| Mobile Touch Screens Could Soon Feel the Pressure |
| Wednesday, 27 January 2010 11:29 |
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Forget swiping or pinching--the next generation of portable touch-screen devices will be able to distinguish between a gentle touch and a hard poke. Peratech, a U.K. company, has signed a $1.4 million deal to license its pressure-sensing touch-screen technology to Japanese screen manufacturer Nissha, which makes displays for companies including LG and Nintendo. Peratech's technology is one of several approaches that can be packed into portable devices. But it uses a novel quantum mechanism to sense pressure, and this promises to be more sensitive and more efficient than the other approaches. Peratech, which was spun out of a research lab at Durham University in 1996, uses an electrically conductive material dubbed a quantum tunneling composite (QTC). Quantum tunneling occurs when electrons jump between two conductors that are brought close together, but remain separated by an insulating barrier. In Peratech's switches, a polymer acts as the insulating layer. It is embedded with spiky, conductive metallic particles, each about 10 nanometers in size. |
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| A Chameleon Sky | ||
| The sands of time are running out for the central star of this the Hourglass Nebula. With its nuclear fuel exhausted, this brief, spectacular, closing phase of a sun-like star's life occurs as its outer layers are ejected and its core becomes a cooling, fading white dwarf. In 1995, astronomers used the Hubble Space Telescope to make a series of images of planetary nebulae, including the one above. Here, delicate rings of colorful glowing gas (nitrogen-red, hydrogen-green, and oxygen-blue) outline the tenuous walls of the 'hourglass.' The unprecedented sharpness of Hubble's images revealed surprising details of the nebula ejection process and may resolve the outstanding mystery of the variety of complex shapes and symmetries of planetary nebulae. Image Credit: NASA, WFPC2, HST, R. Sahai and J. Trauger (JPL)... | ||
| 03 Sep 2010 | ||
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