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US 5,559,328 AGranted
Small cavity analytical instruments
AssigneeBiotechnology Research and Development Corporation
InventorsPaul S. Weiss, Lloyd A. Bumm, Barry G. Willis, Richard L. Baer
Life of this patent
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Abstract
A sample and the tip portion of an alternating current scanning tunneling microscope are electrically enclosed within a cavity with electrically conductive walls. The dimensions of the cavity are smaller than the wavelength of a component of the AC signal applied by the probe to the sample so that the output signal detected by the probe from the sample will not be contaminated by resonant effects of the cavity.
Claims17
An apparatus for analyzing samples, comprising:
- at least one analytical instrument applying or detecting an AC electrical signal from a sample, said signal including a signal component at a frequency;
- and
- a housing enclosing a cavity, including:(a) a first electrically conductive portion for holding the sample and (b) a second electrically conductive portion for holding the instrument, said cavity having at least one electromagnetic resonant mode;
- wherein dimensions of the cavity are such that frequency of the lowest electromagnetic resonant mode of the cavity and structures enclosed in the cavity is greater than the frequency of the signal component.
1 more element
Dependencies are inferred from the claim text.