Category Physics

3D-printed Robot Hand Plays the Piano


Robot hand playing the piano.
Credit: Josie Hughes

Scientists have developed a 3D-printed robotic hand which can play simple musical phrases on the piano by just moving its wrist. And while the robot is no virtuoso, it demonstrates just how challenging it is to replicate all the abilities of a human hand, and how much complex movement can still be achieved through design.

The robot hand, developed by researchers at the University of Cambridge, was made by 3D-printing soft and rigid materials together to replicate of all the bones and ligaments – but not the muscles or tendons – in a human hand...

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Mighty Morphing materials take complex shapes

A face made of a unique polymer at Rice University takes shape when cooled and flattens when heated. The material may be useful in the creation of soft robots and for biomedical applications.
Credit: Jeff Fitlow/Rice University

Sophisticated shape-shifters for soft robots, biomedical applications. Rice University scientists have created a rubbery, shape-shifting material that morphs from one sophisticated form to another on demand.

The shapes programmed into a polymer by materials scientist Rafael Verduzco and graduate student Morgan Barnes appear in ambient conditions and melt away when heat is applied. The process also works in reverse.

The smooth operation belies a battle at the nanoscale, where liquid crystals and the elastomer in which they’re embedded fight for control...

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Flexible Thermoelectric Generator Module: A silver bullet to fix waste energy issues


Photo and schematic design of the FlexTEG module, photo of Bismuth-telluride (Bi-Te) semiconductor chips, and voltage and power as a function of the current for the FlexTEG module at different temperature gradients.
Credit: Osaka University

A team of researchers led by Osaka University developed an inexpensive large-scale flexible thermoelectric generator (FlexTEG) module with high mechanical reliability for highly efficient power generation. Through a change in direction of the top electrodes at the two sides of the module and the use of high density packaging of semiconductor chips, the FlexTEG module has more flexibility in any uniaxial direction...

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An Energy-efficient way to stay Warm: Sew High-Tech Heating Patches to your Clothes


This image shows how to make a personal heating patch from polyester fabric fused with tiny silver wires, using pulses of intense light from a xenon lamp.
Credit: Hyun-Jun Hwang and Rajiv Malhotra/Rutgers University-New Brunswick

Personal patches could reduce energy waste in buildings, Rutgers-led study says. What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes – while significantly reducing your electric bill and carbon footprint?

Engineers at Rutgers and Oregon State University have found a cost-effective way to make thin, durable heating patches by using intense pulses of light to fuse tiny silver wires with polyester...

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