SHALAKA DEWAN Maryland Hall 118, 3400 N Charles Street, John Hopkins University, Baltimore MD Phone: (work);

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1 SHALAKA DEWAN Maryland Hall 118, 3400 N Charles Street, John Hopkins University, Baltimore MD Phone: (work); sdewan3@jhu.edu EDUCATION Ph.D. Chemistry Department of Chemistry, Temple University, Philadelphia, PA-19122, USA Advisor: Prof. Eric Borguet Title: Ions and the structure and dynamics of interfacial water at charged surfaces Master of Science (M.Sc.), Physical Chemistry University of Mumbai Ramnarain Ruia College, Matunga, Mumbai Bachelor of Science (B.Sc.), Chemistry University of Mumbai Ramnarain Ruia College, Matunga, Mumbai FELLOWSHIPS AND AWARDS Postdoctoral Fellowship, Whiting School of Engineering, Johns Hopkins University, Present The 2015 Coblentz Society Student Award in Spectroscopy University Fellowship awarded by the Graduate School, Temple University, Spring Late Prin. A. P. Rao Prize and Medallion (Chemistry), awarded by Ramnarain Ruia College, Mumbai University, recognizing good academic record and excellent extra-curricular achievements, RESEARCH EXPERIENCE Post-doctoral Research Projects Surface spectroscopy of nanomaterials used in electrochemical fuel cells as alternative renewable energy sources: Operation and maintenance of laser laboratory to develop sumfrequency generation (vsfg) spectroscopy as the in-situ probe of surface interactions occurring at the nanocatalytic systems used in electrochemical reduction of CO, and ethanol oxidation, with applications fuel cells. Research Projects and Collaborations Graduate Program Ultrafast vibrational dynamics of interfacial water at oxide surfaces: Development of timeresolved vibrational sum-frequency generation (vsfg) spectroscopy methods for the S.Dewan 01/08/2016 1

2 measurement of the ultrafast (sub femtosecond) vibrational relaxation of the O-H modes of interfacial water in contact with charged mineral surfaces (silica and alumina). We aim to develop a fundamental understanding of how addition of on alters the behavior of interfacial water at mineral surfaces. Effect of salt on the silica/water interfaces as a function of bulk water ph. Using vibrational- SFG spectroscopy we showed how hydrogen-bonding in the first few interfacial layers of water at charged silica surfaces changes with ph and how addition of salt affects this change. Collaboration with Dr. Mohsen S. Yeganeh, Senior Scientist, ExxonMobil Research Corporation. Molecular Dynamics simulation of structure of interfacial water at charged surfaces: Using Molecular Dynamics (MD) simulations to study how surface charge and ions structure the interfacial water region at a SiO 2 surface. Collaboration with: Dr. Vincenzo Carnevale, Prof. Michael Klein, Institute of Computational Molecular Sciences, Temple University. Nanomaterials by design: On-pot synthesis and characterization (TEM, FTIR, Fluorescence spectroscopy, Raman spectroscopy) of semiconductor nanoparticles by shaped femtosecond laser ablation and identification of the photoluminescence contribution from the solvent laser irradiation product. Collaboration with the Dr. Robert Levis, Temple University. Non-linear optical studies of coherent control of surface reactions: Using Second Harmonic Generation to monitor stability and oxidation of semiconductor surfaces for real-time feedback in coherently controlled photoexcitation. Collaboration with Lockheed Martin Advanced Technology Laboratories. PROFESSIONAL APPOINTMENTS Post-Doctoral Fellow Chemical and Biomolecular Engineering, John Hopkins University August Present Research Assistant Summer July 2015 Chemistry Department, Temple University, Philadelphia, PA, USA Development of a new sum-frequency generation spectroscopy setup to study mineral/water interfaces to develop a fundamental understanding of structure and dynamics of interfacial water. Teaching Assistant Fall 2009, Spring 2010, Fall 2010, Spring 2012, Fall 2012 Chemistry Department, Temple University, Philadelphia, PA, USA o Physical Chemistry Lecture I (Chemistry 3301): Thermodynamics, phase equilibria, chemical equilibria, kinetic theory of gases, chemical kinetics, and equilibrium electrochemistry (Primary instructor: Dr. Jonathan Smith) o General Chemistry lab I (Chemistry 1033): Laboratory Instructor for entry-level Chemistry: Density determination, Acid-Base Titration, Empirical formula determination, Absorbance measurement, etc. o General Chemistry II Lab (Chemistry 1034): Laboratory instructor for second semester Chemistry: Use of Beer s law, Redox Titration, Complex-ion synthesis, Conductivity measurements, etc Associate Editor May 2008-June 2009 Cactus Communications Ltd, Mumbai , India. Scientific editing of research papers in the field of physical sciences, written by authors from nonnative-english speaking countries, and intended for submission to international, mainly American, scientific journals. S.Dewan 01/08/2016 2

3 PUBLICATIONS and PAPERS IN PREPARATION/SUBMITTED Shalaka Dewan, Vincenzo Carnevale, Arindam Bankura, Ali Eftekhari-Bafrooei, Giacomo Fiorin, Michael L. Klein, and Eric Borguet, Structure of Water at Charged Interfaces: A Molecular Dynamics Study, Langmuir, 2014, 30, Shalaka Dewan, Mohsen S. Yeganeh, and Eric Borguet, Experimental Correlation between Interfacial Water Structure and Mineral Reactivity, The Journal of Physical Chemistry Letters 2013, 4, Aashish Tuladhar, Shalaka Dewan, Eric Borguet, Spectroscopy and Ultrafast Vibrational Dynamics of Strongly Hydrogen Bonded OH Species at the α-al 2 O 3 (11-20)/H 2 O Interface, The Journal of Physical Chemistry C Article ASAP Shalaka Dewan, Johanan Odhner, Katharine Moore Tibette, Sepideh Afsari, Robert Levis and Eric Borguet, Elucidating the blue luminescence from alkyl-capped silicon nanoparticles synthesized by shaped femtosecond laser pulse ablation (submitted) Shalaka Dewan, Aashish Tuladhar, Eric Borguet, Surface-charge dependent sensitivity of ultrafast vibrational dynamics of interfacial water to cations at the silica/water interface (in preparation) Shalaka Dewan, Aashish Tuladhar, Eric Borguet, Specific-ion effect on ultrafast vibrational dynamics of interfacial water (in preparation) TECHNICAL SKILLS Laser Operation: Operation, troubleshooting and maintenance of following laser systems: o Ultrafast Regenerative Amplifiers: Coherent Libra HE (5 mj, 100 fs, 1 khz) Coherent Legend Elite Duo (12 mj, 40 fs, 1 khz) Quantronix Integra-e (3.5 mj, 100 fs, 1 KHz) o Picosecond Nd:YAG Regenerative Amplifier (EKSPLA PL2143, 50 mj, 10 Hz) o Diode pump laser (Verdi-Coherent) o Ultrafast Ti:Sapphire Oscillators (Mira and Mira-seed, Coherent) o Flashlamp YLF pump laser (Falcon-Quantronix) o Picosecond and Femtosecond IR Optical Parametric Amplifiers PG401-DFG, EKSPLA Fs-TOPAS, Light Conversion, TOPAS-prime, Light Conversion Fs-OPerA Solo, Coherent Detection systems: Operation and maintenance of triple grating monochromator/spectrograph and CCD (Princeton Instruments, Acton Research Corp., and Andor Optics) Instrumentation: o Raman spectroscopy and Microscopy, (Horiba LabRAM HR Evolution) o FTIR Spectrometer (Bruker Tensor 27), o Transmission Electron Microscope (JOEL JEM-1400), S.Dewan 01/08/2016 3

4 o Scanning Electron Microscopy (SEM), FEI Quanta o Fluorescence Spectrometry (PTI) o UV-Vis spectrometry Surface modification: Growth and characterization of silane SAMs on glass substrates, hydrogen termination of Si surfaces. Laser ablation for one-pot synthesis of luminescent silicon quantum dots Software: IgorPro, Matlab, Labview Molecular Dynamics simulations using NAMD software on UNIX platform PRESENTATIONS Invited Talk: Interfacial water structure: Key player in silica dissolution, Shalaka Dewan, Mohsen Yeganeh, Eric Borguet, July 26, 2013, ExxonMobil Research and Engineering Corp., Annandale, New Jersey, USA Invited Talk, Ultrafast sum-frequency generation (SFG) spectroscopy to investigate the role of ions in altering the interfacial water structure at silica surface Shalaka Dewan, April 10, 2015, Johsn Hopkins University, Dept. of Chemical and Biomolecular Engineering, Baltimore MD Oral Presentation Effect of Salt on Ordering of Water at Silica Surface as a Function of ph, Shalaka Dewan, Mohsen Yeganeh, Eric Borguet; 244 th National Meeting American Chemical Society, August 19-23, 2012, Philadelphia, PA, USA Oral Presentation Sensitivity of ultrafast vibrational dynamics of interfacial water to cations at silica/water interfaces, Shalaka Dewan, Aashish Tuladhar, and Eric Borguet; American Physics Society March Meeting, March 2-6, 2015, San Antonio, TX, USA Invited Talk: Role of salt in altering interfacial water structure using sum-frequency generation spectroscopy Shalaka Dewan, Chemistry After Dark Seminar, March 20, 2015, Department of Chemistry, Temple University, Philadelphia PA Poster Vibrational Spectroscopy and Dynamics of Water at Interfaces, Shalaka Dewan, Ali Efthekari-Bafrooei, and Eric Borguet; 2010 Gordon Research Conference on Vibrational Spectroscopy, August 1-6, 2010, University of New England, Biddeford, Maine, USA Poster How deep is the interface: Molecular dynamics study of interfacial water at charged surfaces Shalaka Dewan, Ali Eftekhari Bafrooie, Vincenzo Carnevale, Giacomo Fiorin, Michael L. Klein, and Eric Borguet, 244 th National Meeting American Chemical Society, August 19-23, 2012, Philadelphia, PA, USA Poster Interfacial water plays key role in silica dissolution, Shalaka Dewan, and Eric Borguet; 2012 Gordon Research Conference on Water, August 11-16, 2012, Holderness, New Hampshire, USA S.Dewan 01/08/2016 4

5 SERVICE / LEADERSHIP ROLES Lab Safety Manager, Borguet Group Labs August July 2015 Supervising and maintaining the EHRS governed safety laws in labs, updating Chemical Hygiene plan for the group, point-person for correspondence with EHRS during and after lab safety inspections. After School Mentor, STEM Achievement in Baltimore Elementary Schools (SABES) October present SABES is a National Science Foundation (NSF)-funded collaboration between Baltimore City Public Schools (City Schools) and Johns Hopkins University. I performed as a volunteer STEM mentor aiding 5 th grade students with assigned STEM activities. Team Leader, Non-Linear Optics Group, Borguet Lab 2011 July 2015 Mentorship of three graduate students and four undergraduate students working in lasers and non- linear optics, specifically, sum-frequency generation (SFG) spectroscopy. Organizer of Chemistry after Dark, Department of Chemistry, Temple University This is a monthly informal seminar series, given by senior graduate students for all graduate students in the department. As an organizer I help speakers present their Ph.D. research in a manner that appeals to students from all areas and levels of chemistry, maintain event webpage, and logistical coordination. S.Dewan 01/08/2016 5