Faculty at School of Engineering

Ashish Kumar Thokchom

Ashish Kumar Thokchom

Associate Professor

School of Engineering


Contact Information

  • Microfluidics
  • Interfacial Phenomena
  • Micro PIV
  • Inkjet Printing Technique
  • Flexible Electrodes
  • Photonic Crystals
  • Micro–Nanofabrication
  • Droplet Impact

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  • Ph.D., Chemical Engineering, IIT Guwahati
  • M.Tech., Chemical Engineering, NITK, Surathkal
  • B.Tech., Chemical Engineering, TKMCE, Kollam (Kerala University)

  • 2025 – Present: Associate Professor
  • 2019 – 2025: Assistant Professor, SNIOE (DTU)
  • 2018 – 2019: Postdoctoral Professor, nBFSL, Korea University, South Korea
  • 2015 – 2018: Postdoctoral Fellow, µFNM Lab, UNIST, South Korea

Select Publications

  • G. Hirekar, S. Shin, A. Tiwari, V. Raju, S. Singh, Y. B. Bang, S. J. Lee, Ashish Kumar Thokchom*. Suppression of the coffee-ring effect for photonic structures based on the shape of particles. ACS Applied Optical Materials, 2025.
  • A. Tiwari, S. J. Lee and Ashish Kumar Thokchom*. Surfactant-based interface capture towards the development of 2D-printed photonic structures. Materials Horizons, 2025.
  • A. Tiwari, S. Shin, S. J. Lee, D. K. Grag and Ashish Kumar Thokchom*. Characterizing the microparticles deposition structure and its photonic nature in surfactant-laden evaporating colloidal sessile droplets. Langmuir, 2024.
  • A. Tiwari, S. Shin, S. J. Lee and Ashish Kumar Thokchom*. Understanding the formation of particle bands and fingering patterns during evaporation of a colloidal sessile droplet. Colloid and Interface Science Communications, 2023.

Journals

  • Ashish Kumar Thokchom and S. Shin. Dynamical Clustering and band formation of particles in a Marangoni vortexing droplet. Langmuir, 2019, 35(27), 8977–8983.
  • Q. Zhou, J. G. Park, R. Nie, Ashish Kumar Thokchom, D. Ha, J. Pan, S. I. Seok, and T. Kim. Nanochannel-Assisted Perovskite Nanowires: From Growth Mechanisms to Photodetector Applications. ACS Nano, 2018, 12(8), 8406–8414.
  • Q. Zhou, Jun Gyu Park, K. N. Kim, Ashish Kumar Thokchom, J. Bae, J. M. Baik, Taesung Kim. Transparent-Flexible-Multimodal Triboelectric Nanogenerators for Mechanical Energy Harvesting and Self-Powered Sensor Applications. Nano Energy, 2018, 48, 471–480.
  • H. K. Chang, G. T. Chang, Ashish Kumar Thokchom, T. Kim and J. Park. Ultra-fast responsive colloidal–polymer composite-based volatile organic compounds (VOC) sensor using nanoscale easy tear process. Scientific Reports, 2018, 8, 5291.
  • Ashish Kumar Thokchom, Q. Zhou, D. J. Kim, D. Ha and T. Kim. Characterizing self-assembly and deposition behavior of nanoparticles in inkjet-printed evaporating droplets. Sensors and Actuators B: Chemical, 2017, 252, 1063–1070.
  • D. J. Kim, D. Ha, Q. Zhou, Ashish Kumar Thokchom, J. Lim, J. Lee and T. Kim. Cracking-assisted Micro-/Nanofluidic Fabrication Platform for Silver Nanobelt Arrays and Nanosensors. Nanoscale, 2017, 9, 9622–9630.
  • Q. Zhou, Ashish Kumar Thokchom, D. J. Kim and T. Kim. Inkjet-printed Ag Micro-/Nanostructures on Cu foil for In-situ Preconcentration and Surface Enhanced Raman Scattering. Sensors and Actuators: B-Chemicals, 2017, 243, 176–183.
  • Ashish Kumar Thokchom, S. K. Majumder and A. Singh. Internal fluid motion and particle transport in externally heated sessile droplets. AIChE, 2016, 62, 1308–1321.
  • Ashish Kumar Thokchom, R. Swaminathan, and A. Singh. Fluid flow and particle dynamics inside an evaporating droplet containing live bacteria displaying chemotaxis. Langmuir, 2014, 30, 12144–12153.
  • Ashish Kumar Thokchom, A. Gupta, P. J. Jaijus and A. Singh. Analysis of fluid flow and particle transport in evaporating droplets exposed to infrared heating. International Journal of Heat and Mass Transfer, 2014, 68, 67–77.
  • B. J. Medhi, Ashish Kumar Thokchom, Anugrah Singh and Sadhan Mahapatra. Experimental and computational study on flow over stepped spillway. JMST, 2019, 33, 2101–2112.

Invited Talk: Bio-inspired structural colors: Beyond self-assembly of particles. Soft Matter Meet, 14 – 16 October 2024, Shiv Nadar University.

  • Development of Fluidic Manifold. PI - Ashish Kumar Thokchom, HCL. 7.8 Lakhs (Four Months)

  • G. Hirekar, R. Mitra and Ashish Kumar Thokchom. Development of iridescent photonic structures via 2-D printing. 14th International Colloids Conference, 9–12 June 2025, Sitges, Barcelona, Spain.
  • Invited Talk: Bio-inspired structural colors: Beyond self-assembly of particles. Soft Matter Meet, 14–16 October 2024, Shiv Nadar University.
  • Appurva Tiwari, S. J. Lee, S. Shin and Ashish Kumar Thokchom. Development of iridescent photonic structures via 2-D printing. 13th International Colloids Conference, 9–12 June 2024, Sitges, Barcelona, Spain.
  • Appurva Tiwari, S. J. Lee, S. Shin and Ashish Kumar Thokchom. Multi-ring formation during evaporation of surfactant-laden sessile droplets. 13th International Colloids Conference, 9–12 June 2024, Sitges, Barcelona, Spain.
  • Tiwari, G. Hirekar, and Ashish Kumar Thokchom. Bioinspired structures via self-assembly of colloidal particles. CompFlu–2023, 18–20 December 2023, IIT Madras, India.
  • Ashish Kumar Thokchom and S. Shin. Coffee-ring effect associated with dynamical clustering and band formation of particles in a droplet. Annual European Rheology Conference 2022 (AERC 2022), Spain.
  • A. Tiwari, S. J. Lee, S. Shin and Ashish Kumar Thokchom. Banded µ-Marangoni Vortex inside the Sessile Evaporating Droplet. Droplet 2021, TU Darmstadt, Germany.
  • Tiwari, A. Singh and Ashish Kumar Thokchom. Manipulation of Marangoni convection of a sessile droplet. Droplet 2021, TU Darmstadt, Germany.

Editorial Board Members of Nature Scientific Report

Langmuir, Langmuir, Journal of Materials Science: Materials in Engineering, Heat and Mass Transfer, International Journal for Numerical Methods in Fluids, and Discover Applied Sciences.