Scanning tunnelling microscope. Scanning electron micrograph of a scanning tunnelling microscope (STM). The micromechanical STM is comprised of a needle electrode (at upper centre) on a suspended structure surrounded by motors. This STM can read data written as atomic-scale mounds or holes on a silicon chip. It works by bringing the needle to within a few ten millionths of a millimetre of the sample's surface. Electrons in the sample and tip interact and create a small tunnelling current. The needle is scanned across the sample, vertical movements maintaining tip-to-surface distance. These movements are processed to give a map of the surface. Magnification: x240 at 6x7cm size. Magnification: x365 at10x12cm size.
px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP10193941
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
Same folder images: