Abstract:
An electro-thermal based device comprises a heater (11), a readout circuit (14), a digital controller (16) having a first input (17) coupled to a first output (18) of the readout circuit (14), and a digital sigma-delta modulator (19) having a first input (20) coupled to an output (21) of the digital controller (16) and an output (22) coupled to the heater (11).
Abstract:
A device including a substrate and a channel formed in a layer disposed on the substrate. The layer includes a cavitation layer and a passivation layer to mitigate the effects of hydrodynamic cavitation on a surface of the channel. The passivation and cavitation material and thickness are optimized thermally to nucleate and eject a bubble at low voltages. A resistive heating element is disposed within the channel that is activated to create a micro-fluidic pump to advance a fluid through the channel. A sensor is disposed within the channel to measure a characteristic of the fluid passing through the channel.
Abstract:
The semiconductor device comprises a substrate (1) of semiconductor material, a dielectric layer (2) on the substrate, an electrically conductive contact pad (3) arranged in the dielectric layer, a hot plate (4) arranged in the dielectric layer, a recess (9) of the substrate at the location of the hot plate, and an integrated circuit (18), which operates the hot plate. An electrically conductive layer (14) is arranged on a side of the substrate opposite the dielectric layer. The substrate is provided with a via hole (8) above the contact pad, and an electrically conductive material (12) connecting the electrically conductive layer with the contact pad is applied in the via hole. The recess (9) and the via hole (8) are formed in the same process step.
Abstract:
One embodiment provides a method of determining an unknown degree of crystallinity, the method comprising: constructing a master curve plot comprising a plurality of reference curves, each reference curve representing a relationship between electrical resistivity and temperature for one of a plurality of reference alloy samples having a chemical composition and various predetermined degrees of crystallinity; for an alloy specimen having the chemical composition and the unknown degree of crystallinity, obtaining a curve representing the electrical resistivity and temperature thereof; and determining the unknown degree of crystallinity by comparing the curve to the master curve plot.
Abstract:
Es wird ein Mikromechanisches Substrat angegeben, das wenigstens zwei separate einkristalline Siliziumschichten aufweist und das in einem Teilbereich eine Membran aufweist, wobei die Dicke der Membran weniger als 20 μm beträgt und wobei die Membran einen Teil einer ersten der einkristallinen Siliziumschichten umfasst, weiterhin mit einem Beheizungselement, as ausgestaltet ist, in wenigstens einem Teil der Membran eine Temperatur von mehr als 650°C zu erzeugen, sowie mit wenigstens einer Diffusionssperrschicht zur Verminderung der Oxidation der ersten einkristallinen Siliziumschicht.
Abstract:
The invention relates to a gas analysis apparatus comprising a measuring head. Chambers with specifically sensitive semiconductor gas sensors or semiconductor gas sensors of the same kind are located in said measuring head, are covered by a lid and are only released for aeration by means of a hole in said lid. Said design enables reception of gas-specific sensor signal temperature profiles, reduction of the time required for the determination of a corresponding gas component and simultaneous increase in the selectivity of the gas analysis apparatus.
Abstract:
A device includes at least one well to receive a polymerase chain reaction (PCR) mixture. The at least one well includes a bottom comprising an electrically resistive sheet and a carrier layer. The electrically resistive sheet is to receive a signal from a signal source to generate heat to cause a pulse-controlled amplification, thermal cycling zone in close thermal proximity to the bottom. The resistive sheet includes a first portion and a single unitary first opening aligned in a central portion of the well to enable optical detection of fluorophores from reaction of the PCR mixture in the thermal cycling zone. The transparent carrier layer is co-extensive with at least the first opening to contain the PCR mixture within the at least one well and to permit the optical detection.