The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
A electrostatic deflection assembly for low-voltage microscopy is shown which is made up of fewer parts, is easier to produce and assemble and enhances maintainability.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
100% of the total text.
Page 1 of 2
Improved Electrostatic Deflection Assembly for Low-Voltage Microscopy
A electrostatic deflection assembly for low-voltage microscopy is shown
which is made up of fewer parts, is easier to produce and assemble and
Through design simplification, an electrostatic deflection assembly for a low-
voltage microscope has been reduced from 20 part numbers to 7. Only 6 pieces
are required to be cleaned periodically as compared with 36 pieces in an existing
unit. Also, the design simplicity is better suited for vacuum environments.
A housing for the electrostatic deflection assembly is made from solid
stainless steel stock as shown in the figure. A bore is drilled through the length of
the cylinder and O-ring grooves are cut on each end for vacuum sealing. Flats
and windows for the deflection plates, eight holes for mounting stigmator coils
and the X and Y deflection plates are formed on a milling machine.
The four deflection plates are electrically isolated from the housing by utilizing
TEFLON* insulators placed on both sides of the plates. The O-ring groove depth
is designed to allow for 20 to 30% compression while maintaining about .5 mm of
space between the plates and housing as allowed by the insulator. * Trademark
of E. I. du Pont de Nemours & Co.
Page 2 of 2
[This page contains 3 pictures or other non-text objects]