Patent Number: 7,132,837

Title: System and method for measuring conductivity on molecular level

Abstract: A conductivity measurement system measures conductivity of molecules. A substance to be measured is applied to the first and second electrodes. A potential is applied across the electrodes. A computer-controlled motion controller moves a first electrode relative to a second electrode in discrete steps. In a first step, the electrodes are brought together in physical contact to form a plurality of molecular junctions. The electrodes are separated by a first distance which breaks a first molecular junction. The electrodes are separated by a second distance which breaks a second molecular junction. A conductivity measure is taken at each step. The process of separating the electrodes continues until conductivity measure is zero. The conductivity of one molecule corresponds to a last non-zero conductivity measurement prior to a zero conductivity measurement.

Inventors: Tao; Nongjian (Scottsdale, AZ)

Assignee: Arizona Board of Regents

International Classification: G01R 27/08 (20060101); G01N 27/453 (20060101)

Expiration Date: 2019-11-07 0:00:00