An official website of the United States government.
Researchers have explored in unprecedented detail catalysts that allow some chemical reactions, which normally require high heat, to proceed at room temperature. The energy-saving catalysts use sunlight to excite localized surface plasmons – oscillations of groups of electrons on the surface of certain metal nanoparticles.
Researchers have explored in unprecedented detail catalysts that allow some chemical reactions, which normally require high heat, to proceed at room temperature. The energy-saving catalysts use sunlight to excite localized surface plasmons – oscillations of groups of electrons on the surface of certain metal nanoparticles.
Researchers have proposed and demonstrated a phonon laser using an optically levitated nanoparticle. A phonon is a quantum of energy associated with a sound wave. The researchers studied the mechanical vibrations of the nanoparticle, which was levitated against gravity by the force of radiation at the focus of an optical laser beam.
Researchers have proposed and demonstrated a phonon laser using an optically levitated nanoparticle. A phonon is a quantum of energy associated with a sound wave. The researchers studied the mechanical vibrations of the nanoparticle, which was levitated against gravity by the force of radiation at the focus of an optical laser beam.
Scientists at the U.S. Naval Research Laboratory have developed and patented the fabrication of a transparent, luminescent material they say could give smartphone and television screens flexible, stretchable, and shatterproof properties.
Scientists at the U.S. Naval Research Laboratory have developed and patented the fabrication of a transparent, luminescent material they say could give smartphone and television screens flexible, stretchable, and shatterproof properties.
Engineers have developed a novel fabrication method to create dyed threads that change color when they detect a variety of gases. The researchers demonstrated that the threads can be read visually or by use of a smartphone camera to detect changes of color due to analytes as low as 50 parts per million. These gas-detecting threads could be used in medical, workplace, military, and rescueaenvironments.
Engineers have developed a novel fabrication method to create dyed threads that change color when they detect a variety of gases. The researchers demonstrated that the threads can be read visually or by use of a smartphone camera to detect changes of color due to analytes as low as 50 parts per million. These gas-detecting threads could be used in medical, workplace, military, and rescue environments.
Researchers have converted metallic gold into a two-dimensional semiconductor and customized the material atom-by-atom on boron nitride nanotubes. Two-dimensional semiconductors are promising materials for quantum computing, future electronics, and optical devices.
Researchers have converted metallic gold into a two-dimensional semiconductor and customized the material atom-by-atom on boron nitride nanotubes. Two-dimensional semiconductors are promising materials for quantum computing, future electronics, and optical devices.
