. 24/7 Space News .
A fascinating phase transition: From one liquid state to another
by Staff Writers
Tokyo, Japan (SPX) Mar 27, 2019

Time evolution of dielectric loss spectra during liquid-liquid transition of triphenyl phosphite at 214 K. The horizontal axis is the measurement frequency. The frequency of the peak shifts to lower frequencies with time, the dynamics of liuquid is drastic slowing down of with liquid-liquid transition.

A team at The University of Tokyo described in unprecedented detail the rare phenomenon called "liquid-to-liquid phase transitions" in a pure substance. By showing how a liquid made of just one type of molecule can switch between liquid and glassy states, this research may lead to a novel way to control the transport properties of a liquid.

Phase transitions are a familiar part of daily life. Whenever you see ice melting (solid to liquid), or steam coming from a teakettle (liquid to gas), you've just experienced a phase transition.

However, the study of how one arrangement of molecules changes into another reveals complex details about the strength of their interactions. In conventional phase transitions, as with an iron bar melting into molten metal, added heat causes the atoms to vibrate so violently that they break free of their solid lattice arrangement and assume a liquid form. The team at The University of Tokyo studied a much rarer type of phase transition: from one liquid state to another.

In this research, they found that, even without changing temperature, relatively free-flowing triphenyl phosphite could gradually vitrify into a glassy state, in which the molecules remain disordered but are much less mobile. The different phases were identifiable experimentally based on how quickly the molecules could relax after being perturbed.

"Contrary to intuition, there has been a growing body of experimental and theoretical evidence that even a single-component substance may have multiple liquid states," says lead author Hajime Tanaka.

They found that the phase transition can occur in two very different ways. The first is called "nucleation and growth," a slow process that requires the emergence of one phase in the other overcoming a barrier to get started.

The other type is spinodal decomposition, in which the transition can smoothly proceed without any barrier. The researchers also discovered a critical temperature, above which only nucleated growth could occur, but below this temperature, spinodal decomposition was possible.

"From the viewpoint of practicality, triphenyl phosphite may be one of the best systems for studying liquid-to-liquid transitions, since the transformation takes place at ambient pressure and moderate temperatures," says first author Ken-ichiro Murata.

"Phase transitions, particularly those that involve a change from a liquid to a glassy state, are often used in the manufacturing of polymers. This research may greatly enhance our ability to optimize and control these processes."

Research Report: "Link between molecular mobility and order parameter during liquid-liquid transition of a molecular liquid,"

Related Links
Institute of Industrial Science, The University of Tokyo
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

At the limits of detectability
Munich, Germany (SPX) Mar 11, 2019
While spectroscopic measurements are normally averaged over myriad molecules, a new method developed by researchers at the Technical University of Munich (TUM) provides precise information about the interaction of individual molecules with their environment. This will accelerate the identification of efficient molecules for future photovoltaic technologies, for example. An international team led by the TUM chemist Professor Jurgen Hauer has now succeeded in determining the spectral properties of i ... 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

ESA studies water in space

Spacewalkers Complete Battery Swaps for Station Power Upgrades

The time to apply to space for humanity is now!

NASA schedules its first women-only spacewalk

SLS engine section approaches finish line for first flight

Arianespace orbits 600th satellite, the PRISMA EO satellite for Italy

Rocket Crafters pivots with new patents for 3D-printed fuel

Ariane 6 maiden flight will deploy satellites for OneWeb, additional launches booked

Laser blasts show asteroid bombardment, hydrogen make great recipe for life on Mars

Google and Haughton-Mars Project Partner on Moon-Mars Exploration Prep

ExoMars landing platform arrives in Europe with a name

NASA's Mars 2020 rover is put to the test

Super-powerful Long March 9 said to begin missions around 2030

China preparing for space station missions

China's lunar rover studies stones on moon's far side

China improves Long March-6 rocket for growing commercial launches

Inmarsat agrees to $3.4 bn takeover from consortium

OneWeb starts to mass-produce satellites in Florida

UAE announces pan-Arab body for space programme

Lockheed Martin develops world-first LTE-Over-Satellite System

Raytheon to update Advanced Synthentic Aperture Radar for U-2 Dragon Lady

At the limits of detectability

Raytheon tests EASR all-purpose surveillance radar for U.S. Navy

Air Force, education and industry partners work together to gather space radiation data

Icy giant planets in the laboratory

Neural Networks Predict Planet Mass

Astrobiology seminar aims to inspire a look into the bounds of life

Carbon monoxide detectors could warn of extraterrestrial life

Jupiter's unknown journey revealed

A Prehistoric Mystery in the Kuiper Belt

Ultima Thule in 3D

SwRI-led New Horizons research indicates small Kuiper Belt objects are surprisingly rare

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.