Harshad Pathak


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Arbetar vid Fysikum
Telefon 08-553 787 00
Besöksadress Roslagstullsbacken 21
Rum D6:3012
Postadress Fysikum 106 91 Stockholm

Om mig

Experienced in nucleation, aerosol science and process development. You can view my publication list towards the end of this content.



Doctor of Philosophy (Ph.D.), Chemical Engineering,

December 2013                                                        

The Ohio State University (OSU), Columbus, Ohio

Research Adviser: Dr. Barbara Wyslouzil

Ph.D. Dissertation: “Nucleation and droplet growth during co-condensation of nonane and D2O in a supersonic nozzle”

Link to my dissertation on the right of this webpage

(GPA – 3.80/4.00)

Master of Science (M.S.), Chemical Engineering

June 2011                                                                         

Bachelor of Chemical Engineering

June 2008

Institute of Chemical Technology (ICT), Mumbai, India                       



  • Experimental and Analytical: Absorption spectroscopy, small-angle X-ray scattering (SAXS), wide-angle X-ray scattering (WAXS), molecular dynamics simulations, design and analysis of experiments.
  • Software and Programming: MATLAB, Fortran, Autodesk Inventor, JMP (statistical analysis), IGORPro, FLUENT.



Intern, Aquapharm Chemicals Pvt. Ltd., Pune, India

May – June 2007

  • Designed a shell-tube heat exchanger for condensing xylene vapors.
  • Studied the safety measures and environmental norms of the chemical engineering processes of the plant.

Process/ Product Engineer, Humic Growth Solutions, Jacksonville, FL

January 2014 – January 2015

  • Developed quality control procedures with minimum resources and set up a wet chemistry lab to test the humic content (active ingredient) of our product.
  • Ensured proper scale-up of fertilizers from lab-scale to industrial scale and solved real-time manufacturing problems.
  • Designed and analyzed lab experiments to write a technical report which was used to file for a non-provisional patent.
  • Worked towards identifying problems and developing procedures to manage the plant professionally.


  • Member of Sigma Xi, The Scientific Research Society (2013 onwards).
  • Travel grant from the National Science Foundation to attend the 19th International Conference on Nucleation and Atmospheric Aerosols in Fort Collins, Colorado (June 2013).
  • Outstanding Graduate Award for Academic Achievement by the William Lowrie Department of Chemical Engineering, Ohio State University (April 2013).
  • Travel grant from the American Association of Aerosol Research (AAAR) to attend the 31st Annual AAAR Conference in Minneapolis, MN (October 2012).
  • University Fellowship (tuition waiver and monthly stipend) from OSU Graduate School on the basis of outstanding academic record (September 2008 – August 2009).
  • Winner in ‘Industry-defined Problem’ –in the Annual Chemical Engineering Symposium held at Indian Institute of Technology (IIT), Mumbai (March 2007).


  • Volunteer for Association for India’s Development (AID) fundraisers (September 2008 – December 2012).
  • Head of Safety at the Aerosol Research Laboratory at OSU. Responsible for the classification and disposal of used chemicals from the lab and participation in meetings to improve safety in the Chemical Engineering Department (June 2011 – April 2013).
  • Member of the Core Organizing Committee – First Annual Graduate Research Symposium of OSU Chemical Engineering Department (February – August 2012).
  • Chief Financial Officer for ‘MANZAR’ – first inter-college cultural event at ICT. Responsible for managing a budget (~$40,000), allocating resources and maintaining account books (January – March 2007).
  • Treasurer for ‘PRODIGY’ – a national-level technical symposium at ICT. Responsible for managing a budget (~$24,000) and interacting with corporate sponsors (January – March 2008).



Graduate Teaching Assistant, The Ohio State University

September 2009 –December 2012    

  • Freshman Engineering: Trained students to write programs in MATLAB and utilize Autodesk Inventor for engineering graphics; graded homework and exams, and conducted office hours.   
  • Air Pollution (ChBE 771): Delivered lectures to a class of about 30 students for three academic terms; graded homework and exams, and conducted office hours and tutorial sessions.              


Post Doctoral Researcher, Stockholm University

March 2015 – present

  • Developing an experimental set-up to measure droplet temperatures and specific heat capacities of micrometer sized supercooled water droplets.


Graduate Research Associate, The Ohio State University

September 2008 – December 2013

  • Developed a novel analytical technique by combining Beer-Lamberts’ law with linear regression in MATLAB to study the nanodroplets of water, nonane and their mixtures quantitatively through Fourier transform infrared (FTIR) spectroscopy.
  • Integrated pressure profile measurements with FTIR and SAXS by modifying a set of differential equations in Fortran to accurately calculate the experimental parameters like temperature and density.
  • Worked in a cross-functional team to coordinate and analyze SAXS experiments at the Advanced Photon Source (APS) in Argonne National Laboratory (ANL).
  • Designed and constructed an experimental set-up to successfully study ice and frozen alkane nanodroplets using ultrafast X-ray laser at SLAC National Accelerator Laboratory with help from scientists from SLAC.


Summer School Participant, Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL)

June 2010

  • Among 65 selected candidates (nationwide competition) for the “12th National School on Neutron and X-ray Scattering.”
  • Studied the principles of scattering theory and the characteristics of X-ray and neutron sources.
  • Conducted four short experiments at ANL’s APS and ORNL’s spallation neutron source and high-flux isotope reactor facilities.


Research Project, Institute of Chemical Technology

February – May 2008

  • Designed a plant to manufacture 1 tonne per day of potato protein from a potato starch waste stream.
  • Performed detailed calculations for chromatography and ultrafiltration, equipment design and economic feasibility study.


  • Harshad Pathak, Gerald Wilemski, and Barbara Wyslouzil. The microstructure of nonane-water nanodroplets, Journal of Chemical Physics 2014, 140, 224318.
  • Harshad Pathak, Judith Wölk, Reinhard Strey and Barbara Wyslouzil. Co-condensation of Nonane and D2O in a supersonic nozzle, Journal of Chemical Physics 2014, 140, 034304.
  • Harshad Pathak, Kelley Mullick, Barbara Wyslouzil, and Shinobu Tanimura. Nonisothermal  Droplet Growth in the Free Molecular Regime, Aerosol Science and Technology 2013, 47, 1310.
  • Shinobu Tanimura, Harshad Pathak, and Barbara Wyslouzil. Binary nucleation rates for ethanol/water mixtures in supersonic Laval nozzles: Analyses by the first and second nucleation theorems, Journal of Chemical Physics 2013, 139, 174311.
  • Ashutosh Bhabhe, Harshad Pathak, and Barbara Wyslouzil. Freezing of heavy water (D2O) nanodroplets, Journal of Physical Chemistry A 2013, 117, 5472.
  • Viraj Modak, Harshad Pathak, Mitchell Thayer, Sherwin Singer, and Barbara Wyslouzil. Experimental evidence of surface freezing in supercooled n-alkane nanodroplets, Physical Chemistry Chemical Physics 2013, 15, 6783; featured in Chemistry World- a magazine by the Royal Society of Chemistry.
  • Alexandra Manka, Harshad Pathak, Shinobu Tanimura, Judith Wölk, Reinhard Strey, and Barbara Wyslouzil. Freezing water in no-man’s land. Physical Chemistry Chemical Physics 2012, 14, 4505.



  • Harshad Pathak, Judith Wölk, Reinhard Strey and Barbara Wyslouzil, 19th International Conference on Nucleation and Atmospheric Aerosols, Co-condensation of Nonane and D2O in a Supersonic Nozzle, Fort Collins, Colorado (June 2013).
  • Harshad Pathak, Barbara Wyslouzil, Abdalla Obeidat and Gerald Wilemski, 19th International Conference on Nucleation and Atmospheric Aerosols, The Structure of Aqueous-Alkane Nanodroplets, Fort Collins, Colorado (June 2013).
  • Harshad Pathak, Kelley Mullick, Barbara Wyslouzil and Shinobu Tanimura, 31st Annual American Association of Aerosol Research (AAAR)  Conference, Nonane and D2O non-equilibrium droplet growth in the free molecular regime, Minneapolis, Minnesota (October 2012).
  • Harshad Pathak, Barbara Wyslouzil, Judith Wölk, Dirk Bergmann and Reinhard Strey, 85th American Chemical Society (ACS) Colloids and Surface Science Symposium, Nucleation of Nonane and D2O in a supersonic nozzle, Montreal, Canada  (June 2011).
  • Harshad Pathak, Dirk Bergmann, Barbara Wyslouzil, Judith Wölk and Reinhard Strey, 29th Annual AAAR  Conference, Nonane and D2O droplet growth in a supersonic nozzle, Portland, Oregon (October 2010).

Senast uppdaterad: 16 maj 2017

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