Magnets make droplets dance

via Aalto University

This is the first time researchers have demonstrated reversible switching between static and dynamic self-assembly.

Researchers from Aalto University and Paris Tech have placed water droplets containing magnetic nanoparticles on strong water repellent surfaces and have made them align in various static and dynamic structures using periodically oscillating magnetic fields. This is the first time researchers have demonstrated reversible switching between static and dynamic self-assembly.

“We are conducting this line of research because it opens up a way to create new responsive and intelligent systems and materials,” said Dr. Robin Ras of Aalto University.

Self-assembly is a process in which multiple components form organized structures or patterns without external direction. The process is very interesting both for scientists and industry, because many natural systems rely on self-assembled structures and they can further inspire technological applications.

“The structure formation can either be static, driven by energy minimization, or dynamic, driven by continuous energy feed. Over the years we have managed to create functional materials based on static self-assembled hierarchies. This model system paves the way towards even more versatile dynamic materials, wherein the structures are formed by feeding energy,” said Academy Professor Olli Ikkala.

By using the new model system, the researchers demonstrated that static droplet patterns can transform reversibly into dynamic ones when energy is fed to the system via an oscillating magnetic field. The transition was observed to be complex and the most complicated patterns emerged when the energy feed was just enough to enter the dynamic self-assembly regime.

In addition to the hard science behind the self-assembly, the droplet patterns are also visually captivating.

See Also

“In some patterns, the motion of the droplets resembles that of dancing. We find it simply beautiful,” said Dr. Jaakko Timonen.

Read more . . .


The Latest Bing News on:
Reversible switching between static and dynamic self-assembly
  • Switching Between Beta Blockers in Heart Failure Patients: Rationale and Practical Considerations
    on May 24, 2024 at 5:00 pm

    Two protocols for switching between carvedilol, a third-generation nonselective agent with vasodilation through α 1 blockade, and a β 1-selective agent (e.g., metoprolol, atenolol) are described ...

  • Switching Between Beta Blockers in Heart Failure Patients: Rationale and Practical Considerations
    on May 24, 2024 at 5:00 pm

    Patients should be reassured that these effects are usually self-limited ... [70] recently reported on switching between β blockers (metoprolol and carvedilol) in 68 patients treated with ...

  • Code Switch
    on May 21, 2024 at 5:00 pm

    food and everything in between. This podcast makes all of us part of the conversation — because we're all part of the story. Code Switch was named Apple Podcasts' first-ever Show of the Year in ...

  • DNA nanomachines
    on May 6, 2024 at 7:37 am

    We start by showing how DNA nanostructures can be made to switch between two states in response ... of semiconductor lithography improves, so self-assembly and top-down nanofabrication will ...

  • Choosing the Right Harness for Your Dog: Unraveling the Debate between Reversible and No-Pull Options
    on December 7, 2023 at 12:17 pm

    In this article, we will delve into the differences between these ... allowing you to switch up your dog’s look with a simple flip. Beyond aesthetics, reversible harnesses are appreciated ...

  • How to switch credit cards
    on June 6, 2023 at 11:48 am

    If you’re switching between rewards structures (going from a cash back card to a travel card, for example), you’ll want to talk to your credit card issuer about what will happen to your ...

  • Exploring the benefits and applications of self-assembly
    on April 25, 2023 at 10:58 am

    This allows cells to carry out a wide range of processes, from generating energy to transmitting signals between cells. At its core, self-assembly is all about the interactions between individual ...

  • You can now switch between accounts in Microsoft 365 web apps without signing out0 0
    on April 26, 2022 at 11:00 pm

    Last month, we reported that Microsoft is working on a capability that will allow customers to switch between different accounts with ease when using Microsoft 365 web apps such as Excel ...

  • SongShift 3.0 and Switching Between Apple Music and Spotify
    on November 14, 2017 at 3:00 am

    I haven’t been able to choose between Apple Music and Spotify (I’m not sure I’ll ever be fully satisfied with just one of them), but SongShift has alleviated most of the issues with switching between ...

  • Self-Assembly
    on May 1, 2015 at 2:48 am

    Functional materials can be created with rational self-assembly of building blocks over a broad range of length scales, from small molecules and polymers to nanoparticles and nanowires. Northwestern ...

The Latest Google Headlines on:
Reversible switching between static and dynamic self-assembly

[google_news title=”” keyword=”reversible switching between static and dynamic self-assembly” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]

The Latest Bing News on:
Self assembly
The Latest Google Headlines on:
Self assembly

[google_news title=”” keyword=”self assembly” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]

What's Your Reaction?
Don't Like it!
I Like it!
Scroll To Top