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Study Finds Natural Compound Can Be Used for 3-D Printing of Medical Implants

By Guest PostNovember 3, 2013Science3d printing, 3d printing technology, alexander nguyen, anastasia koroleva, biocompatible, chapel hill, laser zentrum hannover, medical implants, natural compound, non toxic polymers, nontoxic, north Carolina, photoreactive liquid precursors, riboflavin, roger narayan, shaun gittard, solid polymer, state university, three-dimensional, university, vitamin b2

Researchers from North Carolina State University, the University of North Carolina at Chapel Hill and Laser Zentrum Hannover have discovered that a naturally-occurring compound can be incorporated into three-dimensional (3-D) printing processes to create medical implants out of non-toxic polymers. The compound is riboflavin, which is better known as vitamin B2.

“This opens the door to a much wider range of biocompatible implant materials, which can be used to develop customized implant designs using 3-D printing technology,” says Dr. Roger Narayan, senior author of a paper describing the work and a professor in the joint biomedical engineering department at NC State and UNC-Chapel Hill. (more…)

New Technique Controls Crystalline Structure of Titanium Dioxide

By Guest PostJuly 14, 2012Scienceanatase, antimicrobial coatings, atoms dictates, crystalline structure, dme, domain matching epitaxy, hydrogen production, jay narayan, m r bayati, north carolina state university, optimal structure, photovoltaic cells, r molaei, roger narayan, rutile, sapphire substrate, smart sensor, titanium dioxide

Researchers from North Carolina State University have developed a new technique for controlling the crystalline structure of titanium dioxide at room temperature. The development should make titanium dioxide more efficient in a range of applications, including photovoltaic cells, hydrogen production, antimicrobial coatings, smart sensors and optical communication technologies.

Titanium dioxide most commonly comes in one on of two major “phases,” meaning that its atoms arrange themselves in one of two crystalline structures. These phases are “anatase” or “rutile.” The arrangement of atoms dictates the material’s optical, chemical and electronic properties. As a result, each phase has different characteristics. The anatase phase has characteristics that make it better suited for use as an antibacterial agent and for applications such as hydrogen production. The rutile phase is better suited for use in other applications, such as photovoltaic cells, smart sensors and optical communication technologies. (more…)

Microneedle Sensors May Allow Real-Time Monitoring of Body Chemistry

By Guest PostDecember 27, 2011Sciencebiomedical engineering, diabetic patient, electrochemical sensors, glucose, lactate, microneedle sensor, microneedles, molecules, monitor glucose levels, north carolina state university, one dimension, ph levels, philip miller, roger narayan, shelby skoog, Technology, types of sensors, university of california, variety of chemicals

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 paper describing the research, and a professor in the joint biomedical engineering department of NC State’s College of Engineering and the University of North Carolina at Chapel Hill. (more…)

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Study Finds Natural Compound Can Be Used for 3-D Printing of Medical Implants

New Technique Controls Crystalline Structure of Titanium Dioxide

Microneedle Sensors May Allow Real-Time Monitoring of Body Chemistry