sun flower from delimation

Tian Zhi Luo's picture

Optical microscope image of delimation of thin film by electrochemical deposition was taken one week ago.The large magnitue of compressive stress was thought to be the origin (in situ stress measurements indicated the stress evoultion attained a steady state after the delamination occured). The black center would be a pin-hole that has been oftern identified in the thin films grown by electrodepostion.


sun flower from delimation