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Article

Title: Nanofinger sensors made easy

Author: Staff Article Type: Product Analysis
Source: InTech, v51 n2 p16(1) Publication Date: Feb 2004
  ISSN: 0192-303X
  Illustrations: Photographs
URL of Publication: http://www.isa.org

At the Center for Industrial Sensors and Measurement at Ohio State, professor of materials science and engineering and founding director Akbar and his student Sehoon Yoo have devised a new manufacturing process based on 'nanofinger sensors' constructed from low-cost material and divided up into tiny filaments that create a platform for devices that can detect chemicals in the air, clean up toxic chemicals, gather solar energy, or form self-cleaning surfaces. Each filament/nanofinger has one crystal of titanium oxide and is up to 5 micrometers long. A micrometer is one-millionth of a meter, and a nanometer is one- billionth of a meter. The process is a straightforward chemical alternative to the machine-based methods for ceramic carving, says Professor Akbar. A materials science student discovered the process and states that it involves the baking of the ceramic compound titanium dioxide at a high temperature inside a cloud of hydrogen gas. Yoo is not sure how the process works. After testing other materials, Yoo's work with has progressed to a stage where he can turn a penny-sized sample into a rudimentary sensor that detects hydrogen.

Special Features: Photographs

Products:
Nanofilaments Sensors

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