Category Technology/Electronics

Dynamic Hydrogel used to make ‘Soft Robot’ Components and LEGO-like building blocks

LEGO-like hydrogel building blocks patterned with tiny fluid channels can be assembled into complex microfluidic devices and then sealed tightly together.
Credit: Wong Lab / Brown University

Using a new type of dual polymer material capable of responding dynamically to its environment, Brown University researchers have developed a set of modular hydrogel components that could be useful in a variety of “soft robotic” and biomedical applications.

The components, which are patterned by a 3D printer, are capable of bending, twisting or sticking together in response to treatment with certain chemicals. For a paper published in the journal Polymer Chemistry, the researchers demonstrated a soft gripper capable of actuating on demand to pick up small objects...

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Levitating Objects with Light

Conceptual illustration of a nano-patterned object reorienting itself to remain in a beam of light.
Credit: Courtesy of the Atwater laboratory

Nanoscale patterning could enable precise manipulation of objects on many scales. Researchers at Caltech have designed a way to levitate and propel objects using only light, by creating specific nanoscale patterning on the objects’ surfaces. Though still theoretical, the work is a step toward developing a spacecraft that could reach the nearest planet outside of our solar system in 20 years, powered and accelerated only by light.

A paper describing the research appears online in the March 18 issue of the journal Nature Photonics...

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Seeing through a Robot’s Eyes Helps those with Profound Motor Impairments

Retrieving a cup with the robot
Showing its capabilities as a body surrogate, a PR2 controlled remotely by an individual with profound motor deficits picks up a cup in a research laboratory at the Georgia Institute of Technology. (Credit: Phillip Grice, Georgia Tech)

An interface system that uses augmented reality technology could help individuals with profound motor impairments operate a humanoid robot to feed themselves and perform routine personal care tasks such as scratching an itch and applying skin lotion. The web-based interface displays a “robot’s eye view” of surroundings to help users interact with the world through the machine.

The system, described March 15 in the journal PLOS ONE, could help make sophisticated robots more useful to people who do not have experience operating complex robotic systems...

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Bat Flight Model can Inspire Smarter, Nimbler Drones

When a bat wing flaps, it forms swirling masses of air known as vortex rings
Credit: University of British Columbia

Engineers have captured the full complexity of bat flight in a 3D computer model for the first time, potentially inspiring the future design of better drones and other aerial vehicles. Bats are among nature’s best flyers – able to fly for long periods of time, maneouvre in mid-air with pinpoint precision and get into some very tight spaces. However, scientists have not fully understood exactly how bats manage to fly so well, until now.

Engineers at the University of British Columbia have captured the full complexity of bat flight in a 3D computer model for the first time, potentially inspiring the future design of better drones and other aerial vehicles.

Researcher...

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