Tuesday, July 5, 2022
SCIENMAG: Latest Science and Health News
No Result
View All Result
  • Login
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US
No Result
View All Result
Scienmag - Latest science news from science magazine
No Result
View All Result
Home SCIENCE NEWS Nanotechnology

World’s fastest photo-exfoliation

April 19, 2021
in Nanotechnology
0
Share on FacebookShare on Twitter

Osaka City University discovers world’s fastest exfoliation of material with potential use for photoactuator production

Credit: Osaka City University

OSAKA, Japan. Look at any piece of machinery and you will see a complex network of moving parts, or actuators, each with its own function, all working together for a common goal. From this perspective, the way most machines differ is in the way their actuators are powered: excavators rely on compressed liquid (hydraulic), the brake system in a car uses compressed air (pneumatic), and a printer has electricity.

What if the moving parts of a machine could be powered by light? A machine made up of photoactuators would not need direct contact with the power source to move. Among its many possible functions, it could be accurately manipulated within places machines with electrical wiring or circuitry cannot – for example, the capillaries of the human body.

“The problem has been manipulating a material with light at the speed and size appropriate for photomechanical devices”, says graduate student Masato Tamaoki. He was part of a research group, led by Professor Seiya Kobatake of the Graduate School of Engineering, Osaka City University that, using UV light on crystals made of a compound called diarylethene, peeled off crystals the size of 2 – 4 micrometers at the speed of 260 microseconds, making it the world’s fastest exfoliation of a photomechanical material. Their results were published online in Crystal Growth & Design of the American Chemical Society on April 19, 2021.

“My lab has been exploring the photomechanical properties of diarylethene for many years now”, says Professor Kobatake. They found that under UV light, the molecules of the compound demonstrated behaviors such as expansion/contraction, bending, twisting and peeling. “There were only two examples of the peeling behavior, making it a very rare motion,” states Mr. Tamaoki, “we focused on this issue by experimenting with crystal size and photoirradiation conditions”.

They found that under the strain of UV light penetrating relatively all the diarylethene, it would change to a blue color and crack. However, if the light was focused on a vicinity of the crystal, peeling of the exposed section occurred at a surprising 260 microseconds. Comparing this to previously recorded measurements of 10s of seconds to 10s of minutes, “we are very pleased to have discovered the world’s fastest, photoreversible exfoliation behavior, which is expected to become a new manufacturing method for photoactuator materials,” states Mr. Tamaoki.

###

We are Osaka City University – the oldest research university in Osaka. With 9 undergraduate faculties and 11 graduate schools all dedicated to making urban life better, energy cleaner, and people healthier and happier, we have won numerous awards and have produced 2 Nobel laureates. For more information, please visit our website at https://www.osaka-cu.ac.jp/en

Media Contact
James Gracey
[email protected]

Related Journal Article

http://dx.doi.org/10.1021/acs.cgd.1c00270

Tags: Chemistry/Physics/Materials SciencesMaterialsNanotechnology/Micromachines
Share25Tweet16Share4ShareSendShare
  • Neurovascular injury from SARS-CoV-2

    Small NIH study reveals how immune response triggered by COVID-19 may damage the brain

    71 shares
    Share 28 Tweet 18
  • Scientists discover cancer trigger that could spur targeted drug therapies

    67 shares
    Share 27 Tweet 17
  • COVID-19 fattens up our body’s cells to fuel its viral takeover

    98 shares
    Share 39 Tweet 25
  • Researchers uncover life’s power generators in the Earth’s oldest groundwaters

    67 shares
    Share 27 Tweet 17
  • Study shows convalescent plasma doesn’t benefit severely ill patients hospitalized with COVID-19

    65 shares
    Share 26 Tweet 16
  • A new cause of Parkinson’s disease-related cell death

    65 shares
    Share 26 Tweet 16
ADVERTISEMENT

About us

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

Latest NEWS

nTIDE May 2022 COVID Update: Uncertainty about inflation tempers good news for people with disabilities

COVID-19 fattens up our body’s cells to fuel its viral takeover

The pair of Orcas deterring Great White Sharks – by ripping open their torsos for livers

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 190 other subscribers

© 2022 Scienmag- Science Magazine: Latest Science News.

No Result
View All Result
  • HOME PAGE
  • BIOLOGY
  • CHEMISTRY AND PHYSICS
  • MEDICINE
    • Cancer
    • Infectious Emerging Diseases
  • SPACE
  • TECHNOLOGY
  • CONTACT US

© 2022 Scienmag- Science Magazine: Latest Science News.

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....