Medical Definition of Spm

1. Initially called Atomic Force Microscopy, this technique is now more typically termed Scanning Force Microscopy or Scanning Probe Microscopy. This instrument is essentially an extremely high resolution profilometre. A sharp tip, typically fabricated from silicon nitride, is scanned across the surface of a sample at a constant force by three piezoelectric ceramics. The piezoelectric ceramics are computer controlled via a feedback loop which monitors the position of the tip by means of an optical lever. (A laser is focused on the top of the tip support and the beam reflected into a position sensitive detector). The changes in height of the tip are used to form an image as the tip is scanned across the sample. Acronym: SPM (26 Mar 1998)



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Lexicographical Neighbors of Spm

SPARQL
SPB
SPCA
SPCUM
SPD
SPDL
SPE
SPECT
SPF
SPFA
SPG
SPGB
SPL
SPLA
SPM
SPOF
SPP
SPRG
SPS
SPSO
SPUI
SPUIs
SPVM
SPipistrellus hesperus
SQ
SQDG
SQEP
SQL

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