Abstract
Soft x-ray contact microscopy has been pursued for many years because of the potential advantages of 1 to 10 nm electro-magetic radiation for imaging biological materials. These are the lower damage and greater penetration than electrons and considerably higher resolution than visible light microscopy, both possible without exotic optics.The technique is similar to contact printing. The object to be viewed is placed as close as possible to the recording medium which is then exposed to a suitable x-ray source.. The sample is removed from the recording medium which is then chemically developed. The result is map of the x-ray opacity of the original specimen.The high resolution has only become reality in recent years with the use of x-ray photo-resists as the recording material. These were origionally developed for use in the electronics industry but have been used for contact images of biological material.
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