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, ...

Engineers develop prototype of electronic nose

A nose by any other name is a gas sensor

06-Sep-2021 - There’s nothing like the smell of freshly brewed coffee in the morning. But how does one measure that smell? There’s no energy in a smell to help estimate how potent the coffee might be. Instead, it’s the gases emitted from brewed coffee that contribute to the invigorating scent. The human nose ...

Innovations through hair-thin optical fibres

Study shows what miniaturised optical filters make possible

22-Jan-2021 - Scientists at the University of Bonn have built hair-thin optical fibre filters in a very simple way. They are not only extremely compact and stable, but also colour-tunable. This means they can be used in quantum technology and as sensors for temperature or for detecting atmospheric gases. The ...

An improved wearable, stretchable gas sensor using nanocomposites

Ultrasensitive nitrogen dioxide gas sensor may find applications in real-time environmental monitoring or the healthcare industry

01-Sep-2020 - A stretchable, wearable gas sensor for environmental sensing has been developed and tested by researchers at Penn State, Northeastern University and five universities in China. The sensor combines a newly developed laser-induced graphene foam material with a unique form of molybdenum disulfide ...

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 ...

First all-metamaterial optical gas sensor

03-Sep-2019 - Researchers have developed the first fully-integrated, non-dispersive infrared (NDIR) gas sensor enabled by specially engineered synthetic materials known as metamaterials. The sensor has no moving parts, requires little energy to operate and is among the smallest NDIR sensors ever created. The ...