TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
SICM [1 record]
Record 1 - internal organization data 2014-05-06
Record 1, English
Record 1, Subject field(s)
- Scientific Instruments
- Cytology
Record 1, Main entry term, English
- scanning ion-conductance microscope
1, record 1, English, scanning%20ion%2Dconductance%20microscope
correct
Record 1, Abbreviations, English
- SICM 2, record 1, English, SICM
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
... the scanning ion-conductance microscope (SICM) ... scans a sample not with a metal or diamond tip but with a glass micropipette containing a tiny electrode. The workers immerse the sample and the pipette in a bath of electrolyte (such as a salt solution) and establish a voltage difference between the electrode within the pipette and another electrode in the bath. A current of ions tends to flow between the electrodes by way of the pipette opening, but when the pipette approaches the surface of the sample, the current weakens. It disappears altogether when the scanned pipette touches the sample, which blocks the opening. Equipped with a feedback mechanism that maintains a constant ion current through the pipette opening, the SICM can profile a sample's topography. The fineness of the pipette does limit the SICM's resolution to about .2 micron (10 nanometers may eventually be feasible). 3, record 1, English, - scanning%20ion%2Dconductance%20microscope
Record number: 1, Textual support number: 1 OBS
The device is therefore best suited to more specialized functions - studying a living cell's electrical behavior, for example. When a cell is stimulated, so-called ion channels in its membrane open and close, allowing tiny currents of ions to pass. Hansma hopes to detect individual ion channels and study their behavior once the SICM's resolution has been improved. 3, record 1, English, - scanning%20ion%2Dconductance%20microscope
Record 1, French
Record 1, Domaine(s)
- Instruments scientifiques
- Cytologie
Record 1, Main entry term, French
- microscope à conductance ionique
1, record 1, French, microscope%20%C3%A0%20conductance%20ionique
correct, masculine noun
Record 1, Abbreviations, French
- SCIM 2, record 1, French, SCIM
correct, masculine noun
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Il est vrai que le microscope à effet tunnel et son cousin le microscope à conductance ionique (SCIM) ont des applications potentiellement très importantes en biologie. 3, record 1, French, - microscope%20%C3%A0%20conductance%20ionique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Instrumentos científicos
- Citología
Record 1, Main entry term, Spanish
- microscopio de barrido por conductancia iónica
1, record 1, Spanish, microscopio%20de%20barrido%20por%20conductancia%20i%C3%B3nica
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
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