Results 41 to 50 of about 19,767 (230)

Laser Engineering of HfN‐Based Nanoparticles for Safe NIR‐I Photothermal and X‐ray Enhancing Cancer Therapies

Advanced Functional Materials, EarlyView.
In this study, we produced HfN‐based nanoparticles via femtosecond laser ablation in acetone. The nanoparticles exhibit a red‐shifted plasmonic resonance in the NIR‐I window, colloidal stability after coating with polyethyleneglycol, and excellent biocompatibility. The photothermal and X‐ray sensitization therapeutic effects were demonstrated for tumor
Julia S. Babkova, Ivan V. Zelepukin, Lyubov V. Gorelik, Anton L. Popov, Andrei I. Pastukhov, Gleb V. Tikhonowski, Maxim S. Savinov, Danil D. Kolmanovich, Nikita A. Pivovarov, Alina Yu. Kapitannikova, Anton A. Popov, Anna S. Sogomonyan, Vsevolod A. Skribitsky, Aziz B. Mirkasymov, Andrei V. Kabashin, Sergey M. Deyev   +15 more
wiley   +1 more source

Photoluminescence of hexagonal boron nitride: effect of surface oxidation under UV-laser irradiation

, 2008
We report on the UV laser induced fluorescence of hexagonal boron nitride (h-BN) following nanosecond laser irradiation of the surface under vacuum and in different environments of nitrogen gas and ambient air.
Andrei V. Kanaev, Arnaud, Berzina, Blase, Brown, Bäuerle, Carlisle, Carson, Chen, Chen, Davies, Demetrios Anglos, Era, Furthmüller, Geick, Grinyaev, Hirayama, Hoffman, Jean-Pierre Michel, Jean-Pierre Petitet, Jia, Kanaev, Katzir, Kawaguchiaki, Larach, Larach, Leapman, Leapman, Li, Liu, Lopatin, Luc Museur, Lukomskii, MacNaughton, Mansour, Mshima, Solozhenko, Tarrio, Taylor, Watanabe, Watanabe, Wu, Xu, Yao, Yao, Zunger   +45 more
core   +1 more source

Better Band Gaps with Asymptotically Corrected Local Exchange Potentials [PDF]

, 2016
We formulate a spin-polarized van Leeuwen and Baerends (vLB) correction to the local density approximation (LDA) exchange potential [Phys. Rev. A 49, 2421 (1994)] that enforces the ionization potential (IP) theorem following Stein et al. [Phys. Rev. Lett.
Harbola, Manoj, Hemanadhan, M., Johnson, D., Johnson, Duane, Mookerjee, Abhijit, Signh, Prashant   +5 more
core   +5 more sources

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Synthesis of Cubic Boron Nitride

Journal of the Ceramic Association, Japan, 1970
Cu5Sn, Cu5Sn8,Mg9Sn91合金あるいは Mg 金属の1部と, 六方晶 BN の4部の混合物を白金チューブに充填し, 改良ガードル型高圧装置を用いて, 最大約 80kbar, 2200℃, 30分間の条件下で処理した。不純物を酸で分離後, 合成立方晶 BN をデバイ・シェラーX線回折図形, 硬度試験などで同定した。例えば Cu5Sn 合金の場合, zinc-blende 構造をもつ立方晶 BN を約 1000℃, 40kbarの条件下で合成した。結晶の大きさは数0～ 数100μ であり,色相は灰色,暗黒色,白色などであった。六方晶〓立方晶 BN 平衡線は Wentorf の実験的平衡1線の延長上に存在した。Mg9Sn91合金と Mg 金属の場合, おのおの約 1000℃, 32kbar,
Masumi USHIO, Hajime SAITO, Shuichi NAGAO   +2 more
openaire   +2 more sources

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

Sintering of low-melting glass powders and glass-abrasive composites [PDF]

Science of Sintering, 2003
Sintering of glass powders in Na2O-B2O3-SiO2 and PbO-ZnO-B2O3-SiO2 systems as well as of their mixtures has been studied. The process of sintering is shown to change because of crystallization of the glass of the PbO-ZnO-B2O3-SiO2 system.
Shilo A.E., Bondarev E.K., Kukharenko S.A.   +2 more
doaj   +1 more source

Broadband Transmission Properties of cBN-Si Interfaces

IEEE Photonics Journal, 2021
We analyze the real and imaginary parts of cBN in a broad wavelength range both 0.5-1.0 µm and 1.36-10 µm respectively, and use both Fresnel theory and Meep software package to calculate the transmittance and reflectance.
Xicheng Xiong, Chun Jiang, Quan Xie
doaj   +1 more source

Dimension Engineering of Single-Layer PtN$_2$ with the Cairo Tessellation

, 2019
Single-layer PtN$_2$ exhibits an intriguing structure consisting of a tessellation pattern called the Cairo tessellation of type 2 pentagons, which belong to one of the existing 15 types of convex pentagons discovered so far that can monohedrally tile a ...
Huang, Wenjiang, Lakamsani, Sreeharsha, Liu, Lei, Price, Chance, Wang, Duo, Zhuang, Houlong L.   +5 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source