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We present control circuits designed for electrochemically etching, reproducibly sharp STM probes. The design uses an Arduino UNO microcontroller to allow for both ac and dc operation, as well as a comparator driven shut-off that allows for etching to be stopped in 0.5–1 μs. The Arduino allows the instrument to be customized to suit a wide variety of potential applications without significant changes to hardware. Data is presented for coarse chemical etching of 80:20 platinum-iridium, tungsten, and nickel tips.
Published in:
Review of Scientific Instruments
(Volume:83
,
Issue:
3
)
Date of Publication: Mar 2012
- Page(s):
- 036105 - 036105-3
- ISSN :
- 0034-6748
- Digital Object Identifier :
- 10.1063/1.3695001
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 22 March 2012
- Issue Date :
- Mar 2012
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