Sunday, January 16, 2011

CS: Discussions on the interwebs

We just started a discussion on science publication on twitter (check the recent entries with @igorcarron). If you have some thoughts, please use the #sciencepub hashtag. For the past month, there were several discussions of interest to the subjects treated on Nuit Blanche. In no particular order, here there are:


Terahertz Technology Blog:


Image Sensor World
Kinect Hacks blog: (on top of being a structured illumination example of great commerrcial value, the Kinect can be useful for mindmapping)

Electronsholes points to two recent arxiv papers that may have some impact on imaging and sampling. These papers are: Luneburg lens in silicon photonics by Andrea Di Falco, Susanne C Kehr, Ulf Leonhardt. The abstract reads:
The Luneburg lens is an aberration-free lens that focuses light from all directions equally well. We fabricated and tested a Luneburg lens in silicon photonics. Our technique is sufficiently versatile for making perfect imaging devices on silicon platforms
and Hybrid spintronics and straintronics: A magnetic technology for ultra low energy computing and signal processing by Kuntal Roy, Supriyo Bandyopadhyay, Jayasimha Atulasimha. The abstract reads:
The authors show that the magnetization of a magnetostrictive/piezoelectric multiferroic single-domain shape-anisotropic nanomagnet can be switched with very small voltages that generate strain in the magnetostrictive layer. This can be the basis of ultralow power computing and signal processing. With appropriate material choice, the energy dissipated per switching event can be reduced to $\sim$45 $kT$ at room temperature for a switching delay of $\sim$100 ns and $\sim$70 $kT$ for a switching delay of $\sim$10 ns, if the energy barrier separating the two stable magnetization directions is $\sim$32 $kT$. Such devices can be powered by harvesting energy exclusively from the environment without the need for a battery.

Light-Toned Mounds in Ganges Chasma (ESP_017173_1715)on Mars.
Credit: NASA/JPL/University of Arizona

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