Abstract:
Ein MEMS-Mediensensor, insbesondere MEMS-Gassensor, umfassend zumindest zwei Elektroden, die mittels einer Trägerschicht elektrisch getrennt voneinander angeordnet sind, wobei auf der Trägerschicht ein medien-sensitives Material zur elektrischen Verbindung der beiden Elektroden aufgebracht ist, wobei ein Oberflächenbereich zum Aufbringen des medien-sensitiven Materials auf der Trägerschicht eine Topographie aufweist, welche an eine Partikelgröße von Partikeln des medien-sensitiven Materials angepasst ist.
Abstract:
A moisture-sensitive device is provided that includes a fluid-sensitive battery. Exposure of the battery to urine or some other fluid causes the battery to provide a voltage that can be used to power a transmitter. The transmitter can then provide a wireless transmission indicative of the battery having been exposed to the fluid. This moisture-sensitive device can be provided in a diaper and transmissions produced by the device can be detected using a smart phone or other device and used to indicate to a user that the diaper has been soiled. By powering the transmitter using the fluid-sensitive battery and storing the battery in a dry state, such a device can be stored for a protracted period of time before use.
Abstract:
Disclosed are sensors that include a carbon nanotube channel and a non-fouling polymer layer, where the non-fouling polymer layer and the carbon nanotube channel do not directly contact each other and are separated by a dielectric layer. The disclosed sensors may be used, e.g., as biosensors for the accurate and sensitive detection of analytes within a sample. Also disclosed are methods of making and using the sensors.
Abstract:
La presente invención se refiere a una nanoestructura caracterizada porque está compuesta por una o múltiples láminas concéntricas alrededor de un núcleo de carbono o vacío, comprendiendo dicha al menos una o múltiples láminas concéntricas al menos uno entre los siguientes componentes en forma cristalina o policristalina: silicio intrínseco, germanio intrínseco, silicio dopado p o n, germanio dopado p o n, aleaciones de silicio y germanio intrínsecos, aleaciones de silicio y germanio dopados p o n, óxido de silicio, óxido de germanio, nitruro de silicio y nitruro de germanio, o una combinación de los mismos. Así mismo, la presente invención también se refiere a la fabricación y a los usos de dicha nanoestructura.
Abstract:
The present invention relates to gas sensors and gas sensor arrays, and methods of their formation. The gas sensors and gas sensor arrays according to the present invention comprise nanomaterials.
Abstract:
본 발명은 수소를 감지하는 감지 센서에 관한 것이다. 본 발명의 감지 센서는 수소와 반응하여 저항값이 변화하는 코어, 코어에 연결되는 적어도 두 개의 전극들, 적어도 두 개의 전극들 중 하나에 연결되고, 제어 신호에 응답하여 저항값이 변화하는 가변 저항을 포함하고, 코어는 박막 형태를 갖는 팔라듐, 및 팔라듐에 도포되고, 박막 형태를 갖는 그래핀을 포함한다.
Abstract:
A sensor comprises: an electrically comprises a switchable polymeric element. The polymeric element has at least a first electrical state and a second electrical state and is switchable between the first and second electrical states as a function of predefined environmental changes. The sensor comprises a polymeric matrix sensitive to non-aqueous chemistry and a plurality of conductive particles embedded in the polymeric matrix.
Abstract:
The invention discloses a printed gas sensor comprising a metalloporphyrin dye, having a first and second mode, and a nanoporous carrier material comprising a plurality of particles with a size less than 5μιτι, said plurality of particles having a plurality of pores with a pore size in the range 5-50nm, wherein said metalloporphyrin dye is bound to said nanoporous carrier material. The invention further discloses a method of preparing a gas sensing composition for detection of food status as well as a digital expiry date device system. The digital expiry date device system comprises a packaging material having an inner surface and an outer surface; a first transponder disposed on said inner surface and a second transponder disposed on said outer surface; a sensor portion electrically connected to said first transponder for detecting food status and communicate said status to said second transponder, wherein said sensor portion comprises a metalloporphyrin dye to configure said sensor portion for an impedance change upon binding of a gaseous analyte to said metalloporphyrin dye; and a printed numerical array.
Abstract:
A single-walled carbon nanotube-based micron scale multiplex biosensor is provided that enables the detection of glucose, lactate, and urea. The sensor is based on modification of semiconducting single-walled carbon nanotubes using a linker that non-covalently associates with the nanotubes and covalently couples to an enzyme. Reaction of a physiological substrate with the enzyme results in increased resistance of the nanotubes within the sensor. The sensor is suitable for use in patient monitoring, particularly in a clinical setting. Incorporation of read out electronics and an RF signal generator into the sensor device enables it to communicate to a relay station or remote receiver. Methods are also provided for fabricating the biosensor device and using the device for detection.
Abstract:
A sensor is provided for measuring the presence or amount of an ionic analyte in an electrolyte solution. The sensor comprises (i) two electrically conducting electrodes on an electrically insulating substrate, and separated by a distance L, where L is between 10 nm and 100 μm; (ii) a chemiresistor film, wherein the impedance of the chemiresistor film changes in the presence of an ionic analyte; and wherein the chemiresistor film is in contact with the electrodes; (iii) a gate electrode formed from an electrically conductive material; (iv) a potential generator means configured to apply an electrical potential difference between the gate electrode and the chemiresistor film; (v) a controller to selectively control the potential generator means to apply either a positive electric potential or a negative electric potential to the gate electrode relative to the potential of the chemiresistor film; and (vi) a voltage means adapted to apply a voltage signal between said pair of electrically conducting electrodes to enable measurement of the resistance of the chemiresistor film.