Nitrogen-Free X-Ray Membrane for Microscopy
Original Publication Date: 1988-Apr-01
Included in the Prior Art Database: 2005-Feb-15
A technique is described whereby a nitrogen-free, high-quality, mechanically stable X-ray membrane with enhanced sensitivity is provided for microscopy. The concept is an improvement over previous methods which required silicon nitride membranes as the X-ray transmitting substrate to support biological specimens. In prior art, X-ray wavelengths necessary to achieve high resolution utilized nitrogen as a functional component of the silicon nitride. The concept described herein eliminates the need for nitrogen. It has been found that nitrogen has a very strong absorption peak which masks, inhibits and distorts and/or decreases the resolution of the specimen.