Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
A chemical-responsive field-effect transducer adapted to operate in depletion-mode, or enhancement/ depletion-mode, comprising: a semiconductor material having a pair of adjacent diffusion-regions (1,2) of a certain doping polarity located at the surface and spearated by a channel (3) of the same doping polarity, said diffusion regions and channel region being supported by an insulating substrate (4) or semiconductor substrate of opposite polarity;.electrical insulator (6) and/or ion-barrier material (7) overlying the aforementioned channel region: and an electroactive material (10) overlying said insulator and/or ion barrier, such that the electroactive material can interact with substances to which it is exposed and control the charge-carrier density in the aforementioned channel.
Claim 2
Dependent Claim
107 words
A chemical-responsive field-effect transducer adapted to operate in depletion-mode, or enhancement/ depletion-mode, comprising: a semiconductor material having a pair of adjacent diffusion-regions (1,2) of a certain doping polarity located at the surface and spearated by a channel (3) of the same doping polarity, said diffusion regions and channel region being supported by an insulating substrate (4) or semiconductor substrate of opposite polarity;.electrical insulator (6) and/or ion-barrier material (7) overlying the aforementioned channel region: and an electroactive material (10) overlying said insulator and/or ion barrier, such that the electroactive material can interact with substances to which it is exposed and control the charge-carrier density in the aforementioned channel.
Claim 3
Dependent Claim
31 words
A transducer according to claim 1, wherein said channel has been created by diffusion, ion-implantation, epitaxial growth, or creation of a surface inversion layer by controlled processing techniques or other means.
Claim 4
Dependent Claim
33 words
A transducer according to claim 1 or 2, encapsulated with polymeric materials similar to, and including, Bis-GMA and Bis-GMA urethane adducts, such materials being polymerised by chemical means, thermally, or by U.V. irradiation.
Claim 5
Dependent Claim
28 words
A transducer according to claim 3, in which selective encapsulation is achieved by restricting the area of application of encapsulating agent with an appropriately directed jet of gas.
Claim 6
Dependent Claim
27 words
An array of transducers according to any of claims 1 to 4, in which the individual elements possess similar or dissimilar electroactive materials overlying each channel region.
Claim 7
Dependent Claim
16 words
A transducer device including an element or elements according to any of claims 1 to 5.
Claim 8
Dependent Claim
15 words
Apparatus comprising a transducer or transducer device according to any of claims 1 to 6.
Claim 9
Dependent Claim
7 words
A flow-injection-analysis system according to claim 7.
Claim 10
Dependent Claim
8 words
A flow-through cuvette system according to claim 7.
Claim 11
Independent Claim
43 words
A method of selectively'encapsulating a microelectronic transducer or sensor device, which comprises applying thereto a polymerisable encapsulating material, and effecting polymerisation of said material, characterised in that the area of application of said material is restricted with an appropriately directed jet of gas.
Claim 12
Independent Claim
43 words
A method of selectively'encapsulating a microelectronic transducer or sensor device, which comprises applying thereto a polymerisable encapsulating material, and effecting polymerisation of said material, characterised in that the area of application of said material is restricted with an appropriately directed jet of gas.