near-field scanning optical microscopy


Also found in: Acronyms.

near-field scanning optical microscopy

[¦nir ¦fēld ‚skan·iŋ ‚äp·tə·kəl mī′kräs·kə·pē]
(optics)
A technique for making optical measurements at dimensions much smaller than the wavelength of light, by scanning a nanometric detector or radiation source in proximity to a sample surface. Also known as scanning near-field optical microscopy.
References in periodicals archive ?
The new device grows out of a method known as near-field scanning optical microscopy (NSOM), which is widely used for imaging.
Near-field scanning optical microscopy (NSOM) is an interesting technique that surmounts one of the limitations of ordinary light microscopy: the diffraction limit.
More recently, Bell Labs researchers used this near-field scanning optical microscopy method to demonstrate a revolutionary new magneto-optic data storage technique that offers data densities of 45 billion bits per square inch -- a nearly 100-fold increase over today's best commercial magneto-optic methods.
Using a near-field scanning optical microscopy technique developed at Bell Labs, the system currently can write and image bits with dimensions as small as 60 nanometers (60 billionths of a meter or about 1,000 times smaller than the diameter of a human hair).

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