Materials Science and Engineering Seminar

Date
Fri, Mar 22, 2019 1:00 pm - 2:00 pm
Location
2110 Chem/Nuc Engineering Building

Description

Speaker: Jimmy Kotsakidis, Ph.D. Student at Monash University, Physics Dept., Australia

Title: Fundamental Experimental Studies on the Oxidation of Monolayer WS2 and Intercalation of Graphene on Silicon Carbide with the Alkali Earths

Abstract: This talk will cover experiments on the 2D materials WS­2 and graphene. We have examined the ambient oxidation of monolayer WS2, finding that oxidation proceeds via a photoexcitation induced (photo-oxidation) pathway requiring absorbed light at or above the trion energy. Significant oxidation occurs for WS2 exposed to laboratory lights for weeks, or a single typical photoluminescence map though is prevented for WS2 stored in darkness. I will also present findings from STM and Synchrotron XPS studies on the intercalation of mono and bilayer graphene on SiC with magnesium and calcium.

Upcoming Events

20 May
CMTC Spring Symposium
Mon, May 20, 2019 11:00 am - 4:15 pm
21 May
CMTC Spring Symposium
Tue, May 21, 2019 11:00 am - 4:15 pm
21 May
Physics Colloquium
Tue, May 21, 2019 4:00 pm - 5:00 pm
22 May
PChem/ANE/ChemPhys Seminar
Wed, May 22, 2019 11:00 am - 12:00 pm
22 May
CMTC Spring Symposium
Wed, May 22, 2019 11:00 am - 3:30 pm