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Researchers Create Semiconductor ‘Nano-Shish-Kebabs’ With Potential for 3-D Technologies

By Guest PostMarch 1, 2013Science3 d devices, 3 d structure, chun li, crystalline layers, crystalline structure, crystals, electric charges, germanium sulfide, ges, ges nanowire, heterostructure, large surface area, linyou cao, miaofang chi, molybdenum sulfide, mos2, nano shish kebab, nanoscale structure, next generation sensors, next generation supercapacitors, north Carolina, one dimensional nanowire, photodetectors, photonic properties, researcher, semiconductor, solar cells, state university, three dimensional technologies, two dimensional nanosheets, weak oxidation, yifei yu

Researchers at North Carolina State University have developed a new type of nanoscale structure that resembles a “nano-shish-kebab,” consisting of multiple two-dimensional nanosheets that appear to be impaled upon a one-dimensional nanowire. However, the nanowire and nanosheets are actually a single, three-dimensional structure consisting of a seamless series of germanium sulfide (GeS) crystals. The structure holds promise for use in the creation of new, three-dimensional (3-D) technologies.

The researchers believe this is the first engineered nanomaterial to combine one-dimensional and two-dimensional structures in which all of the components have a shared crystalline structure. (more…)

Researchers Coat Spinal Polymer Implants with Bioactive Film to Improve Bonding with Bone

By Guest PostFebruary 22, 2013Health, Scienceafsaneh rabiei, bioactive film, body, bonding, bone, calcium phosphate, challenge, clinical testing, coating of hydroxyapatite, crystalline structure, degrees celsius, dissolve, heat shield, implants, improve, microwave, north Carolina, peek, spinal polymer implants, state university, stefan sandukas, success rate, surrounding bone, tissue, ysz, ysz layer, yttria stabilized zirconia

Researchers from North Carolina State University have for the first time successfully coated polymer implants with a bioactive film. The discovery should improve the success rate of such implants – which are often used in spinal surgeries.

The polymer used in these implants, called PEEK, does not bond well with bone or other tissues in the body. This can result in the implant rubbing against surrounding tissues, which can lead to medical complications and the need for additional surgeries. (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…)

Tag Archives: crystalline structure

Researchers Create Semiconductor ‘Nano-Shish-Kebabs’ With Potential for 3-D Technologies

Researchers Coat Spinal Polymer Implants with Bioactive Film to Improve Bonding with Bone

New Technique Controls Crystalline Structure of Titanium Dioxide