• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Friday, August 1, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Science

What causes that peak? Answering a long-standing question for covalent liquids

Bioengineer by Bioengineer
March 1, 2019
in Science
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

IMAGE

Credit: 2019 Hajime Tanaka, Institute of Industrial Science, The University of Tokyo

Tokyo – Materials that have a disordered structure with no regular repeating pattern are described as amorphous. Such materials can be found in nature and also have a variety of applications in technology. However, the disordered nature of these materials makes them more challenging to characterize than crystalline structures.

Now, researchers at The University of Tokyo Institute of Industrial Science have shown that the structure of a particular class of liquids and amorphous materials, known as tetrahedral glass formers, can be understood from experimental measurements. Their findings were published in Science Advances.

When a crystalline material scatters X-rays or neutrons, it produces a well-defined pattern as a result of its structure. In contrast, the patterns produced by liquids and amorphous materials show broad peaks that do not provide the same degree of information. However, liquids and amorphous materials that have a tendency to form a network, such as silica and silicon, are known to exhibit a feature called the first sharp diffraction peak (FSDP).

Many theories linking the properties of the FSDP to the structure of the related material have been presented; however, there is still no accepted consensus on what gives rise to these features. Now researchers have demonstrated that the FSDP is a result of the tetrahedral nature of the local ordering of atoms in the liquid.

“The covalent nature of the bonding in the liquids we studied results in a certain degree of organization on a local level, although the order does not extend over a long range,” study corresponding author Hajime Tanaka explains. “We focused on the tetrahedral unit structure that forms in the materials, and as a result have established a model that is able to support a range of experimental findings.”

The researchers tested their tetrahedron model using simulated and experimental data for numerous oxide, halide, chalcogenide, and monoatomic materials in the liquid or amorphous states. The findings were able to explain the origin of the FSDP as well as other higher wavenumber peaks and features.

“We have shown direct evidence of a two-state structure in which order and disorder coexist in the same network forming liquid,” First author Rui Shi explains. “We hope that our findings will lead to an improved understanding of the properties of tetrahedral liquids and glasses, and consequently have an impact on areas such as earth science and semiconductor materials.”

The direct link between data that can be acquired using standard techniques and quantitative structural information on the degree and range of local order demonstrates the practical significance and potential of the presented model.

###

The article, “Distinct signature of local tetrahedral ordering in the scattering function of covalent liquids and glasses” was published in Science Advances at DOI: 10.1126/sciadv.aav3194.

About Institute of Industrial Science (IIS), the University of Tokyo

Institute of Industrial Science (IIS), the University of Tokyo is one of the largest university-attached research institutes in Japan.

More than 120 research laboratories, each headed by a faculty member, comprise IIS, with more than 1,000 members including approximately 300 staff and 700 students actively engaged in education and research. Our activities cover almost all the areas of engineering disciplines. Since its foundation in 1949, IIS has worked to bridge the huge gaps that exist between academic disciplines and real-world applications.

Media Contact
Hajime Tanaka
[email protected]

Original Source

https://www.iis.u-tokyo.ac.jp/en/news/3053/

Related Journal Article

http://dx.doi.org/10.1126/sciadv.aav3194

Tags: Chemistry/Physics/Materials SciencesIndustrial Engineering/ChemistryMaterialsMolecular PhysicsSuperconductors/Semiconductors
Share12Tweet8Share2ShareShareShare2

Related Posts

Five or more hours of smartphone usage per day may increase obesity

July 25, 2019
IMAGE

NASA’s terra satellite finds tropical storm 07W’s strength on the side

July 25, 2019

NASA finds one burst of energy in weakening Depression Dalila

July 25, 2019

Researcher’s innovative flood mapping helps water and emergency management officials

July 25, 2019
Please login to join discussion

POPULAR NEWS

  • Blind to the Burn

    Overlooked Dangers: Debunking Common Myths About Skin Cancer Risk in the U.S.

    60 shares
    Share 24 Tweet 15
  • Dr. Miriam Merad Honored with French Knighthood for Groundbreaking Contributions to Science and Medicine

    46 shares
    Share 18 Tweet 12
  • Study Reveals Beta-HPV Directly Causes Skin Cancer in Immunocompromised Individuals

    37 shares
    Share 15 Tweet 9
  • Sustainability Accelerator Chooses 41 Promising Projects Poised for Rapid Scale-Up

    35 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

Recent News

Renal GSDME Shields Male Mice from Cisplatin Toxicity

Examining Large-Scale Gene Variants in Parkinson’s

Unveiling Concealed Defects in Plastic Electronics Through Molecular Imaging

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

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

Bioengineer.org © Copyright 2023 All Rights Reserved.