Video: Yuav ua li cas scanning tunneling microscope ua haujlwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov scanning tunneling microscope ( STM ) ua haujlwm los ntawm luam theej duab ib tug ntse heev hlau hlau taub hau ntawm ib tug nto. Los ntawm kev nqa lub hau kom ze rau ntawm qhov chaw, thiab los ntawm kev siv hluav taws xob hluav taws xob rau lub taub lossis cov qauv, peb tuaj yeem ua duab rau saum npoo ntawm qhov ntsuas me me - nqis los daws cov atoms ntawm tus kheej.
Hais txog qhov no, scanning tunneling microscope ua li cas?
A Scanning Tunneling Microscope ( STM ) yog ib qho cuab yeej rau kev ntsuas qhov chaw ntawm qib atomic. Nws txoj kev loj hlob hauv 1981 tau txais nws cov neeg tsim khoom, Gerd Binnig thiab Heinrich Rohrer (ntawm IBM Zürich), Nobel nqi zog hauv Physics hauv 1986.
Ib yam li ntawd, koj puas tuaj yeem pom cov atoms siv lub tshuab ntsuas tunneling? Tsis muaj ib puas tau pom ib atom . Lub wavelength ntawm pom lub teeb yog ntau tshaj 1000 npaug loj dua ib atom , yog li lub teeb siv tsis tau saib ib atom . Scanning Tunneling Microscopes ua haujlwm los ntawm kev txav ib qho kev sojntsuam tawm ntawm ib qho chaw peb xav duab. Lub ntsiab lus ntawm kev sojntsuam yog qhov ntse heev - tsuas yog ib los yog ob atoms ntawm nws qhov taw tes.
Raws li kev sib raug zoo, tus nqi scanning tunneling microscope nqi npaum li cas?
Tus nqi qis thiab qis qis STMs pib ntawm kwv yees li $8, 000 tab sis qee tus neeg tau ua tiav lawv tus kheej kev ua haujlwm STMs kom tsawg dua li qhov nyiaj ntawd. Txawm li cas los xij, kev tshaj lij STMs tuaj yeem nyob txhua qhov chaw los ntawm $30, 000 rau $150, 000 nyob ntawm cov chaw tsim khoom thiab cov khoom ntxiv nrog.
Leej twg invented scanning tunneling microscope?
Gerd Binnig Heinrich Rohrer
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