Patent ID: 6903433
Filing Date: 2005-06-07
Classification: G01N,H01L

Abstract:
1. An apparatus comprising: a metal-semiconductor Schottky diode, characterized by an ultrathin metal film being less than 100 Angstroms thick located on a portion of a silicon substrate which together form a Schottky barrier that has current-voltage characteristics of a diode which enables detection of a surface adsorbate on said ultrathin metal film, wherein the presence of said surface adsorbate creates a measurable current due to production of electrons or holes that have sufficient energy to transverse said ultrathin metal film and cross said Schottky barrier; and at least one zero force electrical contact, each zero force contact includes a metalized contact connected to said ultrathin metal film where the metalized contact is deposited on an oxide layer on top of said silicon substrate and said ultrathin metal has a portion of which is deposited on top of an inclination in the oxide layer before being connected to the metalized contact.