Summers M D, Burnham D R, McGloin D
SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews, KY16 9SS, UK.
Opt Express. 2008 May 26;16(11):7739-47. doi: 10.1364/oe.16.007739.
We demonstrate a method for the optical trapping of solid aerosol particles. Suspension of silica particles in ethanol allows their delivery to the trapping volume using a commercial medical nebulizer. The ethanol quickly evaporates, leaving the solid particles trapped in air. We use the technique to make comparisons between aerosol and colloid tweezing through power spectra analysis of the particle's positions fluctuations for identical particles trapped in a water or air suspending medium.
我们展示了一种用于光学捕获固体气溶胶颗粒的方法。二氧化硅颗粒在乙醇中的悬浮液可通过商用医用雾化器将其输送到捕获区域。乙醇迅速蒸发，使固体颗粒被困在空气中。我们使用该技术，通过对被困在水或空气悬浮介质中的相同颗粒的位置波动进行功率谱分析，来比较气溶胶镊子和胶体镊子。
