Chinese researchers had achieved site- and spatial- selective integration of earth-abundant metal ions in semiconductor quantum dots (QDs) for efficient and robust photocatalytic H2 evolution from water.
A plasmonic spin-Hall nanograting structure that simultaneously detects both the polarization and phase singularities of the incident beam is reported. The nanograting is symmetry-breaking with different periods for the upper and lower parts, which enables the unidirectional excitation of the SPP depending on the topological charge of the incident beam. Additionally, spin-Hall meta-slits are integrated onto the grating so that the structure has a chiral response for polarization detection.
New research from the University of California, San Francisco (USCF) and City of Hope in the July 2020 issue of JNCCN--Journal of the National Comprehensive Cancer Network examines coverage trends for circulating tumor DNA testing, also known as gene sequencing of ctDNA or 'liquid biopsies.' The researchers found coverage rate rose from 0% to 38% in three years. The policies also increased in scope from 2017-2019, going from one cancer type to 12.
The HPTN 083 clinical trial showed that a pre-exposure prophylaxis (PrEP) regimen containing long-acting cabotegravir (CAB LA) injected once every 8 weeks was superior to daily oral tenofovir/emtricitabine (TDF/FTC) for HIV prevention among cisgender men and transgender women who have sex with men.
Researchers in the Cava Group at the Princeton University Department of Chemistry have demystified the reasons for instability in an inorganic perovskite. The source of thermodynamic instability in the halide perovskite cesium lead iodide (CsPbI3) is the inorganic cesium atom and its "rattling" behavior within the crystal structure.
Any uptake in electric vehicle use must be mirrored by the development of clean energy grids to mitigate both climate change and air pollution. That is the key finding of a new study by researchers at the Lawrence Berkeley National Laboratory, California, and Stanford University, California.
The protein PRC1, a telltale sign in many cancer types including prostate, ovarian, and breast cancer, act as a "viscous glue" during cell division, precisely controlling the speed at which two sets of DNA are separated as a single cell divides. The finding could explain why too much or too little PRC1 disrupts that process and causes genome errors linked to cancer.
Physicists at MIT have designed a quantum "light squeezer" that reduces quantum noise in an incoming laser beam by 15 percent. It is the first system of its kind to work at room temperature, making it amenable to a compact, portable setup that may be added to high-precision experiments to improve laser measurements where quantum noise is a limiting factor.
Utility-scale photovoltaics are the largest sector of the overall solar market within the US and the fastest-growing form of renewable power generation, and this fleet of utility-scale photovoltaic projects is relatively young and hasn't been operating long enough to establish a lengthy history of operational field service. In the Journal of Renewable and Sustainable Energy, researchers assess the performance of 411 utility-scale photovoltaic projects built within the U.S. from 2007 through 2016.
Thermoelectric devices, which use the temperature difference between the top and bottom of the device to generate power, offer some promise for harnessing naturally occurring energy. In Applied Physics Letters, authors tested one made up of a wavelength-selective emitter that constantly cools the device during the day using radiative cooling. As a result, the top of the device is cooler than the bottom, causing a temperature difference that creates constant voltage through day and night.