Hangzhou Dianzi University

3 ARTICLES PUBLISHED IN JoVE

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.

Bioengineering

Three-Dimensional Acoustic Assembly Device for Mass Manufacturing of Cell Spheroids

Yuecheng Qian¹, Xiaoyun Wei^1,2, Keke Chen^1,2, Mingen Xu^1,2

¹School of Automation, Hangzhou Dianzi University, ²Key Laboratory of Medical Information and 3D Bioprinting of Zhejiang Province, Hangzhou Dianzi University

Cell spheroids have been considered one potential model in the field of biological applications. This article describes protocols for scalably generating cell spheroids using a 3D acoustic assembly device, which provides an efficient method for the robust and rapid fabrication of uniform cell spheroids.