"Science" (published 20220923) One week's paper guide

Compilation | Feng Weiwei

Science, 23 SEPTEMBER 2022, Volume 377 Issue 6613

"Science" September 23, 2022, Vol. 377, Issue 6613

Chemical Chemistry

Controlling The Nucleation and Growth Kinetics of Lead Halide Perovskite Quantum Dots

Control the nuclear and growth dynamics of halogen lead oligoia quantum dynamics

Author: quinten a. Akkerman, Tan P. T. Nguyen, Simon C. Boehme, Federico Montanarella, Dmitry N. Dirin, Philipp Wechslerfinn Beiglböck, Gabriele ROLF ERNI, Maksym V. KOVALKOVALKALKOLKOLALKOLALALAAAOAAOAAAAAAAAAAAAAAAAAAEAOAAEAAAEAAAAAAAAAAAAAAAAAEAAAEAEAAAAAAAAAAAAAAAAAAEAE case case case case caseE caseE hisEUA hisUA his hisUA his hisUA his hisE his hisE hisE hisE hisE hisA hisAAAAAAAAsed hisUAU hisU

Link:

https://www.science.org/doi/10.1126/sclence.abq3616

Summary:

Inorganic materials with more covalent bonds, such as cadmium cadmium, form uniform nanoparticles under rapid growth conditions, but perovskite, such as bromide lead (CSPBBR3), has more ions, and quickly grow to form a larger increase. Nano -granules.

The author controls the growth dynamics of nanoparticles by using the oxidation Sanxinya 膦, which is the soluble PBBR2 precursor of the oxidation Sanxinya, combined with cations- [PBBR3] monomer (solubility), and weakly matched with the crystal nucleus surface Essence

Use long -chain dual -sex lecithin to stabilize and high yield separation with nanoparticles between 3 and 13 nanometers. Four high -resolved excitement transitions were found in the ion and organic yang ions, which are related to the size of the restriction.

Abstract:

Inorganic materials with more covalent bonding, such as cadmium selenide, form uniform nanoparticles under fast growth conditions, but perovskites such as cesium lead bromide (CsPbBr3) are more ionic and grow rapidly to form larger nanoparticles. Akkerman et al. controlled the nanoparticles' growth kinetics by using trioctylphosphine oxide, which solubilized the PbBr2precursor, bound to the cation-[PbBr3] monomer (solute), and weakly coordinated to the crystal nuclei surfaces. Nanoparticles with diameters from 3 to 13 nanometers were stabilized and isolated in high yield with lecithin A Long-Chain Zwitterion. Four Well-Resolved Excition Exformations with Size-Dependent Confinement Erece Seen For Cesium As Well As Organic Cations.

Deterministic Fabrication of 3D/2D Perovskite Bilayer Stacks for Durable and Efficient Solar Cells

3D/2D perovskite double -layer stacking for durable and efficient solar cells

Author: Siraj Sidhik, Yafei Wangmichael de Siena, Reza Asadpour, Andrew J. TORMA, Tanguy Terlier, Kevin Ho, Aditha D. Mohite

Link:

https://www.science.org/doi/10.1126/science.abq7652 Abstract:

The growth of two -dimensional halogen osteoticization layer can improve the power conversion efficiency of solar cells on three -dimensional perovskite, but the rotation coating of these layers usually forms a non -uniform two -dimensional phase or only ultra -thin layer.

The author found that a solvent with an appropriate dielectric constant and the intensity of the donor can grow the thickness of the phase and the phase of the phase of the growth control on the 3D substrate without dissolving them. Under the continuous light of the relative humidity of 55 ° C and 65%, the solar cell maintains a peak power conversion efficiency of 24.5%within 2000 hours, and the degradation is lower than 1%.

Abstract:

Two-dimensional (2D) halide perovskite passivation layers grown on three-dimensional (3D) perovskite can boost the power conversion efficiency (PCE) of solar cells, but spin-coating of these layers usually forms heterogeneous 2D phases or only ultrathin layers. Sidhik et al. found that solvents with the appropriate dielectric constant and donor strength could grow phase-pure 2D phases of controlled thickness and composition on 3D substrates without dissolving them. Solar cells maintained a peak PCE of 24.5% for 2000 hours with less than 1% Degradation Under Continuous Light at 55 ° C and 65% Relacted Humidity.

Physics Quantum Physics Geophysics

Provably Efficient Machine Learning for Quantum Many-Body

Quantum multi -body problems can prove effective machine learning

Author: hsin-yuan huang, richard kueng, giacomo torlai, Victor v. Albert, and John Preskill

Link:

https://www.science.org/doi/10.1126/sclence.abk3333

Summary:

The nature of the prediction of strong interaction multi -body quantum system is well -known. One method is to use quantum computers, but at the current technological stage, the most interesting problem still cannot be touched.

The author explores a different technology: learning from the experimental data with classic machine learning, and then apply this knowledge to predict the physical properties of physical properties or classify the material phase of specific types of multi -body problems. The results show that under certain conditions, the algorithm has high calculation efficiency.

Abstract:

Predicting the properties of strongly interacting many-body quantum systems is notoriously difficult. One approach is to use quantum computers, but at the current stage of the technology, the most interesting problems are still out of reach. Huang et al. explored a different technique : using classical machine learning to learn from experimental data and then applying that knowledge to predict physical properties or classify phases of matter for specific types of many-body problems. The authors show that under certain conditions, the algorithm is computationally efficient.Water vapor injection Into the stratosphere by hunga tonga-hunga ha'apai

Tangjiahong Aha Apy Island volcan

Author: Holger Vomel, Stephanie Evan, and Matt Tully

Link:

https://www.science.org/doi/10.1126/sclence.abq2299

Summary:

In January 2022, the eruption of the volcanic flooding of the Degore's bottom volcanic flood was very violent, and its feather flow penetrated into the flat stratum. The author studied the on -site measurement results of the radio detector (meteorological balloon), and the results showed that the incident injected at least 50 grams of water vapor into the flat flow layer.

Because the volcano is underwater, the amount of water vapor in the development of the current flat stratosphere is very high, and unlike other large eruptions, it may increase the amount of water vapor in the global flat stratum more than 5%.

Abstract:

The eruption of the submarine volcano Hunga Tonga-Hunga Ha'apai in January of 2022 was so violent that its plume penetrated into the stratosphere. Vömel et al. studied in situ measurements by radiosondes (weather balloons), which showed that the event injected at least 50 teragrams of water vapor into the stratosphere. Because the volcano was underwater, the amount of water vapor in the developing stratospheric plume was high, and, unlike other large eruptions, it may have increased the amount of global stratospheric water vapor by more than 5%.

Climate and ecological climate ecology

LIMITED ClIMate Change Mitigation Potential Through Forestation of the Vast Dryland Regions

The potential of a large -scale dry area to relieve climate change is limited

Author: Shani Rohatyn, Dan Yakir, Eyal Rotenberg, And Yohay Carmel

Link:

https://www.science.org/doi/10.1126/science.abm9684 Abstract:

Some people suggest that forestry planting in the world is a way to slow down global warming, but how much hope is this actually? The author found that the benefits of climate change are small.

Although the dry land has considerable solid carbon potential, it can be used to reduce the amount of carbon dioxide in the atmosphere and reduce warming, but the reduction of anti -photos caused by afforestation will offset most of this effect. Therefore, although it is obviously important to plant trees, it cannot replace emission reduction.

Abstract:

Forestation of the global drylands has been suggested to be a way to decrease global warming, but how much promise does it actually have? Rohatyn et al. found that the climatic benefits are minor. Although drylands have considerable carbon sequestration potential, which could be used to lower the amount of carbon dioxide in the atmosphere and thereby slow warming, the reduction of albedo caused by forestation would counteract most of that effect. So, although forestation is clearly important, it cannot substitute for reducing emissions. —HJS

TERMITE SENSITIVITY to Temperator Affects Global Wood Decay Rates

The sensitivity of termites on temperature affects the decline of global wood

Author: Amy E. Zanne, Habacuccuc Flores-Moreno, Jeff R. Powell, William K. Cornwell, KEI-ICHI OKADA, Paul-Camilo Zalamea, ETC.

Link: https://www.science.org/doi/10.1126/science.abo3856

Summary:

The decomposition rate changes with changes in temperature and precipitation, partly because the effect of climate on decomposition of creatures. Although microorganisms are widely considered to be decomposed, animals such as insects also play a key role in tropical systems.

The author repeated a experiment in 133 locations around the world to quantify the changes in climate -related microbial and termites in wood decomposition. It was found that the climate affects the decomposition of microorganisms and termites, but the existence and activity of termites is more sensitive to temperature. Therefore, with the warming of the climate, termites may play a greater role in global wood decomposition.

Abstract:

Decomposition rates vary with temperature and precipitation, in part because of the effects of climate on decomposer organisms. Although microbes are widely recognized as decomposers, animals such as insects also play a key role in tropical systems. Zanne et al. replicated an experiment at 133 global sites to quantify climate-related variation in wood decomposition by both microbes and termites. Climate influenced both microbial and termite decomposition, but termite presence and activity were more sensitive to temperature. Termites may thus play a larger role in global wood decomposition as the climate warms. Edit | Fangyuan

Capture | Guo Gang

- END -