| EPSRC Reference: |
GR/S59086/01 |
| Title: |
Device Applications of the Acoustoelectric Nanocircuits |
| Principal Investigator: |
Talyanskii, Dr V |
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| Project Partners: |
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| Department: |
Physics |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 May 2004 |
Ends: |
30 April 2007 |
Value (£): |
140,089
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| EPSRC Research Topic Classifications: |
| Electronic Devices & Subsys. |
Materials Characterisation |
| Optoelect. Devices & Circuits |
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Summary on Grant Application Form |
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We propose to develop a current divider capable of delivering an exact (and controlled) fraction of a given current. In this way very small currents (<1fA) could be produced/measured with an accuracy compared to that achievable for large currents. Metrologically the region from 1nA to 1fA is very important and the sensitivity of presently used cryogenic current technology runs out at currents not much below 1 pA.Measurements of small currents are becoming more important as the performance of commercial instruments operating at the sub-pA level continues to improve. In relation to this, interest in the calibration of high value resistors is expected to grow as a result of this increased performance. Low current measurements are used in connection with a variety of detectors such as low current particle beam experiments, high precision mass spectrometry, and single electron transport. For example ion chambers produce currents typically in the range of 5-500 pA which need to be measured with an uncertainty of 0.1% or better. High resistance measurements relate to research on high-resistance materials such as insulators, dielectrics and polymers. The development of an accurate small current divider will increase traceability at low current levels and will also support related research in the field of single electron transport and small voltage measurements.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cam.ac.uk |