source:phys.orgResearchers at Northeastern have discovered a new quantum phenomenon in a specific class of materials, called antiferromagnetic insulators, that could yield new ways of powering 'spintronic' and other technological devices of the future.The discovery illuminates 'how heat flows in a magnetic insulator, [and] how [researchers] can detect that heat flow,' says Gregory Fiete, a physics professor at Northeastern and co-author of the research. The novel effects, published in Nature Physics this week and demonstrated experimentally, were observed by combining lanthanum...
Release time:
2022
-
05
-
24
viewed：17
source:azomBackgroundPhotocatalysis provides a long-term solution for converting solar energy into high-value chemical fuels. Over the last few decades, a lot of effort has gone into discovering and designing better photocatalysts. Despite this, they have poor light absorption and responsiveness, simple recombination of photogenerated carriers, and a slow surface catalytic reaction rate.To improve the performance of photocatalysts, a variety of solutions have been proposed including doping heteroatoms, adding cocatalysts, and creating heterojunctions. These enhancements frequently make catalys...
Release time:
2022
-
05
-
23
viewed：3
Generating ultra-violet lasers with near-infrared light through “domino upconversion” of nanoparticles source：eurekalertStrong and coherent ultraviolet light emission devices have enormous medical and industrial application potential, but generating ultraviolet light emission in an effective way has been challenging. Recently, a collaborative research team co-led by researchers from City University of Hong Kong (CityU) developed a new approach to generate deep-ultraviolet lasing through a 'domino upconversion' process of nanoparticles using near-infrared light, which is commonly u...
Release time:
2022
-
05
-
20
viewed：4
source:natureAbstractRare-earth titanates form very fragile liquids that can be made into glasses with useful optical properties. We investigate the atomic structure of 83TiO2-17Nd2O3 glass using pair distribution function (PDF) analysis of X-ray and neutron diffraction with double isotope substitutions for both Ti and Nd. Six total structure factors are analyzed (5 neutron + 1 X-ray) to obtain complementary sensitivities to O and Ti/Nd scattering, and an empirical potential structure refinement (EPSR) provides a structural model consistent with the experimental measurements. Glass density is ...
Release time:
2022
-
05
-
19
viewed：3