公开(公告)号：US20100245816A1

公开(公告)日：2010-09-30

申请号：US12660000

申请日：2010-03-26

申请人： Zexiang Shen ,  Johnson Kasim ,  Yumeng You ,  Ting Yu

发明人： Zexiang Shen ,  Johnson Kasim ,  Yumeng You ,  Ting Yu

IPC分类号： G01J3/44

CPC分类号： G01J3/44 ,  G01J3/02 ,  G01J3/0208 ,  G01N21/658 ,  G01N2021/656 ,  G01N2201/0639 ,  G01Q30/02 ,  G01Q60/22 ,  G02B21/26 ,  G02B21/33 ,  G02B27/141

摘要： Near-field Raman imaging is performed by holding a dielectric microsphere (e.g. of polystyrene) on or just above the surface of a sample in a Raman microscope. An illuminating laser beam is focused by the microsphere so as to produce a near-field interaction with the sample. Raman scattered light at shifted wavelengths is collected and analysed. The microsphere may be mounted on a cantilever of an atomic force microscope or other scanning probe microscope, which provides feedback to hold it in position relative to the sample surface. Alternatively, the microsphere may be held on the sample surface by an optical tweezer effect of the illuminating laser beam.

摘要翻译： 通过在拉曼显微镜中在样品表面上或正上方保持电介质微球（例如聚苯乙烯）进行近场拉曼成像。 照明激光束被微球聚焦，以产生与样品的近场相互作用。 收集并分析波长偏移的拉曼散射光。 微球可以安装在原子力显微镜或其他扫描探针显微镜的悬臂上，其提供反馈以将其保持在相对于样品表面的位置。 或者，可以通过照射激光束的光学镊子效应将微球保持在样品表面上。