Hangzhou Dianzi University

2 ARTICLES PUBLISHED IN JoVE

Tip-Enhanced Raman Spectroscopy (TERS) Imaging of Grapheme

Andrew Pollard¹, Naresh Kumar¹, Weitao Su², Debdulal Roy¹

¹National Physical Laboratory, ²Institute of Material Physics, Hangzhou Dianzi University

A comprehensive methodology is described for overcoming experimental obstacles encountered when using tip-enhanced Raman spectroscopy (TERS) to map the properties of graphene surfaces. Critical steps, such as the optical alignment of the system, the preparation of TERS probes and the operational TERS procedure required to obtain consistent results, are outlined.

JoVE Journal

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Jian W. M. Lim¹, Igor Levchenko^1,2, Muhammad W. A. B. Rohaizat¹, Shiyong Huang¹, Luxiang Xu¹, Yu Fei Sun¹, George C. Potrivitu¹, Jen S. Yee¹, Roysmond Z. W. Sim¹, Youmei Wang³, Svitlana Levchenko¹, Kateryna Bazaka^2,1, Shuyan Xu¹

¹Plasma Sources and Applications Centre, National Institute of Education, Nanyang Technological University, ²School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, ³Department of Physics, School of Science, Hangzhou Dianzi University

Here, we present a protocol to test and optimize space propulsion systems based on miniaturized Hall-type thrusters.