Category Physics

Tiny Soft Robot can Split into Tinier Bits then Reassemble after Passage Through Small Spaces

Tiny soft robot can be split into tinier bits to allow for passage through small spaces
Overview of trans-scale maneuver and scale reconfiguration strategies of the scale-reconfigurable miniature ferrofluidic robots (SMFRs). (A) Trans-scale control of the SMFR: locomotion of the centi-FR, milli-FR, and micro-FR based on magnetic gradient, both magnetic gradient and torque, and magnetic torque only, respectively. (B) Response behaviors of ferrofluid droplets in magnetic fields. (C) The SMFR is manipulated by a custom-designed magnetic actuation system (the M3RA system) composed of four electromagnets, a spherical permanent magnet (SPM), and a motorized translation stage. To easily observe the internal composition of the system, we hide a quarter of the structure...
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Machine Learning Generates 3D Model from 2D Pictures

Researchers from the McKelvey School of Engineering at Washington University in St. Louis have developed a machine learning algorithm that can create a continuous 3D model of cells from a partial set of 2D images that were taken using the same standard microscopy tools found in many labs today.

Their findings were published Sept. 16 in the journal Nature Machine Intelligence.

“We train the model on the set of digital images to obtain a continuous representation,” said Ulugbek Kamilov, assistant professor of electrical and systems engineering and of computer science and engineering. “Now, I can show it any way I want. I can zoom in smoothly and there is no pixelation.”

The key to this work was the use of a neural field network, a particular kind of machine learning system that...

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Physicists Generate New Nanoscale Spin Waves

Physicists generate new nanoscale spin waves
Illustration of the experiment. Credit: Dreyer et al, Nature Communications (CC-BY-SA 4.0)

Strong alternating magnetic fields can be used to generate a new type of spin wave that was previously just theoretically predicted. This was achieved for the first time by a team of physicists from Martin Luther University Halle-Wittenberg (MLU). They report on their work in the scientific journal Nature Communications and provide the first microscopic images of these spin waves.

The basic idea of spintronics is to use a special property of electrons – spin – for various electronic applications such as data and information technology. The Spin is the intrinsic angular momentum of electrons that produces a magnetic moment...

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The Laser Breakthrough that could make Tech even Faster

The laser breakthrough that could make tech even faster
The laser tool developed by the UQ team. Credit: Dr Martin Plöschner

Lasers have become a major part of our day-to-day lives. From phones and tablets to self-driving cars and data communication—even the information you’re reading right now is likely being delivered to you via lasers.

The technology’s applications are so broad even the researchers who deal with lasers daily are continuously amazed.

Among them is University of Queensland Research Fellow Dr. Martin Plöschner from the School of Information Technology and Electrical Engineering (ITEE).

“I’ve been working with lasers for the past 15 years and yet I’m often surprised to find them in the most unexpected places,” Dr. Plöschner said.

“In many of their applications, lasers operate in part of the spectrum which is...

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