Micronas Gmbh

Micronas Holding Gmbh

Albert-ludwigs-universitat Freiburg

Innovative Sensor Technology Ist Ag

Innovative Sensor Technology Ist Ig

Endress+hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh+co. Kg

Mirko Lehmann

Ingo Freund

G&uuml;nter Igel

Werner Baumann

Ralf Ehret

Hans-J&uuml;rgen Gahle

Holger Klapproth

Ulrich K Sieben

Bernhard Wolf

Martin Brischwein

Gilbert Alexander Erdler

Heinz-Peter Frerichs

Holger Reinecke

Jiri Holoubek

Mirko Frank

Guenter Igel

Christoph Wilbertz

Markus Rogalla

Günter Igel

Hans-Jurgen Gahle

Claas Müller

Claas Mueller

Jürgen Rühe

Josef Vlk

Class Müller

Hans-Jürgen Gahle

Josef Vik

Sonja Mohry

Hans-J&ouml;rg Gahle

JDJeyaprakash S Samuel

Claas Dr Müller

A planar heating element comprising a PTC resistive structure, which is arranged in a defined surface region of a first surface of a support substrate. The electrical connection contacts for connection to an electrical voltage source are associated with the PTC resistive structure, wherein the PTC resistive structure&#x2014;starting from the two electrical connection contacts&#x2014;has at least one internal conductive trace and a parallel connected, external conductive trace. The internal conductive trace has a greater resistance than the external conductive trace and the resistances of the internal conductive trace and external conductive trace are so sized that upon applying a voltage an essentially uniform temperature distribution is present within the defined surface region.

Planar heating element with a PTC resistive structure

The invention relates to a planar heating element () comprising a PTC resistive structure (), which is arranged in a defined surface region () of a first surface () of a support substrate (), wherein electrical connection contacts () for connection to an electrical voltage source () are associated with the PTC resistive structure (), wherein the PTC resistive structure ()&#x2014;starting from the two electrical connection contacts ()&#x2014;has at least one internal conductive trace () and a parallel connected, external conductive trace (), wherein the internal conductive trace () has a greater resistance than the external conductive trace () and wherein the resistances of the internal conductive trace () and external conductive trace () are so sized that upon applying a voltage an essentially uniform temperature distribution is present within the defined surface region ().

The present invention pertains to a fuel cell with a storage unit () for storing hydrogen (H), with a proton conductive layer, which covers a surface of the storage unit (), and with a cathode () on a side of the proton conductive layer, which side is located opposite, wherein the storage unit () is directly coupled with an anode and/or the storage unit () is incorporated in a substrate () of a semiconductor. The storage unit () is preferably connected to the substrate () at least via a stress compensation layer ().

Fuel cell and proces for manufacturing a fuel cell

Fuel cell and process for manufacturing a fuel cell

A measurement device has at least one sensor for detecting a parameter, a data storage unit, and a power supply for said sensor and data storage unit. In addition to the first sensor, the measurement device has at least one second sensor connected to the power supply and to the data storage unit. The second sensor is provided for detecting a physical quantity acting on the first sensor and is capable of permanently altering the measurement characteristic of the first sensor. An evaluator functions coactively with the second sensor and the data storage unit so that the permanent alteration of the measurement characteristic of the first sensor is recordable as a function of the measurement signal of the second sensor.

Measurement device with at least one sensor

The invention relates to a moisture sensor which comprises a receiving area on its surface for a moisture film, the layer thickness of which is dependent on the relative humidity in the surrounding of the receiving area. The moisture sensor has a signal source which is connected to at least one control electrode at at least one infeed, the electrode abutting the receiving area, for providing a control voltage to the moisture film. The moisture sensor comprises at least one potential sensor which has at least one sensor area, under the receiving area, which is spaced apart from the at least one infeed. The sensor area is electrically insulated from the receiving area by an insulation layer, located between the sensor area and the receiving area, in such a way that an electrical potential can be capacitively detected by means of the potential sensor, the potential being dependent on the layer thickness of the moisture film and the control voltage.

Moisture sensor and method for measuring moisture of a gas-phase medium

An electric component comprising a sensor and/or actuator chip with a substrate on which a passivating layer and a sensor and/or actuator structure consisting of an active surface area is arranged. The chip is surrounded by an encapsulation having an opening which forms an access to the at least one active surface area. A layer stack is arranged on the substrate, said stack of layers comprising from the passivating layer to the substrate at least one first strip conductor layer, a first electric insulating layer, a second strip conductor layer and a second electric insulating layer. The first conductor strip layer is fully arranged outside the area of the chip covered by the opening. At least one conductor strip of the second conductor strip layer is connected to the sensor and/or actuator structure.

Electric component

A device for investigating activities of cell cultures in a liquid culture medium includes a receptacle for the culture medium, and one or more sensors for measurement of cell culture activities. An opening for adding and removing liquid culture medium is provided. A separating element can be placed close to the receptacle bottom, forming a partial space with a small volume relative to the entire volume. A flow channel that communicates with the small volume and the reservoir and/or the sensors are placed in the small volume partial space. By adjustment of the separating element distance from the receptacle bottom, a microreaction volume exactly fitting the current requirements is obtained. For regeneration of the cell culture solution in the small volume partial space, the separating element can be elevated and depressed, or liquid can be injected into the small volume by the through-flow channel, providing convective mixing of fresh and spent medium.

Device for performing analysis on cell cultures

A device includes a carrier element with a surface prepared for direct or indirect coupling or receiving of cells, at least one optical detector to receive a luminescence signal, the detector being integrated into the carrier element below the prepared surface, a cover covering the prepared surface to form a cavity, the cover having an inlet opening and an outlet opening, and an excitation source connected to the inlet opening. The excitation source constitutes a reservoir for a chemical or biological excitation substance or medium that influences the metabolism of the cell, with metabolic processes being made visible by luminescence and detected by at the least one optical detector.

Device and method for detecting cellular processes by means of luminescence measurements

A microsystem consists of at least one sensor and/or actuator, a signal processor and/or control mechanism linked therewith, a timer, and an electrical energy storage unit providing a current source for at least the signal processor and/or control mechanism. The signal processor and/or control mechanism has a mode switching mechanism, by means of which it can be set to an operating mode and a resting mode that consumes less current compared with the operating mode. The mode switching mechanism has at least one control signal input which is electrically connected to the timer for application of a mode switching signal. The timer is a mechanical timer, which has at least one micromechanical cantilever, which is coupled with at least one electrical element connected to the at least one control signal input of the signal processor and/or control mechanism in such a way that said electrical element is time-dependently set.

Microsystem

In a method for structuring the surface of a substrate, a substrate is elastically expanded by the application of a tensile stress so that a surface area of the substrate in which a structure is to be created, is enlarged. Then, in the surface area, a structure is produced that is larger than the structure to be produced. For this purpose at least one solution is applied to the substrate, which solvent contains at least one solid substance dissolved in a solvent. The solvent is then removed from the surface of the substrate so that the solid substance remains behind. The expansion of the substrate is at least partly reversed by the reduction or removal of the tensile stress so that the size of the structure is reduced to the size of the structure to be produced. In the material of the substrate, a compression stress can also be created to reduce the size of the structure to the size of the structure to be produced.

Method for structuring a substrate surface

In a method for producing a sensor arrangement and the resulting sensor arrangement, a sensor is provided on or in a chip and the chip is covered with a protective cover, the cover being an interface between the sensor and the environment. An adhesive layer is provided between the chip and the protective cover, the adhesive layer alone or together with the protective cover being an interface between the sensor and the environment. The protective cover and/or the adhesive layer may have a channel formed therein, the channel functioning as the reception channel for a sensor. In an alternative embodiment, the protective cover placed on a wafer with several chips, and the wafer is cut up to produce the individual chips with the protective cover. Thus, a sensor arrangement may have the protective cover applied to the individual chip after the chip is cut from the wafer, or the protective cover may be applied to the wafer, and the wafer and cover are then cut up into the individual chips and corresponding covers. The channel leading from one side of the arrangement to the sensor may be taken through the adhesive layer, through the protective cover, or through both. A hole may be formed in the protective cover above the sensor, with the sensor lying loosely in the hole. The reaction volume may be determined by the dimensions of the hole.

Method for producing a sensor or actuator arrangement, and corresponding sensor or actuator arrangement

A device for detecting a gas or gas mixture having at least one first gas sensor designed as an SGFET and at least&#x2014;one second, additional gas sensor designed as a Lundstr&#xf6;m-FET. The gas sensors are connected to a processing device designed to analyze the measurement signals from both types of gas sensors in order to detect the gas or gas mixture.

Device for detecting a gas or gas mixture

A process is provided for the intracellular manipulation of a biological cell () which is positioned adhering to a support area () in a culture medium (). Inside the support area () for the cell () an opening into the membrane of the cell () is created spaced from its support edge. The edge of the cell membrane surrounding the opening, adhering to the support area (), thus seals off the cell fluid situated in the interior of the cell () from the culture medium () and insulates the cell fluid against the culture medium (). The interior of the cell () is manipulated through the opening. An apparatus for implementing the process is also provided, including an object carrier () with a support area () for adhering the cell and a poration tool () for creating the opening in the cell membrane. The poration tool () may be any of various chemical, mechanical and/or electrical devices.

Growing community of inventors

Freiburg, Germany

Mirko Lehmann