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Updated: Jun 26, 2026

Fine-tuning the Size and Minimizing the Noise of Solid-state Nanopores

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Published on: October 31, 2013

A robust floating nanoammeter.

B E Sauer¹, D M Kara, J J Hudson

¹Centre for Cold Matter, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, United Kingdom.

The Review of Scientific Instruments

|January 7, 2009

Summary

This summary is machine-generated.

This study presents a novel circuit for accurately measuring nanoampere currents at high voltages up to 25kV. The circuit uses an optical fiber to transmit data safely to ground, ensuring robust performance during electrical discharges.

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Area of Science:

Electrical Engineering
High-Voltage Measurement
Instrumentation

Background:

Accurate measurement of low currents in high-voltage environments is challenging.
Existing methods often lack robustness against transient electrical events.

Purpose of the Study:

To develop and describe a circuit for measuring nanoampere currents at voltages up to 25kV.
To detail design and construction techniques for reliable high-voltage operation.

Main Methods:

A specialized circuit design for high-voltage isolation.
Utilization of an optical fiber for signal transmission to ground potential.
Implementation of robust construction techniques to withstand voltage spikes.

Main Results:

Successful measurement of nanoampere currents at voltages exceeding 25kV.
Demonstrated robust operation in the presence of high voltage spikes and discharges.
Reliable data transmission to ground via optical fiber.

Conclusions:

The developed circuit provides a viable solution for high-voltage, low-current measurements.
The design emphasizes practical construction for reliable performance in demanding electrical environments.
This technology enables new possibilities in high-voltage diagnostics and monitoring.