Abstract
Field emission is used as a displacement sensing method, exploiting the exponential relation
between field emission current and electrode gap. Atomic force microscopy (AFM) probes have been
used as field emission source to measure I/V characteristics which were found to correspond well to
theory. The field emission sensor was operated in a more linear regime by using feedback on the position
of the probe in order to maintain a constant current. The sensitivity of the sensor for displacement was
found to be 0.26 V/nm at a range of ~100 nm. From the experimental data, typical parameters for the
Fowler-Nordheim equation were deduced and used to model the sensor performance. The measurements
confirm that field emission can be applied to sense the distance between a probe tip and sample with
<20 nm resolution.
Original language | Undefined |
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Title of host publication | Transducers 2007 & Eurosensors XXI Digest of Technical Papers |
Place of Publication | Los Alamitos |
Publisher | IEEE |
Pages | 2361-2364 |
Number of pages | 4 |
ISBN (Print) | 1-4244-0841-5 |
DOIs | |
Publication status | Published - Jun 2007 |
Event | 21st European Conference on Solid-State Transducers, Eurosensors XXI - Lyon, France Duration: 10 Jun 2007 → 14 Jun 2007 Conference number: 21 |
Publication series
Name | |
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Publisher | IEEE Computer Society Press |
Conference
Conference | 21st European Conference on Solid-State Transducers, Eurosensors XXI |
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Abbreviated title | Eurosensors |
Country/Territory | France |
City | Lyon |
Period | 10/06/07 → 14/06/07 |
Keywords
- TST-uSPAM: micro Scanning Probe Array Memory
- METIS-245713
- TST-SMI: Formerly in EWI-SMI
- EWI-9810
- IR-64020