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Graphene microphone outperforms traditional nickel and offers ultrasonic reach

01-Dec-2015

The researchers, based at the University of Belgrade, Serbia, created a vibrating membrane - the part of a condenser microphone which converts the sound to a current - from graphene, and were able to show up to 15 dB higher sensitivity compared to a commercial microphone, at frequencies up to 11 ...

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Exploring the physics of a chocolate fountain

26-Nov-2015

A mathematics student has worked out the secrets of how chocolate behaves in a chocolate fountain, answering the age-old question of why the falling 'curtain' of chocolate surprisingly pulls inwards rather than going straight downwards. "Chocolate fountains are just cool, aren't they!" says Adam ...

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Using magnetic permeability to store information

14-Sep-2015

Scientists have made promising steps in developing a new magnetic memory technology, which is far less susceptible to corruption by magnetic fields or thermal exposure than conventional memory. The findings, which report the use of magnetic permeability - how easily a magnetic field will ...

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'RoboClam' hits new depths as robotic digger

10-Apr-2014

A digging robot inspired by the unique mechanisms employed by the Atlantic razor clam has been created by a group of researchers in the US. The robot, dubbed RoboClam, is able to dig with extreme efficiency by transforming the surrounding soil from a solid into a liquid, and could have a variety ...

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Next generation of 2D materials

07-Apr-2014

As the properties and applications of graphene continue to be explored in laboratories all over the world, a growing number of researchers are looking beyond the one-atom-thick layer of carbon for alternative materials that exhibit similarly captivating properties. One of these materials is ...

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Anti-counterfeit 'fingerprints' made from silver nanowires

24-Mar-2014

Unique patterns made from tiny, randomly scattered silver nanowires have been created by a group of researchers from South Korea in an attempt to authenticate goods and tackle the growing problem of counterfeiting. The nanoscale 'fingerprints' are made by randomly dumping 20 to 30 individual ...

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Against abrupt stop to geoengineering method

19-Feb-2014

As a range of climate change mitigation scenarios are discussed, University of Washington researchers have found that the injection of sulfate particles into the atmosphere to reflect sunlight and curb the effects of global warming could pose a severe threat if not maintained indefinitely and ...

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Brain process takes paper shape

14-Feb-2014

A paper-based device that mimics the electrochemical signalling in the human brain has been created by a group of researchers from China. The thin-film transistor (TFT) has been designed to replicate the junction between two neurons, known as a biological synapse, and could become a key component ...

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Carbon nanotube sponge shows improved water clean-up

20-Jan-2014

A carbon nanotube sponge capable of soaking up water contaminants, such as fertilisers, pesticides and pharmaceuticals, more than three times more efficiently than previous efforts has been presented in a new study published. The carbon nanotube (CNT) sponges, uniquely doped with sulphur, also ...

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3D printing used as a tool to explain theoretical physics

10-Dec-2013

Students may soon be able to reach out and touch some of the theoretical concepts they are taught in their physics classes thanks to a novel idea devised by a group of researchers from Imperial College London. In new study published in the journal EPL, the researchers have successfully ...

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