摘要:
The invention relates to a remotely readable electronic device (10), particularly an implantable device, with an O associated reader (20). The device comprises a resonance circuit (12) that can selectively be set into one of at least three different resonance states, wherein this state can wirelessly be sensed by the remote reader. In a particular embodiment, the resonance circuit (12) comprises two capacitors (C1, C2) that can selectively be connected or disconnected to the resonance circuit (12). The reader (20) preferably scans a given frequency range to detect spectral absorption patterns that correspond to certain resonance states of the resonance circuit (12).
摘要:
A container for containing a perishable substance has a container wall with an inner side and an outer side. The wall has an electrically conductive layer extending between the inner side and the outer side. The inner side faces the space containing the substance. The container comprises electronic circuitry having a sensor for sensing a physical property or condition of the substance, and an antenna for communicating an RF signal to a receiver, external to the container. The RF signal is indicative of the physical property or condition sensed. The sensor is positioned so as to be exposed to the space containing the substance in operational use of the container. The antenna is positioned at the outer side, or between the outer side and the electrically conductive layer, and is electrically isolated from the electrically conductive layer.
摘要:
Disclosed is an integrated circuit comprising an electrode arrangement for detecting the presence of a liquid, said electrode arrangement comprising a first electrode and a second electrode, wherein, prior to exposure of the electrode arrangement to said liquid, a surface of at least one of the first electrode and second electrode is at least partially covered by a compound that is soluble in the liquid; the electrical properties of the electrode arrangement being dependent on the amount of the compound covering said surface. An package and electronic device comprising such an IC and a method of manufacturing such an IC are also disclosed.
摘要:
A biocompatible electrode is manufactured by depositing filling metal 36 and etching back the filling metal to the surface of the surrounding insulator 30. Then, a further etch forms a recess 38 at the top of the via 32. An electrode metal 40 is then deposited and etched back to fill the recess 38 and form biocompatible electrode 42. In this way, a planar biocompatible electrode is achieved. The step of etching to form the recess may be carried out in the same CMP tool as is used to etch back the filling metal 36. A hydrogen peroxide etch may be used.
摘要:
The invention relates to an electrochemical sensor integrated on a substrate, the electrochemical sensor including: a field effect transistor integrated on the substrate and having a source, gate and drain connections, said gate of the field effect transistor including: a sensing gate conductively coupled to a sensing electrode; and a bias gate, wherein the sensing gate is capacitively coupled to the bias gate and the bias gate is capacitively coupled to the substrate.
摘要:
A method of manufacturing an integrated circuit having a substrate comprising a plurality of components and a metallization stack over the components, the metallization stack comprising a first sensing element and a second sensing element adjacent to the first sensing element.
摘要:
Disclosed is a pH sensor comprising a carrier (10) comprising a plurality of conductive tracks and an exposed conductive area (40) defining a reference electrode connected to one of said conductive tracks; a sensing device (30) mounted on the carrier and connected at least one other of said conductive tracks; an encapsulation (20) covering the carrier, said encapsulation comprising a first cavity (22) exposing a surface (32) of the sensing device and a second cavity (24) exposing the exposed conductive area, said second cavity comprising a reference electrode material (42) and an ion reservoir material (44) sharing at least one ion type with said reference electrode material, the reference electrode material being sandwiched between the exposed conductive area and the ion reservoir material. A method of manufacturing such a pH sensor is also disclosed.
摘要:
A sensor senses a magnitude of a physical parameter of the sensor's environment. The sensor has first and second electrodes, and a material layer between them. The material has an electrical property, e.g., capacitance or resistance, whose value depends on the magnitude of the physical parameter. The first electrode is formed in a first layer, and the second electrode is formed in a second layer, different from the first layer. The first layer has a trench and an elevation next to the trench. The trench has a bottom wall and a side wall. The material is positioned on the bottom wall and on the side wall and on top of the elevation. The trench accommodates at least a part of the second electrode. The second electrode leaves exposed the material formed on top of the elevation.
摘要:
A sensor senses a characteristic of an environment, e.g., humidity. The sensor has a substrate with strips of material that is sensitive to corrosion as a result of the characteristic. The strips are configured to respond differently to the characteristic. By means of repeatedly measuring the resistances of the strips, the environment can be monitored in terms of accumulated exposure to the characteristic. The strips are manufactured in a semiconductor technology so as to generate accurate sensors that behave predictably.
摘要:
The invention relates to an electrochemical sensor integrated on a substrate, the electrochemical sensor comprising: a field effect transistor integrated on the substrate and having a source, gate and drain connections, said gate of the field effect transistor comprising: a sensing gate conductively coupled to a sensing electrode; and a bias gate, wherein the sensing gate is capacitively coupled to the bias gate and the bias gate is capacitively coupled to the substrate.