See also stories tagged with Femtosecond
In a world-first, researchers from the Femtosecond Spectroscopy Unit at the Okinawa Institute of Science and Technology (OIST) have directly observed the evolution of the elusive dark excitons in atomically thin materials, ...
The field of ultrafast magnetism explores how flashes of light can manipulate a material's magnetization in trillionths of a second. In the process called all-optical switching (AOS), a single laser pulse of several femtoseconds ...
In a step toward making ultra-bright X-ray sources more widely available, an international collaboration led by the University of Michigan—with experiments at the U.K.'s Central Laser Facility—has mapped key aspects of electron ...
Metal oxides are abundant in nature and central to technologies such as photocatalysis and photovoltaics. Yet, many suffer from poor electrical conduction, caused by strong repulsion between electrons in neighboring metal ...
Graphene is an extraordinary material—a sheet of interlocking carbon atoms just one atom thick that is stable and extremely conductive. This makes it useful in a range of areas, such as flexible electronic displays, highly ...
Researchers have made a groundbreaking discovery about hemoglobin, the protein responsible for carrying oxygen throughout the body. The findings challenge decades of scientific assumptions and provide new insights into fundamental ...
Ferroelectrics are seen as promising candidates for the electronics of tomorrow. An experiment at the world's largest X-ray laser—the European XFEL in Schenefeld near Hamburg—now shows that their properties can be controlled ...
Scientists have long speculated that polaritons—hybrids of light and matter—could be harnessed to control photochemistry. Now, researchers at the City University of New York (CUNY) have shown that these fleeting states can ...
Valence electrons, located in the outermost shell of an atom, play an important role in driving chemical reactions and forming bonds with other atoms.
Whether in solar cells or in the human eye, whenever certain molecules absorb light, the electrons within them shift from their ground state into a higher-energy, excited state. This results in the transport of energy and ...
