Research work
Magnetic nanorobots
In 2009, he along with Peer Fischer demonstrated the use of glancing-angle deposition to fabricate magnetic helical nanorobots. [1] His group worked out the theoretical formulae to describe the dynamics of such nanorobots [2] and presented techniques for their independent control. [3]
In recent years his group has managed to demonstrate various applications of helical nanorobots including techniques to move in important biological environments, such as blood. [4] and as probes for sensing [5] the environment inside living cells. [6] [7]
Plasmonics and Metamaterials
Ambarish Ghosh and his group demonstrated a wafer scale technology to fabricate porous 3D plasmonic metamaterials which can be used over a wide range of wavelengths, including the visible. These metal-dielectric nanostructured films can be made in various geometries [8] [9] [10] and configurations. Very recently, they have demonstrated a novel technique to integrate plasmonic nanoparticles with graphene in a sandwich configuration, allowing them to achieve unprecedented electromagnetic field enhancement and photodetection sensitivity. [11] In 2019, his group showed the application of metal-dielectric hybrid nanorods in active opto-fluidic manipulation of sub-micron colloids.
Electron bubbles in Liquid Helium
The group led by Ambarish Ghosh demonstrated trapping [12] of multielectron bubbles in liquid helium-4, which can open up new avenues in the study of two-dimensional electron systems at high densities, and on curved surfaces. The same group also performed high speed imaging [13] of the "explosion" of an electron bubbles triggered by focused ultrasound.
