Journal
ACS NANO
Volume 5, Issue 4, Pages 2570-2579Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn102199u
Keywords
near-field scanning optical microscopy; nanostructures; gold nanocones; electron beam induced deposition; ion milling; near-field enhancement; tip-enhanced Raman spectroscopy
Categories
Funding
- European Social Fund
- Ministry Of Science, Research
- Arts Baden-Wurttemberg
- Baden-Wurtternberg-Stiftung
- Tubingen University
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
Ask authors/readers for more resources
Near-field scanning optical microscopy enables the simultaneous topographical and, subdiffraction limited optical imaging of surfaces. A process is presented for the implementation of single individually engineered gold cones at the tips of atomic force microscopy cantilevers. These cantilevers act as novel high-performance optical near-field probes. In the fabrication, thin-film metallization, electron beam induced deposition of etch masks, and Ar ion milling are combined. The cone constitutes a well-defined highly efficient optical antenna with a tip radius on the order of 10 nm and an adjustable plasmon resonance frequency. The sharp tip enables high resolution, topographical imaging. By controllably varying the cone size, the resonance frequency can be adapted to the application of choice. Structural properties of these sharp-tipped probes are presented together with topographical images recorded with a cone probe. The antenna functionality is demonstrated by gathering the near field enhanced Raman signature of individual carbon nanotubes with a gold cone scanning probe.:
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available