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SNOM is the abbreviation for Scanning Near-field Optical Microscopy and is an alternate name for the Near-field Scanning Optical Microscopy.
SNOM" is the abbreviation for Scanning Near-field Optical Microscopy and is an alternate name for the Near-field Scanning Optical Microscopy.
The principle of SNOM near-field optics
In SNOM, light passes through the aperture of the sub-wavelength diameter, which in turn glows the sample, placed in its field. This is illuminated at a much lesser distance as compared to the light wavelength. The resolution that is achieved is far better than the traditional optical microscopes.
Types of systems of SNOM: Some of the SNOM systems include:
1. The MultiView 1000, which is a simple sample scanning SNOM microscope
2. The MultiView 2000: This the first ever SNOM system that combines tip and sample scanning
3. CryoView 2000: This first ever-commercial low temperature SNOM system provides free access to the sample
Some of the features of CryoView 2000 include:
· The Large scan has a range of 50um in the XY Plane and has a Z-scanning of over 25um · It has a 5x10-8 Torr High Vacuum Chamber · The unit enables the sample to be viewed in a standard upright, inverted or dual optical microscopes or and is mounted on · It is the first low temperature System that gives optical access from below and above the specimen or sample · It has a simultaneous NSOM and low temperature AFM" that goes down as low as 10K
The SNOM can be easily integrated with the Standard Optical Microscopes and help in localized operations at low temperatures by cooling the sample with the help of copper braids. It also has a motorized sample positioning with three operated stepper motors that work independent of each other. It also provides easy access to the probe and sample as it does not involve removal of the overall vacuum chamber. It also provides a Large XYZ scan range.
SNOM has surely transformed the structure of the microscope and has made them more sophisticated than the traditional ones. ArticleSource: ArticlesAlley.com
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