QuantumTunneling
Latest
Researchers claim 'almost instantaneous' quantum computing breakthrough
Silicon is great, but we're tickling the edges of its speed limit. As a result, researchers at Oregon State University have been plugging away at a low-cost, faster alternative for the past three years: tiny quantum devices called metal-insulator-metal diodes, or MIM diodes for short. Silicon chips involve electrons traveling through a transistor, but MIM diodes send electrons "tunneling" through the insulator in a quantum manner, such that they appear "almost instantaneously" on the other side. The tech's latest development doubles the insulator fun -- transforming the MIM into a MIIM (pictured above) -- giving the scientists another method for engineering quantum mechanical tunneling. With MIIMs, super fast transistor-less computers could be around the corner. The Oregon researchers aren't bold enough to put a date on making any of this happen outside of the lab, but they promise entire new industries may "ultimately emerge" from their work, and we're far too under-qualified to doubt them.
New quantum tunneling transistors to make PCs less power-hungry
Yes, that awesome new 8-core chip in your PC is the fastest thing on the block, but it's got your utility meter spinning accordingly. Fortunately, researchers from Penn State have come up with a new high performance transistor that may turn future chips from power hogs into current-sipping silicon. The group, in cooperation with semiconductor manufacturer IQE, has created a high-performance transistor capable of significantly reducing power demand whether it's idle or switching. Doctoral candidate Dheeraj Mohata's the one who made it happen by inventing an alternative to traditional MOSFET (metal-oxide semiconductor field-effect transistors) technology capable of turning on and off using far less power. Mohata's method uses a tunneling field effect transistor crafted from dissimilar semiconductor materials to provide instant on-off capability at 300 millivolts -- compared to MOSFET's one volt requirement -- to provide a power savings of 70 percent. You can dig deeper into the technical transistor details at the source, but all you really need to know is that the ladies love a PC with paltry power consumption.
Pressure-sensitive touchscreens show up on the not too distant horizon
Ever heard of quantum tunneling? It's the basis for the latest approach to gather steam in the never-ending quest to endue touchscreens with force recognition, and its promises are as lofty as you'd expect. Developed by UK researchers Peratech, this new methodology revolves around a 75-micrometer (less than a tenth of a millimeter) quantum tunneling composite, which display makers can add to their screens relatively cheaply and painlessly. The pressure-sensing layer consumes no power when it isn't depressed and requires a miniscule two micrometers of movement to register a touch. Japanese display maker Nissha (who counts LG and Nintendo among its customers) has grabbed a license and we're even hearing devices could be coming out as soon as April. Check the Peratech site for more info.
Quantum PI's nanoTrek sensors pick up vibration and motion your Wiimote could never dream of
Quantum PI has just built the first motion sensor chip to use "quantum tunneling," which sounds theoretically unsafe, but we'll follow along. The nanoTrek sensors are classified as NEMS (Nano Electric Mechanical Systems) as opposed to the "bulky" MEMS sensors that can be found everywhere from the Wii to the iPhone. nanoTrek's sensing area is a mere 50 x 50 microns, and its sensitivity is 5 to 10 times greater than MEMS chips. There are all sorts of boring industrial applications to such a sensor, but we're looking forward to the not-too-distant-future when we can be completely disappointed by a brand new version of Super Monkey Ball.[Via The Inquirer]
