Samya Sen

Title Ph.D. student
Department Mechanical Engineering
Office 4429 MEL

B.Tech. Mechanical Engineering, Indian Institute of Technology Kharagpur (2017)


Samya comes from Kolkata, India. He completed his Bachelors from Indian Institute of Technology (IIT) Kharagpur in Mechanical Engineering. He joined the Ewoldt Research Group in 2017 as a direct Ph.D. student.

Research Interests

Samya’s research interests include, but are not limited to, experimental study of droplet impact dynamics of thixotropic yield-stress fluids on thin films and coatings and high-speed imaging to capture the same, with applications aimed at enhanced fire suppression, spray and jet printing/painting, among others. Diversification in the work includes partial design, modeling and characterization of extensible yield-stress fluids (colloidal suspensions with high MW polymer additives) towards targeted applications, direct-write 3D printing being a major one. Research also often involves rheological characterization, mathematical modeling and developing low-dimensional descriptions of thixo- and elasto-viscoplastic fluids.

He is also actively involved in maintaining and further developing the Rheology Zoo. His hobbies include reading, sketching, gaming, and takes a fanatical amount of interest in the sport of football (US: soccer).

More information can be found in the detailed  CV, short résumé, Google Scholar profile, or by direct contact through email.

Selected Publications

  1. S. Sen, A. G. Morales, and R. H. Ewoldt, “Viscoplastic drop impact on thin films,” Journal of Fluid Mechanics 891, A27 (2020). DOI link
  2. S. Sen, A. G. Morales, and R. H. Ewoldt, “Thixotropy in viscoplastic drop impact on thin films,” Physical Review Fluids 6, 043301 (2021). DOI link arXiv

Sneak-Peeks into research: high-speed videos

Even if the science operating in the background may be convoluted and challenging to capture, these cool videos show the lighter side of life: fascinating slow-mo renditions of a fluid’s complicated behavior over extremely small timescales (of the order of micro-seconds).

Note the differences in behavior: only changing the thickness of the coating creates a vastly varying array of different fluid impacts for otherwise constant parameters.