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- W3036936552 abstract "Commercially available SEM‘s offer a maximum “TV” framing rate of ∼30 Hz. We have obtained a digitally-acquired framing rate of 381 Hz with submicron resolution [1]. This is at a 25 MHz pixel rate, compared with the ≤4 MHz video bandwidth of TV-rate machines. We have also performed analog-acquired experiments at effective framing rates of 4.9 kHz and effective pixel rates of >50 MHz. Our present detection and recording system is capable of 200 MHz pixel rates, with reduced contrast range at higher rates. Extrapolating current technology suggests that GHz pixel rates with useable final image signal-to-noise ratios are possible [2]. In large part, the success of electron microscopy is due to: the high resolution possible with the small de Broglie wavelength of even keV electrons, small effective electron source diameters, and small optical aberrations of well-designed electron optics. With this resolution, SEM also attains large depth of focus with scanned, narrow electron beams. SEM micrographs are generally noted for exceptional sharpness and large depth of focus. The highest quality micrographs require scan times of tens of seconds or more." @default.
- W3036936552 created "2020-06-25" @default.
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- W3036936552 date "1990-08-12" @default.
- W3036936552 modified "2023-09-27" @default.
- W3036936552 title "Fsem: Fast Scanning Electron Microscopy" @default.
- W3036936552 cites W1972188828 @default.
- W3036936552 doi "https://doi.org/10.1017/s0424820100181798" @default.
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