Scientists are developing a portable technology that will safely and quickly detect nuclear material hidden within large objects such as shipping cargo containers or sealed waste drums. The researchers have been awarded over $10 million from the NNSA to combine the capabilities of conventional building-size research instruments with the transportable size of a truck for security applications on the go.
In the quantum world of light, being distinguishable means staying lonely. Only those photons that are indistinguishable can wind up in a pair, through what is called Hong-Ou-Mandel interference. This subtle quantum effect has been successfully imaged for the first time by two doctoral students from the Faculty of Physics at the University of Warsaw.
Albert Einstein tells us that clocks run slower the deeper they are in the gravitational potential well of a mass. This effect is described by General Relativity Theory as the gravitational red shift. General Relativity Theory also predicts that the rates of all clocks are equally influenced by gravitation independent of how these clocks are physically or technically constructed. However, more recent theories of gravitation...
Researchers ohave unveiled an important step in the conversion of light into storable energy: They studied the formation of so-called polarons in zinc oxide. The pseudoparticles travel through the photoactive material until they are converted into electrical or chemical energy at an interface.
Using a technique that introduces tiny wrinkles into sheets of graphene, researchers from Brown Univ. have developed new textured surfaces for culturing cells in the lab that better mimic the complex surroundings in which cells grow in the body.
If you've studied ingredient labels on food packaging, you've probably noticed that soy lecithin is in a lot of products, ranging from buttery spreads to chocolate cake. Scientists have now found a potential new role for this all-purpose substance: dispersing crude oil spills. Their study, which could lead to a less toxic way to clean up these environmental messes, appears in ACS Sustainable Chemistry & Engineering.
New work from the Carnegie Institution’s Russell Hemley and Ivan Naumov hones in on the physics underlying the recently discovered fact that some metals stop being metallic under pressure. Metals are compounds that are capable of conducting the flow of electrons that make up an electric current.
As the search continues for Earth-size planets orbiting at just the right distance from their star, a region termed the habitable zone, the number of potentially life-supporting planets grows. In two decades we have progressed from having no extrasolar planets to having too many to search. Narrowing the list of hopefuls requires looking at extrasolar planets in a new way.
Much like magnetic resonance imaging is able to scan the interior of the human body, the emerging technique of "picosecond ultrasonics," a type of acoustic imaging, can be used to make virtual slices of biological tissues without destroying them. Now, a team of researchers in Japan and Thailand has shown that picosecond ultrasonics can achieve micron resolution of single cells, imaging their interiors in slices separated by 150 nm.
Taking child's play with building blocks to a whole new level, the nanometer scale, scientists at Brookhaven National Laboratory have constructed 3-D "superlattice" multicomponent nanoparticle arrays where the arrangement of particles is driven by the shape of the tiny building blocks. The method uses linker molecules made of complementary strands of DNA to overcome the blocks' tendency to pack together.
A new type of graphene aerogel will make for better energy storage, sensors, nanoelectronics, catalysis and separations. Lawrence Livermore National Laboratory researchers have made graphene aerogel microlattices with an engineered architecture via a 3D printing technique known as direct ink writing.
Drizzling honey on toast can produce mesmerizing, meandering patterns, as the syrupy fluid ripples and coils in a sticky, golden thread. Dribbling paint on canvas can produce similarly serpentine loops and waves. The patterns created by such viscous fluids can be reproduced experimentally in a setup known as a “fluid mechanical sewing machine,” in which an overhead nozzle deposits a thick fluid onto a moving conveyor belt.
Google is trying to shake up the wireless phone industry with a low-priced service designed to pressure major carriers into making it more affordable for people to get online and use Google's services. The service, called "Project Fi," debuted Wednesday, about two months after Google revealed its plans to expand its ever-growing empire into providing wireless connections for smartphones.
Imagine shrinking tubes and beakers down to the size of a credit card. When engineers figured out how to do that two decades ago, they enabled complex tests to be performed with tiny "lab on a chip" technology. But until now, there has been no way to accurately measure the size of the tiny vessels they created. Now, scientists at NIST have found a potential solution to this longstanding manufacturing issue.
As baby boomers age, the number of people diagnosed with Parkinson's disease is expected to increase. Patients who develop this disease usually start experiencing symptoms around age 60 or older. Currently, there's no cure, but scientists are reporting a novel approach that reversed Parkinson's-like symptoms in rats. Their results, published in ACS Nano, could one day lead to a new therapy for human patients.