We show experimentally that when an unfocused continuous wave(CW) laser beam is obliquely incident onto the surface of a millimeter-sized mineral oil drop on sucrose solution, it will exert a pushing force on the oil drop, making it move forwards along the surface of the sucrose solution. However, after a period of time, the oil drop stops moving. This can be explained as the phenomenon caused by the change of Abraham momentum, the optical gradient force, and friction together.
【英文摘要】
We show experimentally that when an unfocused continuous wave(CW) laser beam is obliquely incident onto the surface of a millimeter-sized mineral oil drop on sucrose solution, it will exert a pushing force on the oil drop, making it move forwards along the surface of the sucrose solution. However, after a period of time, the oil drop stops moving. This can be explained as the phenomenon caused by the change of Abraham momentum, the optical gradient force, and friction together.
【基金】
Project supported by the National Natural Science Foundation of China(Grant Nos.90921009 and 11274401)
【更新日期】
2015-10-15
【分类号】
O552
【正文快照】
1.IntroductionSince the invention of the optical tweezer by Ashkin etal.,[1]using optical forces to manipulate small objects has be-come popular.Optical forces have been successfully used inmany disciplines and applications.The most common exam-ple is tha
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