This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1088/0957-4484/18/42/424004 in citations.
Current Measurements in a wide Dynamic range - Applications to Electrochemical Nanotechnology
Current Measurements in a wide Dynamic range - Applications to Electrochemical Nanotechnology
Current measurements in a wide dynamic range from low picoamperes up to a few milliamperes are usually carried by implementing logarithmic current-to-voltage converter circuits. Conductance studies in nanoscale metal | molecule | metal junctions require measurements with a high dynamic range, good a...
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Personal Name(s): | Meszaros, G. |
---|---|
Li, C. / Pobelov, I. / Wandlowski, Th. | |
Contributing Institute: |
Grenz- und Oberflächen; IBN-3 JARA-FIT; JARA-FIT Center of Nanoelectronic Systems for Information Technology; CNI |
Published in: | Nanotechnology, 18 (2007) S. 424004 |
Imprint: |
Bristol
IOP Publ.
2007
|
Physical Description: |
424004 |
PubMed ID: |
21730437 |
DOI: |
10.1088/0957-4484/18/42/424004 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Nanotechnology
18 |
Subject (ZB): | |
Publikationsportal JuSER |
Current measurements in a wide dynamic range from low picoamperes up to a few milliamperes are usually carried by implementing logarithmic current-to-voltage converter circuits. Conductance studies in nanoscale metal | molecule | metal junctions require measurements with a high dynamic range, good accuracy and reasonable speed simultaneously. In this work we propose two novel circuit solutions which comply with these conditions: one is based on a high-accuracy, fine-tunable logarithmic current-to-voltage converter. Another circuit implements a double-output (or multiple-output) linear current-to-voltage converter, for which the problem of range-switching has been circumvented. Both circuits were applied in constructing a low-current bipotentiostat dedicated to the electrochemical formation of molecular-scale gaps, and a novel scanning tunnelling microscope preamplifier stage for current-distance spectroscopy studies. |