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, ...

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 ...

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 ...

Promising sensors for submarines, mines and spacecraft

14-Nov-2017 - Researchers from the Physics Department of Moscow State University and their colleagues have discovered a mechanism that allows gas sensors, based on nanocrystalline metal oxides, to work at room temperature. This invention will raise the efficiency of environmental monitoring at nuclear power ...

Microhotplates for a smart gas sensor

24-Feb-2017 - Gas sensors used for leakage alerts and air quality monitoring are essential in our daily lives. Towards a ubiquitous society, smart gas sensors, which perform signal processing and communication besides sensing, have attracted much attention. In addition, integrating these functions into a ...

Highly sensitive gas sensors for volatile organic compound detection

03-Feb-2017 - Volatile organic compounds (VOCs) are a group of carbon-based chemicals with low evaporation or vaporization points. Some VOCs are harmful to animal or environmental health so sensing these gasses is important for maintaining health and safety. VOCs also occur in nature and can be useful in ...