October 26, 2016,
Physics, Technology/Electronics, Chemistry/Nanotechnology
(a) Schematic of the multimaterial projection microstereolithography system. [(b) and (e)] Computer-aided designs and fabricated samples in [(c) and (f)] three-dimensional and [(d) and (g)] two-dimensional views of the fabricated unit cell and 2 by 2 lattice, respectively.
October 26, 2016,
Physics, Technology/Electronics
A magentic cup-like shape, created in the 3D-printer. Credit: Image courtesy of Vienna University of Technology
For the 1st time, magnets can be made with a 3D printer. It is difficult to produce a permanent magnet with a magnetic field of a specific pre-determined shape. That is, until now, thanks to TU Wien: for the first time ever, permanent magnets can be produced using a 3D printer. This allows magnets to be produced in complex forms and precisely customised magnetic fields, required, for example, in magnetic sensors.
“The strength of a magnetic field is not the only factor,” says Dieter Süss, Head of Christian-Doppler Advanced Magnetic Sensing and Materials lab, TU Wien...
October 25, 2016,
Physics, Technology/Electronics
This graphic illustrates how a flat-screen Fresnel zone wireless power transfer system could charge smart devices in your living room. Credit: Duke University
A flat-screen panel that resembles a TV on your living room wall could one day remotely charge any device within its line of sight. Engineers at the University of Washington, Duke University and Intellectual Ventures’ Invention Science Fund (ISF) show that the technology already exists to build such a system—it’s only a matter of taking the time to design it. “There is an enormous demand for alternatives to today’s clunky charging pads and cumbersome cables, which restrict the mobility of a smart phone or a tablet...
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October 24, 2016,
Physics, Technology/Electronics, Chemistry/Nanotechnology
Compact sensor providing room-temperature operation of monolithic surface-active lasers and detectors integrated on the same chip. The differentiation between emitter and detector is eliminated, which enables mutual commutation. Proof-of-principle gas measurements with a limit of detection below 400 ppm are demonstrated. This concept enables a crucial miniaturization of sensing devices.
In technological gas detection there are a whole host of methods available including infrared lasers, passing a laser beam through the gas to an adjacent separate detector, which measures the degree of light attenuation it causes...
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