Nanostructured Metal Oxide Sensing Film From Liquid Precursor
- Technology Benefits
- localized formation of metal oxide film simple ink formulation and easy deposition low operating temperature sensitive detection fast response and recovery time
- Technology Application
- chemiresistor or conductometric sensors electrochemical sensors calorimetric sensors catalyst support fuel cell electrode biosensors selective adsorption or absorption for gas separation
- Detailed Technology Description
- None
- Others
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Publication
Additional Technologies by these Inventors
- Hybrid Porous Nanowires for Electrochemical Energy Storage
- Scalable Super-Resolution Synthesis Of Core-Vest Composites Assisted By Surface Plasmons
Tech ID/UC Case
25630/2016-093-0
Related Cases
2016-093-0
- *Abstract
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Nanostructured metal oxide materials have generated much interest for sensing applications due to their high surface area, low thermal mass, and superior performance. However, stable and reproducible integration of these materials into a functional sensor is difficult. Vacuum deposition techniques such as sputtering or evaporation do not offer substantial sensing performance improvement. Sacrificial templating steps have been suggested, but the manufacturing complexity and cost are not suitable for high volume production. There remains a need for a simple, effective method to prepare nanostructured metal oxide films for low power, miniaturized gas sensors with high sensitivity.
Researchers at UC Berkeley have developed a novel method for creating highly porous, nanostructured metal oxide film in a controlled location from a liquid precursor using a localized heat source. This method eliminates processing steps, such as the need to separately synthesize nanomaterials and suspend them into a stable ink for deposition. The localized heat source acts to both evaporate the solvent and thermally decompose the precursor into a highly porous film of nanocrystalline metal oxide, as well as to define the location of the formed film. The utility of this method has been demonstrated for the formation of a tin oxide gas sensor with superior performance, including high sensitivity and fast response and recovery time for carbon monoxide gas. However, the method could be useful for other applications that require localized formation of a porous film of nanocrystalline metal oxide.
- *Principal Investigator
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Name: Anna Claire Harley-Trochimczyk
Department:
Name: Hu Long
Department:
Name: Roya Maboudian
Department:
Name: William Mickelson
Department:
- Country/Region
- USA
