Modification of selectivity for sensing for nanostructure sensing device arrays
First Claim
1. An electronic system for selectively detecting and identifying a plurality of chemical species, comprising an array of nanostructure sensing devices, each nanostructure sensing device comprising at least one nanostructure and having a selectivity for sensing the chemical species, wherein the selectivity of the at least one nanostructure sensing device differs from the selectivity of at least one other nanostructure sensing device, further comprising, in each nanostructure sensing device in the array of nanostructure sensing devices, a contact electrode, and a counter electrode, electrically isolated from the contact electrode.
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Abstract
An electronic system for selectively detecting and identifying a plurality of chemical species, which comprises an array of nanostructure sensing devices, is disclosed. Within the array, there are at least two different selectivities for sensing among the nanostructure sensing devices. Methods for fabricating the electronic system are also disclosed. The methods involve modifying nanostructures within the devices to have different selectivity for sensing chemical species. Modification can involve chemical, electrochemical, and self-limiting point defect reactions. Reactants for these reactions can be supplied using a bath method or a chemical jet method. Methods for using the arrays of nanostructure sensing devices to detect and identify a plurality of chemical species are also provided. The methods involve comparing signals from nanostructure sensing devices that have not been exposed to the chemical species of interest with signals from nanostructure sensing devices that have been exposed to the chemical species of interest.
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Citations
12 Claims
- 1. An electronic system for selectively detecting and identifying a plurality of chemical species, comprising an array of nanostructure sensing devices, each nanostructure sensing device comprising at least one nanostructure and having a selectivity for sensing the chemical species, wherein the selectivity of the at least one nanostructure sensing device differs from the selectivity of at least one other nanostructure sensing device, further comprising, in each nanostructure sensing device in the array of nanostructure sensing devices, a contact electrode, and a counter electrode, electrically isolated from the contact electrode.
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