Article last updated on: Jan 25, 2019

The latest graphene sensor news:

Researchers demonstrate control of the optical properties of graphene

An international team of scientists from the CNR-IFN, Politecnico di Milano, the University of Pisa, the Graphene Center of Cambridge (UK) and the Catalan Institute of Nanoscience and Nanotechnology (ICN2, Barcelona) has shown that the relaxation time of graphene charge carriers can be significantly modified by applying an external electrical field.

After light absorption, graphene's photoexcited charge carriers cool down to the initial equilibrium state in a few picoseconds, corresponding to a millionth of a millionth of a second. The remarkable speed of this relaxation process makes graphene particularly promising for a number of technological applications, including light detectors, sources and modulators.

Researchers develop new graphene-based sensor for rapid detection of bacterial pathogens

A research group from Sweden's Chalmers University of Technology and the Technical University of Denmark has shown that graphene can rapidly distinguish between types of bacteria. The team therefore set out to create extremely sensitive sensors, that can generate rapid signals upon bacterial colonization.​

The team developed a simple prototype sensor based on pristine, non-functionalized graphene. The detection principle is a change in electrical resistance of graphene upon exposure to bacterial cells. Without functionalization with specific receptors, such sensors cannot be expected to be selective to certain bacteria. However, the researchers demonstrated that two different bacterial species can be detected and differentiated by the new sensor due to their different growth dynamics, adherence pattern, density of adhered bacteria and microcolonies formation.

New chemical glucose sensing tech based on boronic acids and graphene foam

Researchers at the University of Bath, in collaboration with industrial partner Integrated Graphene, have developed a sensing technique based on graphene foam, for the detection of glucose levels in the blood.

The newly developed sensor is a chemical one instead of enzyme-based, which makes the technology robust, with a long shelf-life and more sensitive to lower glucose concentrations compared to current systems.

UK-based Paragraf raises $60 million in its latest financing round

UK-based graphene developer Paragraf has raised $60 million from the UK's Future Fund, the CIA-backed In-Q-Tel and other investors. The funds will be used to accelerate the company's device development, production and market launch.

Paragraf's newly launched Hall Effect sensors based on graphene image

Paragraf produces its own CVD graphene materials, which it then uses to create devices for the sensor, energy and semiconductor markets. The company introduced its first product, a graphene-based hall-effect sensor back in 2020, and it has recently concluded a study to test the deployment of graphene as an OLED electrode material.

Advanced Material Development secures InnovateUK grant for work on nanomaterials-based gas sensors

Advanced Material Development recently announced a new InnovateUK “Analysis 4 Innovators” grant to work on validating its next generation novel nanomaterial-based gas sensors. AMD is working with the National Physical Laboratory (NPL) on the development and testing of devices using advanced testing equipment, and measurement and analysis experience.

The next generation of air quality monitors will rely on low power sensing elements which can be connected remotely to support more detailed and localized emissions monitoring. This three-month project seeks to validate novel nanomaterial-based sensors which AMD has recently developed utilizing its functionalized nanomaterials. For instance, AMD's Photonic Crystal work incorporates various nanomaterials into the polymeric structure, of which graphene is the main constituent.