Sensors made from ‘frozen smoke’ can detect toxic formaldehyde in homes and offices

The proof-of-concept sensors could be adapted to detect a wide range of hazardous gases

14-Feb-2024 - Researchers have developed a sensor made from ‘frozen smoke’ that uses artificial intelligence techniques to detect formaldehyde in real time at concentrations as low as eight parts per billion, far beyond the sensitivity of most indoor air quality sensors. The researchers, from the University of ...

Carbon molecular sieve integrated graphene sensor

New paradigm in atmospheric gas sensing and molecular identification

21-Mar-2022 - Graphene, an atomic-thick sheet of carbon has found immense applications in gas sensors due to its single-molecule sensitivity, low-noise levels, and high carrier density. However, graphene’s much-heralded sensitivity also means it is inherently non-selective to any gas. Hence, it easily gets ...

Green hydrogen glows pink

Researchers develop a sensor to make hydrogen visible

14-Mar-2022 - Researchers at the Department of Chemistry and Pharmacy and the Chair of Thermal Process Technology at FAU have succeeded in making invisible hydrogen gas visible to the naked eye in order to prevent the risk of fires and explosions. The key to their research is what is known as supraparticles, ...

Scientists create 3D-printed, microscopic gas sensors - painters’ pallets without even a hint of pigment

"The tiny responsive arrays, which are smaller than a freckle, can be used to tell us an enormous amount about the chemistry of their environment”

22-Sep-2021 - Scientists from Trinity College Dublin and AMBER, the SFI Research Centre for Advanced Materials and BioEngineering Research, have discovered a way to fabricate tiny colour-changing gas sensors using new materials and a high-resolution form of 3D printing. The sensors – responsive, printed, ...

New chemistry for ultra-thin gas sensors

New process for zinc oxide layers that can be used for nitrogen oxide sensors as well as protection layer on plastic

02-Jul-2020 - The application of zinc oxide layers in industry is manifold and ranges from the protection of degradable goods to the detection of toxic nitrogen oxide gas. Such layers can be deposited by atomic layer deposition (ALD) which employs typically chemical compounds, or simply precursors, which ...

A new, highly sensitive chemical sensor uses protein nanowires

UMass Amherst team introduces high-performing 'green' electronic sensor

15-May-2020 - Writing in the journal NanoResearch, a team at the University of Massachusetts Amherst reports that they have developed bioelectronic ammonia gas sensors that are among the most sensitive ever made. The sensor uses electric-charge-conducting protein nanowires derived from the bacterium Geobacter ...

MOFs can sense and sort troublesome gases

12-Apr-2019 - From astronauts and submariners to miners and rescue workers, people who operate in small enclosed spaces need good air quality to work safely and effectively. Electronic sensors now developed by a KAUST team can simultaneously detect at least three critical parameters that are important to ...

Lining MOF pockets to detect noxious gases

07-May-2018 - A porous material with tailor-made pockets stitched into its structure is a promising material for sensing noxious gases. A thin film of the material, coated onto an electrode, formed an electronic sensor that could detect traces of sulfur dioxide gas1. The sensor is a significant step toward ...

Oxide and semiconductor combination builds new device potential

12-Jan-2018 - Insulating oxides are oxygen containing compounds that do not conduct electricity, but can sometimes form conductive interfaces when they're layered together precisely. The conducting electrons at the interface form a two-dimensional electron gas (2DEG) which boasts exotic quantum properties that ...

Micro-spectrometer opens door to a wealth of new smartphone functions

21-Dec-2017 - Use your smartphone to check how clean the air is, whether food is fresh or a lump is malignant. This has all come a step closer thanks to a new spectrometer that is so small it can be incorporated easily and cheaply in a mobile phone. The little sensor developed at TU Eindhoven is just as ...