Abstract

We describe probes of a local electric field, which are capable of detecting an electric charge as small as the charge of one electron e, operational under ambient conditions and having a spatial resolution down to 100nm. The submicron-sized probes were made from a high-density high-mobility two-dimensional electron gas, which is sensitive to the presence of electric charges near its surface. We demonstrate the possibility of using such microprobes for life-science applications by measuring an electric response of individual yeast cells to abrupt changes in their environment.

Keywords

Electric fieldElectronMaterials scienceElectric chargeResolution (logic)Image resolutionOptoelectronicsElectron mobilityAtomic physicsPhysicsOpticsComputer science

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Publication Info

Year
2005
Type
article
Volume
88
Issue
1
Citations
78
Access
Closed

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I. I. Barbolina, Kostya S. Novoselov, С. В. Морозов et al. (2005). Submicron sensors of local electric field with single-electron resolution at room temperature. Applied Physics Letters , 88 (1) . https://doi.org/10.1063/1.2159564

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DOI
10.1063/1.2159564