Chemical sensor using semiconducting metal oxide nanowires

Active solid-state devices (e.g. – transistors – solid-state diode – Field effect device – Responsive to non-optical – non-electrical signal

Reexamination Certificate

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C257S043000, C257SE29070, C257SE29245, C977S936000, C977S938000

Reexamination Certificate

active

07394118

ABSTRACT:
Indium oxide nanowires are used for determining information about different chemicals or Biologics. Chemicals are absorbed to the surface of the nanowires, and cause the semiconducting characteristics of the Nanowires to change. These changed characteristics are sensed, and used to determine either the presence of the materials and/or the concentration of the materials. The nanowires may be between 10 and 30 nm in diameter, formed using a comparable size particle of catalyst material. The nanowires may then be used as part of the channel of a field effect transistor, and the field effect transistor is itself characterized.

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