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相关论文: Nanoparticle Size Distribution Quantification: Res…

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Nanosized particles of $\omega$ phase in a $\beta$-Ti alloy were investigated by small-angle X-ray scattering using synchrotron radiation. We demonstrated that the particles are spontaneously weakly ordered in a three-dimensional cubic…

Four kinds of magic-size CdS clusters and two different regular CdS quantum dots have been studied by x-ray total scattering technique and pair distribution function method. Results for the regular CdS quantum dots could be modelled as a…

介观与纳米尺度物理 · 物理学 2018-06-11 Lei Tan , Alston J Misquitta , Andrei Sapelkin , Le Fang , Rory M Wilson , Baowei Zhang , Tingting Zhu , Frank S Riehle , Shuo Han , Kui Yu , Martin T Dove

Nanocrystalline samples of pristine capped and uncapped zinc sulphide were synthesized via the sol-gel technique. The nanocrystallinity of the samples were confirmed by the X-ray diffraction technique, where size of the particle size…

材料科学 · 物理学 2023-04-27 Samiran Mandal , Sk Irsad Ali , Subhamay Pramanik , Atis Chandra Mandal

Magnetic small-angle neutron scattering (SANS) is ideally suited to provide direct, reciprocal-space information of long-wavelength magnetic modulations, such as helicoids, solitons, merons, or skyrmions. SANS of such structures in thin…

强关联电子 · 物理学 2022-11-14 Grace L. Causer , Alfonso Chacon , André Heinemann , Christian Pfleiderer

The determination of particle size by dynamic light scattering uses the Stokes-Einstein relation, which can break down for nanoscale objects. Here we employ a molecular dynamics simulation of fully solvated 1-5 nm carbon nanoparticles for…

流体动力学 · 物理学 2016-09-07 S. V. Koniakhin , I. E. Eliseev , I. N. Terterov , A. V. Shvidchenko , E. D. Eidelman , M. V. Dubina

The article explores optical properties of nanostructures containing spherical gold nanoparticles of various radii. We explore the particle radius as a criterion to select a permittivity model aimed at describing optical absorption spectra…

We study the light scattered from randomly rough, one-dimensional self-affine fractal silver surfaces with nanoscale lower cutoff, illuminated by s- or p-polarized Gaussian beams a few microns wide. By means of rigorous numerical…

无序系统与神经网络 · 物理学 2009-11-07 J. A. Sanchez-Gil , J. V. Garcia-Ramos , E. R. Mendez

Simplified silica (Zeosil 1165 MP) and SBR (140k carrying silanol end-groups) nanocomposites have been formulated by mixing of a reduced number of ingredients with respect to industrial applications. The thermo-mechanical history of the…

Resonant inelastic X-ray scattering (RIXS) has become an important scientific tool. Nonetheless, conventional high-resolution RIXS measurements (<100 meV), especially in the soft x-ray range, require large and low-throughput grating…

材料科学 · 物理学 2020-06-22 Daniel J. Higley , Hirohito Ogasawara , Sioan Zohar , Georgi L. Dakovski

X-ray diffraction studies of nanoporous gold face the poorly understood diffraction scenario where large coherent crystals are riddled with nanoscale holes. Theoretical considerations derived in this study show that the ligament size of the…

材料科学 · 物理学 2017-12-27 Matthias Graf , Bao-Nam Dinh Ngô , Jörg Weissmüller , Jürgen Markmann

By using scattering in near field techniques, a microscope can be easily turned into a device measuring static and dynamic light scattering, very useful for the characterization of nanoparticle dispersions. Up to now, microscopy based…

光学 · 物理学 2015-05-13 D. Brogioli , D. Salerno , V. Cassina , F. Mantegazza

Due to their large coherent scattering cross section, diamond nanoparticles (DNPs) are considered as a promising candidate material for a new neutron reflector. For investigation of scattering cross sections of packed samples, we have…

仪器与探测器 · 物理学 2020-07-17 Kenji Mishima , Toshiya Otomoa , Kazutaka Ikeda , Hidetoshi Ohshita

We present a comprehensive analysis of the X-ray observations obtained from \xmm\, and \chandra\, for a sample of bona-fide Compact Symmetric Objects (CSOs) to investigate their X-ray emission properties. Ultimately, we obtain 32 effective…

高能天体物理现象 · 物理学 2025-02-04 Ying-Ying Gan , Su Yao , Tan-Zheng Wu , Hai-Ming Zhang , Jin Zhang

A simple, yet effective method of controlling the size and size distributions of nanoparticles produced as a result of laser ablation of target material is presented. The method employs the presence of physical boundaries on either sides of…

等离子体物理 · 物理学 2019-08-27 Kaushik Choudhury , Rajesh K. Singh , Prasoon Kumar , Mukesh Ranjan , Atul Srivastava , Ajai Kumar

Two types of homogeneous surface nanobubble populations, created by different means, are analyzed statistically on both their sizes and spatial positions. In the first type (created by droplet-deposition, case A) the bubble size R is found…

流体动力学 · 物理学 2010-01-06 Bram M. Borkent , Holger Schoenherr , Gerard Le Caer , Benjamin Dollet , Detlef Lohse

We demonstrate that a simple silver coated ball lens can be used to accurately measure the entire distribution of radiative transition rates of quantum dot nanocrystals. This simple and cost-effective implementation of Drexhage's method…

Well-separated mercury sulfide (HgS) nanocrystals are synthesized by a wet chemical route. Transmission electron microscopy studies show that nanocrystals are nearly spherical in shape with average size of 9 nm. Grazing angle X-ray…

材料科学 · 物理学 2011-11-15 A. K. Mahapatra , A. K. Dash

The condensation of biomolecules into biomolecular condensates via liquid-liquid phase separation (LLPS) is a ubiquitous mechanism that drives cellular organization. To enable these functions, biomolecules have evolved to drive LLPS and…

生物大分子 · 定量生物学 2020-03-04 Erik W. Martin , Jesse B. Hopkins , Tanja Mittag

Aiming at spherical and monodisperse silver nanoparticles with diameters up to 100 nm, the potential of heterogeneous nucleation of silver particles was explored. Gold seed particles, mainly produced with a spark discharge generator, were…

材料科学 · 物理学 2014-06-25 Simon Zihlmann , Felix Lüönd , Johanna K. Spiegel

The flexibility and versatility of nanoassembled plasmonic structures provide platforms for mesoscale tunable optical modulation. Our recently developed model for these nanoassembled plasmonic structures is composed of a dielectric…

光学 · 物理学 2024-12-31 Md. Imran Khan , Sayantani Ghosh , Arnold D. Kim