Note: advancement in tip etching for preparation of tunable size scanning tunneling microscopy tips
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 roo...
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| Veröffentlicht in: | Review of scientific instruments 2015-02, Vol.86 (2), p.026104-026104 |
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| container_end_page | 026104 |
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| container_issue | 2 |
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| container_title | Review of scientific instruments |
| container_volume | 86 |
| creator | Corbett, J P Pandya, S G Mandru, A-O Pak, J Kordesch, M E Smith, A R |
| description | 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. |
| doi_str_mv | 10.1063/1.4907706 |
| format | Article |
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| ispartof | Review of scientific instruments, 2015-02, Vol.86 (2), p.026104-026104 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1228543 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Acetone Control stability Electrochemical etching Microscopy Scanning tunneling microscopy Scientific apparatus & instruments Tips |
| title | Note: advancement in tip etching for preparation of tunable size scanning tunneling microscopy tips |
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