* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Wednesday, September 3, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

    Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

    Liam Payne’s Cousin Ross Harris Honors Late Singer With Emotional Song ‘Bones’ – yahoo.com

    Liam Payne’s Cousin Ross Harris Honors Late Singer with Emotional New Song ‘Bones

    Country music star apologizes after drunken show ends with cops taking him down: ‘I’m not OK’ – PennLive.com

    Country Music Star Apologizes After Drunken Show Ends in Police Intervention: ‘I’m Not OK

    Comanche Nation Entertainment closes casino near Devol – KSWO 7News

    Comanche Nation Entertainment Closes Casino Near Devol in Surprising Move

    Erykah Badu Announces ‘Abi & Alan’ Album With The Alchemist Will Be Delayed – yahoo.com

    Erykah Badu Opens Up About the Delay of Her Highly Anticipated ‘Abi & Alan’ Album with The Alchemist

    If You Needed Some BTS Pics Of The Rock’s Tree Trunk Legs To Spice Up Your Day, We Got ‘Em – yahoo.com

    Need a Boost? Check Out These Epic BTS Shots of The Rock’s Tree Trunk Legs!

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

    Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

    New Technology from Ramsey Theory Group Brings Diagnostic Testing and Telehealth Directly into Patients’ Homes – Yahoo Finance

    Revolutionary Ramsey Theory Technology Delivers Diagnostic Testing and Telehealth Right to Your Doorstep

    China’s CATL sells stake in Finnish subcontract car manufacturer – Reuters

    China’s CATL Sells Stake in Finnish Auto Supplier in Strategic Move

    This Secret Technology Will Make The IPhone 17 Super Thin Air – VOI.ID

    How This Breakthrough Technology Will Make the iPhone 17 Incredibly Thin and Lightweight

    Gator football kicks off with excitement and new technology – WCJB | TV20

    Gator Football Kicks Off with Thrilling Action and Innovative Technology

    Marvell Technology (MRVL) Loses 18.6% as Growth Outlook Fails to Impress – Yahoo Finance

    Marvell Technology (MRVL) Loses 18.6% as Growth Outlook Fails to Impress – Yahoo Finance

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

    Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

    Liam Payne’s Cousin Ross Harris Honors Late Singer With Emotional Song ‘Bones’ – yahoo.com

    Liam Payne’s Cousin Ross Harris Honors Late Singer with Emotional New Song ‘Bones

    Country music star apologizes after drunken show ends with cops taking him down: ‘I’m not OK’ – PennLive.com

    Country Music Star Apologizes After Drunken Show Ends in Police Intervention: ‘I’m Not OK

    Comanche Nation Entertainment closes casino near Devol – KSWO 7News

    Comanche Nation Entertainment Closes Casino Near Devol in Surprising Move

    Erykah Badu Announces ‘Abi & Alan’ Album With The Alchemist Will Be Delayed – yahoo.com

    Erykah Badu Opens Up About the Delay of Her Highly Anticipated ‘Abi & Alan’ Album with The Alchemist

    If You Needed Some BTS Pics Of The Rock’s Tree Trunk Legs To Spice Up Your Day, We Got ‘Em – yahoo.com

    Need a Boost? Check Out These Epic BTS Shots of The Rock’s Tree Trunk Legs!

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

    Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

    New Technology from Ramsey Theory Group Brings Diagnostic Testing and Telehealth Directly into Patients’ Homes – Yahoo Finance

    Revolutionary Ramsey Theory Technology Delivers Diagnostic Testing and Telehealth Right to Your Doorstep

    China’s CATL sells stake in Finnish subcontract car manufacturer – Reuters

    China’s CATL Sells Stake in Finnish Auto Supplier in Strategic Move

    This Secret Technology Will Make The IPhone 17 Super Thin Air – VOI.ID

    How This Breakthrough Technology Will Make the iPhone 17 Incredibly Thin and Lightweight

    Gator football kicks off with excitement and new technology – WCJB | TV20

    Gator Football Kicks Off with Thrilling Action and Innovative Technology

    Marvell Technology (MRVL) Loses 18.6% as Growth Outlook Fails to Impress – Yahoo Finance

    Marvell Technology (MRVL) Loses 18.6% as Growth Outlook Fails to Impress – Yahoo Finance

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

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

February 10, 2024
in Science
Sensors made from ‘frozen smoke’ can detect toxic formaldehyde in homes and offices
Share on FacebookShare on Twitter

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 Cambridge, developed sensors made from highly porous materials known as aerogels. By precisely engineering the shape of the holes in the aerogels, the sensors were able to detect the fingerprint of formaldehyde, a common indoor air pollutant, at room temperature.

The proof-of-concept sensors, which require minimal power, could be adapted to detect a wide range of hazardous gases, and could also be miniaturised for wearable and healthcare applications. The results are reported in the journal Science Advances.

Volatile organic compounds (VOCs) are a major source of indoor air pollution, causing watery eyes, burning in the eyes and throat, and difficulty breathing at elevated levels. High concentrations can trigger attacks in people with asthma, and prolonged exposure may cause certain cancers.

Formaldehyde is a common VOC and is emitted by household items including pressed wood products (such as MDF), wallpapers and paints, and some synthetic fabrics. For the most part, the levels of formaldehyde emitted by these items are low, but levels can build up over time, especially in garages where paints and other formaldehyde-emitting products are more likely to be stored.

According to a 2019 report from the campaign group Clean Air Day, a fifth of households in the UK showed notable concentrations of formaldehyde, with 13% of residences surpassing the recommended limit set by the World Health Organization (WHO).

“VOCs such as formaldehyde can lead to serious health problems with prolonged exposure even at low concentrations, but current sensors don’t have the sensitivity or selectivity to distinguish between VOCs that have different impacts on health,” said Professor Tawfique Hasan from the Cambridge Graphene Centre, who led the research.

“We wanted to develop a sensor that is small and doesn’t use much power, but can selectively detect formaldehyde at low concentrations,” said Zhuo Chen, the paper’s first author.

The researchers based their sensors on aerogels: ultra-light materials sometimes referred to as ‘liquid smoke’, since they are more than 99% air by volume. The open structure of aerogels allows gases to easily move in and out. By precisely engineering the shape, or morphology, of the holes, the aerogels can act as highly effective sensors.

Working with colleagues at Warwick University, the Cambridge researchers optimised the composition and structure of the aerogels to increase their sensitivity to formaldehyde, making them into filaments about three times the width of a human hair. The researchers 3D printed lines of a paste made from graphene, a two-dimensional form of carbon, and then freeze-dried the graphene paste to form the holes in the final aerogel structure. The aerogels also incorporate tiny semiconductors known as quantum dots.

The sensors they developed were able to detect formaldehyde at concentrations as low as eight parts per billion, which is 0.4 percent of the level deemed safe in UK workplaces. The sensors also work at room temperature, consuming very low power.

“Traditional gas sensors need to be heated up, but because of the way we’ve engineered the materials, our sensors work incredibly well at room temperature, so they use between 10 and 100 times less power than other sensors,” said Chen.

To improve selectivity, the researchers then incorporated machine learning algorithms into the sensors. The algorithms were trained to detect the ‘fingerprint’ of different gases, so that the sensor was able to distinguish the fingerprint of formaldehyde from other VOCs.

“Existing VOC detectors are blunt instruments — you only get one number for the overall concentration in the air,” said Hasan. “By building a sensor that is able to detect specific VOCs at very low concentrations in real time, it can give home and business owners a more accurate picture of air quality and any potential health risks.”

The researchers say that the same technique could be used to develop sensors to detect other VOCs. In theory, a device the size of a standard household carbon monoxide detector could incorporate multiple different sensors within it, providing real-time information about a range of different hazardous gases. The team at Warwick are developing a low-cost multi-sensor platform that will incorporate these new aerogel materials and, coupled with AI algorithms, detect different VOCs.

“By using highly porous materials as the sensing element, we’re opening up whole new ways of detecting hazardous materials in our environment,” said Chen.

The research was supported in part by the Henry Royce Institute, and the Engineering and Physical Sciences Research Council (EPSRC), part of UK Research and Innovation (UKRI). Tawfique Hasan is a Fellow of Churchill College, Cambridge.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Science Daily – https://www.sciencedaily.com/releases/2024/02/240209163427.htm

Tags: frozenscienceSensors
Previous Post

Language barriers could contribute to higher aggression in people with dementia

Next Post

How electron spectroscopy measures exciton ‘holes’

Grassland ecological compensation accounting based on the flow of emergy ecological products: a case from the Qinghai Tibet region, China – Nature

Innovative Grassland Ecological Compensation Accounting Using Emergy Flow: Insights from the Qinghai-Tibet Region

September 3, 2025
Climate scientists file a public, point-by-point rebuttal of Trump admin report casting doubt on climate change – CNN

Climate Scientists Deliver a Detailed Public Rebuttal to Trump Administration’s Climate Change Doubts

September 3, 2025
Earth’s Seasons Are Out of Sync, Scientists Discover From Space – ScienceAlert

Scientists Reveal Earth’s Seasons Are Falling Out of Sync Through Space Observations

September 3, 2025
Fasting glucose improvement following a short-term, culturally adapted lifestyle intervention in Latino adults at risk for type 2 diabetes mellitus: a quasi-experimental study – BMC Nutrition

Short-Term Culturally Tailored Lifestyle Intervention Boosts Fasting Glucose in Latino Adults at Risk for Type 2 Diabetes

September 3, 2025
Blockchain lender Figure Technology seeks to raise up to $526M in IPO (FIGR:Pending) – Seeking Alpha

Blockchain Lender Figure Technology Sets Sights on $526M in Thrilling IPO Launch

September 3, 2025
One big question for every postseason team, Rangers in the mix & notable September call-ups – Yahoo Sports

Key Questions for Every Postseason Team: Rangers in the Mix and Notable September Call-Ups

September 3, 2025
Is it OK to be happy when the world is falling apart? | Avram Alpert – The Guardian

Is It Possible to Find True Happiness When the World Feels Like It’s Falling Apart?

September 3, 2025
US economy grew at a faster pace in Q2 following Commerce Department revision – Fox Business

US Economy Accelerates in Q2 After Commerce Department Revision

September 2, 2025
Jenny Han Dropped a Major ‘The Summer I Turned Pretty’ Easter Egg Revealing [SPOILER] – yahoo.com

Jenny Han Just Unveiled a Huge ‘The Summer I Turned Pretty’ Easter Egg That Changes Everything [SPOILER]

September 2, 2025
‘I was very active’: Trump dismisses social media rumors about his health – Spectrum News

Trump Confidently Declares He’s in Top Shape, Brushing Off Health Speculations

September 2, 2025

Categories

Archives

September 2025
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
2930 
« Aug    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (804)
  • Economy (822)
  • Entertainment (21,702)
  • General (16,826)
  • Health (9,863)
  • Lifestyle (837)
  • News (22,149)
  • People (824)
  • Politics (830)
  • Science (16,033)
  • Sports (21,321)
  • Technology (15,803)
  • World (803)

Recent News

Grassland ecological compensation accounting based on the flow of emergy ecological products: a case from the Qinghai Tibet region, China – Nature

Innovative Grassland Ecological Compensation Accounting Using Emergy Flow: Insights from the Qinghai-Tibet Region

September 3, 2025
Climate scientists file a public, point-by-point rebuttal of Trump admin report casting doubt on climate change – CNN

Climate Scientists Deliver a Detailed Public Rebuttal to Trump Administration’s Climate Change Doubts

September 3, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version