Abstract: A device for the detection of analytes comprises a substrate (10) with nano-antennas (11,12). The nano-antennas (11,12) comprise an antenna material (11m, 12m) for forming resonant antenna structures which receive and resonantly interact with source light (L0) to form respective resonance peaks (R1,R2) over a resonant wavelength range (A1,A2) overlapping respective signature wavelength (?1,?2) of a target analyte (A). The resonant interaction causes a locally concentrated field (Ec) of the source light (L0) in the resonant wavelength range (?1,?2). The concentrated intensity (Ic) is localized around a respective target location (T1,T2) which is provided with a sorption material (11s, 12s) that sorbs the target analyte (A). This provides a locally increased analyte concentration (Ac) of the target analyte (A) coinciding with the locally concentrated field (Ec) of the source light (L0). Accordingly, the interaction of the source light (L0) with the target analyte (A) is enhanced.

Abstract: A sensor system, the manufacturing of such system, and the use of such system for optical detection of a target analyte in a gaseous medium are described. The sensor system includes a hollow waveguide that is provided with a reflective mirror layer along its inner wall and a concentrating coating of an inorganic sorption material. The mirror layer defines a light path for guiding light between a light inlet and a light outlet that are provided on opposing terminal ends of the hollow waveguide. The concentrating coating increases an effective concentration of target analytes, if present, and allows optical, preferably spectroscopic, analysis of the medium by recording transmission of light, preferably infrared light, guided through the hollow waveguide.

Abstract: A method is described of manufacturing an optical sensing element for detecting a presence and/or determining a concentration of an analyte in a fluid medium, in particular in an aqueous medium. The optical sensing element includes an optical waveguide (e.g. an optical fiber) comprising an optically transparent material for guiding light through the sensing element along a flightpath. The optical sensing element further includes an inorganic coating for adsorbing the analyte from the fluid medium and an adhesion promotion layer formed between the optical waveguide and the inorganic coating. The adhesion promotion layer includes an adhesion promotion material for promoting adhesion of the inorganic material.

Abstract: The present disclosure concerns a device for identifying a chemical composition of particulate matter comprised in an aerosol. The device comprises an impactor arranged to divert a received aerosol stream to a sensing stream having an increased particulate matter concentration. The device further comprises an optical flow cell arranged to guide a received sensing stream along an elongate hollow wave guide defining a gas flow path and an optical path following at least in part a common trajectory so as to allow light travelling along said common trajectory to interact with the particulate matter comprised in the sensing stream. A chemical composition of the particulate matter comprised in an aerosol may be determined from a particle specific absorption peak. A particle concentration may be determined from a peak intensity.

Abstract: The invention relates to a particle detection device and a method for detecting particles in a fluid by means of separation. A channel structure is arranged for separating an incoming flow into a major flow comprising a minor portion of particles above the first predetermined size and a minor flow comprising a major portion of particles above the predetermined size. One or more detectors are arranged for detecting particles in the major flow and minor flow. The channel structure further comprises a choked flow restriction arranged for enabling a constant flow independent of pressure conditions.

Abstract: The invention relates to a capacitive sensing material and a method of manufacturing thereof, a capacitive sensing coating formulation, a capacitive chip, a capacitive sensor, a method for manufacturing a coated chip, a method for analysing the composition of a gaseous mixture, a use of particles comprising titanium oxide and platinum for sensing hydrogen, and a use of capacitive sensing material for detecting a gas leak. The capacitive sensing material comprises composite particles wherein porous titanium dioxide is at least in part coated with platinum particles.

Abstract: A device for the detection of analytes comprises a substrate (10) with nano-antennas (11,12). The nano-antennas (11,12) comprise an antenna material (11m, 12m) for forming resonant antenna structures which receive and resonantly interact with source light (L0) to form respective resonance peaks (R1,R2) over a resonant wavelength range (A1,A2) overlapping respective signature wavelength of a target analyte (A). The resonant interaction causes a locally concentrated field (Ec) of the source light (L0) in the resonant wavelength range (A1,A2). The concentrated intensity (Ic) is localized around a respective target location (T1,T2) which is provided with a sorption material (11s, 12s) that sorbs the target analyte (A). This provides a locally increased analyte concentration (Ac) of the target analyte (A) coinciding with the locally concentrated field (Ec) of the source light (L0). Accordingly, the interaction of the source light (L0) with the target analyte (A) is enhanced.

Abstract: The invention relates to a particle detection device and a method for detecting particles in a fluid by means of separation. A channel structure is arranged for separating an incoming flow into a major flow comprising a minor portion of particles above the first predetermined size and a minor flow comprising a major portion of particles above the predetermined size. One or more detectors are arranged for detecting particles in the major flow and minor flow. The channel structure further comprises a choked flow restriction arranged for enabling a constant flow independent of pressure conditions.

Abstract: The invention relates to a method for analyzing the composition of a gaseous stream comprising at least two gaseous components, one of which is methane; and to a sensor array and a gas sensor comprising such sensor array. The method comprises contacting the gaseous mixture with a sensor, wherein the sensor comprises a sensor array comprising at least two sensor elements, wherein each of said sensor elements comprises a transducer coated with a coating comprising a polymeric material having at least one property that is responsive to one or more of said gaseous components when exposed thereto, wherein said sensor elements differ at least in the composition of the coating, providing an energy input to said transducers that is converted to output signals based on said property, and obtaining said output signals.

Abstract: The invention relates to a method for analyzing the composition of a gaseous stream comprising at least two gaseous components, one of which is methane; and to a sensor array and a gas sensor comprising such sensor array. The method comprises contacting the gaseous mixture with a sensor, wherein the sensor comprises a sensor array comprising at least two sensor elements, wherein each of said sensor elements comprises a transducer coated with a coating comprising a polymeric material having at least one property that is responsive to one or more of said gaseous components when exposed thereto, wherein said sensor elements differ at least in the composition of the coating, providing an energy input to said transducers that is converted to output signals based on said property, and obtaining said output signals.

Abstract: The invention relates to an optical waveguide having a Fibre Bragg Grating, which waveguide is provided with a coating having a nanoporous sensor material, the sensor unit further having an optical detection unit for detecting a change in an optical property of the waveguide, wherein the grating is present in the core of the waveguide and the coating at least substantially surrounds the grating. The coating is expandable or shrinkable under the influence of the chemical substance, thereby causing a change in axial strain in the grating when the sensor material is exposed to the chemical substance, which change is detectible by a optical detection unit.

Abstract: The invention relates to a sensor system comprising a waveguide, which waveguide comprises a grating in at least a part of the waveguide, which waveguide further comprises a coating, the coating comprising a polymer, which polymer comprises a chain, in which chain are present an aromatic group and a chemical group selected from the group of sulfonyl groups, carbonyl groups, carbonate groups, fluorocarbon groups, siloxane groups, pyridine groups and amide groups.

Abstract: The invention relates to a sensor for measuring an environmental effect, comprising a sensor material having an internal stress, which sensor material is designed to at least partially relax under the influence of the environmental effect. The sensor further comprising a detection unit for indirectly or directly detecting said relaxation. The invention also relates to a waveguide, comprising a grating in at least a portion of the waveguide, which waveguide comprises a coating, the coating comprising a polymer that contains reversible crosslinks that can be broken by the environmental effect in such a way that the polymer changes shape. The invention further relates to a sensor system comprising a waveguide, a light source, and a photo-detector.

Abstract: The invention relates to a sensor system comprising a waveguide, which waveguide comprises a grating in at least a part of the waveguide, which waveguide further comprises a coating, the coating comprising a polymer, which polymer comprises a chain, in which chain are present an aromatic group and a chemical group selected from the group of sulfonyl groups, carbonyl groups, carbonate groups, fluorocarbon groups, siloxane groups, pyridine groups and amide groups.

Abstract: The invention relates to a sensor system comprising a waveguide, which waveguide comprises a grating in at least a part of the waveguide, which waveguide further comprises a coating, the coating comprising a polymer, which polymer comprises a chain, in which chain are present an aromatic group and a chemical group selected from the group of sulfonyl groups, carbonyl groups, carbonate groups, fluorocarbon groups, siloxane groups, pyridine groups and amide groups.

Abstract: The invention relates to a waveguide, comprising a grating in at least a part of the waveguide, which waveguide comprises a coating, the coating comprising a polymer, which polymer comprises an aliphatic chain, which aliphatic chain is provided with hydrophilic side-chains. The invention further relates to a sensor system comprising a waveguide according to any one of the preceding claims, a light source, and a photo-detector.

Abstract: The invention relates to a method for preparing a conductive or semi-conductive element, comprising providing a dispersion of an anisotropic particulate hybrid material in a continuous phase, which hybrid material comprises (a) anisotropic particles, and (b) a conductive or semi-conductive material or a precursor for a conductive or semi-conductive material; applying the dispersion to a surface of a substrate; and forming the conductive or semi-conductive element from the dispersion applied to the surface. Further the invention relates to materials useful for use in a method of the invention and an electronic device obtainable by a method according to the invention.

Abstract: Optical sensor for detecting an analyte (4), the sensor comprising a photonic crystal, the photonic crystal comprising an analyte—sensitive polymeric material (1) which material is deformable by contact with said analyte (1), by which contact an optical property of the photonic crystal is altered or of which material (1) a refractive index is changed by contact with said analyte (4) and which analyte—sensitive material (1) forms part of a periodic structure (3,4) of the photonic crystal, the structure (3,4) having alternating zones of a relatively high refractive index and zones of a relatively low refractive index, which alternating zone are provided in one or two orthogonal directions of the analyte—sensitive material (1).

Abstract: The invention relates to an actuator for converting between mechanical and electrical energy comprising—at least two electrodes; and—an electroactive polymer, comprising aromatic moieties in the chain and flexible moieties in the chain, the polymer further comprising side groups bound to the chain, which side groups are selected from the group consisting of polar side groups and side groups comprising an aromatic moiety. The invention further relates to a novel electroactive polymer comprising polar side groups bound to the chain.

Abstract: The invention relates to a sensor system comprising a waveguide, which waveguide comprises a grating in at least a part of the waveguide, which waveguide further comprises a coating, the coating comprising a polymer, which polymer comprises a chain, in which chain are present an aromatic group and a chemical group selected from the group of sulfonyl groups, carbonyl groups, carbonate groups, fluorocarbon groups, siloxane groups, pyridine groups and amide groups.