Scanning probe microscopy - Revision history

Apm: Category:Direct path

2026-03-29T18:05:10Z

← Older revision		Revision as of 20:05, 29 March 2026
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	* https://web.mit.edu/vex/www/projects/stm/		* https://web.mit.edu/vex/www/projects/stm/
	* https://web.archive.org/web/20150826224909/http://openafm.com/blog/		* https://web.archive.org/web/20150826224909/http://openafm.com/blog/

			[[Category:Direct path]]

Apm: /* Related / link to yet unwritten page Scanning tunneling microscopy

2026-01-07T14:33:59Z

Related: link to yet unwritten page * Scanning tunneling microscopy

← Older revision		Revision as of 16:33, 7 January 2026
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	----		----
	* [[DIY SPM projects]]		* [[DIY SPM projects]]
			* [[Scanning tunneling microscopy]]

	== External Links ==		== External Links ==

Apm at 10:35, 21 September 2025

2025-09-21T10:35:05Z

← Older revision		Revision as of 12:35, 21 September 2025
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	Metallic STM tips (made from thin wire that is cut-and-pulled or etched to get a sharp apex) <br>		Metallic STM tips (made from thin wire that is cut-and-pulled or etched to get a sharp apex) <br>
	are usually sharper than AFM tips etched from e.g. a silicon nitride wafer. <br>		are usually sharper than AFM tips etched from e.g. a [[silicon nitride]] wafer. <br>
	{{Wikitodo\|Investigate that statement more deeply}}.		{{Wikitodo\|Investigate that statement more deeply}}.

Apm: /* Related / added links to yet unwritten pages: '''SPM software''' * '''SPM user interfaces''' * '''SPM force feedback'''

2025-05-13T05:54:21Z

Related: added links to yet unwritten pages: * '''SPM software''' * '''SPM user interfaces''' * '''SPM force feedback'''

← Older revision		Revision as of 07:54, 13 May 2025
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	* '''[[Stiff cantilever AFM]]'''		* '''[[Stiff cantilever AFM]]'''
	* '''[[~~Scanning probe microscopy~~ software]]'''		* '''[[SPM software]]'''
			* '''[[SPM user interfaces]]'''
			* '''[[SPM force feedback]]'''
	* [[Patterned layer epitaxy]]		* [[Patterned layer epitaxy]]
	* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]		* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]

Apm: massive update/improvement on the intro

2025-05-13T05:48:58Z

massive update/improvement on the intro

← Older revision		Revision as of 07:48, 13 May 2025
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	{{stub}}		{{stub}}

	In ~~this kind of~~ microscopy a needle with a very sharp is moved across the surface ~~in meanders (line by line)~~ and ~~a computer reconstructs an image~~ from the interaction of the needles tip with ~~the~~ surface. Depending on the type of interaction used (electrical mechanical or other) ~~scanning probe microscopy~~ is further classifies in ~~subcategories~~.		In scanning probe microscopy (henceforth SPM) a needle with a very sharp tip-apex <br>
			is moved across the surface of a flat sample, and from the interaction of the needles tip-apex with <br>
			this samples surface a computer reconstructs various things like:
			* '''images from line-by-line scans'''; most importantly as this aspect is making it a form of (real space) microscopy
			* signal change by moving up and down at a single position (vertical scan)
			* spectra gained by variation of non-positional quantities (like e.g. electric voltage)
			* and more
			Depending on the type of interaction used (electrical mechanical or other) <br>
			SPM is further classifies in many sub-categories. <br>
			Most basically the two main types of SPM are:
			* '''electrical: STM scanning tunneling microscopy'''
			* '''mechanical: AFM atomic force microscopy''' (modern subatomically resolving ones actually imaging stiffness not force)

	~~The two main types~~ of ~~SPM are:~~		In both cases STM and AFM ideally one would like to have only one single atom at the tip. <br>
	* electrical: STM scanning tunneling microscopy		But as of 2025 this is in most cases still wishful thinking. <br>
	* mechanical: AFM atomic ~~force microscopy~~		In reality the average tip looks more like a rounded deformed mountain top. A giant ball. <br>
			Images of the shape of SPM-needle-tip-apices with near atomic resolution <br>
			have been taken with [[transmission electron microscopes]] (TEM). See external links. <br>

	~~In both cases STM and AFM one would like to have only one single atom at the tip.~~		Metallic STM tips (made from thin wire that is cut-and-pulled or etched to get a sharp apex) <br>
	~~But this is wishful thinking. In reality the average tip looks more like a rounded deformed mountain top.~~		are usually sharper than AFM tips etched from e.g. a silicon nitride wafer. <br>
	~~Images have been taken (with big transmission electron microscopes) that show that. See external links.~~		{{Wikitodo\|Investigate that statement more deeply}}.
	Metallic STM tips (made from etched ~~wire~~) are usually sharper than AFM tips etched from e.g. a silicon nitride wafer.

	== Electrical SPM called: "scanning tunneling microscopy STM" ==		== Electrical SPM called: "scanning tunneling microscopy STM" ==

Apm: link to yet unwritten page * '''Scanning probe microscopy software'''

2025-05-05T11:49:03Z

link to yet unwritten page * '''Scanning probe microscopy software'''

← Older revision		Revision as of 13:49, 5 May 2025
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	* '''[[Stiff cantilever AFM]]'''		* '''[[Stiff cantilever AFM]]'''
			* '''[[Scanning probe microscopy software]]'''
	* [[Patterned layer epitaxy]]		* [[Patterned layer epitaxy]]
	* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]		* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]

Apm: /* Related / added link to yet unwritten page DIY SPM projects

2024-09-28T17:29:31Z

Related: added link to yet unwritten page * DIY SPM projects

← Older revision		Revision as of 19:29, 28 September 2024
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	* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]		* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]
	* [[Experimental demonstrations of single atom manipulation]]		* [[Experimental demonstrations of single atom manipulation]]
			----
			* [[DIY SPM projects]]

	== External Links ==		== External Links ==

Apm: /* Related / added '''Stiff cantilever AFM'''

2024-02-25T19:50:20Z

Related: added * '''Stiff cantilever AFM'''

← Older revision		Revision as of 21:50, 25 February 2024
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	== Related ==		== Related ==

			* '''[[Stiff cantilever AFM]]'''
	* [[Patterned layer epitaxy]]		* [[Patterned layer epitaxy]]
	* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]		* [[Ultra high resolution atomically resolving imaging via SPM microscopy]]

Apm: /* Relevant milestone papers */

2023-06-19T15:02:57Z

Relevant milestone papers

← Older revision		Revision as of 17:02, 19 June 2023
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	'''Gaining high chemical contrast:''' <br>		'''Gaining high chemical contrast:''' <br>
			With STM: https://www.iap.tuwien.ac.at/www/surface/stm_gallery/chemical_resolution <br>
	{{wikitodo\|find it and add it}}		{{wikitodo\|find it and add it}}

Apm: /* Relevant milestone papers */ added two more wikitodos

2023-06-19T14:44:28Z

Relevant milestone papers: added two more wikitodos

← Older revision		Revision as of 16:44, 19 June 2023
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	2018 Press release: [https://phys.org/news/2018-02-microscopy-breakthrough-paves-atomically-precise.html Microscopy breakthrough paves the way for atomically precise manufacturing]<br>		2018 Press release: [https://phys.org/news/2018-02-microscopy-breakthrough-paves-atomically-precise.html Microscopy breakthrough paves the way for atomically precise manufacturing]<br>
	2018 Paper: [https://pubs.aip.org/aip/rsi/article/89/1/013701/930241/On-the-effect-of-local-barrier-height-in-scanning On the effect of local barrier height in scanning tunneling microscopy: Measurement methods and control implications] (open access)<br>		2018 Paper: [https://pubs.aip.org/aip/rsi/article/89/1/013701/930241/On-the-effect-of-local-barrier-height-in-scanning On the effect of local barrier height in scanning tunneling microscopy: Measurement methods and control implications] (open access)<br>
	{{wikitodo\|IIRC there was an earlier paper on ~~SPM control for~~ improved z-control - find it and add it}}		{{wikitodo\|IIRC there was an earlier paper on improved z-control for SPM/STM - find it and add it}}

	'''Automating tip modifications:''' <br>		'''Automating tip modifications:''' <br>
	2022 paper CC-BY [https://acris.aalto.fi/ws/portalfiles/portal/77785520/Automated_tip_functionalization_via_machine_learning_in_scanning_probe_microscopy.pdf Automated Tip Functionalization via Machine Learning in Scanning Probe Microscopy] (picking up -CO groups)<br>		2022 paper CC-BY [https://acris.aalto.fi/ws/portalfiles/portal/77785520/Automated_tip_functionalization_via_machine_learning_in_scanning_probe_microscopy.pdf Automated Tip Functionalization via Machine Learning in Scanning Probe Microscopy] (picking up -CO groups)<br>
	{{wikitodo\|IIRC there was a video and paper on using AI to do automated STM tip analysis and reconstruction - find it and add it}}		{{wikitodo\|IIRC there was a video and paper on using AI to do automated STM tip analysis and reconstruction - find it and add it}}

			'''Gaining high chemical contrast:''' <br>
			{{wikitodo\|find it and add it}}

			'''A special new technique between AFM and SPM:''' <br>
			{{wikitodo\|find it and add it}}

	=== Other ===		=== Other ===