Journal
APPLIED PHYSICS LETTERS
Volume 88, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2159564
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- Engineering and Physical Sciences Research Council [EP/D001722/1] Funding Source: researchfish
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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 100 nm. 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. (c) 2006 American Institute of Physics.
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