Category Physics

True-meaning Wearable Displays: Self-powered, washable and wearable


Schematic and photo of a washable wearing display module.
Credit: KAIST

Smart clothing has had a problem with its power sources and moisture permeability, which causes the devices to malfunction. This problem has now been overcome by a KAIST research team, who developed a textile-based wearable display module technology that is washable and does not require an external power source.

To ease out the problem of external power sources and enhance the practicability of wearable displays, Professor Kyung Cheol Choi from the School of Electrical Engineering and his team fabricated their wearing display modules on real textiles that integrated polymer solar cells (PSCs) with organic light emitting diodes (OLEDs).

PSCs have been one of the most promising candidates for a next-generation...

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4D-printed materials can be Stiff as Wood or Soft as Sponge

Rutgers engineers’ unique smart materials change shape as temperatures change. The flexible, lightweight materials could lead to better shock absorption, morphing airplane or drone wings, soft robotics and tiny implantable biomedical devices. Their research is published in the journal Materials Horizons.

3D printing, also known as additive manufacturing, turns digital blueprints to physical objects by building them layer by layer. 4D printing is based on this technology, with one big difference: it uses special materials and sophisticated designs to print objects that change shape with environmental conditions such as temperature acting as a trigger, said senior author Howon Lee, an assistant professor in the Department of Mechanical and Aerospace Engineering...

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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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