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SUMMARY:Synthesis and applications of size selected metal\, alloy and core
 -shell nanoparticles
DTSTART:20150713T150000
DTSTAMP:20260427T213118Z
UID:4b9ed064e249798fa524851fdef6b54e91fafb7e875a410bf8eade42
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Bodh Mehta\, Indian Institue of Technology Delhi\nFor re
 alizing the size dependent properties of nanoparticles\, synthesis of nano
 particle having controllable size and narrow size distribution is one of t
 he important prerequisites.\nIn this talk\, synthesis and applications of 
 size selected nanoparticles prepared by an integrated nanoparticle synthes
 is technique will be described. The synthesis set up has been developed by
  an integration a gas phase synthesis with the nanoparticle size measureme
 nt instrumentation. It comprises of a spark generator for forming metal ag
 glomerates\, a radioactive charger for charging\, differential mobility an
 alyzer for selecting the size and in-flight sintering for converting the a
 gglomerates to compact\, crystalline and spherical nano particles. It is p
 ossible to measure average size and number concentration on-line at differ
 ent stages of nanoparticle growth. The integrated gas phase deposition met
 hod has been used to grow Pd\, Cu\, Ag\, Pd-Cu\, Pd-Ag and Si-Sn alloy nan
 oparticles.\nA novel modification in the synthesis set up has been carried
  out for growing metal-graphene core-shell nanoparticles. Depending upon t
 he solid solubility of carbon in the metal and relative surface energy val
 ues\, thickness and nature of the graphene shell can be controlled. Utiliz
 ing the ability of controlling the nanoparticle size and composition\, the
  effect of alloying on the Pd 4d valence band position and thus Pd-H inter
 actions has been investigated in Pd alloy nanoparticles. Optical and elect
 ronic properties of CdSe and Si-Sn nanoparticles dispersed in thin film ma
 trix are being investigated for new generation solar cell devices.\nBio: B
 odh Raj Mehta is currently Professor of Physics and Schlumberger Chair Pro
 fessor of Semiconductor Physics at Indian Institute of Technology Delhi\, 
 New Delhi\, India. He did his M.Sc. in Physics from Punjabi University Pat
 iala\, M. Tech in Solid State Materials and Ph. D in Physics from IIT Delh
 i. He has worked as post-doctoral fellow at University of British Columbia
 \, Canada\; guest scientist at University of Saarbrucken\, Germany\; and g
 uest professor at University of Duisburg\, Germany. His major research int
 erests are\; Science and Technology of Thin Films and Nanostructured Mater
 ials for Solar Cell\, Resistive Memory\, Thermoelectric and Gas Sensor Dev
 ices. He is the recipient of MRSI Medal (Material Research Society of Indi
 a\, 2002)\, DAAD Fellowship (Deutscher Akademischer Austausch Dienst\, 200
 0) and Marie Curie International Fellowship (European Commission\, 2006). 
 He is on the Editorial Board of Journal of Nanoscience and Nanotechnology 
 and has about 160 journal publications. He is the Coordinator of the ‘Un
 it on Nanoscience’ (Nanomission) at IIT Delhi\; Co-coordinator of Nano R
 esearch Facility at IIT Delhi.  One of his projects ‘NanoSwitch’ has 
 been selected by European Commission as a ‘Success Story’ project.
LOCATION:BM 1130 https://plan.epfl.ch/?room==BM%201130
STATUS:CONFIRMED
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