Results 81 to 90 of about 95,748 (273)

Studies of atomic scale diffusion by X-ray photon correlation spectroscopy

Diffusion Fundamentals, 2013
Although Quasielastic Neutron Scattering (QNS) has proven successful in investigating diffusive dy-namics at the atomic level in solid state physics, the limits for the diffusion coefficient are relativelylow. Therefore QNS is in general limited to measurements in the vicinity of the melting transition.Also, because of the specific scattering cross ...
Stana, Markus, Leitner, Michael, Ross, Manuel, Sepiol, Bogdan   +3 more
openaire   +3 more sources

Three‐dimensional Antimony Sulfide Based Flat Optics

Advanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang, Uwe Hübner, Anne Gärtner, Tao Chen, Joseph Köbel, Franka Jahn, Daniel Repp, Abhrodeep Dey, Henrik Schneidwind, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Matthias Zeisberger, Tanveer Ahmed Shaik, Astrid Bingel, Markus A. Schmidt, Jer‐Shing Huang, Ulf Peschel, Volker Deckert   +18 more
wiley   +1 more source

Nanoscale inhomogeneity of charge density waves dynamics in La2−xSrxNiO4

Scientific Reports, 2022
While stripe phases with broken rotational symmetry of charge density are known to emerge in doped strongly correlated perovskites, the dynamics and heterogeneity of spatial ordering remain elusive. Here we shed light on the temperature dependent lattice
Gaetano Campi, Antonio Bianconi, Boby Joseph, Shrawan Kr Mishra, Leonard Müller, Alexey Zozulya, Agustinus Agung Nugroho, Sujoy Roy, Michael Sprung, Alessandro Ricci   +9 more
doaj   +1 more source

A general perspective of the characterization and quantification of nanoparticles: Imaging, spectroscopic, and separation techniques [PDF]

, 2014
This article gives an overview of the different techniques used to identify, characterize, and quantify engineered nanoparticles (ENPs). The state-of-the-art of the field is summarized, and the different characterization techniques have been grouped ...
Anderson de la LLana, S., Anderson, I.S., Capitán Vallvey, L. F., Cecchini, R., Costa Fernández, J.M., Domínguez Meister, Santiago, Lapresta Fernández, A., Marco, María Pilar, Moreno Bondi, M.C., Salinas Castillo, A., Sánchez López, J.C.   +10 more
core   +3 more sources

Feasibility study of visibility-based X-ray photon correlation spectroscopy [PDF]

Acta Crystallographica Section A Foundations and Advances, 2014
When coherent X-rays impinge upon a disordered system, a grainy scattering pattern called speckle pattern is observed. If the system evolves with time, the corresponding speckle pattern also changes. Temporal changes in the speckle patterns therefore provide information on the dynamics of the system.
Ichiro Inoue, Yuya Shinohara, Akira Watanabe, Yoshiyuki Amemiya   +3 more
openaire   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Coherent X-ray measurement of step-flow propagation during growth on polycrystalline thin film surfaces

Nature Communications, 2019
Monitoring growth dynamics of crystalline thin materials progressively is crucial to understand the mechanism. Here, the authors develop a local step flow model to investigate the growth of C60 films on graphene coated over silicon substrates that ...
Randall L. Headrick, Jeffrey G. Ulbrandt, Peco Myint, Jing Wan, Yang Li, Andrei Fluerasu, Yugang Zhang, Lutz Wiegart, Karl F. Ludwig   +8 more
doaj   +1 more source

Layer dependent band dispersion and correlations using tunable Soft X-ray ARPES

, 2004
Soft X-ray Angle-Resolved Photoemission Spectroscopy is applied to study in-plane band dispersions of Nickel as a function of probing depth. Photon energies between 190 and 780 eV were used to effectively probe up to 3-7 layers.
, A Chainani, Cardona M., K Kobayashi, N Kamakura, Nielsen M. B., Plummer E. W., S Shin, Stoner E. C., T Tokushima, Tanuma S., Y Harada, Y Takata   +12 more
core   +1 more source

Coexisting Rashba/Dresselhaus Spin Splitting in Solution‐Processed Bournonite Films Using Circular Photogalvanic Effect

Advanced Functional Materials, EarlyView.
Circular photogalvanic effect measurements and first‐principles calculations reveal spin‐splitting states in solution‐processed bournonite films (CuPbSbS3) due to structural and bulk inversion asymmetry. The results provide experimental confirmation of coexisting Rashba and Dresselhaus spin‐splitting states in this non‐centrosymmetric chalcogenide ...
Aeron McConnell, Sasa Wang, Andrew Grieder, Yuan Ping, David B. Mitzi, Dali Sun   +5 more
wiley   +1 more source