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Researchers Grow Carbon Nanofibers Using Ambient Air, Without Toxic Ammonia

By Guest PostApril 13, 2014Scienceanatoli melechko, carbon atoms, carbon nanofibers, gould belt, herve bouy, hipparcos, joao alves, joseph tracy, north Carolina, state university

Researchers from North Carolina State University have demonstrated that vertically aligned carbon nanofibers (VACNFs) can be manufactured using ambient air, making the manufacturing process safer and less expensive. VACNFs hold promise for use in gene-delivery tools, sensors, batteries and other technologies.

Conventional techniques for creating VACNFs rely on the use of ammonia gas, which is toxic. And while ammonia gas is not expensive, it’s not free. (more…)

New Technique Controls Dimensions of Gold Nanorods while Manufacturing on a Large Scale

By Guest PostNovember 27, 2013Scienceascorbic acid, cancer treatment, dissolved in solution, gold nanorods, joseph tracy, klaudia kozek, krystian kozek, large scale, nanoscale gold rods, new technique, north Carolina, optical properties, state university, sumeet mishra, vitamin c, wavelengths, wei chen wu

North Carolina State University researchers have a developed a technique for efficiently producing nanoscale gold rods in large quantities while simultaneously controlling the dimensions of the nanorods and their optical properties. The optical properties of gold nanorods make them desirable for use in biomedical applications ranging from imaging technologies to cancer treatment.

“This technique should facilitate the economical manufacture of large volumes of gold nanorods,” says Dr. Joseph Tracy, an associate professor of materials science and engineering at NC State and senior author of a paper on the work. “And that should be good news for both the science community and the biomedical research and development community.” (more…)

Researchers Create Flexible, Nanoscale ‘Bed of Nails’ for Possible Drug Delivery

By Guest PostJanuary 27, 2013Sciencealuminum substrate, anatoli melechko, balloon, bed of nails, brain, bryan anderson, carbon nanofibers, drug delivery systems, elastic membrane, elastic silicone membrane, embedding carbon nanofibers, joseph tracy, justin railsback, liquid silicone polymer, mehmet sarac, nanofibers, nanoscale, needle like, north Carolina, ryan pearce, state university, technique, timothy mcknight

Researchers at North Carolina State University have come up with a technique to embed needle-like carbon nanofibers in an elastic membrane, creating a flexible “bed of nails” on the nanoscale that opens the door to development of new drug-delivery systems.

The research community is interested in finding new ways to deliver precise doses of drugs to specific targets, such as regions of the brain. One idea is to create balloons embedded with nanoscale spikes that are coated with the relevant drug. Theoretically, the deflated balloon could be inserted into the target area and then inflated, allowing the spikes on the balloon’s surface to pierce the surrounding cell walls and deliver the drug. The balloon could then be deflated and withdrawn. (more…)

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Researchers Grow Carbon Nanofibers Using Ambient Air, Without Toxic Ammonia

New Technique Controls Dimensions of Gold Nanorods while Manufacturing on a Large Scale

Researchers Create Flexible, Nanoscale ‘Bed of Nails’ for Possible Drug Delivery