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Sustainable rosin acid ester as internal electron donors in Ziegler-Natta catalysts for synthesis of isotactic polypropylene with high melt flow rate
Bio-derived rosin acid esters internal electron donors Ziegler-Natta catalyst polypropylene polymerization
2023/12/11
In this contribution, novel bio-derived rosin acid ester compounds have been developed and used as internal electron donors to prepare MgCl2?supported titanium catalysts for propylene polymerization. ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Random phase approximation for the mean-field electron gas （3）
平均场 电子气 随机相位近似
2023/11/29
Random phase approximation (RPA) was proposed by Bohm and Pines in four seminal papers during 1951-1953 to describe the correlation of fermions, namely the correction to the Hartree-Fock theory. While...
Electron Compensation Effect Suppressed Silver Ion Release and Contributed Safety of Au@Ag Core-Shell Nanoparticles
Au@Ag core-shell electron compensation safety biomedical application
2023/6/21
Silver nanoparticles (Ag NPs) have promising plasmonic properties, however, they are rarely used in biomedical applications because of their potent toxicity. Herein, an electron compensation effect fr...
The way electrons interact with photons of light is a key part of many modern technologies, from lasers to solar panels to LEDs. But the interaction is inherently a weak one because of a major mismatc...
The mysterious changes in phases of matter – from solid to liquid and back again – have fascinated Eun-Ah Kim since she was in lower elementary school in South Korea. Without cold drinking water readi...
An LHC quadrupole whose beam screen had been coated with a fine layer of carbon displayed minimal heat load in comparison to other magnets, constituting a promising step in eliminating electron clouds...
Though they are discrete particles, water molecules flow collectively as liquids, producing streams, waves, whirlpools, and other classic fluid phenomena.
Not so with electricity. While an electric c...
Holding the right material at the right angle, Cornell researchers have discovered a strategy to switch the magnetization in thin layers of a ferromagnet – a technique that could eventually lead to th...
Physicists find direct evidence of strong electron correlation in a 2D material for the first time（图）
二维材料 强电子 相关性 非常规超导性
2023/6/7
In recent years, physicists have discovered materials that are able to switch their electrical character from a metal to an insulator, and even to a superconductor, which is a material in a friction-f...
MIT.nano receives grant to acquire focused ion beam scanning electron microscope（图）
聚焦离子束 扫描电子显微镜 双束纳米制造平台
2023/6/9
The VELION FIB-SEM, a next-generation dual-beam nanofabrication platform located in MIT.nano, will become a permanent part of the facility’s characterization capabilities, thanks in part to a Major Re...
When scientists needed to visualize the structure of the spike protein, which coronaviruses use to infiltrate human cells, they turned to cryo-electron microscopy. One of the most powerful imaging too...
Overcoming the limitations of scanning electron microscopy with AI
efficient super resolution imaging SEM AI
2021/8/10
A team develops a highly efficient super-resolution imaging based on deep learning.
In 2016, physicist J.C. Séamus Davis discovered an elusive state of quantum matter in the cuprates, which are copper oxide materials laced with other atoms. That launched a new sub-field in the study ...
青岛大学电子信息学院单福凯教授课题组在微电子领域权威期刊IEEE Electron Device Letters发表高水平研究论文（图）
青岛大学电子信息学院 单福凯 微电子 IEEE Electron Device Letters
2022/2/13
近日，青岛大学电子信息学院单福凯教授课题组在微电子器件研究领域取得重要进展，研究成果在微电子领域权威期刊IEEE Electron Device Letters上发表。一维金属氧化物纳米纤维由于其独特的优势，在场效应晶体管集成方面具有广阔的应用前景。静电纺丝工艺由于其大规模制备和较低的成本，被认为是最具优势的纤维制备工艺。然而，静电纺丝制备的纳米纤维之间，以及纤维与衬底之间由于简单松散的堆叠，这会...
New Paper Published in Nature Communications titled, “Exact exchange-correlation potentials from ground-state electron densities”
Published titled Exact potentials electron densities
2019/10/10
The quest for accurate exchange-correlation functionals has long remained a grand challenge in density functional theory (DFT), as it describes the many-electron quantum mechanical behavior through a ...