Principles and mechanisms of nanotechnology will be examined by Mohamed K. Khan, MD, PhD, NanoBiotechnology Center, Roswell Park Cancer Institute (RPCI) during the 48th annual meeting of the American Society for Therapeutic Radiology and Oncology (ASTRO), November 5-9 in Philadelphia, PA.
Many of the vaunted applications of carbon nanotubes require the ability to attach these super-tiny cylinders to electrically conductive surfaces, but to date researchers have only been successful in creating high-resistance interfaces between nanotubes and substrates. Now a team from RPI reports two new techniques, each following a different approach, for placing carbon nanotube patterns on metal surfaces of just about any shape and size.
Laboratory testing of a novel, permanent nano-coating, developed in collaboration by researchers at North Carolina State University College of Textiles and Emory University School of Medicine, has been shown to kill or inactivate most viruses and bacteria when exposed to visible light. Early tests have shown that the coating kills 99.9 percent of influenza viruses and 99.99 percent of vaccinia virus.
Engineers with UB's Energy Systems Institute, one of the nation's few academic research centers that studies the fundamentals of electric power, have for the past year been considering how nanoelectronics could dramatically shorten, or in some cases eliminate, crippling power outages.
It is so small, you can barely see it, but a microsensor created by University of Alberta engineers may soon make a huge difference in the lives of people recovering from hip replacement surgery. The U of A research team has invented a self-powered wireless microsensor for monitoring the bone healing process after surgery"”it is so tiny it can fit onto the tip of a pen.
A nanotechnology-oriented forum bringing together academia, industry and budding entrepreneurs, will be held April 2-4, 2007, at Oak Ridge National Laboratory. Nano Nexus 2007 is designed to foster innovation and increase collaboration between universities, government, industry and the investment community "” all critical players for commercializing new nanotechnology.
Two University of Delaware researchers have discovered a means to detect and identify damage within advanced composite materials by using a network of tiny carbon nanotubes, which act in much the same manner as human nerves.
Research at the University at Buffalo is launching a new generation of medical imaging with nanoparticle-based multi-probe systems in which two or more medical imaging techniques are combined to provide complementary information.
Some Eureka moments are more drawn out than others. For Pratik Mankidy, a Ph.D. student in the Department of Chemical Engineering at Penn State, the timeframe from "aha" to understanding took the better part of a year.
University of Arkansas researchers have examined the mechanisms underlying the synthesis of three-dimensional nanocrystals in solution and have created a systematic method for the directed synthesis of such nanocrystals.
Researchers have devised a way to use a brief burst of electricity to release biomolecules and nanoparticles from a tiny gold launch pad. The technique could be used to dispense small amounts of medicine on command from a chip implanted in the body.
Using nanometer scale analysis techniques and quantities too small to explode, researchers have mapped the temperature and length-sale factors that make energetic materials "“ otherwise known as explosives "“ behave the way they do.
Using an off-the-shelf inkjet printer, a team of scientists has developed a simple technique for printing patterns of carbon nanotubes on paper and plastic surfaces. The method, which is described in the August 2006 issue of the journal Small, could lead to a new process for manufacturing a wide range of nanotube-based devices, from flexible electronics and conducting fabrics to sensors for detecting chemical agents.
Researchers at Purdue University have made a discovery about the behavior of tiny structures called nanocantilevers that could be crucial in designing a new class of ultra-small sensors for detecting viruses, bacteria and other pathogens.
University of Arkansas researchers have created assemblies of nanowires that show potential in applications such as armor, flame-retardant fabric, bacteria filters, oil cracking, controlled drug release, decomposition of pollutants and chemical warfare agents.
Researchers at the Georgia Institute of Technology have made a discovery that could allow scientists to exercise more control over the catalytic activity of gold nanoclusters, an important development in the rapidly developing field of nanotechnology.
Georgia Tech researchers have found a way to shrink all the sensing power of sophisticated biosensors "” such as sensors that can detect trace amounts of a chemical in a water supply or a substance in your blood "” onto a single microchip.
When Hongrui Jiang looked into a fly's eye, he saw a way to make a tiny lens so "smart" that it can adapt its focal length from minus infinity to plus infinity-without external control. Incorporating hydrogels that respond to physical, chemical or biological stimuli and actuate lens function, these liquid microlenses could advance lab-on-a-chip technologies, optical imaging, medical diagnostics and bio-optical microfluidic systems.
Engineers at Purdue University have developed a technique to grow individual carbon nanotubes vertically on top of a silicon wafer, a step toward making advanced electronics, wireless devices and sensors using nanotubes by stacking circuits and components in layers.
In laboratory tests, one very low dose of a drug was enough to show an effect on notoriously tenacious artery-clogging plaques. What kind of drug is that potent? It's not so much the drug itself as how it was delivered.
Georgia Tech researchers have created a nanoscale probe that can capture both the biochemical makeup and topography of complex biological objects in their normal environment "” leading to better disease diagnosis and drug design on the cellular level.
Cornell University researchers have come up with nanoscale resonators -- tiny vibrating strings -- with the highest quality factor so far obtainable at room temperature for devices so small. (Journal of Applied Physics, June 15, 2006).
Researchers have created a broadband light amplifier on a silicon chip, a major breakthrough in the quest to create photonic microchips. In such microchips, beams of light traveling through microscopic waveguides will replace electric currents traveling through microscopic wires.
Researchers at Purdue University are using a rare type of electron microscope to see how structures like carbon nanotubes form at the atomic level, information that will be crucial for nanotechnology to find practical applications in computing, electronics and other areas.
Researchers at the University of Arkansas have found a way to create switching in nanoscale materials, opening the path to using these new properties for memory devices, nanomotors, nanoswitches or nanosensors.
Winston Patrick Kuo, DDS, MS, DMSc, post-doctoral researcher in the Department of Oral and Developmental Biology at the Harvard School of Dental Medicine, and colleagues tested nearly all the available commercial and "in-house" gene expression microarray platforms for cross-platform and cross-laboratory comparisons.
Researchers have created organic gel nanomaterials that could be used to encapsulate pharmaceutical, food, and cosmetic products and to build 3-D biological scaffolds for tissue engineering. Using olive oil and six other liquid solvents, the scientists added a simple enzyme to chemically activate a sugar that changed the liquids to organic gels.
Researchers at the University of California, San Diego have developed what they call a "Smart Petri Dish" that could be used to rapidly screen new drugs for toxic interactions or identify cells in the early stages of cancer circulating through a patient's blood.
Nanotechnology simulations show what experiments miss...Taking issue with the perception that computer models lack realism, Sandia National Laboratories researcher Eliot Fang told members of the Materials Research Society that simulations of the nanoscale provide researchers more detailed results - not less - than experiments alone.
Bombarding a carbon nanotube with electrons causes it to collapse with such incredible force that it can squeeze out even the hardest of materials, much like a tube of toothpaste, according to an international team of scientists. The researchers suggest that carbon nanotubes can act as minuscule metalworking tools, offering the ability to process materials as in a nanoscale jig or extruder.
University of Maryland chemistry professor John Fourkas and his group have developed a new technique that promises to make the mass production of complex plastic microstructures a routine, one-step process.
A team of researchers has achieved a long-sought scientific goal: using laser light to break specific molecular bonds. The process uses laser light, instead of heat, to strip hydrogen atoms from silicon surfaces. This is a key step in the manufacture of computer chips and solar cells, so the method could reduce their cost and improve their quality.
Imagine having computer memory so dense that a cubic centimeter contains 12.8 million gigabytes (GB) of information. Imagine an iPodTM playing music for 100 millennia without repeating a single song or a USB thumb-drive with room for 32.6 million full-length DVD movies.
Now all they need is a really, really small corkscrew. Like Lilliputian chemists, scientists have found a way to "cork" infinitesimally small nano test tubes. The goal is a better way to deliver drugs, for example, for cancer treatment. Scientists want to fill the teeny tubes with drugs and inject them into the body, where they will seek diseased or cancerous cells, uncork and spill their therapeutic contents in the right place.
Texas scientists have added one more trick to the amazing repertoire of carbon nanotubes "” the ability to carry electrical signals to nerve cells.
Engineers have created carpets made of tiny cylinders called carbon nanotubes to enhance the flow of heat at a critical point where computer chips connect to cooling devices called heat sinks, promising to help keep future chips from overheating.
Nanotechnology may one day help physicians detect the very earliest stages of serious diseases like cancer, a new study suggests. It would do so by improving the quality of images produced by one of the most common diagnostic tools used in doctors' offices "“ the ultrasound machine.
Using experimental data and simulations, researchers have identified key parameters that predict the outcome of nanoimprint lithography, a fabrication technique that offers an alternative to traditional lithography in patterning integrated circuits and other small-scale structures into polymers.
Researchers at the Georgia Institute of Technology have crafted tiny nanowires that generate electricity when they vibrate. Just like the quartz crystal in a watch, the zinc-oxide nanowires are piezoelectric, which means bending causes them to produce an electrical charge.
The emerging discipline of nanotechnology holds the promise of improving functional foods and the capability of delivering healthful food compounds to the body where it can utilize them best, according to the latest issue of Food Technology.
Researchers have developed "custom" nanoparticles that show promise of providing a more targeted and effective delivery of anticancer drugs than conventional medications or any of the earlier attempts to fight cancer with nanoparticles. The nanoparticles also have the potential to reduce side effects associated with chemotherapy.
Researchers at the Georgia Institute of Technology have found that by using gold nanorods, rather than nanospheres, they can detect malignant tumors hidden deeper under the skin and destroy them with lasers only half as powerful as before "“ without harming the healthy cells.
Researchers have developed a new process to make flexible, conducting "nano skins" for a variety of applications, from electronic paper to sensors for detecting chemical and biological agents. The materials combine the strength and conductivity of carbon nanotubes with the flexibility of traditional polymers.
Northeastern University Assistant Professor Yung Joon Jung is the lead author of a research paper on the development of "nano skins" that appears in the March issue of The American Chemical Society journal Nano Letters.
University at Buffalo engineers are working to solve two significant roadblocks -- electromigration and thermomigration -- impeding the creation of smaller, faster and more powerful electronic devices.
A neurosurgeon at the Methodist Neurological Institute (NI) found a new way to label nanotubes using quantum dots, a discovery that could give researchers a new view into cancer cells, proteins, and DNA molecules.
The tumblers of life continue to click as Cornell University researchers have fabricated a set of 'nano-keys' on the molecular scale to interact with receptors on cell membranes and trigger larger-scale responses within cells -- such as the release of histamines in an allergic response.
A team of researchers, led by University Maryland chemistry professor John T. Fourkas, has developed a technique for creating microscopic structures from multiple materials, including metal, paving the way for the creation of entirely new types of micromachines.
A team of UW-Madison engineers has shown that when the surface of nanoscale silicon is specially cleaned, the surface itself facilitates current flow in thin layers that ordinarily won't conduct "” a potentially significant development for nanotechnology application.
A new study suggests that integrating nanotubes into traditional materials dramatically improves their ability to reduce vibration, especially at high temperatures. The findings could pave the way for a new class of materials with a multitude of applications.
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