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Avec cette écharpe il devient impossible de vous photographier ! Vous êtes traqué par les paparazzis, ou bien vous en avez marre d'être espionné par des caméras de surveillance ? Devenez invisible ! Ce foulard "magique" vous permet de disparaître littéralement sur les photos et vidéos. A 28 ans, Saif Siddiqui est le concepteur de ce tissu révolutionnaire ! Le foulard Ishu permet de vous rendre invisible sur les photos et les vidéosurveillances lorsque celles-ci utilisent un flash, afin de mieux protéger votre vie privée (si tant est que vous soyez poursuivi par des paparazzis en permanence). Ce foulard est fabriqué à partir d'un tissu spécial, contenant des milliers de cristaux nano-sphériques, qui réfléchissent la lumière des flash d'appareils photo ou des caméras à l'extrême. Pour le moment, cette innovation fait un carton à Hollywood, auprès des stars de cinémas ou encore de joueurs de football, désireux de préserver leur vie privée.

Vous nous aimez déjà ? These Tiny Nanobots Can Automatically Sense And Repair Broken Electronic Circuits Too Small For Us To See. The next big revolution in science may come from the world of the very small. Nanotechnology promises to continue to change the way we manipulate the world around us, from using graphene to create atomically-thin night vision contact lenses to coopting algae to transport chemotherapy drugs to specific parts of the body. A new study published in the journal Nano Letters may represent that next big leap in the nanoscale world: Researchers have revealed how they have created incredibly small robots that automatically heal fractures and cracks. They showcased their new nanoscopic critters fixing broken electronic circuits, but they could also be adapted to repair tears in biological systems – including our own.

“Such a nanomotor-based repair system represents an important step toward the realization of biomimetic nanosystems that can autonomously sense and respond to environmental changes,” the authors write. Nanobots aren’t actually a new invention. Photo Gallery. Scientists Develop "Thirsty" Nanopore Water Filtration Device. Water is the most important substance to humans, by far. Some nations have better access to it than others; those surrounded by the sea in drier climates often use desalinization plants that remove the salt from the water, but this is often slow and energy-intensive.

Fortunately, a team of U.S. engineers has come up with a new technique to purify water using “thirsty” filtration devices peppered with “nanopores” which is remarkably energy efficient. Their findings have been reported in the journal Nature Communications. Nanotechnology is a rapidly developing field, particularly with regards to graphene, the wonder material that can be used to create a multitude of things, from enhanced night vision contact lenses to and filtration devices for water. Sheets of graphene just one atom thick, riddled with small nano-sized holes, allow the water molecules through the barrier while trapping the larger salt molecules on the other side, filtering the water efficiently and using little energy.

Welcome | cadnano. Researchers Create First Single-Molecule Diode. Imagine a single molecule that could act as an electrical diode, holding the power to control the direction of current flowing within a circuit. If scientists are successful in forging such a molecule, it could spell the beginning of a new era of tiny technology. This idea was first suggested 40 years ago, and there have been some prototypes in the past. But now, scientists from the University of Columbia have created a diode that blows all previous attempts out the water. It can transform current from alternating current (AC) to direct current (DC) at a rate 50 times higher than previous designs. "Our new approach created a single-molecule diode that has a high (>250) rectification and a high 'on' current (~ 0.1 micro Amps)," says Latha Venkataraman, associate professor of applied physics at the University of Columbia.

So how did the team create an asymmetric molecule that is better than any of the previous designs? [Via University of Columbia, Nature Nanotechnology] Self-Propelled Micro-Motors Tested In A Living Animal For The First Time. For the first time, tiny artificial motors have voyaged through the body of a living animal, successfully delivering a cargo of nanoparticles directly into the stomach wall.

Although it will still be many years before we see microscopic machines scurrying around our own bodies and carrying out various medical tasks, the brains behind the current study see this as a significant step towards this ultimate goal. There has been a lot of interest in the development of micromachines for medicine in recent years as their wide range of potential uses has become apparent.

Scientists envisage that one day, tiny synthetic robots could be used to deliver drugs to specific areas of the body to treat various medical conditions, repair damaged tissues such as blood vessels, or even manipulate individual cells. To find out whether this could indeed be the case, the researchers tested out their micromotors on whole organisms for the first time. [Via BBC News, New Scientist and ACS Nano]

MIT: Synthetic DNA Can Be Used as Ink for Nanoscale 3D Printers. This enables medical applications and nanomaterials MIT discovers how to use DNA as a printing material 4 photosVIEW ALL Not that long ago we wrote about microscopic robots which could be 3D printed (despite the small scale) and deliver drugs directly to affected areas. Now we can say that researchers from the MIT are looking well beyond that stage. You may or may not know that, back in May 2014, a replicable synthetic form of DNA was created, which wasn't found in nature but had all the traits of normal DNA.

This opened new doors in fields like diagnostics, the creation of medicines and vaccines, even the development and production of nanomaterials. DNA can be programmed by changing the sequence, and its stable structure allows scientists to build nanoscale structures based on need. At least this was the idea. MIT researchers turn synthetic DNA into ink for nanoscale 3D printed structures The purpose of the 3D printed DNA nanostructures. New cancer-hunting ‘nano-robots’ to seek and destroy tumours.

It sounds like a scene from a science fiction novel – an army of tiny weaponised robots travelling around a human body, hunting down malignant tumours and destroying them from within. But research in Nature Communications today from the University of California Davis Cancer Centre shows the prospect of that being a realistic scenario may not be far off. Promising progress is being made in the development of a multi-purpose anti-tumour nanoparticle called “nanoporphyrin” that can help diagnose and treat cancers. Cancer is the world’s biggest killer. In 2012, an estimated 14.1 million new cancer cases were diagnosed and around 8.2 million people died from cancer worldwide.

This year, cancer surpassed cardiovascular diseases to become the leading cause of death in Australia; 40,000 Australians died as a result of cancer last year. It’s no wonder that scientists explore every possible technology to efficiently and safely diagnose and treat the disease. Nanotech: a big deal. DARPA’s New Initiative Aims to Make Nanoscale Machines a Reality. For much of history, builders and makers fixated on the monumental—pyramids, cathedrals, skyscrapers, aircraft carriers.

Increasingly, however, the cutting edge focus is smaller. Much smaller. The field of nanotechnology aims to build components or even entire machines so small they approach the atomic. Tiny machines may cruise our bodies selectively releasing drugs, repairing cells, or hunting pathogens. Nanotechnology may yield materials with amazing new properties. Though nanotechnology is advancing, there is not yet a consistent, economical method of assembly. In addition to learning to better build nanoscale components and machines, DARPA is interested in making materials that exhibit useful nanoscale properties on human scales.

Main notes that such assembly naturally occurs in plants and animals, each of which is made up of cells and proteins a million or a billion times smaller than the organism itself. Will the agency’s latest nanotechnology efforts yield a breakthrough? New Super Black Material Absorbs 99.965% Of Light. Goths of the world, rejoice. Scientists have produced Vantablack, a product so dark it becomes impossible to make out shapes formed from it. Surrey Nanosystems, a British nanoelectronics company have used carbon nanotubes 10,000 times thinner than a human hair to absorb 99.965% of visible light, a world record. The tubes are so small photons cannot get inside, but can fit into the small spaces between the tubes, where they are captured.

For comparison, fresh asphalt reflects 4% of the light that falls on it, and after a while this rises to 12%, while coal seldom gets below 0.5%. "You expect to see the hills and all you can see … it's like black, like a hole, like there's nothing there. The manufacturers grow Vantablack (Vertically Aligned carbon NanoTube Array) on aluminum foil, making it easy to create complex topography that is entirely invisible to the eye.

The properties of Vantablack have been described in Optics Express. Researchers Reveal Smallest, Fastest Nanomotor Yet. Nanotechnology in medicine promises targeted drug delivery while not harming healthy cells. There are a variety of approaches to accomplishing this goal, one of which is a nanomotor. Nanomotors are devices that use energy to move, as opposed to nanoparticles, which typically rely on biochemical signaling. A team of researchers led by Emma Fan from the University of Texas have developed the smallest, fastest, and longest lasting nanomotor to date. The details of the device have been published in Nature Communications. Previously, nanomotors have rotated at about 14-500 RPMs for a maximum of a few minutes. During experimentation, biochemicals were coated onto the nanomotor to simulate drug delivery.

“We were able to establish and control the molecule release rate by mechanical rotation, which means our nanomotor is the first of its kind for controlling the release of drugs from the surface of nanoparticles,” Fan said in a press release. Regenerating Plastic Oozes Clot-Like Goo. Plastics capable of regeneration have been announced in Science.

Although plastics capable of filling microscopic holes already exist, the new product restores holes a hundred times the size that has been achieved previously.. As demonstrated in this video holes the size of bullets, because the are caused by bullets, can be filled in as though they were never there. "We have demonstrated repair of a nonliving, synthetic materials system in a way that is reminiscent of repair-by-regrowth as seen in some living systems," said Professor Jeffrey Moore of the University of Illinois. The team report filling a 35mm hole in 20 minutes, with mechanical function restored in 3 hours, although the have restricted their claims of reliable performance to 9mm. The plastic is the latest step in a series of advances from the same university.

In 2011 they announced a synthetic vascular system modeled on that in animals and plants. Stop motion videos of the healing process can be seen here and here. Scientists Make Headway Toward Invisibility Cloaking. The world of science fiction is rife with examples of invisibility - whether it is Harry Potter’s cloak, Romulan cloaks integrated into a spaceship’s shields, or the One Ring that helped our favorite hobbits steer clear of orcs. Of course, actually creating a device that is capable of bending light so an object appears to be invisible to the eye is a fairly tall order. However, a group of materials scientists led by Debashis Chandra at the University of Central Florida have made significant strides forward to making this long-fabled device a reality.

By using nanotransfer printing, the team achieved optical properties across a large swath of material that have never been accomplished on such a large scale before, breaking barriers toward the development of a cloak that could make an object appear to be invisible. The results were detailed as a cover story in the journal Advanced Optical Materials. The team was able to a 3D metamaterial from nanotransfer printing. Spray-On Nanofibres Bind Surgical Wounds. Polymer nanofibres can be sprayed onto surgical incisions, sealing them to prevent infection.

The process may be used in addition to sutures, but may also remove the need for them in some cases. The potential of mats of polymer nanofibers has been recognized for some time. They can seal up wounds, biodegrade so they don't need to be removed, and be impregnated with slow release drugs. Nanofiber mats also have potential as scaffolds on which to grow tissue from stem cells. The hitch, however, has been how to produce the mats in or on the human body without doing damage in the process. Mats can be made through electrospinning where fine fibers are drawn from a liquid with an electric field, but t​he University of Maryland's Professor Peter Kofinas notes this “requires specialized equipment, high voltages and electrically conductive targets”. To idea itself is not new. A technique using a related concept, aerosol delivery of skin cells to burn victims, is under clinical trial.