Easily manufactured, low-cost artificial cells manufactured using microprinting may one day serve as drug and gene delivery devices, according to engineers at Penn State Univ. who are creating large arrays of artificial cells. Made of lipids and proteins, these uniformly sized cells can either remain attached to the substrate on which they grow, or become separated and used as freely moving vessels.
Researchers have proved the feasibility of a new...
Scientists at Penn State Univ. have developed a...
The presence of molecular hydrogen, in addition to...
Oxygen usually enters wine through the cork and interacts with metals, particularly iron, setting off a chain reaction that changes compounds that add often disagreeable tastes and smells to the drink. Penn State Univ. researchers have added chelation compounds that bind with metals to inhibit oxidation, or oxygen's ability to react with trace metals. These compounds, they found, were effective.
A research team including a Penn State chemical engineer was recently awarded a $3.9 million National Science Foundation grant to understand how blue-green algae convert nitrogen into oxygen. The objective is to learn how to "transplant" the nitrogen fixing capability of one species to another.
A new technology invented to automate the laborious process of preparing plant roots for phenotyping has morphed into a powerful tool for exploring the 3-D structure of small objects. Now, two former Penn State Univ. students have formed a startup company targeting agribusiness and horticultural research.
A wide range of biologically inspired materials may now be possible by combining protein studies, materials science and RNA sequencing, according to an international team of researchers. The researchers looked at proteins because they are the building blocks of biological materials and also often control sequencing, growth and self-assembly. RNA produced from the DNA in the cells is the template for biological proteins.
Global warming may further lessen the likelihood of the freak atmospheric steering currents that last year shoved Superstorm Sandy due west into New Jersey, a new study says. But the study's authors said the once-in-700-years path was only one factor in the $50 billion storm. They say other variables such as sea level rise and stronger storms will worsen with global warming and outweigh changes in steering currents predicted by models.
Most solar cells today are inorganic and made of crystalline silicon. These cells tend to be expensive, rigid and relatively inefficient when it comes to converting sunlight into electricity. Work by a team of chemical engineers at Penn State Univ. and Rice Univ. may lead to a new class of inexpensive organic solar cells, one that skips difficult-to-scale fullerene acceptors and relies on molecular self-assembly instead.
In complex crisis situations teams of experts must often make difficult decisions within a narrow time frame. However, voluminous amounts of information and the complexity of distributed cognition can hamper the quality and timeliness of decision-making by human teams and lead to catastrophic consequences. A Penn State Univ. team has devised a system that merges human and computer intelligence to support decision-making.
Bending light beams to your whim sounds like a job for a wizard or an a complex array of bulky mirrors, lenses and prisms, but a few tiny liquid bubbles may be all that is necessary to open the doors for next-generation, high-speed circuits and displays, according to Penn State researchers.
A new robot at the Univ. of Pennsylvania has a leg up on its predecessors now that researchers have outfitted it with jumping and climbing abilities—something that could make it particularly useful for such tricky propositions as military search missions or supply transport.
A new cost-effective polymer membrane can decrease the cost of alkaline batteries and fuel cells by allowing the replacement of expensive platinum catalysts without sacrificing important aspects of performance, according to Penn State Univ. researchers.
Thin glass is already widely used for displays. But even thinner glass, about one-tenth the thickness of display glass, can be customized to store energy at high temperatures. Recent experiments by a partnership of academic and industrial researchers have investigated various alkali-free glass compositions and thicknesses, and has resulted in inexpensive roll-to-roll glass capacitors with high energy density and high reliability.
Ultrasonic waves can find bubbles and cracks in adhesive bonds holding airplane composite parts together, and now aerospace engineers can select the best frequencies to detect adhesive failures in hard-to-reach places more quickly, thanks to Penn State Univ. researchers.
Ultrasonic waves can find bubbles and cracks in adhesive bonds holding airplane composite parts together. Different ultrasonic modes work best for different materials and configurations using the right one will locate more flaws with higher precision. Recent research has produced a technique that lets aerospace engineers more quickly select the best frequencies to detect adhesive failures in hard-to-reach places.
Jatropha, a plant variety that has been pursued as possible source for biofuel, has seeds with high oil content. But the oil's potential as a biofuel is limited because, for large-scale production, this shrub-like plant needs the same amount of care and resources as crop plants. By focusing on the plant’s drought response and using engineered genetics, the scientists have learned more about potentially improving the plant’s function.
Subjectivity is problematic when evaluating fingerprints, and quality is in the eye of the examiner. But three computer programs used together can give fingerprint grading unprecedented consistency and objectivity, according to Penn State Univ. researchers.
The ultimate dream come true for material scientists is to have the ability to make materials that can take on properties and behaviors to best suit our needs. But scientists first must truly understand the properties of cluster assembly through the individual cluster. Now, material scientists will have greater insight into the organizing principles that allow for the design of nanoscopic materials with specific band gap energy.
Theoretically, hydropower can step in when wind turbines go still, but barriers to this non-polluting resource serving as a backup are largely policy- and regulation-based, according to recent research. Hydroelectric dams are controlled by guide curves that account for drinking water and droughts. They cannot simply release water to meet some electricity demand or hold back water when electricity is in low demand.
Theoretically, hydropower can step in when wind turbines go still, but barriers to this non-polluting resource serving as a backup are largely policy- and regulation-based, according to Penn State Univ. researchers. The U.S. Dept. of Energy recently examined the feasibility of producing 20% of U.S. electricity from wind by 2030.
The smaller components become, the more difficult it is to create patterns in an economical and reproducible way, according to an interdisciplinary team of Penn State Univ. researchers who, using sound waves, can place nanowires in repeatable patterns for potential use in a variety of sensors, optoelectronics and nanoscale circuits.
Cheaper clean-energy technologies could be made possible thanks to a new discovery. A Penn State Univ. research team has found that an important chemical reaction that generates hydrogen from water is effectively triggered—or catalyzed—by a nanoparticle composed of nickel and phosphorus, two inexpensive elements that are abundant on Earth.
One of the densest objects in the universe, a neutron star about 10,000 light years from Earth, has been discovered suddenly putting the brakes on its spinning speed. The event is a mystery that holds important clues for understanding how matter reacts when it is squeezed more tightly than the density of an atomic nucleus—a state that no laboratory on Earth has achieved.
A new version of solar cells created by laboratories at Rice and Pennsylvania State universities could open the door to research on a new class of solar energy devices. The photovoltaic devices are based on block copolymers, self-assembling organic materials that arrange themselves into distinct layers. They easily outperform other cells with polymer compounds as active elements.
Earthquakes that last minutes rather than seconds are a relatively recent discovery, according to an international team of seismologists. Researchers have been aware of these slow earthquakes, only for the past five to 10 years because of new tools and new observations, but these tools may explain the triggering of some normal earthquakes and could help in earthquake prediction.
A massive telescope buried in the Antarctic ice has detected 28 extremely high-energy neutrinos—elementary particles that likely originate outside our solar system. Two of these neutrinos had energies many thousands of times higher than the highest-energy neutrino that any man-made particle accelerator has ever produced, according to a team of IceCube Neutrino Observatory researchers. The estimate is greater than 1 peta-electron volt.
For the first time, an elusive step in the process of human DNA replication has been demystified by scientists at Penn State University. According to senior author Stephen J. Benkovic, the scientists "discovered how a key step in human DNA replication is performed."
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