DEVICE AND METHOD FOR MEASURING SMALL VOLTAGES AND

专利名称：DEVICE AND METHOD FOR MEASURING

SMALL VOLTAGES AND POTENTIALS ON ABIOLOGICAL, CHEMICAL OR OTHER SAMPLE

发明人：Svetlana VITUSEVICH,Jing LI,Sergli PUD申请号：US15033235申请日：20141015

公开号：US20160274055A1公开日：20160922

专利附图：

摘要：A device and a method for measuring small voltages and potentials onbiological, chemical and other samples. The device comprises at least one field effect

transistor including a source, a drain, a gate that is in contact with the sample andinsulated by a gate dielectric from the conducting channel of the field effect transistor,means for applying a voltage between the source and the drain, and means for applying abias voltage to the gate. The gate dielectric includes at least one attachment site in theinterior thereof, which is able to trap charge carriers from the channel and, conversely, torelease these to the channel. Such an attachment site superimposes the current flowingthrough the channel, and thus through the transistor, with a telegraph modulation signalby continuously statistically exchanging charge carriers with the channel, thecharacteristic time constants of the telegraph modulation signal being usable as ameasuring signal for the potential or voltage of the sample instead of the previouslyused average time value of the drain current. In this way, a larger portion of themeasured information is evaluated with respect to the required result, whichconsiderably improves the sensitivity and accuracy of the measurement.

申请人：FORSCHUNGZENTRUM JÜLICH GMBH

地址：Juelich DE

国籍：DE

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