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Related Experiment Video

Updated: Jul 2, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

Transient conductivity measurements with subnanosecond time resolution.

¹Hahn-Meitner-Institut für Kernforschung Berlin GmbH, Bereich Strahlenchemie, Glienicker Strasse 100, Federal Republic of Germany.

The Review of Scientific Instruments

|September 1, 1979

Summary

This study details designs for coaxial conductivity cells achieving subnanosecond time resolution for radiation-induced conductivity transients. The system demonstrates rapid response times, crucial for accurately measuring fast conductivity changes.

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Last Updated: Jul 2, 2026

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

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Published on: January 19, 2018

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Published on: January 26, 2014

Area of Science:

Physics
Electrical Engineering
Materials Science

Background:

Understanding transient conductivity changes is vital for radiation detection and material analysis.
Previous methods lacked the necessary time resolution to capture rapid conductivity events.

Purpose of the Study:

To discuss parameters influencing system response time to transient conductivity changes.
To design and evaluate coaxial conductivity cells with subnanosecond time resolution.

Main Methods:

Theoretical discussion of parameters governing system response.
Design of coaxial conductivity cells featuring parallel-plate electrodes.
Performance evaluation using 30-picosecond (ps) width ionization pulses.

Main Results:

Achieved subnanosecond time resolution.
Measured system rise time of 95 ps and fall time of 80 ps.
Demonstrated minimal signal distortion during measurements.

Conclusions:

The developed coaxial conductivity cells effectively achieve high time resolution for transient conductivity measurements.
The results align with theoretical predictions.
Further improvements to decrease response times are feasible.