United Nations weapons inspectors could have an easier time in the future locating nuclear materials. Researchers at the University of Nebraska-Lincoln developed a fingertip-sized neutron detection device built around a boroncarbide semiconductor diode. The highly sensitive device can detect neutrons emitted by materials that fuel nuclear weapons. "This is a leapfrog technology in neutron detection," said Peter Dowben, UNL physicist who first fabricated a boron carbide semiconductor. Using Dowben's semiconductor, the research team built a detector about the size of one LEGO® block, which the researchers say is more efficient, lighter, and tougher than existing detectors. It can be powered with small batteries or even solar cells and can withstand corrosion and extremely high temperatures, says Brian Robertson, associate professor of mechanical engineering at UNL. The device could also be used to monitor nuclear weapons storage and other national security applications. Patents on the semiconductor process and the detector are pending. For more information, contact Brian Robertson at (402) 417-5054 or firstname.lastname@example.org.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.