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(Chemistry) a device used in microanalysis that focuses radiation on a small area of a sample, exciting secondary radiation for analysis


(ˈmaɪ krəˌproʊb)

1. a device used to excite radiation by a material in order to determine chemical or elemental composition from the emission spectrum produced.
2. a miniature probe for use in microsurgery.
References in periodicals archive ?
Presolicitation: Proprietary Maintence Of Microprobes
Among the topics are small volume NMR: microprobes and cryoprobes, applying non-uniform sampling for sensitivity enhancement of small-molecule heteronuclear correlation NMR spectra, applying computer-assisted structure elucidation methods and NMR prediction to natural materials, multi-dimensional spin correlations by covariance NMR, and prospects and challenges in identifying molecular structure by atomic force microscopy.
Specifically, they measured hydrogen and its isotope, deuterium (hydrogen with an extra neutron in its nucleus) with ion microprobes, which use a focused beam of ions to sputter ions from a small rock sample into a mass spectrometer.
It uses intelligent microprobes that are embedded in existing routers, switches and other network elements without increasing footprint or power consumption.
Other studies examine the Galileo probe, Mars Pathfinder and its Sojourner rover, the Deep Space 2 Mars microprobes, and the Rosetta lander known as Philae.
The first tools that allowed analysis of a sample's composition without chemically processing it were earlier electron-beam microprobes. These machines generated electron beams and focused and directed them at a rock sample.
The analyzer comes with one pair of MP2O Microprobes, a set of common test leads, and one blue clip lead.
DuPont de Nemours Experimental Station in Wilmington, DE where he became involved in x-ray fluorescence (XRF) but soon developed an interest in Electron Probe Microanalysis (EPMA) when DuPont purchased one of the first commercial Applied Research Laboratories (ARL) scanning electron microprobes.
Young chaired a NASA-appointed panel that investigated the Mars program after the loss last year of the $125 million Mars Climate Orbiter, the $165 million Mars Polar Lander, and a $29.6 million pair of microprobes that had piggybacked on the lander.
The use of coplanar and coaxial microprobes has made many microwave measurements easier and more accurate.
There have been several attempts to deploy a penetrator system into the surface of a planet to investigate its interior: Deep Space2 microprobes Lunar-A and Mars 96.