Category Technology/Electronics

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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Novel Laser Technology for Microchip-size Chemical Sensors

The laser system developed at TU Wien creates many frequencies with equal spacing between them. Credit: TU Wien
The laser system developed at TU Wien creates many frequencies with equal spacing between them. Credit: TU Wien

A special laser system has been developed, using two slightly different frequency combs. This allows for chemical analysis on tiny spaces – it is a millimeter-format chemistry lab. With this new patent-pending technology, frequency combs can be created on a single chip in a very simple and robust manner.

Most lasers have only one color. All the photons it emits have exactly the same wavelength. However, there are also lasers whose light is more complicated. If it consists of many different frequencies, with equal intervals in between, just like the teeth of a comb, it is referred to as a “frequency comb...

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Topological Material Switched off and on for the 1st time

his is an Na3Bi structure shown with sodium atoms white and bismuth atoms blue.
Credit: FLEET

This is an Na3Bi structure shown with sodium atoms white and bismuth atoms blue.
Credit: FLEET

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only 2 years ago, that there are two types of insulators: normal insulators which don’t conduct electricity, and topological insulators – newly discovered materials that conduct electricity only on their edges.

Now, FLEET researchers at Monash University, Australia, have for the first time successfully ‘switched’ a material between these two states of matter via application of an electric-field. This is the first step in creating a functioning topological transistor – a proposed new generation of ultra-low energy electronic devices.

Ultra-low energy electronics such as topol...

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Method to Transfer entire 2D circuits to any Smooth Surface


Illustration of flexible, 2-D circuit.
Credit: Zehua Jin/Rice University

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a 2D solution to do just that. Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices to report on what they perceive.

Electronically active 2D materials have been the subject of much research since the introduction of graphene in 2004. Even though they are often touted for their strength, they’re difficult to move to where they’re needed without destroying them.

The Ajayan and Lou groups, along with the lab of Rice engineer Jacob Robinson, have a new way to keep the materials and their associate...

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