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Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News



Phys.org provides the latest news on nanotechnology, nanoscience, nanoelectronics, science and technology. Updated Daily.



 



Gold nanostars and immunotherapy vaccinate mice against cancer

Thu, 17 Aug 2017 15:32:54 EDT

By combining an FDA-approved cancer immunotherapy with an emerging tumor-roasting nanotechnology, Duke University researchers improved the efficacy of both therapies in a proof-of-concept study using mice.



Going nano in the fight against cancer

Thu, 17 Aug 2017 06:50:11 EDT

Imagine being able to see the signs of cancer decades before we can now. URI Chemical Engineering Assistant Professor Daniel Roxbury and researchers from Memorial Sloan Kettering Cancer Center have invented a technique that could detect a wide range of biomarkers that signal the start of cancer—many years before symptoms surface.



Fizzy soda water could be key to clean manufacture of flat wonder material: graphene

Thu, 17 Aug 2017 03:12:49 EDT

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials—graphene.



Boron nitride foam soaks up carbon dioxide

Wed, 16 Aug 2017 14:20:20 EDT

Rice University materials scientists have created a light foam from two-dimensional sheets of hexagonal-boron nitride (h-BN) that absorbs carbon dioxide.



Gold shines through properties of nano biosensors

Wed, 16 Aug 2017 11:40:01 EDT

With their remarkable electrical and optical properties, along with biocompatibility, photostability and chemical stability, gold nanoclusters are gaining a foothold in a number of research areas, particularly in biosensing and biolabeling.



Multicolor MRIs could aid disease detection

Wed, 16 Aug 2017 11:11:21 EDT

Researchers at Case Western Reserve University School of Medicine have developed a method that could make magnetic resonance imaging—MRI—multicolor. Current MRI techniques rely on a single contrast agent injected into a patient's veins to vivify images. The new method uses two at once, which could allow doctors to map multiple characteristics of a patient's internal organs in a single MRI. The strategy could serve as a research tool and even aid disease diagnosis.



Turning pollen into a low-cost fertilizer

Wed, 16 Aug 2017 10:18:54 EDT

As the world population continues to balloon, agricultural experts puzzle over how farms will produce enough food to keep up with demand. One tactic involves boosting crop yields. Toward that end, scientists have developed a method to make a low-cost, biocompatible fertilizer with carbon dots derived from rapeseed pollen. The study, appearing in ACS Omega, found that applying the carbon dots to hydroponically cultivated lettuce promoted its growth by 50 percent. 



Drug-delivering micromotors treat their first bacterial infection in the stomach

Wed, 16 Aug 2017 05:00:04 EDT

Nanoengineers at the University of California San Diego have demonstrated for the first time using micromotors to treat a bacterial infection in the stomach. These tiny vehicles, each about half the width of a human hair, swim rapidly throughout the stomach while neutralizing gastric acid and then release their cargo of antibiotics at the desired pH. Researchers published their findings on Aug. 16 in Nature Communications.



Nanotechnology gives green energy a green color

Tue, 15 Aug 2017 11:00:08 EDT

Solar panels have tremendous potential to provide affordable renewable energy, but many people see traditional black and blue panels as an eyesore. Architects, homeowners and city planners may be more open to the technology if they could install green panels that melt into the landscape, red panels on rooftops and white ones camouflaged as walls.



Reactions in tiny containers—towards the world's smallest coaxial cable

Tue, 15 Aug 2017 09:32:56 EDT

As electronic devices continue to shrink to meet the demand for pocket sized and wearable technology, scientists are working to develop the minute components that make them work and a team at the University of Nottingham have developed a new approach for the preparation of a coaxial cable around 50,000 times narrower than the width of a human hair.



Killing bacteria by hacking plastics with silver and electricity

Tue, 15 Aug 2017 07:20:02 EDT

Researchers at the Swedish Medical Nanoscience Center at Karolinska Institutet have developed an innovative way of hacking conducting plastics so as to prevent bacterial growth using silver nanoparticles and a small electrical current. The method, which could prove to be useful in preventing bacterial infections in hospitals, is presented in the scientific journal Advanced Healthcare Materials.



Researchers use polystyrene to make next-generation of solar panels even cheaper

Tue, 15 Aug 2017 06:58:06 EDT

Researchers from The University of Manchester are using polystyrene particles rather than expensive polymers to make the next generation of solar cells, which are used to make solar panels, more stable and even cheaper.



A graphene and boron nitride heterostructure creates large spin signals

Tue, 15 Aug 2017 06:16:11 EDT

Graphene Flagship scientists based at the University of Groningen, The Netherlands, have created a device based on a blilayer of graphene and boron nitride which shows unprecedented spin transport efficiency at room temperature. Highlighting the potential of creating devices containing graphene and related materials, the spin signal measured here is so large that it can be used in real-life applications such as spin based logic and transistors.



Protein to stop acute cerebral hemorrhage

Tue, 15 Aug 2017 06:15:21 EDT

A research team led by Won Bae Jeon at DGIST's Companion Diagnostics and Medical Technology Research Group conducted a joint study with the research team of Professor Jong Eun Lee at Yonsei University's College of Medicine and found a thermally responsive elastin-like polypeptide, a protein that controls acute intracerebral hemorrhage and accelerates nerve regeneration. Thermal-responsive elastin-like polypeptides (ELPs) are cell-attaching proteins that are soluble in water at room temperature, but are transformed to insoluble gel at body temperature.



Nanomaterials help spiders spin the toughest stuff

Mon, 14 Aug 2017 19:00:02 EDT

Spiders' silk is already tough stuff—just ask your friendly neighbourhood Spiderman.



2-faced 2-D material is a first at Rice

Mon, 14 Aug 2017 11:33:40 EDT

Like a sandwich with wheat on the bottom and rye on the top, Rice University scientists have cooked up a tasty new twist on two-dimensional materials.



Single molecules can work as reproducible transistors—at room temperature

Mon, 14 Aug 2017 11:00:05 EDT

A major goal in the field of molecular electronics, which aims to use single molecules as electronic components, is to make a device where a quantized, controllable flow of charge can be achieved at room temperature. A first step in this field is for researchers to demonstrate that single molecules can function as reproducible circuit elements such as transistors or diodes that can easily operate at room temperature.



New ultrathin semiconductor materials exceed some of silicon's 'secret' powers

Fri, 11 Aug 2017 14:00:04 EDT

The next generation of feature-filled and energy-efficient electronics will require computer chips just a few atoms thick. For all its positive attributes, trusty silicon can't take us to these ultrathin extremes.



Flexible batteries power the future of wearable technology

Fri, 11 Aug 2017 07:00:01 EDT

The rapid development of wearable technology has received another boost from a new development using graphene for printed electronic devices.



Moving objects at the nanoscale using thermal regions

Fri, 11 Aug 2017 06:46:12 EDT

Researchers report that it is possible to move a nanoparticle on the surface of a graphene sheet by applying a temperature difference at the ends of the membrane—a nanocluster on the surface will drift from the hot region to the cold one. In addition, contrary to the macroscale physical laws, the force acting on the particle—the so-called thermophoretic force—should not decrease as the sheet length rises, instead sporting a so-called ballistic behavior, as a bullet in a gun barrel. In fact, simulations show that vertical thermal oscillations of the graphene membrane flow ballistically from hot to cold, providing a push to the object.



Harnessingthe properties of a remarkable 2-D material

Thu, 10 Aug 2017 09:17:58 EDT

Characterizing the thermal properties of crystalline molybdenum disulfide, an important two-dimensional (2-D) material, has proven challenging. Now researchers from A*STAR have developed a simple technique that could pave the way for its use in a wide range of new applications in energy storage, optoelectronic and flexible electronic devices.



Super-light graphene and ceramic metamaterial possesses high strength, other attributes

Thu, 10 Aug 2017 08:35:13 EDT

A new featherweight, flame-resistant and super-elastic "metamaterial" has been shown to combine high strength with electrical conductivity and thermal insulation, suggesting potential applications from buildings to aerospace.



Scientists show growing atom-thin sheets on cones allows control of defects

Wed, 09 Aug 2017 15:37:45 EDT

Rice University researchers have learned to manipulate two-dimensional materials to design in defects that enhance the materials' properties.



Assembling nanomachines in bacteria

Wed, 09 Aug 2017 07:12:26 EDT

Osaka University researchers use X-ray crystallography and electron microscopy to resolve the assembly of the export gate apparatus in Salmonella. The new details of this nanomachine are expected to clarify how bacteria infect eukaryotic cells and present new molecular targets for drug discovery.



Scientists creating an atomic 'Lego set' of 2-D wonder materials

Wed, 09 Aug 2017 07:10:48 EDT

The strongest material known to mankind was first discovered with sticky tape. Today, this two-dimensional (2-D) version of carbon known as graphene is the subject of intense research around the world. Many hope its unique properties could lead to breakthroughs in fields from electronics to medicine.



Scientists investigating properties of hybrid systems consisting of carbon nanostructures and a dye

Tue, 08 Aug 2017 09:23:26 EDT

Researchers around the world are looking at how they can manipulate the properties of carbon nanostructures to customise them for specific purposes; the idea is to make the promising mini-format materials commercially viable. A team at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) has now managed to selectively influence the properties of hybrid systems consisting of carbon nanostructures and a dye.



New solid lubricant shown to reduce friction and wear on steel surfaces

Tue, 08 Aug 2017 06:07:30 EDT

Researchers have created a new type of non-liquid lubricant that has been shown to reduce friction and wear significantly under the extreme conditions found in various applications, from air compressors to missile systems.



MRI contrast agents accumulate in the brain

Mon, 07 Aug 2017 12:30:02 EDT

The International Society for Magnetic Resonance in Medicine (ISMRM) has provided new guidance in the use of contrast agents during MRI scans. Emerging research suggests gadolinium-based contrast agents, injected in a patient's veins to brighten tissues in MRI images, accumulate in the brain. More than 300 million doses of such drugs have been administered since their introduction in 1987.



Graphene electronic tattoos can be applied to the skin with water

Mon, 07 Aug 2017 06:00:03 EDT

Researchers have designed a graphene-based tattoo that can be directly laminated onto the skin with water, similar to a temporary tattoo. But instead of featuring artistic or colorful designs, the new tattoo is nearly transparent. Its main attraction is that graphene's unique electronic properties enable the tattoo to function as a wearable electronic device, with potential applications including biometric uses (such as measuring the electrical activity of the heart, brain, and muscles), as well as human-machine interactions.



Nanoparticles trick body into accepting organ transplants

Fri, 04 Aug 2017 09:00:03 EDT

Using nanoparticles, Yale researchers have developed a drug-delivery system that could reduce organ transplant complications by hiding the donated tissue from the recipient's immune system.