Without a specific search term in mind, it can be surprisingly hard to find information on the Internet , or to know how to start searching. To help, computer scientists have created the first fully automated computer program that teaches everything there is to know about any visual concept. Called Learning Everything about Anything (LEVAN), the program searches millions of books and images to learn all possible variations of a concept.
In semiconductor-based components, high mobility of charge-carrying particles is important. In organic materials, however, it is uncertain to what degree the molecular order within the thin films affects the mobility and transport of charge carriers. Using a new imaging method, researchers have shown that thin-film organic semiconductors contain regions of structural disorder that could inhibit the transport of charge and limit efficiency.
Referees may soon have a new way of determining whether a football team has scored a touchdown or gotten a first down. Researchers from North Carolina State Univ. and Carnegie Mellon Univ., in collaboration with Disney Research, have developed a system that can track a football in 3-D space using low-frequency magnetic fields.
Engineers at the Univ. of Arkansas have designed integrated circuits that can survive at temperatures greater than 350 C—or roughly 660 F. The team achieved the higher performance by combining silicon carbide with wide temperature design techniques. In the world of power electronics and integrated circuits, their work represents the first implementation of a number of fundamental analog, digital and mixed-signal blocks.
In early March, a mysterious ship the size of a large passenger ferry left Romania and plotted a course toward Scandinavia. About a month later, at the fenced-in headquarters of Norway's military intelligence service, the country's spychief disclosed its identity. It was a $250 million spy ship, tentatively named Marjata, that will be equipped with sensors and other technology to snoop on Russia's activities in the Arctic beginning in 2016.
Imagine watching a procedure performed live through the eyes of the surgeon. That’s exactly what surgical leaders in the U.S. were able to do while overseeing surgeons training in Paraguay and Brazil with the help of UCLA doctors and Google Glass. UCLA surgeon Dr. David Chen and surgical resident Dr. Justin Wagner have made it their mission to teach hernia surgery around the world and are harnessing the latest technologies to help.
An advance has been achieved towards next-generation ultrasonic imaging with potentially 1,000 times higher resolution than today’s medical ultrasounds. Researchers with Lawrence Berkeley National Laboratory have demonstrated a technique for producing, detecting and controlling ultra-high-frequency sound waves at the nanometer scale.
Research is conducted worldwide to develop quantum computers. Quantum computers could tackle specialized computational problems such as integer factorization or big data analysis much faster than conventional digital computers. Quantum computers will use one of a number of possible approaches to create quantum bits to compute and store data, giving them unique advantages over computers based on silicon transistors.
At the 2014 Symposium on VLSI Technology in Triangle Park, N.C., researchers from the Univ. of California, Santa Barbara introduced the highest-performing class III-V metal-oxide semiconductor field-effect transistors (MOSFETs) yet demonstrated. The new MOSFETs exhibit, in an industry first, on-current, off-current and operating voltage comparable to or exceeding production silicon devices, while also staying relatively compact.
Tomography enables the interior of a vast range of objects to be depicted in 3-D. Until now, relevant details on a scale of a few nanometers were only visible with tomography methods that required very thin samples. With the aid of a special prototype light source in Switzerland, researchers have now achieved a 3-D resolution of 16 nm on a nanoporous glass test sample, a feat that is unmatched for x-ray tomography.
Crystal IS has introduced Optan, the first commercial semiconductor based on native aluminum nitride (AIN) substrates. Optan increases detection sensitivity from monitoring of chemicals in pharma manufacturing to drinking water analysis.
Researchers in Spain have recently demonstrated, through experimentation, that a nonlinear interferometer can outperform an equivalent linear measurement, confirming theoretical predictions that nonlinear systems can outperform their linear counterparts if enough photons are used in the measurement. The result answers a fundamental quantum mechanics questions and could enable more sensitive measurements from interferometers.
Researchers at Sandia National Laboratories, along with collaborators from Rice Univ. and the Tokyo Institute of Technology, are developing new terahertz detectors based on carbon nanotubes that could lead to significant improvements in medical imaging, airport passenger screening, food inspection and other applications.
Simple solid-state lasers consist of only one material. But quantum cascade lasers are made of a perfectly optimized layer system of different materials so the wavelength of the laser can be tuned. Now a method has been developed in Austria to create a laser and a detector at the same time, on one single chip, in such a way that the wavelength of the laser perfectly matches the wavelength to which the detector is sensitive.
Purdue Univ. researchers who developed a new approach to more effectively teach large numbers of engineering students are recommending that the approach be considered for adoption by universities globally. The system, called the Purdue Mechanics Freeform Classroom, allows students to interact with each other and faculty online while accessing hundreds of instructional videos and animations. It has been used for more than two years.
Scientists in Switzerland have invented a molecule that can easily and quickly show how much drug is in a patient’s system. All that is needed to perform accurate measurements is a conventional digital camera. The result of innovative protein engineering and organic chemistry, the molecule has been shown to work on a range of common drugs for cancer, epilepsy and immunosuppression.
HorseFly has eight rotors, a wirelessly recharging battery and a mission to deliver merchandise right to your doorstep. The new drone is the result of collaborative efforts by the Univ. of Cincinnati and AMP Electric Vehicles makers of the WorkHorse all-electric delivery truck. The newly designed, autonomous unmanned aerial vehicle was developed to work in tandem with AMP's delivery trucks to deliver packages in an efficient way.
Polymer scientists in Ohio have demonstrated how a transparent layer of electrodes on a polymer surface could be extraordinarily tough and flexible, withstanding repeated scotch tape peeling and bending tests. According to its developers, the new material could replace conventional indium tin oxide coatings currently used for touchscreens.
In 2010, telemedicine was used to guide the insertion of a chest tube in a 72-year-old South Dakota farmer who had been pinned by a cow. Physicians in Sioux Falls talked am inexperienced doctor through the steps to stop the bleeding and drain the blood collecting inside the man. It's a system that's gaining wider use across the rural U.S., where there are often few primary care doctors and even fewer emergency rooms.
Certain bonds connecting biological cells get stronger when they’re tugged. Those bonds are known as catch bonds and they’re formed by common adhesion proteins called cadherins. Using computer simulations based on data from previous experiments, researchers in Iowa have answered the question about how these bonds get stronger under force.
With precarious particles called polaritons that straddle the worlds of light and matter, Univ. of Michigan researchers have demonstrated a new, practical and potentially more efficient way to make a coherent laser-like beam. They have made what's believed to be the first polariton laser that is fueled by electrical current as opposed to light, and also works at room temperature, rather than way below zero.
Researchers in California have created a nanoscale magnetic component for computer memory chips that could significantly improve their energy efficiency and scalability. The design brings spintronics one step closer to being used in computer systems by adopting a new strategy called “spin-orbit torque” that eliminates the need for a magnetic field for switching processes.
The potential of terahertz waves has yet to be reached because they are difficult to generate and manipulate. Current sources are large devices that require complex vacuum, lasers and cooling systems. A Northwestern Univ. team is the first to produce terahertz radiation in a simplified system. Their room-temperature, compact, continuous terahertz radiation source is six times more efficient than previous systems.
A cooing, gesturing humanoid on wheels that can decipher emotions has been unveiled in Japan by billionaire Masayoshi Son, who says robots should be tender and make people smile. The machine, called “Pepper”, has no legs, but has gently gesticulating hands. It recently appeared on a stage in a Tokyo suburb along with announcement that it will go on sale in Japan next year for the equivalent of US$1,900.
The need for robust password security has never been more critical than now, as people use smartphones or tablets to pay bills and store personal information. A new Rutgers study shows that free-form gestures can be used to unlock phones and grant access to apps. These gestures are less likely to be observed and reproduced than than traditional methods such as typed passwords.