| 摘要 |
A sensor comprises a substrate (11) and a sensing portion (12) formed thereon the sensing portion having a sensing surface comprising a plurality of upstanding and/or recessed portions which improve the interaction between the sensor and the parameter to be measured. The sensor may detect chemical or physical interaction with the object or quantity to be detected and may detect gases, humidity, ions, biological materials, electromagnetic waves or temperature, either directly or indirectly. Gases may be sensed by absorption effects or reactivity with the sensor causing resistance or EMF changes or by physical properties of the gas such as thermal conductivity or infrared absorption. Biological materials may be sensed with the sensing portion comprising an active material and a gas, light or heat change or luminescence being sensed. Temperature may be sensed by making the detector a thermistor, thermocouple or IR detector. <IMAGE> |
