How Hard Is the PE Exam? Know the Difficulty

Wondering how hard the PE exam really is? Discover why engineers say it’s one of the toughest tests—and how to prepare, survive, and pass.
C&EN

The Structural Design and Experimental Analysis of a Microneedle with Microchannels ...

MEMS Center, Harbin Institute of Technology, Harbin 150001, People’s Republic China Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin 150001, People’s ...