Start
Nov 28, 2017 - 16:00
End
Nov 28, 2017 - 17:00
Venue
Room 230 Chemical Engg Dept
Event Type
Speaker
Dr. Abhinav Malasi StudyFox Luxembourg
Title
Symbiotic plasmonic nanoparticles
Abstract: Metal particles of the dimensions of the order of 1 to 100's of nanometers show unique properties that are not clearly evident in their bulk state. These nanoparticles are highly reactive and sensitive to the changes in the vicinity of the particle surface and hence find applications in the field of sensing of chemical and biological agents catalysis energy harvesting data storage and many more. By synthesizing bimetallic nanoparticles a single nanoparticle can show multifunctional characteristics. The focus of this presentation is to detail the synthesis of bimetal nanoparticles of silver and cobalt and how these bimetallic nanoparticle systems show some fascinating and interesting optical chemical and magnetic behaviors some of which fall into the category of symbiotic behavior. Symbiosis is the mutual sharing of resources between two individual organisms. These bimetal nanoparticles were synthesized using pulsed laser dewetting and nanosphere lithography. After which they were studied for their oxidation stability magneto-plasmonic effect plasmon quality factor and the radiative quantum efficiency. These results suggested that by synthesizing symbiotic bimetal nanoparticles the properties of individual metals could be significantly improved. The last part of the results will discuss how the symbiosis study of bimetals led to the discovery of a new class of thin film amorphous transparent semiconducting oxide. The semiconductor was made from a ternary oxide comprising of the metals Fe Tb and Dy. The combination of high visible light transparency high conductivity and extraordinarily high mobility makes this material a potential candidate for use in thin film transistor and transparent conductor applications and is a possible replacement for Indium-based materials.Bio: Abhinav received his dual degree for Bachelor of Technology and Master of Technology in Chemical Engineering from Indian Institute of Technology (IIT) Kanpur in the year 2008. After completing his Masters he worked in IIT Kanpur for two years as a research associate with Prof. Ashutosh Sharma. In the Fall of 2010 he joined the doctoral program in Department of Chemical and Biomolecular Engineering at University of Tennessee Knoxville. He pursued his Ph.D. under the supervision of Dr. Ramki Kalyanaraman and obtained his Ph.D. in 2016 and moved to Luxembourg where he works as a tutor with StudyFox.