At the center of modern technology lies the logic circuitry provided by semiconductor devices. Extending circuit logic to the realm of nanotechnology requires the construction of atomic-scale systems, which has proven challenging. Both the electric nature of individual atoms and the need to place them at specific points within a crystal lattice has kept scientists from creating atom-scale transistors until the present.
Now, a group of researchers has fabricated a single-atom transistor by introducing one phosphorous atom into a silicon lattice. Through the use of a scanning tunnelling microscope (STM) and hydrogen-resist lithography, Martin Fuechsle et al. placed the phosphorous atom precisely between very thin silicon leads, allowing them to measure its electrical behavior. The results show clearly that we can read both the quantum transitions within the phosphorous atom and its transistor behavior. No smaller solid-state devices are possible, so systems of this type reveal the limit of Moore’s lawâ€”the prediction about the miniaturization of technologyâ€”while pointing toward solid-state quantum computing devices.
from Ars Technica
In May of last year NVIDIA was on a roll. Hot off the release of the first Tegra 2 based phones, NVIDIA announced the intent to acquire baseband manufacturer Icera for $367M. Four months later, NVIDIA announced that it would have a new addition to the Tegra family, codenamed Grey, in 2013 with an integrated Icera modem. The timing makes sense (albeit a bit aggressive) as it does take time to integrate new technology into an SoC, followed by all of the testing and validation that goes along with the integration. Between now and 2013 however there was always the chance that NVIDIA would deliver a discrete Icera based solution to a customer. Today we have the first customer that has done just that.
The ZTE Mimosa X is a Tegra 2 based Android phone running Ice Cream Sandwich (4.0.x). It features a 4.3-inch qHD (960 x 540) display, 5MP rear camera and 0.3MP front facing camera and 4GB of NAND (expandable up to 32GB). The big news with the Mimosa X is that it integrates an NVIDIA Icera 450 modem (ICE8065 baseband + ICE9225 transceiver). The 450 gives ZTE’s Mimosa X support for up to 21Mbps HSPA+ (category 14).
This is a huge milestone for NVIDIA as it marks the first apps processor + baseband design win for the company. A single datapoint isn’t enough to declare NVIDIA’s Icera acquisition a success but it’s a start. Icera’s software baseband is supposed to offer greater flexibility to device manufacturers, especially in bringing products to market with varying network requirements. Icera also promises smaller die sizes as a result of its software based architecture, which should translate into lower cost offerings (or more profit for NVIDIA). The Tegra 2 SoC guarantees that the Mimosa X will be focused squarely on the value/mainstream smartphone market.Â The Mimosa X will be shipping in Q2 of this year.
Filed under: Videos, Toys/Games
The ladies and gentlemen at Turn 10, the studio behind Forza Motorsport 4, take their cars just as seriously as their gaming. They’re not the only gamers to invest heaps of time rendering metal into pixels, but you might be surprised just how much travel, how many microphones, how long on the dyno and what kinds of owners go into gathering the selection of rides.
If you’ve wondered what goes into taking a Bugatti Veyron, or even a Honda Civic Si, from the parking lot to the game’s custom Bernese Alps track, then there’s a video just for you after the jump.