Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > A bullet-proof heating pad

Abstract:
Sometimes nothing feels better on stiff, aching joints than a little heat. But many heating pads and wraps are rigid and provide uneven warmth, especially when the person is moving around. Researchers have now made a wearable heater by modifying woven Kevlar® fabric with nanowires that conduct and retain heat. They report their results in ACS' journal Nano Letters.

A bullet-proof heating pad

Washington, DC | Posted on November 2nd, 2018

Even at rest, the human body produces a lot of heat, but most of this warmth dissipates to the air and is wasted. Cold-weather clothing is often made from materials that keep heat close to the body, offering thermal insulation. For even more warmth, scientists have tried coating textiles with metallic nanowires that can be heated with a small battery. However, researchers are still searching for a material that provides good thermal conductivity and insulation while being safe, inexpensive, durable and flexible. Hyung Wook Park and colleagues wondered if they could make a wearable heating device by incorporating metallic nanowires into Kevlar®, the famous bullet-proof fiber used in many types of body armor.

To make their wearable heater, the team grew copper-nickel nanowires between two Kevlar® sheets. They filled in the spaces between the nanowires with a resin containing reduced graphene oxide to encourage uniform heating. Applying a low voltage (1.5 volts) to the composite material caused a rapid and uniform increase in surface temperature to 158 F -- a typical "high" setting on a heating pad. In another experiment, the team showed that the material acted as a thermal insulator by reflecting infrared radiation emitted from a hot plate set at human body temperature. The fabric was strong, flexible, breathable and washable, while still absorbing impacts similar to regular Kevlar®. In addition to wearable heat therapy, the new material could be used to make heated body armor for police and military personnel in cold climates, the researchers say.

###

The authors acknowledge funding from the National Research Foundation of Korea and the Ministry of Science and ICT.

####

About American Chemical Society
The American Chemical Society, the world's largest scientific society, is a not-for-profit organization chartered by the U.S. Congress. ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.

For more information, please click here

Contacts:
Katie Cottingham

301-775-8455

Copyright © American Chemical Society

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

The abstract that accompanies this study is available here:

Related News Press

News and information

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Arrowhead Pharmaceuticals to Webcast Fiscal 2019 Year End Results November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Arrowhead and Collaborator Janssen Present Phase 2 Clinical Data for Investigational Hepatitis B Regimens at The Liver Meeting® 2019 November 8th, 2019

Law enforcement/Anti-Counterfeiting/Security/Loss prevention

GLOBALFOUNDRIES Brings New Level of Security and Protection on 22FDX Platform for Connected Systems:22FDX security solution aims to protect against physical tampering and attacks for cellular Internet of Things (IoT) devices October 11th, 2019

Product authentication at your fingertips: UC Riverside-led research brings rapid and reversible switching of plasmonic color to solids October 4th, 2019

Graphene/ Graphite

Borophene on silver grows freely into an atomic ‘skin’: Rice scientists lead effort to improve manufacture of valuable 2D material October 1st, 2019

Physicists found weak spots in ceramic/graphene composites: Physicists found out the structures in nanomaterials made of ceramic and graphene plates, in which cracks appear most frequently September 27th, 2019

The future of materials with graphene nanotubes starts in Japan September 19th, 2019

New health monitors are flexible, transparent and graphene enabled September 13th, 2019

Possible Futures

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Arrowhead Pharmaceuticals to Webcast Fiscal 2019 Year End Results November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Discoveries

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Thorium superconductivity: Scientists discover a new high-temperature superconductor November 8th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Announcements

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Arrowhead Pharmaceuticals to Webcast Fiscal 2019 Year End Results November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

A distinct spin on atomic transport: Work that demonstrates simultaneous control over transport and spin properties of cold atoms establishes a framework for exploring concepts of spintronics and solid-state physics November 8th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Arrowhead and Collaborator Janssen Present Phase 2 Clinical Data for Investigational Hepatitis B Regimens at The Liver Meeting® 2019 November 8th, 2019

Homeland Security

Northwestern researchers achieve unprecedented control of polymer grids: Materials could find applications in water purification, solar energy storage, body armor June 22nd, 2018

Powering the 21st Century with Integrated Photonics: UCSB-Led Team Selected for Demonstration of a Novel Waveguide Platform Which is Transparent Throughout the MWIR and LWIR Spectral Bands June 19th, 2018

Squeezing light at the nanoscale: Ultra-confined light could detect harmful molecules June 17th, 2018

The dispute about the origins of terahertz photoresponse in graphene results in a draw April 26th, 2018

Military

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Visible light and nanoparticle catalysts produce desirable bioactive molecules: Simple photochemical method takes advantage of quantum mechanics October 31st, 2019

Small magnets reveal big secrets: Work by international research team could have wide-ranging impact on information technology applications October 28th, 2019

Bio-inspired nano-catalyst guides chiral reactions October 25th, 2019

Textiles/Clothing

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

The materials engineers are developing environmentally friendly materials: The materials engineers are developing environmentally friendly materials for producing smart textiles November 2nd, 2018

Eco-friendly waterproof polymer films synthesized using novel method October 31st, 2018

Unraveling the mystery of how black widow spiders create steel-strength silk webs: ‘Modified micelle theory’ may allow scientists to create equally strong synthetic materials October 23rd, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project