Sony Deutschland Gmbh

Max-planck-gesellschaft Zur Forderung Der Wissenschaften E.v.

Isabelle Besnard

Akio Yasuda

Tobias Vossmeyer

Marko Burghard

Ulrich Schlecht

Jurina Wessels

William E Ford

The application relates to a chemical sensor device comprising a substrate (), a sensor medium () formed on the substrate, the sensor medium comprising one-dimensional nanoparticles, wherein the one-dimensional nanoparticles essentially consist of a semiconducting ABcompound, e.g. VOand detection means () for detecting a change of a physical property of the sensor medium e.g. conductivity. The porosity of the sensor medium supports a fast access of the analyte to the sensing material and therefore a fast response of the sensor. The selectivity and sensitivity of the sensor can be tailored by doping the one-dimensional nanoscale material with different dopants or by varying the dopant concentration. Sensitivity of the sensor device to an analyte, preferably an amine, can be increased by increasing relative humidity of the sample to at least 5%.

Chemical sensor

The invention relates to a nanoparticle film comprising a nanoparticle network formed of nanoparticles interlinked by linker molecules. The linker molecules have at least two linker units that can bind to the surface of the nanoparticles. By introducing selectivity-enhancing units in the linker molecule, the selectivity of the nanoparticle film towards target analytes can be enhanced. A fine-tuning of the selectivity can be achieved by including a fine-tuning unit in the vicinity of the selectivity-enhancing unit. The nanoparticle film can be used to produce chemical sensors which are selective and stable in their performance.

Selective chemical sensors based on interlinked nanoparticle assemblies

Growing community of inventors

Tübingen, Germany

Isabelle Besnard