Laser Process Allows Precision Design of Nanospheres
HANNOVER, Germany, April 17, 2014 — A laser-based technique for creating light-scattering silicon nanospheres could have applications in medicine and sensor technology.
Molten silicon forms nanoparticles which, due to surface tension, fly onto a receiver substrate. Images courtesy of Laser Zentrum Hannover.
The Nanophotonics Group of the Laser Zentrum Hannover (LZH) used femtosecond laser pulses to irradiate thin layers of silicon. The surface tension of the molten silicon created perfectly round, 165-nm...