An international team of researchers has discovered that the catalytic activity of nanoporous gold originates from high concentrations of surface defects present within its complex 3D structure. The research has the potential to assist in the development of more efficient and durable catalytic converters and fuel cells because nanoporous gold is a catalytic agent for oxidizing carbon monoxide.
Major depression or chronic stress can cause the loss of brain volume, a condition that contributes to both emotional and cognitive impairment. Now a team of researchers led by Yale University scientists has discovered one reason why this occurs—a single genetic switch that triggers loss of brain connections in humans and depression in animal models.
Clemson University researchers are taking common materials to uncommon places by transforming easily obtainable and affordable materials into fiber. The research team found that sapphire possesses extraordinary properties that make it exceptionally valuable for high-power lasers in which the light intensity interacts with sound waves in the glass and leads to diminished power-handling capabilities.
A team of researchers at Columbia Engineering, in collaboration with Brookhaven National Laboratory, has succeeded in performing the first quantitative characterization of van der Waals interactions at metal/organic interfaces at the single-molecule level.
When you look at a gift-wrapped present, the basic properties of the wrapping paper are not generally changed by the nature of the gift inside. But surprising new experiments conducted at the Massachusetts Institute of Technology show that graphene behaves quite differently depending on the nature of material it's wrapped around. When sheets of graphene are placed on substrates made of different materials, fundamental properties can be drastically different, depending on the nature of the underlying material.
For years, many scientists had thought that plate tectonics existed nowhere in our solar system but on Earth. Now, a University of California, Los Angeles scientist has discovered that the geological phenomenon, which involves the movement of huge crustal plates beneath a planet's surface, also exists on Mars.
Earthworms creep along the ground by alternately squeezing and stretching muscles along the length of their bodies, a mechanism called peristalsis, inching forward with each wave of contractions. Now researchers at Massachusetts Institute of Technology, Harvard University, and Seoul National University have engineered a soft autonomous robot that moves via peristalsis, crawling across surfaces by contracting segments of its body, much like an earthworm.
Scientists already know that the tiny hairs on geckos' toe pads enable them to cling, like Velcro, to vertical surfaces. Now, University of Akron researchers are unfolding clues to the reptiles' gripping power in wet conditions in order to create a synthetic adhesive that sticks when moist or on wet surfaces.
Researchers from the University of Pennsylvania, along with collaborators from Italy and Spain, have created a material that catalyzes the burning of methane 30 times better than currently available catalysts. The discovery offers a way to more completely exploit energy from methane, potentially reducing emissions of this greenhouse gas from vehicles that run on natural gas.
As the medical community continues to make positive strides in personalized cancer therapy, scientists know some dead ends are unavoidable. Drugs that target specific genes in cancerous cells are effective, but not all proteins are targetable. In fact, it has been estimated that as few as 10% to 15% of human proteins are potentially targetable by drugs. For this reason, Georgia Institute of Technology researchers are focusing on ways to fight cancer by attacking defective genes before they are able to make proteins.
The brain has billions of neurons, arranged in complex circuits that allow us to perceive the world, control our movements, and make decisions. Deciphering those circuits is critical to understanding how the brain works and what goes wrong in neurological disorders. Massachusetts Institute of Technology neuroscientists have now taken a major step toward that goal.
An international research team led by the University of Colorado Boulder and the University of Helsinki has discovered a surprising new chemical compound in Earth's atmosphere that reacts with sulfur dioxide to form sulfuric acid, which is known to have significant impacts on climate and health.
Tests performed at NIST show that a new method for splitting photon beams could overcome a fundamental physical hurdle in transmitting electronic data. The findings confirm that a prototype device developed with collaborators at Stanford University can double the amount of quantum information that can be sent readily through fiber-optic cables, and in theory could lead to an even greater increase in the rate of this type of transmission.
Bioengineers at the University of California, San Diego have developed a method of modeling, simultaneously, an organism’s metabolism and its underlying gene expression. In addition to serving as a platform for investigating fundamental biological questions, this technology enables far more detailed calculations of the total cost of synthesizing many different chemicals, including biofuels.
Scientists at the University of Glasgow have captured images of quantum entanglement on camera for the first time. Making use of a 201 by 201 pixel array, the highly sensitive camera observed the full field of the quantum light at the same time, allowing the team to see up to 2,500 different entangled dimensions or states.
Thin, conductive films are useful in displays and solar cells. A new solution-based chemistry developed at Brown University for making indium tin oxide films could allow engineers to employ a much simpler and cheaper manufacturing process.
When you're just a few microns long, swimming can be difficult. At that size scale, the viscosity of water is more like that of honey, and momentum can't be relied upon to maintain forward motion. Microorganisms, of course, have evolved ways to swim in spite of these challenges, but tiny robots haven't quite caught up, until now.
Researchers at the University of Dundee have identified a molecule that could play a key role in how cells develop into the building blocks of life. The molecule, called cyclic-di-GMP, has been identified as being the signal which can induce differentiation into stalk cells.
The first controlled studies of extremely hot, dense matter have overthrown the widely accepted 50-year-old model used to explain how ions influence each other's behavior in a dense plasma. The results should benefit a wide range of fields, from research aimed at tapping nuclear fusion as an energy source to understanding the inner workings of stars.
It's a longstanding question in biology: How do cells know when to progress through the cell cycle? In simple organisms such as yeast, cells divide once they reach a specific size. However, determining if this holds true for mammalian cells has been difficult, in part because there has been no good way to measure mammalian cell growth over time, until now.
One of the most daunting challenges facing pharmaceutical scientists today are "undruggable proteins"—the approximately 80% of proteins involved in human disease that do not interact with current drugs. Yale University researchers have identified a novel way to design drugs for these previously inaccessible proteins.
A team of Harvard University scientists announced the discovery of serious and wholly unexpected ozone loss over the United States in summer. The finding is startling because the complex atmospheric chemistry that destroys ozone has previously been thought to occur only at very cold temperatures over polar regions where there is very little threat to humans.
The secret to the deadly 2011 E. coli outbreak in Germany has been decoded, thanks to research conducted at Michigan State University. The deadliest E. coli outbreak ever was traced to a particularly virulent strain that researchers had never seen in an outbreak before. By focusing on the bacteria's biofilm, the researchers have devised a way to potentially tame the killer bacteria.
Researchers trying to herd tiny particles into useful ordered formations have found an unlikely ally: entropy, a tendency generally described as "disorder." Computer simulations by University of Michigan scientists and engineers show that the property can nudge particles to form organized structures. By analyzing the shapes of the particles beforehand, they can even predict what kinds of structures will form.
Imagine being able to design a new aircraft engine part on a computer, and then being able to it. Not the design; the actual part. And not just a lightweight, nonfunctional model, but an actual working part to be installed in an engine. The University of Dayton Research Institute was awarded $3 million for the Ohio Third Frontier to provide specialized materials for use in additive manufacturing.