Research Topics

Additive Nanomanufacturing

A car manufacturing plant involves assembling components manufactured elsewhere. That way an efficient engine made in Japan, a transmission made in Germany, tyres made in Korea, etc. can be assembled at a plant in Italy. Thus, the individual expertise of each component manufacturer is leveraged to make a final product that is of high quality. This assembly involves only skilled human intervention, with most of the automated processes handled by robots.

In our group, we hope to replicate such an assembly process at the nanoscale. This can be accomplished using nanomechanical probes. This is a pretty interesting process as it involves physics of surfaces (tribology), advanced surface engineering processes, as well as chemical process control at the interface.

Optoelectronics of Phase Change Materials

Phase Change Materials are those that can exist in two quasi-stable solid states around room temperature. Such materials are commonly employed in a range of applications from heat storage to data storage. In our group we pursue novel applications of a class of Chalcogenide phase change materials especially in optoelectronic modulation, emerging brain-inspired computing, artifical retinas and all-photonic memories.

Our group discovered an optoelectronic framework based on these materials, and this effort has set the stage for several interesting experiments using these materials. For example - can photonic devices using integrated optics concepts replace future electronic chips? Could we compute optically using non von Neumann techniques? These are the extremely interesting questions that we are interested in.

Nanoelectromechanical Systems (NEMS)

Nanoelectromechanical systems (NEMS) are an interesting set of devices that can have many applications involving mass and force sensing as well as high quality factor tunable resonators. We pursue the engineering of such devices utilizing novel materials including Graphene and Chalcogenides.


Key Areas in NEMS:

  1. Combining graphene and chalcogenides for RF tunable resonators

  2. Studying and probing extreme nonlinearity in Room Temperature NEMS

Key Areas in Nanomanufacturing:

  1. High resolution Printing Techniques (200 nm and below)

  2. Ultrafast self-assembly of nanoparticles

  3. Combination techniques to assembles real devices

  4. Novel techniques such as 1-5 nm nanogap devices and device Physics.

Key Areas in Optoelectronics:

  1. Solid-State Reflective Displays or SRD (Our Invention)

  2. Holographic projection using ultra-high resolution microdisplays

  3. All-Photonic Memories

  4. Integrated optics-based non von Neumann Computing paradigms

Nanometrology

Metrology is key to making and testing our devices, and we maintain a key interest in developing these techniques to help with all our goals.

Key Areas in Nanometrology:

  1. In-liquid charge detection using DHKPM

  2. Ultra high current (milliamps) probing at the nanometre length scales to test high electric field streghth effects in novel materials

  3. High resolution imaging capability using conductive AFM

© 2011-17 Bhaskaran lab, University of Oxford