Scientists have developed a new hybrid, solar-energy system that harnesses the full spectrum of the sun’s radiation by pairing a photovoltaic cell with polymer films. The films convert the light that goes unused by the solar cell into heat and then converts the heat into electricity. They report on their device, which produces a voltage more than five times higher than other hybrid systems, in ACS Nano.
Before embarking on a transcontinental journey, jet airplanes fill up with tens of thousands of...
A drop of water self-heals a multiphase polymer derived from the genetic code of squid ring...
The significant advance, by a team at the Univ. of New South Wales (UNSW) in Sydney appears in Nature. "What we have is a game-changer," said team leader Andrew Dzurak, Scientia Professor and Director of the Australian National Fabrication Facility at UNSW.
Inspired by a naturally occurring material found in marine mussels, researchers at The Univ. of Texas at Austin have created a new flame retardant to replace commercial additives that are often toxic and can accumulate over time in the environment and living animals, including humans.
Months of warning signs from Mauna Loa, on Hawaii’s Big Island, prompted the U.S. Geological Survey to recently start releasing weekly updates on activity at the world’s largest active volcano. For now, such warning signs can only rely on external clues, like earthquakes and gas emissions. But a Univ. of Washington simulation has managed to demonstrate what’s happening deep inside the volcano.
Watching the clouds go by, swirls of white puff up and melt away. The changes mirror mixing within the clouds as drier air mingles with water-saturated air. New research led by Michigan Technological Univ. with support from the National Center for Atmospheric Research (NCAR) and the Max Planck Institute for Chemistry, Mainz Univ., analyzes this mixing with holographic imaging and an airborne laboratory.
Notch receptors are core components of the signaling pathways that regulate the development of cells within the human body. Notch signaling pathways can determine how cells proliferate or change during development, and defects in Notch signaling can lead to many diseases, including several types of cancer and developmental disorders.
Using nanometer-scale components, researchers have demonstrated the first optical rectenna, a device that combines the functions of an antenna and a rectifier diode to convert light directly into DC current. Based on multiwall carbon nanotubes and tiny rectifiers fabricated onto them, the optical rectennas could provide a new technology for photodetectors that would operate without the need for cooling.
The ultra-stable properties of the proteins that allow deep-diving whales to remain active while holding their breath for up to two hours could help Rice Univ. biochemist John Olson and his colleagues finish a 20-year quest to create lifesaving synthetic blood for human trauma patients.
Trudging through the Maryland woods, the soldier carried a bulbous pack. He held a gun in his hands. But something was different. Cables hung around him, extending from his pack to his pants. At the Aberdeen Proving Ground, scientists are performance testing a battery-powered soft exoskeleton.
The Marines are currently testing a series of robotic creations to gauge how well they will perform in the field.
Researchers from the Swiss Federal Institute of Technology (ETH) Zurich released a video showing drones building a bridge as part of the Aerial Construction Project.
Visually, it seems like a simple process. An extruder drizzles clear liquid in a Y formation. Red and green dots are added before the apparatus is complete with more layers of clear liquid. Unlike its deceptive simplicity, the object is meant to guide a complex process.
Around 252 million years ago, life on Earth collapsed in spectacular and unprecedented fashion, as more than 96% of marine species and 70% of land species disappeared in a geological instant. The so-called end-Permian mass extinction—or more commonly, the “Great Dying”—remains the most severe extinction event in Earth’s history.
Salk scientists have developed a new way to selectively activate brain, heart, muscle and other cells using ultrasonic waves. The new technique, dubbed sonogenetics, has some similarities to the burgeoning use of light to activate cells in order to better understand the brain.
New research shows how individual atoms move in trillionths of a second to form wrinkles on a three-atom-thick material. Revealed by a brand new “electron camera,” one of the world’s speediest, this unprecedented level of detail could guide researchers in the development of efficient solar cells, fast and flexible electronics and high-performance chemical catalysts.
The boiling of water is at the heart of many industrial processes, from the operation of electric power plants to chemical processing and desalination. But the details of what happens on a hot surface as water boils have been poorly understood, so unexpected hotspots can sometimes melt expensive equipment and disable plants.