Category: News

Bishnu Tiwari Research

Bishnu Tiwari
Bishnu Tiwari working on the Raman spectroscopy system for nanomaterials characterization in Prof. Yap's Spectroscopy Lab.

Bishnu Tiwari is a graduate student in the Engineering Physics program at Michigan Technological University. He has been working with Professor Yoke Khin Yap since the beginning of 2012. Professor Yap’s group is investigating the fundamentals of synthesis, characterization and applications (in electronics and the biological sector) of novel nanomaterials such as carbon nanotubes (CNTs), boron nitride nanotubes (BNNTs), boron nitride nano sheets, graphene, and B-C-N nanostructures, as well as in developing the quantum dot nano devices. The fabrication of the nanomaterials is done by the techniques of pulsed laser vapor deposition (PLD), chemical vapor deposition (CVD), and so on. Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), UV-visible measurement of the sample, and scanning electron microscopy (SEM) are the techniques we utilize for characterization of materials.

Tiwari is also interested in the applications of nanomaterials in biological sectors. The group has recently started a project to test the toxicity of various kinds of nanomaterials in HeLa Cells, in collaboration with Dr. Caryn Heldt’s group in the Department of Chemical Engineering. The purpose of this experiment is to understand the nature of conflicting results regarding the toxicity of nanomaterials which are being considered as prospective materials for drug delivery.

Neutron and Raman spectroscopy studies of the quantum dynamics of hydrogen molecules in simple and binary clathrate-hydrates

Lorenzo UliviPhysics Colloquium
Michigan Technological University
Thursday, October 24, 2013
4:00 pm
Room 139 Fisher Hall
Neutron and Raman spectroscopy studies of the quantum dynamics of hydrogen molecules in simple and binary clathrate-hydrates
Dr. Lorenzo Ulivi
CNR – Consiglio Nazionale delle Ricerche
Istituto dei Sistemi Complessi, Sez. Firenze
Sesto Fiorentino, ITALY

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Transistors Without Semiconductors

CNMS User Newsletter
CNMS User Newsletter

Recent work published by Professor Yoke Khin Yap (Physics) on transistors without semiconductors has gained attention at the Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National Laboratory (ORNL). Yap’s work “Room Temperature Tunneling Behaviors of Boron Nitride Nanotubes Functionalized with Gold Quantum Dots,” first appeared in CNMS Research Highlights, and then later in the September issue of the CNMS User Newsletter.

This work is now being highlighted by Dr. Sean Smith, Director of CNMS, during his overview talk in the Triennial Review of CNMS. The triennial review is being held on September 24-26, 2013 at CNMS as attended by the review team of the U.S. Department of Energy, the CNMS Advisory Committee Review Panel, and scientists in CNMS.

On September 25, Professor Yap presented an invited talk entitled “Transistors without semiconductors: tunneling behavior of functional boron nitride nanotubes” during the review. The highlights are related to a Yap article recently published in Volume 25, Issue 33/2013, pages 4544-4548 of Advanced Materials (http://onlinelibrary.wiley.com/doi/10.1002/adma.201301339/abstract).

Yap’s coauthors include Professor John Jaszczak, research scientist Dongyan Zhang, postdoctoral researchers Chee Huei Lee and Jiesheng Wang, and graduate students Madhusudan A. Savaikar, Boyi Hao and Douglas Banyai of Michigan Tech; Shengyong Qin, Kendal W. Clark and An-Ping Li of the Center for Nanophase Materials Sciences at ORNL; and Juan-Carlos Idrobo of the Materials Science and Technology Division of ORNL.

Debasis Datta Inducted into CSA Academy 2013

Dr. Debasis Datta was inducted into Michigan Technological University’s Academy of Sciences and Arts on September 13, 2013. Datta graduated with a PhD in Physics from Michigan Technological University in 1994. His research work at Tech resulted in ten publications in American Physical Review. Following the completion of his postdoctoral work, he started his career in Information Technology in 1996 as a software engineer in the IT services industry. During his 16 year IT career, Debasis worked at DaimlerChrysler, PeopleSoft, Oracle and General Motors Corporation where he is currently employed.

Read more from the Dean’s Comments at the 2013 induction ceremony.

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Debasis Datta at CSA Academy
Ravi Pandey, Devashree Datta, Debasis Datta, and Donald Beck