• HOME
  • NEWS
    • BIOENGINEERING
    • SCIENCE NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • FORUM
    • INSTAGRAM
    • TWITTER
  • CONTACT US
Friday, July 1, 2022
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
    • BIOENGINEERING
    • SCIENCE NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • FORUM
    • INSTAGRAM
    • TWITTER
  • CONTACT US
  • HOME
  • NEWS
    • BIOENGINEERING
    • SCIENCE NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • FORUM
    • INSTAGRAM
    • TWITTER
  • CONTACT US
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News

Natural mineral hackmanite can change color almost indefinitely enabling numerous applications

Bioengineer by Bioengineer
June 21, 2022
in Science News
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

While investigating hackmanite, a natural wonder material, researchers found that it, in addition to two other minerals, can change their color upon exposure to UV radiation repeatedly without wearing out. The results show that the inexpensive hackmanite, which is easy to synthesise, is also an excellent material because of its high durability and applicability for different purposes.

Hackmanite

Credit: Mika Lastusaari

While investigating hackmanite, a natural wonder material, researchers found that it, in addition to two other minerals, can change their color upon exposure to UV radiation repeatedly without wearing out. The results show that the inexpensive hackmanite, which is easy to synthesise, is also an excellent material because of its high durability and applicability for different purposes.

A research group at the University of Turku, Finland, has been investigating and developing the properties of the wonder material hackmanite for almost a decade. Applications such as personal UV monitoring and X-ray imaging have been developed based on hackmanite’s ability to change color.

Hackmanite changes its color from white to purple under UV irradiation and eventually reverts back to white if no UV is present. The structural features enabling such repeated changes have so far been unclear. Now, upon investigating three natural minerals – hackmanite, tugtupite and scapolite – the researchers have found the answer.

The investigated color-changing minerals are inorganic natural materials, but there are also organic compounds, hydrocarbons, that can change color reversibly due to exposure to radiation. These hydrocarbons, however, can only change color only a few times before their molecular structure breaks down. This is because the color change involves a drastic change in the structure, and undergoing this change repeatedly eventually breaks the molecule.

“In this research, we found out for the first time that there is actually a structural change involved in the color change process as well. When the color changes, sodium atoms in the structure move relatively far away from their usual places and then return back. This can be called as structural breathing and it does not destroy the structure even if it is repeated a large number of times,” reports Professor Mika Lastusaari from the Department of Chemistry at the University of Turku, Finland.

Researchers proved that hackmanite’s ability to alternate between white and purple forms is highly repeatable

According to Professor Lastusaari, the durability is due to the strong three-dimensional cage-like overall structure of these minerals, which is similar to that found in zeolites. In detergents, for example, the cage-like structure enables zeolite to remove magnesium and calcium from water by binding them tightly inside the pores of the cage.

“In these color-changing minerals, all processes associated with the color change occur inside the pores of the zeolitic cage where the sodium and chlorine atoms reside. That is, the cage-like structure allows atomic movement inside the cage while keeping the cage itself intact. This is why minerals can change color and revert back to their original color practically indefinitely,” Doctoral Researcher Sami Vuori explains.

Previously, it has been known that scapolite changes color much faster than hackmanite, whereas tugtupite’s changes are much slower.

“Based on the results of this work, we found out that the speed of the color change correlates with the distance that the sodium atoms move. These observations are important for future material development, because now we know what is required from the host structure to allow the control and tailoring of the color change properties,” comments Doctoral Researcher Hannah Byron.

“There were no characterisation methods available for the research on color changing minerals, which is why we have developed new methods by ourselves. However, it is difficult to interpret the results unambiguously based on experimental data alone. In fact, we could not have reached the present conclusions without strong support from theoretical calculations, since only the combination of experimental and computational data shows the whole picture. We owe a great many thanks to our collaborator Professor Tangui Le Bahers and his group, who have developed and advanced suitable computational methods to such detail and accuracy that would not have been possible just a few years ago,” reflects Lastusaari.

Hackmanite has amazing potential for applications

The Intelligent Materials Research Group at the Department of Chemistry of the University of Turku, led by Lastusaari, has long conducted pioneering research on materials with light and color-related properties, especially on hackmanite. They are currently exploring numerous applications for hackmanite, such as possibly replacing LEDs and other light bulbs with the natural mineral and using it in X-ray imaging.

One of the most interesting avenues that the researchers are currently exploring is a hackmanite-based dosimeter and passive detectors for the International Space Station, intended to be used to measure the radiation dose uptake of materials during space flights.

“The strength of hackmanite’s color depends on how much UV radiation it is exposed to, which means that the material can be used, for example, to determine the UV index of Sun’s radiation. The hackmanite that will be tested on the space station will be used in a similar fashion, but this property can also be used in everyday applications. We have for example already developed a mobile phone application for measuring UV radiation that can be used by anyone,” explains Sami Vuori.

The international research consortium comprised the Intelligent Materials Chemistry research group and Materials Research Laboratory of University of Turku, Finland, together with University Claude Bernard Lyon 1, France, and the Mineralogical Society of Antwerp, Belgium.



Journal

Proceedings of the National Academy of Sciences

DOI

10.1073/pnas.2202487119

Article Title

The structural origin of the efficient photochromism in natural minerals

Article Publication Date

2-Jun-2022

Share12Tweet7Share2ShareShareShare1

Related Posts

Figure 1

HKUST develops world’s most durable hydrogen fuel cell

July 1, 2022
Aimin Liu, chemistry professor at The University of Texas at San Antonio

Prestigious NSF funding will enable UTSA professor to further demystify body’s metabolic processes

July 1, 2022

When ASD occurs with intellectual disability, a convergent mechanism for two top-ranking risk genes may be the cause

July 1, 2022

Photon-controlled diode: an optoelectronic device with a new signal processing behavior

July 1, 2022

POPULAR NEWS

  • Pacific whiting

    Oregon State University research finds evidence to suggest Pacific whiting skin has anti-aging properties that prevent wrinkles

    37 shares
    Share 15 Tweet 9
  • The pair of Orcas deterring Great White Sharks – by ripping open their torsos for livers

    35 shares
    Share 14 Tweet 9
  • University of Miami Rosenstiel School selected for National ‘Reefense’ Initiative focusing on Florida and the Caribbean

    35 shares
    Share 14 Tweet 9
  • Sharks may be closer to the city than you think, new study finds

    34 shares
    Share 14 Tweet 9

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Tags

Violence/CriminalsVaccinesUrogenital SystemWeather/StormsVirologyVirusVaccineUniversity of WashingtonWeaponryZoology/Veterinary ScienceVehiclesUrbanization

Recent Posts

  • HKUST develops world’s most durable hydrogen fuel cell
  • Prestigious NSF funding will enable UTSA professor to further demystify body’s metabolic processes
  • When ASD occurs with intellectual disability, a convergent mechanism for two top-ranking risk genes may be the cause
  • Photon-controlled diode: an optoelectronic device with a new signal processing behavior
  • Contact Us

© 2019 Bioengineer.org - Biotechnology news by Science Magazine - Scienmag.

No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

© 2019 Bioengineer.org - Biotechnology news by Science Magazine - Scienmag.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
Posting....