• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Friday, October 31, 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

Researchers coax particles to form vortices using magnetic fields

Bioengineer by Bioengineer
March 1, 2017
in Science News
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram
IMAGE

Credit: Alexey Snezhko.

In a new study published last week in Science Advances, researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory created tiny swirling vortices out of magnetic particles, providing insight into the behavior that governs such systems–which opens up new opportunities for materials and devices with new properties.

Argonne physicist Alexey Snezhko and his colleagues tipped a pile of tiny magnetic microparticles, each about as large as the diameter of a human hair, into a dish of liquid with a concave bottom. Then they applied an oscillating magnetic field and tinkered with the parameters, observing the behavior of the particles as they began to roll. At just the right settings, the particles spontaneously coalesced into a swirling vortex.

"It's a bit as though you randomly tossed a bunch of balls onto a pool table, and they began to swirl in a circle as they rolled," Snezhko said. "Our study involves mapping this active system and its behaviors, which could inspire new materials and devices with unique capabilities."

The discovery is of interest in the growing field called "active matter" or "active systems," in which groups of individual agents use energy from their environments to form organized systems. This describes the behavior of flocks of birds, schools of fish and even the way our cells build their internal structures.

Similar principles govern the behavior of these systems despite their very different makeup and origins, and scientists want to harness these principles to build new active materials with unique properties — such as materials that could heal themselves, change their properties in response to external stimuli or provide new functionalities.

For example, Snezhko said, the vortices could be used to transport cargo in tiny microfluidic devices — such as biochips or labs-on-a-chip–or to create swirling fluid motion around them to mix components at the microscale.

Snezhko and his colleagues also found that "noise" from particles' surface imperfections was often a key to triggering the flocking behavior.

Unlike earlier studies into similar systems at Argonne that discovered, for instance, how to form moving snakes out of microparticles, which can only be assembled at the surface of a liquid, these vortices exist in bulk liquid — at the solid bottom of a container full of liquid. This offers more versatility to those looking to create tiny machinery using these principles.

###

The other authors on the paper were Andreas Kaiser and Igor Aronson (then at Argonne and Northwestern University, now at Penn State).

The study, "Flocking ferromagnetic colloids," was published February 15th. It was funded by the U.S. Department of Energy's Office of Science. Andreas Kaiser was supported by the German Research Foundation.

Argonne National Laboratory seeks solutions to pressing national problems in science and technology. The nation's first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America's scientific leadership and prepare the nation for a better future. With employees from more than 60 nations, Argonne is managed by UChicago Argonne, LLC for the U.S. Department of Energy's Office of Science. The U.S. Department of Energy's Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time. For more information, visit the Office of Science website.

Media Contact

Jared Sagoff
[email protected]
630-252-5549
@argonne

http://www.anl.gov

############

Story Source: Materials provided by Scienmag

Share12Tweet7Share2ShareShareShare1

Related Posts

On-Farm Trials Boost Grain Micronutrient Levels

On-Farm Trials Boost Grain Micronutrient Levels

October 31, 2025

Addressing Urban Healthcare Overcrowding: Stakeholder Insights

October 31, 2025

Tillage and Stover Impact Root Microbiomes

October 31, 2025

Novel Iron Foam Bimetallic Enhances Supercapacitor Anodes

October 31, 2025
Please login to join discussion

POPULAR NEWS

  • Sperm MicroRNAs: Crucial Mediators of Paternal Exercise Capacity Transmission

    1293 shares
    Share 516 Tweet 323
  • Stinkbug Leg Organ Hosts Symbiotic Fungi That Protect Eggs from Parasitic Wasps

    312 shares
    Share 125 Tweet 78
  • ESMO 2025: mRNA COVID Vaccines Enhance Efficacy of Cancer Immunotherapy

    202 shares
    Share 81 Tweet 51
  • New Study Suggests ALS and MS May Stem from Common Environmental Factor

    136 shares
    Share 54 Tweet 34

About

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

Follow us

Recent News

On-Farm Trials Boost Grain Micronutrient Levels

Addressing Urban Healthcare Overcrowding: Stakeholder Insights

Tillage and Stover Impact Root Microbiomes

Subscribe to Blog via Email

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

Join 67 other subscribers
  • 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.