Figure: Billions of nanopropellers on a wafer

Research in our group is focused on three very interesting nanoscale systems, ranging from nanometer sized bubbles containing single electrons in superfluid helium to a three dimensional arrays of plasmonic nanoparticles, and helical nanostructures that are magnetically actuated to move in fluid and gel-like environments. The scientific goals of these different projects are described in more detail in their respective pages.

Nanophotonics & Quantum Sensing : Harnessing plasmonic interactions in nanoscale systems for quantum technologies.

Nanorobotics : Studying and engineering collective motion at the nanoscale in (bio)-fluidic environments.

Quantum Fluids : Micron and nano sized bubbles containing single/many electrons in liquid helium.

Representative publications:

1. All optical dynamic nanomanipulation with active colloidal tweezers, Souvik Ghosh and Ambarish Ghosh, Nature Communications, 10, 1, 4191, 2019.
2. Manoeuvrability of Magnetic Nanomotors Inside Living Cells, Malay Pal, Neha Somalwar, Anumeha Singh, Ramray Bhat, Sandeep M. Eswarappa, Deepak K. Saini, and Ambarish Ghosh, Advanced Materials, 30, 1800429, 2018.
3. Ultrahigh Field Enhancement and Photoresponse in Atomically Separated Arrays of Plasmonic Dimers, Debadrita Paria, K. Roy, Johnson H. Singh, Shishir Kumar, Srinivasan Raghavan, Arindam Ghosh and Ambarish Ghosh, Advanced Materials, 27 (10), 1751-1758,
4. Studying Electrons on Curved Surfaces by Trapping and Manipulating Multielectron Bubbles in Liquid Helium, Vaisakh Vadakkumbatt, Emil M. Joseph, Anustuv Pal & Ambarish Ghosh, Nature Communications 5, 4571, 2014
5. Controlled Propulsion of Artificial Magnetic Nanostructured Propellers, Ambarish Ghosh and Peer Fischer, Nano Letters 9 (6), 2243 (2009).