The Center for Integrated Nanostructure Physics (CINAP) within IBS has reported results correlating the flake merging angle with grain boundary (GBs) properties, and proven that increasing the merging angle of GBs drastically improves the flow of electrons. This correlates to an increase in the carrier mobility from less than 1 cm2V-1s-1 for small angles, to 16cm2 V-1s-1 for angles greater than 20°. The paper, entitled, 'Misorientation-angle-dependent electrical transport across molybdenum disulfide grain boundaries' is published in the journal Nature Communications.
Earth
A bewildering physics problem has apparently been solved by researchers, in a study which provides a mathematical basis for understanding issues ranging from predicting the formation of deserts, to making artificial intelligence more efficient.
In research carried out at the University of Cambridge, a team developed a computer program that can answer this mind-bending puzzle: Imagine that you have 128 soft spheres, a bit like tennis balls. You can pack them together in any number of ways. How many different arrangements are possible?
What if you could make any object out of a flat sheet of paper?
That future is on the horizon thanks to new research by L. Mahadevan, the Lola England de Valpine Professor of Applied Mathematics, Organismic and Evolutionary Biology, and Physics at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS). He is also a core faculty member of the Wyss Institute for Biologically Inspired Engineering, and member of the Kavli Institute for Bionano Science and Technology, at Harvard University.
Boulder, Colo., USA - When clayey materials are compressed and sheared, they commonly develop a "scaly fabric" wherein the clay is divided by braided shear surfaces into lentil-shaped chips. Although such scaly fabrics are found at the bed of glaciers, the base of landslides, and in gougey faults, little is known about how they form or how they deform. In their article for Geology, Matthew Tarling and Christina Rowe use dry lentils to help explore this process.
Athens, Ga. - If environmentalists want to protect fragile ecosytems from landing in the hands of developers--in the U.S. and around the globe--they should team up with ecotourists, according to a University of Georgia study published in the Journal of Ecotourism.
WASHINGTON - There would not be sufficient benefit to updating estimates of the social cost of carbon (SCC) within a year based only on the revision of a specific climate parameter in the existing framework used by the government's interagency group to measure the SCC, says a new interim report from the National Academies of Sciences, Engineering, and Medicine.
Since lasers were first produced in the early 1960s, researchers have worked to apply laser technology from welding metal to surgeries, with laser technology advancing quickly through the last 50 years.
Surgery, chemotherapy, and radiation therapy all play important roles in cancer treatment, and sometimes the best successes come from combining all three approaches.
Quantum systems are extremely hard to analyse if they consist of more than just a few parts. It is not difficult to calculate a single hydrogen atom, but in order to describe an atom cloud of several thousand atoms, it is usually necessary to use rough approximations. The reason for this is that quantum particles are connected to each other and cannot be described separately. Kaspar Sakmann (TU Wien, Vienna) and Mark Kasevich (Stanford, USA) have now shown in an article published in Nature Physics that this problem can be overcome.
New interdisciplinary research in the Southwest United States has resolved long-standing debates on the timing and magnitude of American Indian population collapse in the region.
The severe and rapid collapse of Native American populations in what is now the modern state of New Mexico didn't happen upon first contact with Spanish conquistadors in the 1500s, as some scholars thought. Nor was it as gradual as others had contended.
El Niño is fairly well understood, and by now it's a household word. But another huge system in the tropical Indian and Pacific oceans, which wreaks similar havoc in world weather, is relatively unknown and is just beginning to be explained.
University of Washington scientists have published a mathematical model that could help explain and forecast the Madden-Julian Oscillation, a massive cluster of thunderstorms that plays a role in global weather.
Antihydrogen is a particular kind of atom, made up of the antiparticle of an electron - a Positron - and the antiparticle of a Proton - an antiproton. Scientists hope that studying the formation of anti hydrogen will ultimately help explain why there is more matter than antimatter in the universe. In a new study published in EPJ D, Igor Bray and colleagues from Curtin University, Perth, Australia, demonstrate that the two different numerical calculation approaches they developed specifically to study collisions are in accordance.
FORT COLLINS, COLO. - For those living with the threat to life and property from wildfires, Colorado State University scientists have some more bad news: Wildfire smoke seems to elevate levels of ozone, a nasty air pollutant with proven adverse health effects.
To date, research on the effects of climate change has underestimated the contribution of seawater expansion to sea level rise due to warming of the oceans. A team of researchers at the University of Bonn has now investigated, using satellite data, that this effect was almost twice as large over the past twelve years than previously assumed. That may result in, for example, significantly increased risks of storm surges. The scientists are presenting their findings in the renowned scientific journal Proceedings of the National Academy of Sciences of the United States of America (PNAS).
New Haven, Conn. - A Yale University study suggests that continent-scale monsoons will adapt to climate change gradually, without suddenly losing their watery oomph.
Record-setting temperatures over the past century and a half are extremely unlikely to have occurred without human-caused climate change, but the odds of that happening are not quite as low as previously reported, according to an international team of meteorologists.