System for detecting threshold phenomena associated with and/or atomic or molecular spectra of a substance
AssigneesThe Penn State Research Foundation, Penn State Research Foundation and Biotechnology Research
InventorsPaul S. Weiss, Stephan J. Stranick
Life of this patent
Estimating the term…
Abstract
A microwave sweep oscillator is used to apply an AC signal cross a scanning tunneling microscope and the current or voltage passing between the electrodes is measured by a microwave spectrum/network analyze This invention was made with support from the National Science Foundation, United States Government, under Grant No. CHE-9158375. The government has rights in this invention.
Claims24
An apparatus for detecting threshold phenomena associated with and/or atomic or molecular spectra of a substance, comprising:
- a source for providing an AC electrical signal;
- at least two electrodes for coupling said signal across a substance;
- and
- means connected to at least one of the electrodes for measuring the amplitudes of the current or voltage across the electrodes over a predetermined spectrum of frequencies to detect threshold phenomena associated with and/or atomic or molecular spectra of the substance.
A method for detecting threshold phenomena associated with and/or atomic or molecular spectra of a substance by means of at least two electrodes across the substance, said method comprising:
- providing an AC electrical signal to the pair of electrodes;
- and
- measuring the amplitudes of the current or voltage across the electrodes over a predetermined spectrum of frequencies to detect threshold phenomena associated with and/or atomic or molecular spectra of the substance.
An apparatus for detecting threshold phenomena associated with and/or atomic or molecular spectra of a substance, comprising:
- a tunable source for providing an AC electrical signal at a selected frequency;
- at least two electrodes for coupling said signal across a substance;
- and
- means connected to at least one of the electrodes for measuring the amplitudes of the current or voltage at said selected frequency to detect threshold phenomena associated with and/or atomic or molecular spectra of the substance.
Dependencies are inferred from the claim text.