Optical pulling of airborne absorbing particles and smut spores over a meter-scale distance with negative photophoretic force
Abstract
We demonstrate optical pulling of single light-absorbing particles and smut spores in air over a meter-scale distance using a single collimated laser beam based on negative photophoretic force. The micron-sized particles are pulled towards the light source at a constant speed of 1–10 cm/s in the optical pulling pipeline while undergoing transverse rotation at 0.2–10 kHz. The pulled particles can be manipulated and precisely positioned on the entrance window with an accuracy of ∼20 μm, and their chemical compositions can be characterized with micro-Raman spectroscopy.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 27, 2015
- Source ID
- 10.1063/1.4919533
Entities
People
- Adam G. Hart
- Jinda Lin
- Yong-qing Li
Organizations
- Army Research Office
- East Carolina University