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Colloquium

Nanoscale Devices based on Two-dimensional Materials

Physics Colloquium

Date:
Time:
3:30 pm – 5:00 pm
Jorgensen Hall Room: 136
Co-Sponsored by NCMN

Speaker: Wenjuan Zhu, Department of Electrical and Computer Engineering,
University of Illinois at Urbana-Champaign
Host: Xia Hong

Abstract:
Two-dimensional (2D) materials are layered crystals with strong in-plane covalent bonds and weak interlayer van der Waals bonds. These materials have many unique chemical, mechanical, optical and electrical properties, which not only provide a platform to investigate fundamental physical phenomena but also may provide solutions to some of today’s most pressing technological challenges. In this talk, I will present our work on understanding the electrical properties of graphene, transition metal dichalcogenides, black phosphorus, group IV chalcogenides, and their heterostructures.1-3 I will also present our work on the nano-scale electronic devices (logic devices and radio frequency devices) and photonic devices (plasmonic devices and photo-detectors) based on these 2D materials.4,5

1 Zhu et al., Nat. Commun., 5, (2014).
2 Zhu et al., Nano Lett., 12, 3431-3436, (2012).
3 Lu et al., 2D Materials, 3, (2016).
4 Freitag et al., Nat. Commun., 4, (2013).
5 Yan et al., Nat. Photonics, 7, 394-399, (2013).

Bio: Wenjuan Zhu received her Ph.D. degree in the Department of Electrical Engineering at Yale University in 2003. After graduation, she joined IBM Semiconductor Research and Development Center, where she made key contributions to the 65nm and 32nm CMOS technology nodes. In 2008, she joined the IBM T. J. Watson Research Center and worked on developing 2D materials based nanoelectronics and nano-photonics. In 2014, she joined the faculty in the Department of Electrical and Computer Engineering at University of Illinois at Urbana-Champaign as an assistant professor. Prof. Zhu’s research focuses on 2D materials, including graphene and layered transition metal dichalcogenides, and nanoscale devices. She received the NSF CAREER award in 2017, IBM Research’s Pat Goldberg Memorial Best Paper Award in 2013, Outstanding Technical Achievement Award in IBM in 2008, more than ten Invention Achievement Award in IBM, Henry Prentiss Becton Graduate Prize for exceptional achievement in research in Engineering and Applied Science at Yale University in 2003.

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