Nano-porous membrane based sensors
First Claim
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1. A sensor, comprising:
- a solid substrate having a top surface;
a nano-porous alumina membrane situated at the top surface of the solid substrate, the alumina membrane including a plurality of nano-pores that do not extend through the alumina membrane, the alumina membrane including a first sensitizing agent for detection of a target compound, the first sensitizing agent being immobilized within a first set of nano-pores so as to define a sensitized portion of the alumina membrane; and
a first conductor electrically coupled to the first sensitizing agent immobilized in the first set of nano-pores defined in the alumina membrane, the first conductor situated on the top surface of the solid substrate and in contact with the sensitized portion of the alumina membrane.
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Abstract
Sensors include nano-porous alumina membranes that are sensitized by immobilization of antibodies in the nano-pores. The nano-membranes can be sensitized to respond to a single target compound, or different portions of the nano-membrane can be differently sensitized. Capture of the target compound can be detected based on a spectral signature associated with electrical conductance in the nano-pores.
8 Citations
18 Claims
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1. A sensor, comprising:
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a solid substrate having a top surface; a nano-porous alumina membrane situated at the top surface of the solid substrate, the alumina membrane including a plurality of nano-pores that do not extend through the alumina membrane, the alumina membrane including a first sensitizing agent for detection of a target compound, the first sensitizing agent being immobilized within a first set of nano-pores so as to define a sensitized portion of the alumina membrane; and a first conductor electrically coupled to the first sensitizing agent immobilized in the first set of nano-pores defined in the alumina membrane, the first conductor situated on the top surface of the solid substrate and in contact with the sensitized portion of the alumina membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 14, 15, 16, 17, 18)
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9. An apparatus, comprising:
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a base substrate having a plurality of conductor segments defined thereon; a nano-porous membrane secured to the base substrate, the nano-porous membrane including a plurality of sets of sensitized nano-pores that do not extend through the nano-porous membrane, the nano-pores having respective sensitizers for detection of a target compound, the sensitizers being immobilized within the sets of nano-pores, and the respective sensitizers electrically coupled to corresponding conductor segments; and a fluid chamber configured to receive a test fluid and communicate the test fluid to the sets of sensitized nano-pores. - View Dependent Claims (10, 11, 12, 13)
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Specification