Passive guiding and sorting of small particles with optical binding forces.
We demonstrate the possibility of serially guiding and sorting nanometer-sized particles without the use of any external control. The working principle is based on an equilibrium between scattering and binding forces, the latter depending on the properties of the particles. A configuration is proposed that utilizes this property and is shown to efficiently sort small particles as function of their size.
Grzegorczyk
Tomasz M
TM
Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 02139, USA. tomasz@mit.edu
Kemp
Brandon A
BA
Kong
Jin Au
JA