Rensselaer Polytechnic Institute
Calcutta University (India)
Dipankar Roy did his undergraduate studies at Calcutta University, India. For his doctoral work at Rensselaer Polytechnic Institute during 1981-86, Roy studied electrochemical interfaces using surface enhanced Raman scattering (SERS). After receiving his Ph.D. in Physics (condensed matter - experimental) , Roy did his postdoctoral research at Cornell University during 1986-1989. His research at Cornell focused on nonlinear optical and ultrafast multi-photon processes in liquids. He joined the faculty of the Physics Department at Clarkson University in the fall of 1989. Roy's earlier research at Clarkson concentrated on optical studies of solid-liquid interfaces using optical second harmonic generation, surface plasmon resonance, and infrared ellipsometry techniques, in combination with a broad range of electro-analytical measurements. Roy's group at Clarkson has also been engaged in characterization studies of layer nanostructures, thin-film interfaces and photo-voltaic systems using electroanalytical and optical techniques. Roy’s current research focuses on various materials aspects of electrochemical energy storage/conversion and semiconductor device fabrication.
Professor Roy's research interests are in the following areas:
- Materials for energy storage and energy conversion devices
- Chemical Mechanical Planarization (CMP)
- Electrochemical deposition for integrated circuit applications
- Time resolved Fourier transform electrochemical impedance spectroscopy (FT-EIS
- Surface plasmon resonance spectroscopy
- Optical characterization of chemically assembled nanomaterials
- Second harmonic generation (SHG) studies of solid-liquid interfaces
Current Research:
- Tribo-electroanalytical evaluation of CMP slurries and post-CMP cleaning solutions
- Anode materials for Direct alcohol fuel cells
- Electrodes and electrolytes for lithium ion batteries
- Electrodes for redox supercapacitors
C. A. Johnson and D. Roy, In Situ Electrochemical Evaluation of Post-CMP Cleaning Reactions for Cobalt and Copper Films under Brushing Conditions, ECS Journal of Solid State Science and Technology 8 (2019) P3163-P3174.
D. E. Simpson, C. A. Johnson, and D. Roy, Pulsed Galvanostatic Electrodeposition of Copper on Cobalt Using a pH-Neutral Plating Bath and Electroless Seeds, Journal of The Electrochemical Society 166 (2019) D3142-D3154.
D. Roy, Electrochemical Assessment of Slurry Formulations for Chemical Mechanical Planarization of Metals: Trends, Benefits and Challenges, ECS Journal of Solid State Science and Technology 7 (2018) P209-P212. Invited Perspective Article.
S. E. Rock, D. E. Simpson, M. C. Turk, J. T. Rijssenbeek, G. D. Zappi and D. Roy, Nucleation Controlled Mechanism of Cathode Discharge in a Ni/NiCl2 Molten Salt Half-Cell Battery, Journal of The Electrochemical Society163 (2016) A2282-A2292.
X. Shi, D. E. Simpson and D. Roy, The role of chemisorbed hydroxyl species in alkaline electrocatalysis of glycerol on gold,
Physical Chemistry Chemical Physics 17 (2015) 11432-11444.
J.E. Garland, D.J. Crain and D. Roy, Utilization of electrochemical impedance spectroscopy for experimental characterization of the diode features of charge recombination in a dye sensitized solar cell, Electrochimica Acta 148 (2014) 62-72.
D. J. Crain, J.P. Zheng and D. Roy, "Electrochemical Examination of Core-Shell Mediated Li+ Transport in Li4Ti5O12 Anodes of Lithium Ion Batteries", Solid State Ionics 240 (2013) 10-18.
J. E. Garland, D. J. Crain, J. P. Zheng, C. M. Sulyma and D. Roy, Electro-analytical characterization of photovoltaic cells by combining voltammetry and impedance spectroscopy: voltage dependent parameters of a silicon solar cell under controlled illumination and temperature, Energy and Environtal Science, 4 (2011) 485-498.
J.P. Zheng, C.M. Pettit, P.C. Goonetilleke, G.M. Zenger and D. Roy, D.C. Voltammetry of Ionic Liquid based Capacitors: Effects of faradaic reactions, electrolyte resistance and voltage scan speed investigated using an electrode of carbon nanotubes in EMIM-EtSO4, Talanta 78 (2009) 1056-1062.
C.M. Pettit, P.C. Goonetilleke, C.M. Sulyma and D. Roy, Combining impedance spectroscopy with cyclic voltammetry: Measurement and analysis of kinetic parameters for faradaic and nonfaradaic reactions on thin-film gold,
Analytical Chemistry 78 (2006) 3723-3729.
K.A. Assiongbon and D. Roy, Electro-oxidation of methanol on gold in alkaline media: Adsorption characteristics of reaction intermediates studied using time resolved electro-chemical impedance and surface plasmon resonance techniques, Surface Science 594 (2005) 99-119.
D. Roy and J. H. Fendler, Reflection and Absorption Techniques for Optical Characterization of Chemically Assembled Nanomaterials, Advanced Materials 16 (2004) 479-508.