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Title: Note: Advancement in tip etching for preparation of tunable size scanning tunneling microscopy tips

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4907706· OSTI ID:1737521

The two aspects of a scanning tunneling microscopy tip, the macroscopic profile and the nanoscale apex, can be tailored by controlling the tension during electrochemical etching and the solution-electrode contact area via acetone vapor. The apex diameter is shown to be proportional to the square root of the tension, and is demonstrated over apex diameters of 150-500 nm. The apex was found to be created in four distinct shapes where a secondary etching can reshape the tip into a single geometry. Improvement in tip height and stability of the profile are demonstrated versus a non-acetone fabrication control.

Research Organization:
Ohio Univ., Athens, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-06ER46317
OSTI ID:
1737521
Alternate ID(s):
OSTI ID: 1228543
Report Number(s):
7-6; TRN: US2205337
Journal Information:
Review of Scientific Instruments, Vol. 86, Issue 2; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (11)

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The art and science and other aspects of making sharp tips journal March 1991
Very sharp platinum tips for scanning tunneling microscopy journal January 1995
Tungstate sharpening: A versatile method for extending the profile of ultra sharp tungsten probes journal March 2013
Preparation of platinum/iridium scanning probe microscopy tips journal July 1999
Etch-stop method for reliably fabricating sharp yet mechanically stable scanning tunneling microscope tips
  • Basnet, Gobind; Kevin Schoelz, James; Xu, Peng
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 31, Issue 4 https://doi.org/10.1116/1.4812796
journal July 2013
Efficient electrochemical etching method to fabricate sharp metallic tips for scanning probe microscopes journal October 2006
Effect of fabrication process parameters on the apex-radius of STM tungsten nanotip journal March 2009

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