MEASUREMENT OF NANOSTRUCTURES WITH MICROMACHINED MICROSCOPES

KINO, G.S. ; MOERNER, W.E.

E.L. GINZTON LAB, STANFORD UNIVERSITY

关键词: Raman Spectroscopy;    Micromachined Cantilever;    Excitation;    Lasers;    Bowtie Antenna;   

DOI  :  10.2172/839403
RP-ID  :  DOE/ER/45815
RP-ID  :  FG03-00ER45815
RP-ID  :  839403

美国|英语

来源: UNT Digital Library

【 摘 要 】

We have made reproducible scanning probes with high efficiency, and predictable and reproducible character-istics. We obtained good efficiency with dimensions well below the diffraction limit, so that rela-tively small laser powers in the milliwatt range can be used. For single frequency operation, only low power is necessary to obtain very high fields for the excitation of well-defined Raman scattering, and to work in a reflection mode with good scanning speeds; obtained predictable results with very high fields suitable for obtaining Raman scattering and two-photon scattering; made a scanning probe mounted on a micromachined cantilever to obtain high definition reflection mode images that can be scanned rapidly;and observed Raman scattering using bowtie antennas with CW excitation.