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Nanoscale Coatings Improve Stability and Efficiency of Devices for Renewable Fuel Generation

By Guest PostDecember 7, 2013Environment, Scienceaaron k vannucci, acidic, ald, atomic layer deposition, berc kalanyan, carbon dioxide, carbon neutral fuels, chemical pathway, device, efficiency, Environment, gregory parsons, hydrocarbon fuel, hydrogen, klondike bar, leila alibabaei, low ph, mark losego, molecular catalysts, molecular photoelectrochemical cell, nanoscale coatings, north Carolina, oxygen, ph, renewable fuel generation, solar water splitting, stability, state university, ultra thin layer, water oxidation, water splitting devices

Splitting water into its components, two parts hydrogen and one part oxygen, is an important first step in achieving carbon-neutral fuels to power our transportation infrastructure – including automobiles and planes.

Now, North Carolina State University researchers and colleagues from the University of North Carolina at Chapel Hill have shown that a specialized coating technique can make certain water-splitting devices more stable and more efficient. Their results are published online in two separate papers in the Proceedings of the National Academy of Sciences. (more…)

Companies that Screen Social Media Accounts Alienate Job Candidates

By Guest PostDecember 3, 2013Economy, Technologyadam meade, company, facebook account, hypothetical scenario, job applicant, job candidate, lori foster thompson, north Carolina, potential employee, privacy, professionalism, social media, state university, will stoughton

Research from North Carolina State University shows companies that screen the social media accounts of job applicants alienate potential employees – making it harder for them to attract top job candidates. In some cases, social media screening even increases the likelihood that job candidates may take legal action against the offending company.

“The recruiting and selection process is your first indication of how you’ll be treated by a prospective employer,” says Will Stoughton, a Ph.D. student at NC State and lead author of a paper describing the research. “If elite job prospects feel their privacy has been compromised, it puts the hiring company at a competitive disadvantage.” (more…)

Researchers Integrate Single-Crystal BFO onto a Silicon Chip, Open Door to Smart Devices

By Guest PostDecember 1, 2013Sciencebismuth ferrite, data, electronic functions, jay narayan, john prater, magnetic field, magnetic field strength, north Carolina, s rao, silicon chip, single crystal bfo, smart devices, state university, substrate

Researchers from North Carolina State University have for the first time integrated a material called bismuth ferrite (BFO) as a single crystal onto a silicon chip, opening the door to a new generation of multifunctional, smart devices.

BFO has both ferromagnetic and ferroelectric properties, meaning that it can be magnetized by running an electric current through the material. Potential applications for BFO include new magnetic memory devices, smart sensors and spintronics technologies. (more…)

Colossal New Predatory Dino Terrorized Early Tyrannosaurs

By Guest PostNovember 24, 2013Nature, Scienceacrocanthosaurus, carcharodontosaur, carnivorous dinosaur, cedar mountain formation, early tyrannosaurs, largest ever discovered, late cretaceous period, lindsay zanno, meeker family, neovenatoridae, new predatory dino, new species, North America, north Carolina, paleontologist, peter makovicky, siats meekerorum, skeleton, small bodied tyrannosaurs, state university, tyrannosaurus rex, utah, ute tribal legend

A new species of carnivorous dinosaur – one of the three largest ever discovered in North America – lived alongside and competed with small-bodied tyrannosaurs 98 million years ago. This newly discovered species, Siats meekerorum, (pronounced see-atch) was the apex predator of its time, and kept tyrannosaurs from assuming top predator roles for millions of years.

Named after a cannibalistic man-eating monster from Ute tribal legend, Siats is a species of carcharodontosaur, a group of giant meat-eaters that includes some of the largest predatory dinosaurs ever discovered. The only other carcharodontosaur known from North America is Acrocanthosaurus, which roamed eastern North America more than 10 million years earlier. Siats is only the second carcharodontosaur ever discovered in North America; Acrocanthosaurus, discovered in 1950, was the first. (more…)

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…)

Mosquitofish Genital Shape Linked to Presence of Predators

By Guest PostOctober 29, 2013Scienceblue holes, evolutionary changes, gambusia hubbsi, gambusia predators, justa heinen kay, male bahamas mosquitofish, male genital shape, mosquitofish genital shape, north Carolina, presence of predators, sperm transferring organ, state university, threat of predation

When predators lurk nearby, male Bahamas mosquitofish (Gambusia hubbsi) change mating strategies, rejecting elaborate courting rituals for more frequent and sometimes forceful encounters with females.

But as a recent North Carolina State University study shows, mating strategies aren’t the only things changing for G. hubbsi when predators abound. The shape and size of the male fish’s genitalia are also linked to the presence or absence of predators. (more…)

New Model Should Expedite Development of Temperature-Stable Nano-Alloys

By Guest PostOctober 9, 2013Sciencecarl koch, elevated temperature, hasan kotan, high temperature alloys, lightweight aluminum alloys, model, mostafa saber, nano alloys, nanoscale grain, nanoscale material, north Carolina, nuclear energy applications, ron scattergood, stabilizing agent, state university, temperature stable, theoretical model

Researchers from North Carolina State University have developed a new theoretical model that will speed the development of new nanomaterial alloys that retain their advantageous properties at elevated temperatures.

Nanoscale materials are made up of tiny crystals, or grains, that are less than 100 nanometers in diameter. These materials are of interest to researchers, designers and manufacturers because two materials can have the same chemical composition but very different mechanical properties depending on their grain size. For example, materials with nanoscale grains can be harder and stronger than chemically identical materials with larger grains. (more…)

Scaling Up Personalized Query Results for Next Generation of Search Engines

By Guest PostOctober 2, 2013Technology8gb machine, ambient query context, frequent click pattern, haizhou fu, hyeongsik kim, jaguar speed, jaguar supercomputer, kemafor anyanwu, north Carolina, personalized search results, search engine, state university

North Carolina State University researchers have developed a way for search engines to provide users with more accurate, personalized search results. The challenge in the past has been how to scale this approach up so that it doesn’t consume massive computer resources. Now the researchers have devised a technique for implementing personalized searches that is more than 100 times more efficient than previous approaches.

At issue is how search engines handle complex or confusing queries. For example, if a user is searching for faculty members who do research on financial informatics, that user wants a list of relevant webpages from faculty, not the pages of graduate students mentioning faculty or news stories that use those terms. That’s a complex search. (more…)

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