A Northwestern University research team has found a way to manufacture single laser devices that are the size of a virus particle and that operate at room temperature. These plasmonic nanolasers could be readily integrated into silicon-based photonic devices, all-optical circuits, and nanoscale biosensors.
Oxide catalysts play an integral role in many chemical transformations. Greener, more efficient chemical processes would benefit greatly from solid oxide catalysts that are choosier about their reactants, but achieving this has prove a challenge. Now, a team of researchers have developed a straightforward and generalizable process for making reactant-selective oxide catalysts by encapsulating the particles in a sieve-like film that blocks unwanted reactants.
A new study by Northwestern University researchers has revealed that public domain name services (DNS) could actually slow down users’ web-surfing experience. As a result, researchers have developed a solution to help avoid such an impact: a tool called “namehelp” that could speed web performance by 40%.
Researchers from Johns Hopkins and Northwestern universities have discovered how to control the shape of nanoparticles that move DNA through the body and have shown that the shapes of these carriers may make a big difference in how well they work in treating cancer and other diseases. The technique is noteworthy because it does not use a virus to carry DNA into cells.
Northwestern University scientists have developed a thermoelectric material that is, according to the university, the best in the world at converting waste heat to electricity, which is good news once one realizes nearly two-thirds of energy input is lost as waste heat. The material could signify a paradigm shift.
The system currently being used to test for mercury and its very toxic derivative, methyl mercury, is time-intensive, costly, and can only detect quantities at already toxic levels. Researchers at Northwestern University and in Switzerland have invented a device consisting of a strip of glass with a nanoparticle film attached that can detect heavy metals in quantities more than a million times smaller than is currently possible.
Northwestern University researchers have broken a world record by creating two new synthetic materials with the greatest amount of surface areas reported to date. Named NU-109 and NU-110, the materials belong to a class of crystalline nanostructure known as metal-organic frameworks (MOFs) that are promising vessels for natural gas storage for vehicles, catalysts, and other sustainable materials chemistry.
Mercury, when dumped in lakes and rivers, accumulates in fish, and often ends up on our plates. A Swiss-American team of researchers has devised a simple, inexpensive system based on nanoparticles, a kind of nano-velcro, to detect and trap this toxic pollutant as well as others. The particles are covered with tiny hairs that can grab onto toxic heavy metals such as mercury and cadmium.
When it comes to applications like standoff sensing the laser's strength is of the utmost importance. A stronger and purer beam means devices can sense danger more accurately from a greater distance, which translates into safer workers, soldiers, and police officers. Northwestern University researchers have developed a new resonator that creates the purest, brightest, and most powerful single-mode quantum cascade lasers yet at the 8 to 12 micron range.
Northwestern University scientists have connected 250 years of organic chemical knowledge into one giant computer network—a chemical Google on steroids. A decade in the making, the software optimizes syntheses of drug molecules and other important compounds and combines long (and expensive) syntheses of compounds into shorter and more economical routes.
A team of organic chemists have discovered they can create very long crystals with desirable properties using just two small organic molecules that are extremely attracted to each other. The attraction between the two molecules causes them to self assemble into an ordered network, and, most importantly, they possess the ferroelectric properties that are useful in computing.
Northwestern University researchers have created an entirely new family of logic circuits based on magnetic semiconductor devices. The advance could lead to logic circuits up to 1 million times more power-efficient than today's.
Northwestern University researchers are the first to discover that very different complex networks—ranging from global air traffic to neural networks—share very similar backbones. By stripping each network down to its essential nodes and links, they found each network possesses a skeleton and these skeletons share common features, much like vertebrates do.
It's not magic, but new materials designed by two Northwestern University researchers seem to exhibit magical properties. Some contract when they should expand, and others expand when they should contract.
Argonne National Laboratory announced major new efforts with Northwestern University and the University of Chicago to advance the research and development of new materials to help solve the nation’s challenges in the fields of energy, health, and security.
Researchers at Northwestern University's Department of Radiation Oncology and Argonne National Laboratory recently deployed a new non-destructive X-ray microscopy solution from Xradia to image cryogenically preserved cells and advance studies of intra-cellular biology.
Northwestern University scientists have developed a powerful analytical method that they have used to direct stem cell differentiation. Out of millions of possibilities, they rapidly identified the chemical and physical structures that can cue stem cells to become osteocytes, cells found in mature bone.
Prosthetic materials for hips, which include metals, polymers, and ceramics, have a lifetime typically exceeding 10 years. However, beyond 10 years the failure rate generally increases. Engineers and physicians have discovered that graphitic carbon is a key element in a lubricating layer that forms on metal-on-metal hip implants.
Researchers at Northwestern University have developed a new method for creating scaffolds for tissue engineering applications, providing an alternative that is more flexible and less time-intensive than current technology.
Brooding in your apartment on Saturday afternoon? A new smart phone intuits when you're depressed and will nudge you to call or go out with friends. It's the future of therapy at a new Northwestern University Feinberg School of Medicine center where scientists are inventing Web-based, mobile, virtual technologies to treat depression and other mood disorders.
When gold vanishes from a very important location, it usually means trouble. At the nanoscale, however, it could provide more knowledge about certain types of materials. A recent discovery that enables scientists to replace gold nanoparticles with dummy "spacers" has allowed scientists to create materials with never-before-seen structures, which may lead to new properties.
Two related studies from Northwestern University offer new strategies for tackling the challenges of preventing and treating diseases of protein folding. The research identified new genes and pathways that prevent protein misfolding and toxic aggregation, keeping cells healthy, and also identified small molecules with therapeutic potential that restore health to damaged cells, providing new targets for drug development.
Just 100 nm in diameter, nanowires are often considered one-dimensional. But researchers at Northwestern University have recently reported that individual gallium nitride nanowires show strong piezoelectricity—a type of charge-generation caused by mechanical stress—in three dimensions.
New research from Northwestern University and Ohio State University shows that the average age at which Nobel laureates in chemistry, physics and physiology or medicine do their prize-winning work is increasing. The trend may have less to do with longer life spans than with how researchers are trained.
Using the Advanced Photon Source at Argonne National Laboratory, a group of Northwestern University and Argonne scientists have figured out the secrets of algae that can preferentially take up strontium over calcium—a task so difficult that it's not easily done even in a laboratory. The algae could form the basis of new technologies to clean up contaminated land or water.