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Forcing cancer cells to devour themselves by blocking a protein signal

April 9, 2014

Graphical_abstract_wen_revised

Under stress from chemotherapy or radiation, some cancer cells dodge death by autophagy — eating a bit of themselves — allowing them to essentially sleep through treatment and later awaken as tougher, resistant disease.

But interfering with a single cancer-promoting protein and its receptor can turn this resistance mechanism into lethal, runaway self-cannibalization, researchers at The University of Texas MD Anderson Cancer Center report in the journal… read more

Pattern-recognition system for mobile devices blocks ‘shoulder surfers’

April 9, 2014

LatentGesture system monitors touch interaction to block "shoulder surfing" hackers from picking up passwords (credit: iStock)

Cybersecurity researchers from the Georgia Institute of Technology have developed a new security-software system called LatentGesture that continuously monitors how a user taps and swipes a mobile device. If the movements don’t match the owner’s patterns, the system recognizes the differences and if programmed, can lock the device.

In a recent Georgia Tech lab study, the system was nearly 98 percent accurate on a smartphone and 97 percent… read more

‘Transient electronics’ that dissolve when triggered

April 8, 2014

dissolving electroncis

Reza Montazami, an Iowa State University assistant professor of mechanical engineering, is developing technology he calls “transient materials” or “transient electronics” — special degradable polymer composite materials designed to quickly and completely melt away when a trigger is activated.

A medical device, once its job is done, could harmlessly melt away inside a person’s body. Or, a military device could collect and send its data and then dissolve away,… read more

A video game controller that can sense players’ emotions

April 8, 2014

Modified Xbox controller

Corey McCall, a Stanford University doctoral candidate, is developing a handheld game controller that monitors the player’s autonomic nervous system activity to indicate when a player is bored.

The  prototype controller was born from research conducted in the lab of Gregory Kovacs, a professor of electrical engineering, in collaboration with Texas Instruments.

Autonomic nervous system activity occurs when you get excited or bored, happy or sad, for… read more

Navy plans first live test of electromagnetic railgun on ship in 2016

April 8, 2014

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The U.S. Navy announced today (Apr. 7, 2014) that it plans to install and test a prototype electromagnetic railgun (EM railgun) aboard a joint high-speed vessel in fiscal year 2016 — the first time an electromagnetic railgun will be demonstrated at sea and a significant advance in naval combat.

EM railgun technology uses an electromagnetic force, known as the Lorenz Force, to… read more

Molybdenum disulfide as an alternative to graphene

Fast bottom-up creation of bulk material, better switching are among advantages
April 7, 2014

Schematic diagram of the MoS2 monolayer photosensor depicting the electrical connections and the laser photo-excitation (credit: Néstor Perea-López et al./2D Materials)

Molybdenum disulfide (MoS2) has been put forward by a group of researchers as a potential building block for the next generation of low-cost electrical devices as an alternative to graphene.

Because of its impressive ability to convert light into electricity at with high efficiency, single layers of the semiconducting material have been used to fabricate a widely used device known as a photosensor, which is found in a range… read more

Stick-on electronic patches for health monitoring

Better than fitness trackers on your wrist or clipped to your belt, the inventors say
April 7, 2014

Stickon-patch

Engineers at the University of Illinois at Urbana-Champaign and Northwestern University have developed soft, thin stick-on patches that stretch and move with the skin, using commercially available, off-the-shelf chip-based electronics for sophisticated wireless health monitoring.

The patches stick to the skin like a temporary tattoo and incorporate a unique microfluidic construction, with wires folded like origami to allow the patch to bend and flex without being constrained by the… read more

How to create a large-area visible-light invisibility cloak

Harry Potter-style cloaking finally possible
April 7, 2014

Negative index material (11 layers) transferred to a glass substrate by n nanotransfer printing, with an enlarged view at the bottom left inset (credit:  Li Gao et al./Advanced Optical Materials)

University of Central Florida (UCF) scientists have created the first large-area metamaterial (cloaking material) for the visible-light spectral range*.

Controlling and bending light around an object so it appears invisible to the naked eye is the theory behind fictional invisibility cloaks. But so far, cloaking has been mainly limited to the microwave region or to micron-scale (millionths of a meter) objects in the visible-light region.

But UCF assistant… read more

Virtual robots teach each other Pac-Man and StarCraft video games

Teaching physical robots and humans planned
April 4, 2014

PacMan

Researchers in Washington State University’s School of Electrical Engineering and Computer Science have developed a method to allow a computer to give advice and teach skills to another computer in a way that mimics how a real teacher and student might interact.

The paper by Matthew E. Taylor, WSU’s Allred Distinguished Professor in Artificial Intelligence, was published online in the journal Connection Science.

The researchers had… read more

Quantum cryptography for mobile phones

First "NSA-proof" mobile phone planned
April 4, 2014

Integrated orbital angular momentum devices array (credit: Centre for Quantum Photonics)

An ultra-high-security scheme that could one day get quantum cryptography using Quantum Key Distribution into mobile devices has been developed and demonstrated by researchers from the University of Bristol’s Center for Quantum Photonics (CQP) in collaboration with Nokia.

Currently available quantum cryptography technology is bulky, expensive, and limited to fixed physical locations — often server rooms in a bank.  The team at Bristol has shown… read more

Magnetically controlled nanoparticles cause cancer cells to self-destruct

Avoid harming other tissues
April 4, 2014

SPIONs (Credit: ACS Nano)

Researchers at Lund University in Sweden have developed a technique to use magnetically controlled nanoparticles to force tumor cells to “self-destruct.” without harming surrounding tissue, as with radiotherapy, and tissues elsewhere in the body, as with chemotherapy.

“Our technique is able to attack only the tumor cells,” said Enming Zhang, first author of the study.

Inducing cell suicide

The technique involves getting the nanoparticles into a… read more

First comprehensive roadmap of the mammalian brain

April 3, 2014

A top-down 3-D view of the cortico-connections originating from multiple distinct cortical areas, visualized as virtual tractography (credit: Allen Institute for Brain Science)

Researchers from the Allen Institute for Brain Science have published the Allen Mouse Brain Connectivity Atlas, the first comprehensive, large-scale data set on how the brain of a mammal is wired, described in their paper in Nature. 

The mouse brain’s 75 million neurons are arranged in a structure roughly similar to the human brain’s approximately 100 billion neurons, so they provide a powerful model system… read more

A blueprint for how to build a human brain

April 3, 2014

Image of the human fetal brain, reference atlas, color-coded by structure (credit: Allen Institute)

Researchers at the Allen Institute for Brain Science have generated a blueprint for how to build a human brain at unprecedented anatomical resolution.

This first major report using data from the  the BrainSpan Atlas of the Developing Human Brain is published in the journal Nature this week. The data provide insight into diseases like autism that are linked to early brain development, and to the origins of human… read more

Microsoft introduces Cortana, a personal digital assistant inspired by a Halo AI character

April 3, 2014

Cortana screen on Windows Phone 8.1 (credit: Microsoft)

As part of its Windows Phone 8.1 update announcement Wednesday, Microsoft introduced Cortana, a personal digital assistant with a persona.

“We were inspired by the popular character from Halo who served as a brilliant AI and a deeply personal digital assistant to Master Chief… so we called her Cortana,” said Joe Belfiore, the corporate vice president and manager for Windows Phone Program Management at Microsoft on hisread more

How to instantly turn ‘pencil lead’ (graphite) into diamond

April 3, 2014

slac_transformed_graphene

Stanford University scientists have discovered by accident a way to produce thin diamond films from graphite, which could be useful for a variety of industrial applications, from cutting tools to electronic devices and electrochemical sensors.

The scientists added a few layers of graphene (one-atom thick sheets of graphite) to a platinum support and exposed the topmost layer to hydrogen.

The ‘Midas touch’?

To their surprise, the reaction… read more

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