Azhad U Chowdhury

Postdoctoral Research Associate

Azhad U. Chowdhury received his Ph.D. in December 2016 from Purdue University, Indiana where he worked under the supervision of Prof. Garth J. Simpson studying nucleation and polymorphism of active pharmaceuticals ingredients (APIs) using second harmonic generation (SHG) imaging, vibrational spectroscopy and synchrotron X-ray microdiffraction. After his PhD he joined Oak Ridge National Laboratory (ORNL) as a postdoctoral research associate in April 2017. Since then he has been working with Dr. Ben Doughty studying various interfaces to understand the interfacial behavior in mass and energy transportation between two neighboring bulk phases with vibrational sum frequency generation (vSFG) spectroscopy. His current research focuses on formation and growth of solid electrolyte interphase (SEI) on electrode surface using vSFG.    


US Patent App. 16/292,676, 2019: “Vibrational Sum Frequency Generation Using Shaped Near Infrared Light”, September 5, 2019

Specialized Equipment

Nonlinear optical microscopy, linear and nonlinear vibrational spectroscopy


Beam line 23-ID-B, Argonne national laboratory
Spallation Neutron Source, ORNL


Summer Research Award, Department of Chemistry, Purdue University 2014
FACSS Innovation Award, Awarded to Simpson Group, FACSS 2014
FACSS Student Poster Award, Federation of Analytical Chemistry and Spectroscopy Societies 2014
CUNY Leadership Award, The City University of New York, NY 2009

Other Publications

Chowdhury, A. U.; Dettmar, C. M.; Sullivan, S. Z.; Zhang, S.; Jacobs, K. T.; Kissick, D. J.; Maltais, T.; Hedderich, H. G.; Bishop, P. A.; Simpson, G. J. Kinetic Trapping of Metastable Amino Acid Polymorphs. Journal of The American Chemical Society, 2014, 136 (6), 2404−2412.
Jang, S., Chowdhury, A. U., Kang, J., Lee, J. I.; Photorelease Study of γ- Amino Glutamate from 1,2,2-triphenyl-ethanone; Letters in Organic Chemistry, 2014, 11 (3), 230-235(6).
Snyder, G. R., Chowdhury, A. U., and Simpson, G. J.; Exciton Coupling Model for the Emergence of Second Harmonic Generation from Assemblies of Centrosymmetric Molecules; The Journal of Physical Chemistry A, 2014, 118 (24), 4301-4308.
Chowdhury, A. U., Shijie, Z., Simpson, G. J.; Powders Analysis by Second Harmonic Generation Microscopy. Analytical Chemistry, 2016, 88 (7), 3853-3863.
Chowdhury, A. U., Ye, D.H., Song, Z.; Zhang, S., Hedderich, H. G., Bouman, C. A., Simpson, G. J.; Sensitive Detection of Polymorph Transitioning in Clopidogrel Bisulphate by Second Harmonic Generation Microscopy with Raman Spectroscopy. Analytical Chemistry, 2016, 88 (7), pp 3853–3863.
Scarborough, N. M., Godaliyadda, G.M.D.P, Hye Ye,D., Kissick, D. J., Zhang, S., Newman, J. A., Sheedlo, M. J., Chowdhury, A. U., Fischetti, R. F., Das, C., Buzzard, G. T., Bouman, C. A. and Simpson, G.J.; Dynamic X-ray Diffraction Sampling for Protein Crystal Positioning; J. Synchrotron Rad, 2017, 24.
Zhang, S.; Song, Z.; Godaliyadda, G. M. Dilshan P.; Ye, D.H.; Hedderich, H. G., Chowdhury, A. U.; Sengupta, Atanu; Buzzard, Gregery, T.; Bouman, C. A. and Simpson, G. J.; Dynamic Sparse sampling for Confocal Raman Microscopy. Analytical Chemistry, 2018, 90 (7), pp 4461–4469.