A device, possibly an unmanned aerial drone, was found on the White House grounds during the middle of the night while President Barack Obama and the first lady were in India, but his spokesman said today that it posed no threat. It was unclear whether their daughters, Sasha and Malia, were at home at the time of the incident with their grandmother, Marian Robinson, who also lives at the White House.
Unlike Bilbo's magic ring, which entangles human hearts, engineers have created a new microring that entangles individual particles of light, an important first step in a whole host of new technologies. Entanglement is one of the most intriguing and promising phenomena in all of physics. Properly harnessed, entangled photons could revolutionize computing, communications and cyber security.
A team of chemists at Nagoya Univ. has synthesized novel transition metal-complexed cycloparaphenylenes (CPPs) that enable selective monofunctionalization of CPPs for the first time, opening doors to the construction of unprecedented nanocarbons. The team has synthesized novel CPP chromium complexes and demonstrated their utility in obtaining monofunctionalized CPPs, which could be useful for making carbon nanotubes.
Cancer uses a little-understood element of cell signaling to hijack the communication process and spread, according to Rice Univ. researchers. A new computational study by researchers at the Rice-based Center for Theoretical Biological Physics shows how cancer cells take advantage of the system by which cells communicate with their neighbors as they pass messages to “be like me” or “be not like me.”
Scientists at the Univ. of York are part of a research team which has found that a recently discovered family of enzymes can degrade resistant forms of starch. Earlier research established that the enzymes, lytic polysaccharide monooxygenases (LPMOs), are able to degrade hard-to-digest biomass into its constituent sugars.
Researchers in Japan revealed that improvements should soon be expected in the manufacture of transistors that can be used, for example, to make flexible, paper-thin computer screens. The scientists reviewed the latest developments in research on photoactive organic field-effect transistors, devices that incorporate organic semiconductors, amplify weak electronic signals and either emit or receive light.
Since the beginning of recorded time, humans have used materials found in nature to improve their lot. Since the turn of this century, scientists have studied metamaterials, artificial materials engineered to bend electromagnetic, acoustic and other types of waves in ways not possible in nature. Now, a discovery has been made with these synthetic materials that may take engineers one step closer to building microscopes with superlenses.
Scientists at the Univ. of Liverpool have controlled the structure of a material to simultaneously generate both magnetization and electrical polarization, an advance which has potential applications in information storage and processing. The researchers demonstrated that it's possible to unlock these properties in a material which initially displayed neither by making designed changes to its structure.
The U.S. Navy is seeking permits to expand sonar and other training exercises off the Pacific Coast, a proposal raising concerns from animal advocates who say that more sonar-emitting buoys would harm whales and other creatures that live in the water. The Navy wants to deploy up to 720 sonobuoys at least 12 nautical miles off the coasts of Washington, Oregon and Northern California.
From aerial surveillance to cancer detection, mid-wavelength infrared (MWIR) radiation has a wide range of applications. And as the uses for high-sensitivity, high-resolution imaging continue to expand, MWIR sources are becoming more attractive. Currently, commercial technologies for MWIR detection can only operate at cryogenic temperatures in order to reduce thermal and electrical noise.
Theoretical physicists at Rice Univ. are living on the edge as they study the astounding properties of graphene. In a new study, they figure out how researchers can fracture graphene nanoribbons to get the edges they need for applications. New research shows it should be possible to control the edge properties of graphene nanoribbons by controlling the conditions under which the nanoribbons are pulled apart.
A Wyoming company said Friday it will replace a pipeline that spilled almost 40,000 gallons of oil into a river in Montana with a new line buried more deeply to protect against future accidents. The Jan. 17 spill into the Yellowstone River contaminated the water supply for 6,000 residents of Glendive in eastern Montana.
A team of Univ. of Wisconsin-Madison engineers has developed a new tool to help plot the future of solar fuels. In a paper recently published in Energy & Environmental Science, a team outlined a tool to help engineers better gauge the overall yield, efficiency and costs associated with scaling solar-fuel production processes up into large-scale refineries.
With its high electrical conductivity and optical transparency, indium tin oxide is one of the most widely used materials for touchscreens, plasma displays and flexible electronics. But its rapidly escalating price has forced the electronics industry to search for other alternatives. One potential and more cost-effective alternative is a film made with silver nanowires embedded in flexible polymers.
Many health advocates advise people to eat an orange and drink water rather than opt for a serving of sugary juice. But in the Journal of Agricultural and Food Chemistry, scientists report that the picture is not clear-cut. Although juice is indeed high in sugar, the scientists found that certain nutrients in orange juice might be easier for the body to absorb than when a person consumes them from unprocessed fruit.