the National Natural Science Foundation of China (Grant Nos. 20673010 and 20640420450);the "111" Project (Grant No. B07012);the Incu-bation and Reward Foundation for Excellent Doctoral Dissertation of Beijing Insti-tute of Technology
Spherical MgSO4 droplets were deposited by a syringe on the hydrophobic Teflon substrate. Using micro-Raman technique, the laser beam was highly focused twice on the surface and in the center of spherical droplets. Th...