Materials Science Research Lecture

Wednesday, October 21, 2020
4:00pm to 5:00pm
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Quasi 2D and 1D van der Waals "Quantum" Materials
Alexander Balandin, Distinguished Professor, Electrical and Computer Engineering, University of California, Riverside,

Webinar Link:

https://caltech.zoom.us/j/95708772987

Webinar ID: 957 0877 2987

Abstract:

In this talk, I will describe the properties and applications of quasi-two-dimensional (2D) and quasi-one-dimensional (1D) "quantum" van der Waals materials. The 2D van der Waals materials include graphene and the transition metal dichalcogenides (TMD), which exfoliate or grow into quasi-2D atomic layers. The focus will be on 1T-TaS2, a unique material with charge-density-wave (CDW) phases observed above room temperature. The 1D van der Waals materials include members of the transition metal trichalcogenide (TMD) family, which exfoliate or grow into quasi-1D atomic threads or bundles of atomic chains. The focus will be on TaSe3 and ZrTe3. I will discuss electric bias switching among various CDW phases in 1T-TaS2 and possibilities of their device applications [1-3]; the use of the low-frequency current fluctuations for observing phase transitions in such materials [4]; current carrying capacity of TaSe3 and ZrTe3 atomic bundles [5-7]; and the use of such materials in composites for electromagnetic interference (EMI) shielding and thermal management in the next generation of communication systems [8-9].

[1] G. Liu, et al., Nature Nano, 11, 845 (2016); A. K. Geremew, et al., ACS Nano, 13, 7231 (2019); [3] A. K. Geremew, et al., Nanoscale, 11, 8380 (2019); [4] A. K. Geremew, et al., Appl. Phys. Lett., 116, 163101 (2020); [5] M. A. Stolyarov, et al., Nanoscale, 8, 15774 (2016); [6] G. Liu, et al., Nano Lett., 17, 377 (2017); [7] T. A. Empante, et al., Nano Letters, 19, 4355 (2019); [8] Z. Barani, et al., Adv. Electron. Mater., 2000520 (2020); [9] Z. Barani, et al., ACS Appl. Mater. Interfaces, 12, 28635 (2020).

More about the Speaker:

Prof. Alexander Balandin received his BS and MS degrees Summa Cum Laude in Applied Mathematics and Applied Physics from the Moscow Institute of Physics and Technology (MIPT), Russia. He received his second MS degree and PhD degree in Electrical Engineering from the University of Notre Dame, USA. From 1997 to 1999, he worked as a Research Engineer at the Department of Electrical Engineering, UCLA. In 1999 he joined UCR, where he is presently a Distinguished Professor of Electrical and Computer Engineering, the University of California Presidential Chair Professor of Materials Science, and Director of UCR Nanofabrication Facility. Professor Balandin is a Founding Chair of the UCR Materials Science and Engineering (MS&E) Program. His research interests include a wide range of nanotechnology, materials science, electronics, phononics and spintronics fields. Professor Balandin is a recipient of The MRS Medal from the Materials Research Society, The Brillouin Medal from the International Phononics Society and the Pioneer of Nanotechnology Award from IEEE Society for his graphene, phononics and nanotechnology research. He is an elected Fellow of MRS, APS, IEEE, OSA, SPIE, IOP, IOM3 and AAAS; is among the Clarivate Analytics and Thomson Reuters Highly Cited Researchers (Physics and Cross-Discipline); and serves as Deputy Editor-in-Chief of the Applied Physics Letters. For more information, visit: http://balandingroup.ucr.edu/

For more information, please contact Jennifer Blankenship by email at jennifer@caltech.edu.