. 24/7 Space News .
Smart materials are becoming smarter
by Staff Writers
Kaliningrad, Russia (SPX) Jan 24, 2020

Smart materials are becoming smarter.

A researcher from Baltic Federal University together with his colleagues developed a composite material that can change its temperature and parameters under the influence of magnetic and electrical fields. Smart materials are safe for human health, and with these properties can be used to manufacture implants (or surface coating for them) that would work as sensors. The article was published in the Scientific Reports journal.

Composites are a new type of materials that consist of heterogeneous components (metals, ceramics, glass, plastic, carbon, etc) and combine their properties. To create such a material, a filler with certain stability and rigidity is placed into a flexible matrix.

Various compositions and matrix-filler ratios create a wide range of materials with given sets of characteristics. Composites may be used in different fields, from construction to energy, medicine, and space research. Polymer composites are currently considered one of the most promising smart materials for biomedical applications.

A researcher from Immanuel Kant Baltic Federal University together with his team used this approach to develop smart materials for biological implants. The authors of the study wanted the implant to act as a sensor, e.g. to measure a patient's body temperature and other health indicators in real time, and also to release drugs into a patient's body in given amounts and at given intervals.

To create such an implant, the scientists had to find a combination of materials with the required properties. In its recent study the team described a composite material constructed from Gd5(Si,Ge)4 magnetic nanoparticles incorporated into a polyvinylidenfluoride (PVDF) matrix.

PVDF is a flexible and biocompatible (i.e. harmless for the body) polymer that is used as a surgical suture material. It also possesses piezoelectric properties: when PVDF is stretched or compressed, electric voltage occurs in it (this is called direct piezoeffect), and when voltage is applied to it, the material changes in size (reverse piezoeffect). Due to these properties, PVDF is effectively used in sensors.

Moreover, it has also been used to create new magnetoelectric materials, such as composite multiferroics. The magnetic and ferroelectric characteristics of such materials are mutually manageable, i.e. their electrical properties can be controlled with a magnetic field, and magnetic characteristics - with an electric one. Thanks to its properties, PVDF may be used as a basis for implant coating or even the implants themselves.

"The novelty of our approach lies in the use of specific magnetic particles as a filler of a piezopolymer matrix. Along with magnetic properties they also possess the magnetocaloric effect, i.e. change their temperature under the influence of a magnetic field. Magnetocaloric materials are a promising basis for the development of alternative cooling systems, the so-called 'magnetic freezers'.

It's also recently been suggested that they could be used in biomedical applications," said Karim Amirov, a Candidate of Physics and Mathematics, a senior researcher at the Laboratory for New Magnetic Materials, Kant Baltic Federal University.

According to Amirov , to create magnetoelectric smart composites, magnetocaloric substances are added to PVDF (dissolved in the dimethylformamide solvent) and evenly spread. After that the polymer is dried down in line with a specific temperature and time protocol. The result is a flexible piezopolymer plate of a given shape with incorporated magnetic particles. Such a plate can be easily cut with scissors.

Thus, the use of the new magnetocaloric particles led to the development of a smart composite material combining magnetoelectric and magnetocaloric properties. The first ones make the material a sensor detecting both magnetic and electric fields, and the second turn it into a heating or cooling element depending on magnetic field changes.

Research paper

Related Links
Immanuel Kant Baltic Federal University
Space Technology News - Applications and Research

Thanks for being there;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Monthly Supporter
$5+ Billed Monthly

paypal only
SpaceDaily Contributor
$5 Billed Once

credit card or paypal

Texas AM engineers develop recipe to dramatically strengthen body armor
College Station, TX (SPX) Jan 24, 2020
According to ancient lore, Genghis Khan instructed his horsemen to wear silk vests underneath their armor to better protect themselves against an onslaught of arrows during battle. Since the time of Khan, body armor has significantly evolved - silk has given way to ultra-hard materials that act like impenetrable walls against most ammunition. However, even this armor can fail, particularly if it is hit by high-speed ammunition or other fast-moving objects. Researchers at Texas A and M University h ... read more

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Spacewalks, science and Beyond

Experimental ISS oven allows astronauts to bake cookies in two hours

ESA and Airbus sign contract for Bartolomeo platform on the International Space Station

Bartolomeo starts its journey to the International Space Station

Stennis Space Center sets stage for Artemis testing in 2020

Russia to supply US with six RD-180 rocket engines this year

Fire at Firefly Aerospace interrupts rocket test

Russia claims edge as US lags in hypersonic weapons development

Mars' water was mineral-rich and salty

Russian scientists propose manned Base on Martian Moon to control robots remotely on red planet

To infinity and beyond: interstellar lab unveils space-inspired village for future Mars settlement

Nine finalists chosen in Mars 2020 rover naming contest

China to launch Mars probe in July

China's space-tracking vessels back from missions

China may have over 40 space launches in 2020

China launches powerful rocket in boost for 2020 Mars mission

Second space data highway satellite set to beam

Europe backs space sector investment with EUR 200 million of financing

Budget battle hampers EU in space

Lockheed Martin Ships Mobile Communications Satellite To Launch Site

Buildings can become a global CO2 sink if made out of wood instead of cement and steel

Astroscale awarded grant From to commercialize active debris removal services

Smart materials are becoming smarter

Texas AM engineers develop recipe to dramatically strengthen body armor

Some non-photosynthetic orchids consist of dead wood

The skin of the earth is home to pac-man-like protists

NESSI emerges as new tool for exoplanet atmospheres

Astronomers find a way to form 'fast and furious' planets around tiny stars

Looking back at a New Horizons New Year's to remember

NASA's Juno navigators enable Jupiter cyclone discovery

The PI's Perspective: What a Year, What a Decade!

Reports of Jupiter's Great Red Spot demise greatly exaggerated

The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.