Category Physics

This display shows a neutrino event candidate in the MicroBooNE detector. Credit: MicroBooNE

It detected its first neutrinos on Oct. 15, marking the beginning of detailed studies of these fundamental particles whose properties could be linked to dark matter, matter’s dominance over antimatter in the universe and the evolution of the entire cosmos since the Big Bang.

The MicroBooNE detector – a so-called time projection chamber filled with 170 tons of liquid argon – spotted neutrinos that were generated when proton beams from Fermilab’s accelerator complex slammed into a target a few hundred yards away from the detector.

Researchers from Department of Energy’s SLAC National Accelerator Laboratory are developing tools for the acquisition of the experiment’s data and for the reconstruction of...

A high-quality mixed-organic-cation perovskite (MA)x(FA)1−xPbI3 is prepared from a phase-pure non-stoichiometric intermediate complex (FAI)1−x−PbI2. The phase-pure (FAI)1−x−PbI2 probably facilitates homogenous nucleation and modulates the growth kinetics during the crystallization of (MA)x(FA)1−xPbI3. This strategy can be expected to pave the way for the development of mixed-organic-cation perovskite solar cells.

NIMS researchers have developed the world’s first method to fabricate high-quality perovskite materials capable of utilizing long-wavelength sunlight of 800 nm or longer...

Optical absorption edge versus free electron density for the ZnSnN2 films. The calculated dependence of absorption on free electron density is also shown for the two extreme cases of cation ordered (blue dashed line) and fully cation disordered (red solid line) ZnSnN2. The calculations are performed using k·P band structures fitted to the DFT results close to the Γ point. The square points correspond to samples grown under less metal-rich conditions and triangular points to those grown under more metal-rich conditions.

University of Liverpool has demonstrated a new semiconductor material made from abundant elements which can be “tuned” for use in solar cells instead of rare elements...

A new device provides immediate results and will be used for diagnosis of diabetes within low-income populations. What makes this development unique is that it is adaptable to the cell phone and gives results in a few seconds, avoiding the annoying use of needles.

In other words, it is a cartridge adaptable to the mobile phone that will record whether a compound is present in saliva, which becomes visible if the patient has diabetes. The project is planned to be completed in 2 years, “We wanted a device which could identify a biomarker in a sample of saliva, and it had to emit fluorescent light so a cell phone camera could records it,” explains Rite Palomares.

The multidisciplinary team united scientific experts to work in enzyme technology to make visible this marker and use an anal...