Near-Field Scanning Optical Microscope (NSOM)


Near-field scanning optical microscopy permits the user to collect data using typical optical contrast methods such as absorption, polarization, and fluorescence with a resolution approximately one order of magnitude smaller than the wavelength of light. This technique takes advantage of the fact that light may be directed through a 50-nm aperture at the end of an optical fiber that may then be scanned across the surface of a specimen. The fiber tip is held tens of nanometers above the surface, and both a topographic and optical image of the sample may be generated simultaneously. Fluorescence (UV/Visible light range) spectra may be recorded by holding the tip over a single feature.

Tables for the Zeiss Objectives can be found here.
A chart for immersion oil types can be found here.

For additional information about this piece of equipment, see the Calendars, Contacts, and Fees pages.

Primary ContactLeilei Yin
Manufacturer(Fabricated in the laboratory)
Equipment ModelMultimode NanoScope IIIa
Features- Transmission
- Reflection
- Collection NSOM
Related Equipment- Fiber Puller
User ResourcesDigital Instruments Help Desk: