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A scanning helium ion microscope (SHIM, HeIM or HIM) is an imaging technology based on a scanning helium ion beam. [2] Similar to other focused ion beam techniques, it allows to combine milling and cutting of samples with their observation at sub-nanometer resolution.
The scanning helium microscope (SHeM) is a form of microscopy that uses low-energy (5–100 meV) neutral helium atoms to image the surface of a sample without any damage to the sample caused by the imaging process. Since helium is inert and neutral, it can be used to study delicate and insulating surfaces.
As helium ions can be focused into a small probe size and provide a much smaller sample interaction than high energy (>1 kV) electrons in the SEM, the He ion microscope can generate equal or higher resolution images with good material contrast and a higher depth of focus. Commercial instruments are capable of sub 1 nm resolution. [21] [22]
Scanning helium microscope may refer to: Scanning helium microscopy; Scanning Helium Ion Microscope; Atomic nanoscope, which was proposed and discussed in the literature, but is not yet competitive with optical microscope, electron microscope, Scanning Helium Ion Microscope and various scanning probe microscopes
They produced their first mass spectrometer in 1963, and their first scanning electron microscope in 1966. In 1968, they produced the first amino acid analyzer in the world, the JLC-5AH. [ 12 ] The company also continued to develop its line of electron microscopes.
Researchers are currently studying the use of ion beam analysis in conjunction with a scanning electron microscope and an Energy Dispersive X-ray spectrometer (SEM-EDS). [8] The hope is that this setup will detect the composition of new and old chemicals that older analyses could not efficiently detect in the past. [ 8 ]
Scanning ion-conductance microscopy (SICM) is a scanning probe microscopy technique that uses an electrode as the probe tip. [1] SICM allows for the determination of the surface topography of micrometer and even nanometer-range [ 2 ] structures in aqueous media conducting electrolytes.
FEI Company (Field Electron and Ion Company) was an American company that designed, manufactured, and supported microscope technology. Headquartered in Hillsboro, Oregon , FEI had over 2,800 employees and sales and service operations in more than 50 countries around the world.