Imaging of charge spatial density on insulating materials

被引:11
|
作者
Beardsmore-Rust, S. T. [1 ]
Watson, P. [1 ]
Prance, R. J. [1 ]
Harland, C. J. [1 ]
Prance, H. [1 ]
机构
[1] Univ Sussex, Dept Engn & Design, Ctr Phys Elect & Quantum Technol, Brighton BN1 9QT, E Sussex, England
关键词
sensors; electric potential sensors; electrostatics; tribo-charging; security; forensics; CONTACT ELECTRIFICATION; SIGNALS;
D O I
10.1088/0957-0233/20/9/095711
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We describe the measurement of spatial charge distribution, using a new non-invasive technique. This measurement, based on a 16-element array of ultra-high impedance electric field sensors, is capable of producing both quantitative results for the total amount of surface charge present, as well as imaging the charge to produce plots representing spatial charge distribution. We calibrate the measurement against a conventional induction field meter charge measurement which discharges the sample. Further to this, we show that our technique has no discharging effect on the sample and that therefore it is possible to observe the discharging of insulating materials over periods of several days.
引用
收藏
页数:6
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