Submicron sensors of local electric field with single-electron resolution at room temperature
Submicron sensors of local electric field with single-electron resolution at room temperature
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DOI：
10.1063/1.2159564
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发表时间：
2006-01
影响因子：
4
通讯作者：
I. Barbolina;K. Novoselov;S. Morozov;S. Dubonos;M. Missous;A. Volkov;D. A. Christian;I. Grigorieva-I.-Grigorie
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文献类型：
--
作者：
I. Barbolina;K. Novoselov;S. Morozov;S. Dubonos;M. Missous;A. Volkov;D. A. Christian;I. Grigorieva-I.-Grigorie
我们描述的探针的局部电场，这是能够检测到的电荷一样小的一个电子e，在环境条件下操作，并具有空间分辨率下降到100 nm的电荷。亚微米尺寸的探针由高密度高迁移率的二维电子气制成，这种电子气对其表面附近的电荷敏感。我们证明了使用这种微探针的生命科学应用的可能性，通过测量单个酵母细胞的电响应，在他们的环境中的突然变化。
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.