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Hire Dr. Sumit M.

France

USD 50 /hr

Researcher Engineer | Small-angle X-ray and Neutron Scattering | Soft Matter | Physical Chemistry | Physics

Profile Summary

My research work deals with understanding of the structures and interactions in soft matter and energy materials majorly using scattering techniques (SANS, SAXS, DLS) for both basic research and industrial applications. In the energy materials research, I have been working on different systems like (i) Structural characterization (SAXS/SANS) of hybrid electrolytes and nanocomposites in PEO matrix for lithium metal battery applications [Polymers (Accepted) 2022, Chemistry of Materials 34, 6944 (2022), Macromolecules (Under Preparation, 2022)]. (ii) An original in-situ SAXS-DLS-Osmotic stress setup is made and demonstrated for the structure-dynamics study of densification of Boehmite suspensions for γ-Alumina catalyst in Petroleum Industry (Under preparation) (iii) Redox active polymer characterization for organic battery applications. In the Soft matter Research (i) Desalting/Salting pathway is used to form metastable aggregates with tuneable morphologies and lifetimes in a non-equilibrium nanoparticle-polyelectrolyte system [Soft Matter 17, 8496 (2021)]. (ii) Protein unfolding and refolding is studied using selective surfactants [Phys. Rev. E 92, 032713 (2015)] (iii) Structural study of multi-component nanoparticle-protein-surfactant system [Langmuir 30, 9941 (2014), Langmuir 29, 11290 (2013)]. I have used Xenocs-Xeuss 2.0 at LLB, CEA-Saclay, France and Kartky camera based Saxsess-Anton Paar instrument at HZB, Berlin. I have experience in user support and demonstration for our SANS facility at Dhruva reactor, BARC, Mumbai, India during my PhD. The experience in SAXS instrumentation includes the beam alignment of Saxess, Anton Paar instrument at HZB, Berlin. The work have gained 10 Journal Publications, 7 Conference proceedings and invited/presented in 10+ oral communications, 20+ Poster presentations in different countries (France, India, Germany, Sweden, Brazil, Indonesia). Keywords: Polymer Nanocomposites, Soft Matter, Self-assembly, Small-angle Scattering (SANS, SAXS), Light Scattering, Polymer Electrolyte Characterization, Scientific Programming (C++, Python, FORTRAN)

Subject Matter Expertise

• ☆ Materials Science & Engineering
• ☆ Nanotechnology & Nanomaterials
• ☆ Physical Chemistry
• ☆ Composite Materials
• ☆ X-Ray Technology

Services

• Writing
• Research
• Consulting

Writing Technical Writing

Research Fact Checking, Scientific and Technical Research

Consulting Scientific and Technical Consulting

Work Experience

Research Engineer

CEA Saclay

April 2021 - Present

Postdoctoral Researcher/Visiting Scientist

IFP Energies Nouvelles

June 2019 - March 2021

Postdoctoral Researcher

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH

February 2018 - November 2018

Postdoctoral Researcher

CEA Saclay

November 2016 - January 2018

PhD Student

Bhabha Atomic Research Centre

May 2011 - September 2016

Education

Ph.D. (Physics)

Bhabha Atomic Research Centre

July 2011 - September 2016

Certifications

• National Eligibility Test for Lectureship

  University grant commission, India

  December 2012 - Present

Publications

JOURNAL ARTICLE

Sumit Mehan, Sébastien Issa, Roselyne Jeanne-Brou, Didier Devaux, Fabrice Cousin, Didier Gigmes, Renaud Bouchet, Trang N. T. Phan (2022). New Crosslinked Single-Ion Silica-PEO Hybrid Electrolytes . Polymers.

Sumit Mehan, Thi Khanh Ly Nguyen, Trang N. T. Phan, Fabrice Cousin, Didier Devaux, Fabio Ziarelli, Stéphane Viel, Didier Gigmes, Priscillia Soudant, Renaud Bouchet (2022). Polyhedral Oligomeric Silsesquioxane-Based Macroanions to Level Up the Li+ Transport Number of Electrolytes for Lithium Batteries . Chemistry of Materials.

Sumit Mehan and Laure Herrmann and Jacques Jestin and Jean-Paul Chapel and Jean-Francois Berret and Fabrice Cousin(2021). The desalting/salting pathway: a route to form metastable aggregates with tuneable morphologies and lifetimes . Soft Matter. Royal Society of Chemistry ({RSC})

Sumit Mehan, Laure Herrmann, Jean-Paul Chapel, Jacques Jestin, Jean-Francois Berret, Fabrice Cousin(2021). The desalting/salting pathway: a route to form metastable aggregates with tuneable morphologies and lifetimes . Soft Matter. Royal Society of Chemistry ({RSC})

Das, K., Kundu, S., Mehan, S., Aswal, V.K.(2016). Modified interactions among globular proteins below isoelectric point in the presence of mono-, di- and tri-valent ions: A small angle neutron scattering study . Chemical Physics Letters. 645. p. 127-132.

Kundu, S., Das, K., Mehan, S., Aswal, V.K., Kohlbrecher, J.(2015). Structure and interaction among protein and nanoparticle mixture in solution: Effect of temperature . Chemical Physics Letters. 641. p. 68-73.

Kundu, S., Mehan, S., Aswal, V.K., Callow, P.(2015). Studies on interactions among lysozyme proteins in solution: Effects of concentration, pD, temperature and monovalent ions . Chemical Physics Letters. 622. p. 23-27.

Mehan, S., Aswal, V.K., Kohlbrecher, J.(2015). Tuning of protein-surfactant interaction to modify the resultant structure . Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 92. (3).

Mehan, S., Aswal, V.K., Kohlbrecher, J.(2014). Cationic versus anionic surfactant in tuning the structure and interaction of nanoparticle, protein, and surfactant complexes . Langmuir. 30. (33). p. 9941-9950.

Das, K., Kundu, S., Mehan, S., Aswal, V.K.(2014). Modification of interactions among proteins with the lowering of solution pD toward the isoelectric point in presence of different valent ions . Chemical Physics Letters. 610-611. p. 405-410.

Mehan, S., Chinchalikar, A.J., Kumar, S., Aswal, V.K., Schweins, R.(2013). Small-angle neutron scattering study of structure and interaction of nanoparticle, protein, and surfactant complexes . Langmuir. 29. (36). p. 11290-11299.

CONFERENCE PAPER

Kumar, S., Piplani, P., Mehan, S., Aswal, V.K.(2017). Probing structural evolution in heat induced protein gelation by scattering techniques . AIP Conference Proceedings. 1832.

Mehan, S., Kumar, S., Aswal, V.K., Schweins, R.(2016). Modifications in structure and interaction of nanoparticle-protein-surfactant complexes in electrolyte solution . AIP Conference Proceedings. 1731.

Kumar, S., Mehan, S., Aswal, V.K., Schwein, R.(2016). Observation of dynamic equilibrium cluster phase in nanoparticle-polymer system . AIP Conference Proceedings. 1731.

Mehan, S., Aswal, V.K., Kohlbrecher, J.(2015). Probing nanoparticle effect in protein-surfactant complexes . AIP Conference Proceedings. 1665.

Mehan, S., Aswal, V.K., Kohlbrecher, J.(2015). Structural study of surfactant-dependent interaction with protein . AIP Conference Proceedings. 1665.

Mehan, S., Kumar, S., Aswal, V.K.(2014). Observation of two different fractal structures in nanoparticle, protein and surfactant complexes . AIP Conference Proceedings. 1591. p. 167-169.