Forget Samsung and Apple. This is the future.. Discovery in synthetic biology takes us a step closer to new 'industrial revolution' Science & Tech. Shimon Schocken: The self-organizing computer course. Documentation. Andrew Blum: What is the Internet, really? Brilliant 10: Greg Nielson Shrinks Solar Cells To The Size Of Glitter. Greg Nielson pushes a small jar full of rubbing alcohol across his desk at Sandia National Laboratories in New Mexico.
In the jar float shiny solar cells the size of glitter. Pranav Mistry: The thrilling potential of SixthSense technology. Wireless power for the price of a penny? The newspaper-style printing of electronic equipment has led to a cost-effective device that could change the way we interact with everyday objects.
For a price of just one penny per unit the device, known as a rectenna, which is presented August 10, in IOP Publishing's journal Nanotechnology, can be placed onto objects such as price tags, logos and signage so that we can read product information on our smartphones with one simple swipe. This type of technology, which is known as near-field communication (NFC), has already been implemented to allow fast money transactions; however, this new device could lead the way to large-scale adoption at a low cost.
The rectenna, created by researchers from Sunchon National University and Paru Printed Electronics Research Institute, could be implemented onto everyday objects so that they can harness the power given off by the smartphone's radio waves and send information back to it via printed digital circuits. TIM Review. With mind-reading speller, free-for-all conversations that are silent and still. Researchers have come up with a device that may enable people who are completely unable to speak or move at all to nevertheless manage unscripted back-and-forth conversation.
The key to such silent and still communication is the first real-time, brain-scanning speller, according to the report published online on June 28 in Current Biology, a Cell Press publication. The new technology builds on groundbreaking earlier uses of fMRI brain scans to assess consciousness in people described as being in an unconscious, vegetative state and to enable them to answer yes and no questions. fMRI (or functional magnetic resonance imaging) is typically used for clinical and research purposes to track brain activity by measuring blood flow. The new evidence shows that the answer to that thought question is yes. Antiláser. Explain that stuff! Science and technology made simple. 'Nanocable' could be big boon for energy storage. Thanks to a little serendipity, researchers at Rice University have created a tiny coaxial cable that is about a thousand times smaller than a human hair and has higher capacitance than previously reported microcapacitors.
The nanocable, which is described this week in Nature Communications, was produced with techniques pioneered in the nascent graphene research field and could be used to build next-generation energy-storage systems. Light touch keeps a grip on delicate nanoparticles. Images.iop.org/dl/ntw/j_nano_bk_1111_highlights_2011.pdf. Nanotechweb.org homepage. Drexler dubs “grey goo” fears obsolete - nanotechweb. Eric Drexler, the “father of nanotechnology”, has revealed his latest views on molecular manufacturing.
Writing in Nanotechnology journal, Drexler explains how he now believes that self-replication - the initial source of “grey goo” fears in which nanomachines run amok and overwhelm the world - is not an essential part of the molecular manufacturing process. Nanotechweb.org’s Liz Kalaugher contacted Drexler to find out more. nanotechweb.org (NTW): What are the most important themes of your paper in Nanotechnology? Noticias - Cabras que producen seda de telaraña. Spider web's strength lies in more than its silk. While researchers have long known of the incredible strength of spider silk, the robust nature of the tiny filaments cannot alone explain how webs survive multiple tears and winds that exceed hurricane strength.
Now, a study that combines experimental observations of spider webs with complex computer simulations shows that web durability depends not only on silk strength, but on how the overall web design compensates for damage and the response of individual strands to continuously varying stresses. Reporting in the cover story of the Feb. 2, 2012, issue of Nature, researchers from the Massachusetts Institute of Technology (MIT) and the Politecnico di Torino in Italy show how spider web-design localizes strain and damage, preserving the web as a whole. T-rays technology could help develop Star Trek-style hand-held medical scanners. Scientists have developed a new way to create Terahertz waves (T-rays) that may one day lead to biomedical detective devices similar to the 'tricorder' scanner used in Star Trek Scientists have developed a new way to create electromagnetic Terahertz (THz) waves or T-rays -- the technology behind full-body security scanners.
The researchers behind the study, published recently in the journal Nature Photonics, say their new stronger and more efficient continuous wave T-rays could be used to make better medical scanning gadgets and may one day lead to innovations similar to the 'tricorder' scanner used in Star Trek. B 84, 195465 (2011): Surface plasmon driven scalable low-loss negative-index metamaterial in the visible spectrum.
Scientists create first free-standing 3-D cloak. Almost perfect: Researcher nears creation of superlens. A superlens would let you see a virus in a drop of blood and open the door to better and cheaper electronics.
It might, says Durdu Guney, make ultra-high-resolution microscopes as commonplace as cameras in our cell phones. No one has yet made a superlens, also known as a perfect lens, though people are trying. Optical lenses are limited by the nature of light, the so-called diffraction limit, so even the best won't usually let us see objects smaller than 200 nanometers across, about the size of the smallest bacterium. Scanning electron microscopes can capture objects that are much smaller, about a nanometer wide, but they are expensive, heavy, and, at the size of a large desk, not very portable. To build a superlens, you need metamaterials: artificial materials with properties not seen in nature. 'Bubblegram' imaging: Novel approach to view inner workings of viruses. Since the discovery of the microscope, scientists have tried to visualize smaller and smaller structures to provide insights into the inner workings of human cells, bacteria and viruses.
Now, researchers at the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), part of the National Institutes of Health, have developed a new way to see structures within viruses that were not clearly seen before. Their findings are reported in the Jan. 13 issue of Science. Cryo-electron microscopy (cryo-EM) is a technique that allows scientists to image very small particles, like structures on the surface of viruses. This method has been useful in helping researchers understand how vaccines work. Servomotor de modelismo. Servomotor.
Un servomotor de modelismo —conocido generalmente como servo o servo de modelismo— es un dispositivo actuador que tiene la capacidad de ubicarse en cualquier posición dentro de su rango de operación, y de mantenerse estable en dicha posición. Está formado por un motor de corriente continua, una caja reductora y un circuito de control, y su margen de funcionamiento generalmente es de menos de una vuelta completa. Los servos de modelismo se utilizan frecuentemente en sistemas de radiocontrol y en robótica, pero su uso no está limitado a estos.
How PCs Work" The word computer refers to an object that can accept some input and produce some output. In fact, the human brain itself is a sophisticated computer, and scientists are learning more about how it works with each passing year. Our most common use of the word computer, though, is to describe an electronic device containing a microprocessor. IBM Research. Cooling semiconductors by laser light. Researchers at the Niels Bohr Institute have combined two fields -- quantum physics and nano physics -- and this has led to the discovery of a new method for laser cooling semiconductor membranes. Semiconductors are vital components in solar cells, LEDs and many other electronics, and the efficient cooling of components is important for future quantum computers and ultrasensitive sensors. The new cooling method works quite paradoxically by heating the material!
Using lasers, researchers cooled membrane fluctuations to minus 269 degrees C. The results are published in the journal Nature Physics. Armada de EEUU difunde video de nueva arma tecnológica: un cañón electromagnético. La Armada de Estados Unidos difundió este martes, a través de su cuenta en YouTube, un video que muestra en acción su más novedosa arma naval: un prototipo de cañón electromagnético de última tecnología.
Según lo señalado por la institución este dispositivo, que efectuó su disparo de prueba desde el Centro Naval de Guerra de Superficie (Naval Surface Warfare Center), División Dahlgren (Virginia), fue desarrollado por la constructora aeronáutica BAE. Al respecto, se informó que tiene la capacidad de disparar proyectiles a una velocidad de 9 mil kilómetros por hora, lo que equivale a 7 veces la velocidad del sonido, y que es capaz de alcanzar objetivos a más de 160 kilómetros de distancia. En palabras de la Armada estadounidense, el prototipo “es el primero de dos lanzadores industriales, que llevarán al Departamento de la Armada un paso más cerca de producir una nueva generación de armas para naves de superficie de largo alcance”.
¿Qué opinas de esta nueva arma tecnológica? Rap music powers rhythmic action of medical sensor. The driving bass rhythm of rap music can be harnessed to power a new type of miniature medical sensor designed to be implanted in the body. Acoustic waves from music, particularly rap, were found to effectively recharge the pressure sensor.