Razlika između verzija stranice "Skenirajući tunelski mikroskop"
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== Vidjeti i == |
== Vidjeti i == |
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[[Nanotehnologija]] |
[[Nanotehnologija]] |
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==Vanjski linkovi== |
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{{Commons|Scanning tunneling microscope}} |
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*[http://www.fz-juelich.de/pgi/pgi-3/microscope A microscope is filming a microscope] (Mpeg, AVI movies) |
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*[http://www.nano.geo.uni-muenchen.de/SW/images/zoom.html Zooming into the NanoWorld] (Animation with measured STM images) |
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*[http://nobelprize.org/educational_games/physics/microscopes/scanning/index.html NobelPrize.org website about STM], including an interactive STM simulator. |
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*[http://www.mobot.org/jwcross/spm/ SPM - Scanning Probe Microscopy Website] |
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*[http://www.almaden.ibm.com/vis/stm/gallery.html STM Image Gallery at IBM Almaden Research Center] |
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*[http://www.iap.tuwien.ac.at/www/surface/STM_Gallery/ STM Gallery at Vienna University of technology] |
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*[http://www.nanoworld.org/homepages/lapshin/gallery.htm SPM gallery: surface scans, collages, artworks, desktop wallpapers] |
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*[http://web.archive.org/web/20091028073926/http://www.geocities.com/spm_stm/Project.html Build a simple STM with a cost of materials less than $100.00 excluding oscilloscope] |
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*[http://www.nanotimes-corp.com Nanotimes Simulation engine of scanning tunneling microscope] |
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*[http://www.uni-ulm.de/~hhoster/personal/self_assembly.htm Structure and Dynamics of Organic Nanostructures discovered by STM] |
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*[http://www.uni-ulm.de/~hhoster/personal/metal_organic.htm Metal organic coordination networks of oligopyridines and Cu on graphite investigated by STM] |
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*[http://www.uni-ulm.de/~hhoster/personal/surface_alloys.html Surface Alloys discovered by STM] |
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*[http://molecularmodelingbasics.blogspot.com/2009/09/tunneling-and-stm.html Animated illustration of tunneling and STM] |
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*[http://nanohub.org/resources/2620 60 second movie clip with an introduction to Scanning Tunneling Microscopy(STM)] |
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* [http://www.toutestquantique.fr/#tunnel Animation, applications and research linked to tunnel effect and other quantum phenomena] (Université Paris Sud) |
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{{Tehnologija}} |
{{Tehnologija}} |
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{{Nanotehnologija}} |
{{Nanotehnologija}} |
Verzija na dan 9 januar 2013 u 02:45
Skenirajući Tunelski Mikroskop (STM) je veoma moćna tehnologija za snimanje površine i karakterizaciju materijala sa mogućnošću postizanja atomske rezolucije. STM je zasnovana na kvantno-mehaničkom efektu tunelovanja elektrona. Kada se zašiljen vrh od provodnog materijala približi provodnom ili poluprovodničkom materijalu napon koji je prethodno ostvaren između vrha i materijala omogućava prolazak elektrona kroz vakuum koji ih razdvaja. Nakon uspostavljanja toka elektrona struja koja teče između uzorka i vrha (koji igra ulogu sonde) je funkcija lokalne gustine stanja.
Njegov razvoj je 1981. donio pronalazačima, Gerd-u Binnig-u i Heinrich-u Rohrer-u (sa IBM Zürich), Nobelovu nagradu za fiziku, 1986.
Za STM, dobrom rezolucijom se smatra 0,1 nm poprečno, i 0,01 nm po dubini. Sa ovakvom rezolucijom, pojedinačni atomi na površini materijala su jednostavno uslikani, sa mogućnošću manipulacije.
Mnoge druge mikroskopske tehnike su razvijen na bazi STM. One uključuju: fotonsku skenirajuću mikroskopiju (PSTM), koja koristi optički šiljak za tuneliranje fotona; skenirajući tunelski potenciometar (STP), koji mjeri električni potencijal površine; spin polariziranu skenirajuću tunelsku mikroskopiju (SPSTM), koja koristi feromagnetični šiljak da tunelira spin-polarizirane elektrone u magnetskom uzorku, kao i mikroskopiju atomske sile (AFM), u kojoj se mjeri sila uzrokovana interakcijom između vrha i uzorka.
Vidjeti i
Vanjski linkovi
Scanning tunneling microscope na Wikimedia Commonsu. |
- A microscope is filming a microscope (Mpeg, AVI movies)
- Zooming into the NanoWorld (Animation with measured STM images)
- NobelPrize.org website about STM, including an interactive STM simulator.
- SPM - Scanning Probe Microscopy Website
- STM Image Gallery at IBM Almaden Research Center
- STM Gallery at Vienna University of technology
- SPM gallery: surface scans, collages, artworks, desktop wallpapers
- Build a simple STM with a cost of materials less than $100.00 excluding oscilloscope
- Nanotimes Simulation engine of scanning tunneling microscope
- Structure and Dynamics of Organic Nanostructures discovered by STM
- Metal organic coordination networks of oligopyridines and Cu on graphite investigated by STM
- Surface Alloys discovered by STM
- Animated illustration of tunneling and STM
- 60 second movie clip with an introduction to Scanning Tunneling Microscopy(STM)
- Animation, applications and research linked to tunnel effect and other quantum phenomena (Université Paris Sud)
Commons ima datoteke na temu: Skenirajući tunelski mikroskop |