Abstract: A sensor chip includes a substrate and one or more chemo-resistive gas sensing elements attached to the substrate. Each gas sensing element provides a signal depending on one or more gases to be sensed. A catalytic gas filter arrangement includes one or more filter sections, each filter section including a cavity covered with at least one membrane. The at least one membrane is supported by a support structure and includes gas permeable pores. A surface defining the pores includes a catalytic material for degrading one or more of the gases. The gas filter arrangement is arranged so at least one of the chemo-resistive gas sensing elements is exposed to a filtered mixture of the gases in the cavity of one of the filter sections. The filtered mixture of gases is obtained by filtering the ambient mixture of the one or more gases with the one of the filter sections.

Abstract: An apparatus includes a semiconductor-based substrate with a functional structure that is formed in or on the semiconductor-based substrate. The apparatus includes a frame structure surrounding the functional structure and includes a coating that covers the functional structure and is delimited by the frame structure.

Abstract: A gas sensing device includes chemo-resistive gas sensors, wherein each of the gas sensors generates signals corresponding to concentrations of gases in a mixture of gases; a heating arrangement for heating gas sensors according to a periodic temperature profile; a preprocessing processor for receiving the signals from each of the gas sensors and for preprocessing the received signals to generate a preprocessed signal sample for each of the gas sensors for each period of the periodic temperature profile; a feature extraction processor configured for receiving the preprocessed signal samples and for extracting for each of the periods a set of feature values from the preprocessed signal samples received for the respective period; and a gas concentration processor for receiving sets of feature values.

Abstract: A gas sensing device includes chemo-resistive gas sensors; heating elements for heating each of the gas sensors; an information extraction block for receiving signal samples and for generating representations for the received signal samples; and a decision making block configured for receiving the representations, wherein the decision making block comprises a weighting block and a trained model based algorithm stage, wherein the weighting block receives feature samples of the representations and applies time-variant weighting functions to the feature samples of the respective representation in order to calculate a weighted representation including weighted feature samples.

Abstract: A temperature-regulated chemi-resistive gas sensor includes a sensor surface including a chemically sensitive sensor layer including an active material for adsorbing and desorbing gas molecules of an analyte gas. A predetermined time-continuous periodic temperature profile is applied for periodically heating the sensor surface. An electrical sensor layer conductance signal is determined and time windows are applied to the sensor layer conductance signal. For one or more of the time windows, discrete frequency spectrum data of the sensor layer conductance signal is obtained, and a current gas concentration of the analyte gas is determined based on the obtained discrete frequency spectrum data.

Abstract: A gas sensing device comprises a sensing unit for sensing a target gas, the sensing unit comprising a carbon-based sensing layer which is sensitive to the target gas. The gas sensing device further comprises a controller unit for monitoring an exposure of the sensing layer to the target gas. The controller unit further initializes a recovery sequence for the sensing unit depending on an exposure of the sensing unit to the target gas. Further, the gas sensing device comprises a heating electrode for heating the sensing layer during the recovery sequence.

Abstract: A method for producing a nanofilm includes providing a microsieve having a first and a second opposite surface region, wherein micropores are formed between the first and second surface regions; applying a nanomaterial suspension on the first surface region of the microsieve, wherein the nanomaterial suspension comprises nanomaterial particles; and creating a pressure difference at a plurality of the micropores between the first and second surface region of the microsieve in order to move the nanomaterial suspension into the micropores and/or through the micropores, such that the nanomaterial particles adhere to the first surface region and to the wall regions of the micropores and form the nanofilm.

Abstract: An apparatus includes a semiconductor-based substrate with a functional structure that is formed in or on the semiconductor-based substrate. The apparatus includes a frame structure surrounding the functional structure and includes a coating that covers the functional structure and is delimited by the frame structure.

Abstract: An apparatus includes a semiconductor-based substrate with a functional structure that is formed in or on the semiconductor-based substrate. The apparatus includes a frame structure surrounding the functional structure and includes a coating that covers the functional structure and is delimited by the frame structure.

Abstract: According to an embodiment, a composite material includes a graphene material, a carbon nanotube material, and a metal-containing material including at least one metal element.

Abstract: A gas sensing device includes chemo-resistive gas sensors; heating elements for heating each of the gas sensors; an information extraction block for receiving signal samples and for generating representations for the received signal samples; and a decision making block configured for receiving the representations, wherein the decision making block comprises a weighting block and a trained model based algorithm stage, wherein the weighting block receives feature samples of the representations and applies time-variant weighting functions to the feature samples of the respective representation in order to calculate a weighted representation including weighted feature samples.

Abstract: An apparatus includes a semiconductor-based substrate with a functional structure that is formed in or on the semiconductor-based substrate. The apparatus includes a frame structure surrounding the functional structure and includes a coating that covers the functional structure and is delimited by the frame structure.

Abstract: A method for producing a nanofilm includes providing a microsieve having a first and a second opposite surface region, wherein micropores are formed between the first and second surface regions; applying a nanomaterial suspension on the first surface region of the microsieve, wherein the nanomaterial suspension comprises nanomaterial particles; and creating a pressure difference at a plurality of the micropores between the first and second surface region of the microsieve in order to move the nanomaterial suspension into the micropores and/or through the micropores, such that the nanomaterial particles adhere to the first surface region and to the wall regions of the micropores and form the nanofilm.

Abstract: A gas sensor for measuring a concentration of carbon dioxide in a gas environment (GE) is provided. The gas sensor includes a graphene layer having a side facing towards the gas environment (GE), an electrode layer including a plurality of electrodes electrically connected to the graphene layer, and a chalcogenide layer covering at least a part of the side of the graphene layer facing towards the gas environment (GE).

Abstract: Various embodiments relate to a gas sensor, including: a carrier, an electrode structure; and a sensor layer in contact with the electrode structure, wherein the sensor layer includes or essentially consists of turbostratic graphite.

Abstract: A gas sensor for measuring a concentration of carbon dioxide in a gas environment (GE) is provided. The gas sensor includes a graphene layer having a side facing towards the gas environment (GE), an electrode layer including a plurality of electrodes electrically connected to the graphene layer, and a chalcogenide layer covering at least a part of the side of the graphene layer facing towards the gas environment (GE).