Optical Tweezers and Nanoscale Biological Machines

Micron-sized dielectric particles can be trapped and manipulated in a highly focused Laser beam. This "Optical tweezer" is a microscopic version of the tweezer that you would use to place an electronic chip delicately on a printed circuit board. It is also a tool of choice to measure the tiny pico-Newton forces generated by biological Nano-machines that power almost all living processes. Prof Roop Mallik will discuss the physics behind optical tweezers and the classic experiments that measure force from a single Nano machine in test-tube conditions.

Catalysis for Sustainability

Catalysis is one of the oldest branches in Chemistry. This field primarily deals with the speed of chemical reactions and ways of manipulating them. Right from living systems to large-scale production of fine chemicals like pharmaceuticals and plastics, the science and technology of catalysis plays a pivotal role. I will introduce the chemistry aspects of catalysis at a general level and proceed to discuss on the increasing relevance of this science in sustainability. I will draw a few examples from my research as well as others during the discussion.

A Low-Cost Non-explosive Synthesis of Graphene Oxide for Scalable Applications



In this talk starting from a pre-defined problem, how certain bottlenecks encountered resulted in the above work – where we demonstrated a low cost method to synthesis a carbon based material – Graphene oxide. The work demonstrated that high quality synthesis of graphene oxide can be achieved without expensive filtration methods for carbonaceous and metallic residues. I will also outline some of the practical applications of this material which we are working on at present.

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