Latest Roger Narayan Stories

Researchers from North Carolina State University, Sandia National Laboratories, and the University of California, San Diego have developed new technology that uses microneedles to allow doctors to detect real-time chemical changes in the body – and to continuously do so for an extended period of time. “We’ve loaded the hollow channels within microneedles with electrochemical sensors that can be used to detect specific molecules or pH levels,” says Dr. Roger Narayan, co-author of a...

Researchers from North Carolina State University have developed extremely small microneedles that can be used to deliver medically-relevant nanoscale dyes called quantum dots into skin "“ an advance that opens the door to new techniques for diagnosing and treating a variety of medical conditions, including skin cancer."We were able to fabricate hollow, plastic microneedles using a laser-based rapid-prototyping approach," says Dr. Roger Narayan, one of the lead researchers, "and found that...

A team led by researchers from North Carolina State University has published a paper that describes the use of a technique called atomic layer deposition to incorporate "biological functionality" into complex nanomaterials, which could lead to a new generation of medical and environmental health applications. For example, the researchers show how the technology can be used to develop effective, low-cost water purification devices that could be used in developing...

Painful injections and blood draws may soon be a thing of the past. New polymerization technology may cause the sting of a needle piercing the skin to disappear. For years, biomedical engineers have made attempts to develop a way to deliver drugs intravenously without pain. Until now their closest creation has been a metal microneedle which tends to break upon impact with skin. Roger Narayan and his team of researchers at the University of North Carolina and Laser Zentrum Hanover have...