminar on Frontiers in Science and Technology, Gauhati University, Guwahati, March 8-9, 2013.
    2. A. Deka Structure and stability of Pt doped Aun clusters: a density functional study, Theoretical Chemistry Symposium 2012, IIT Guwahati, December 19 - 22, 2012.
    3. A. Deka and R. C. Deka, A density functional study on structural, electronic and reactivity properties of Aun (n = 2-13) nanoclusters, Emerging Trends in Chemical Sciences, Gauhati University, Guwahati, March 30-31, 2012.
    4. A. Deka and R. C. Deka, equilibrium geometries, stabilities and electronic properties of Ag doped Aun clusters (n=2-7): A density functional study, National Symposium on Current Trends in Computational Chemistry (CTCC) -2012, NEHU, Shillong, March 16-17, 2012.
    5. A. Deka and R. C. Deka, A computational study of CO adsorption on NaY zeolite supported gold monomers by ONIOM method, International Symposium on Advances in Chemical Sciences - 2012, IIT Guwahati, Guwahati, 30th January, 2012.
    6. A. Deka and R. C. Deka, A density functional study on equilibrium geometries, stabilities and electronic properties of Au5Li binary clusters, 2nd International Conference on Advanced Nanomaterials and Nanotechnology, ICAAN - 2011, IIT Guwahati, Guwahati, December 8-10, 2011.
    7. A. Deka, R. C. Deka and A. Choudhury, Structure and stability of Au5M (M=Na, Li) clusters: a density functional study, National Conference on Chemistry, Chemical Technology and Society, Tezpur University, Tezpur, November 11-12, 2011.
    8. A. Deka, R. C. Deka and A. Choudhury, Adsorption of CO and O2 and their co-adsorption on Au­6 nanocluster, National Conference on Smart Nanostructures (NCSN-2011), Tezpur University, Tezpur, January 18-20, 2011.
    9. A. Deka, R. C. Deka and A. Choudhury, A computational study of CO and O2 adsorption on cationic, neutral and anionic gold hexamer, 20th National Symposium on Catalysis, NCCR, IIT Madras, Chennai, December 19-22, 2010.
    10. A. Deka, R. C. Deka and A. Choudhury, A computational study on CO adsorption on zeolite supported gold monomers by ONIOM method, Recent Developments & Trends in Computational Chemistry, NEHU, Shillong, March 12-13, 2010.
    11. A. Deka, R. C. Deka and A. Choudhury, Structure and Reverse Hydrogen Spillover in Mononuclear Au0 and Au1 Complexes Bonded to Faujasite Zeolite - A Density Functional Study, 14th National Workshop on Catalysis, Catalysis for Clean Environment and Sustainable Future, Tezpur University, December 21-23, 2009.
    12. A. Deka, R. C. Deka and A. Choudhury, A density functional study of carbon monoxide adsorption on zeolite supported gold monomers, International Conference on Advanced Nanomaterials and Nanotechnology, ICAAN - 2009, IIT Guwahati, December 9-11, 2009.
Books Published:
    1. Ajanta Deka, Ramesh Ch. Deka and Amarjyoti Choudhury, Electronic Structure of gold nanoclusters, ISBN Number: 978-3-659-43515-7, Lap Lambert Academic Publishing, Germany (Sept., 2013).
Research Projects Undertaken:
    1. Geometries, stabilities and electronic properties of Ag doped gold nanoclusters: a density functional study, AICTE, New Delhi, March, 2012-March, 2014.