Extreme pressure experiments and powerful supercomputing have enabled scientists to solve a decades-old puzzle about the fundamental properties of the widely used metal lithium.
Researchers at Tokyo Institute of Technology have reported a new catalyst composed of silica, a rhodium complex and tertiary amines(term1) that significantly boosts hydrosilylation reactions.
Capillary discharge plasma jets are created by a large current that passes through a low-density gas in what is called a capillary chamber. The gas ionizes and turns into plasma. When plasma expands in the capillary chamber due to arc energy heating, plasma ejects from the capillary nozzle forming the plasma jet. This week in Review of Scientific Instruments, a study examines how the dimensions of the capillary producing the plasma affect the jet's length.
Australia's fastest camera has revealed the time it takes for molecules to break apart. The experimental research, conducted by Griffith University's Centre for Quantum Dynamics, aims to help in the design of new molecules for materials science or drug discovery.
Frequent measurement of a quantum system's state can either speed or delay its collapse, effects called the quantum Zeno and quantum anti-Zeno effect. But so too can 'quasimeasurements' that only poke the system and garner no information about its state.
Scientists at the University of Vienna have created a new structure by encapsulating a single layer of fullerene molecules between two graphene sheets. Buckyball sandwiches combine fullerenes and graphene. This structure allows to study the dynamics of the trapped molecules down to atomic resolution using scanning transmission electron microscopy. They report observing diffusion of individual molecules confined in the two-dimensional space and even find evidence for the rotation of isolated fullerenes within the structure.
Using femtosecond visible and terahertz (THz) pulses as external perturbations, scientists at Tokyo Institute of Technology and Kyoto University's Institute for Integrated Cell-Material Sciences (iCeMS) have investigated the second harmonic generation effect in photoexcited BiCoO3. Driven by the THz pulse, this research highlights the importance of orbital excitation in the Co3+ ion and provides clues for improving the performance of nonlinear optical phenomena in nonlinear crystals on the femtosecond time scale.
Researchers in Melbourne, Australia, have developed a compound that draws moisture from the air and splits it into oxygen and hydrogen. The hydrogen can be captured as a clean fuel source.
The classic method for studying how electrons interact with matter is by analyzing their scattering through thin layers of a known substance. This happens by directing a stream of electrons at the layer and analyzing the subsequent deviations in the electrons' trajectories. But researchers in Switzerland have devised a way to examine the movement of low-energy electrons that can adversely impact electronic systems and biological tissue, discussed in this week's The Journal of Chemical Physics.
Equipment used in cancer treatment requires a strong, monochromatic source of radiation to produce hard X-rays. Other similar radiation sources find applications in nuclear waste processing. To design devices that steadily emit a specific type of radiation, physicists use a special kind of crystal, referred to as a crystalline undulator. In a study published in EPJ D, a team has demonstrated the ability to control radiation emissions from a particle traveling through such a device.