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Electron microscopy, while reliable, is an expensive, slow, and inefficient technique for thorough size distribution characterization of both mono- and polydisperse colloidal nanoparticles. If rapid in-situ characterization of colloid…

We study the effects of droplet ordering in initial optical transmittance through polymer dispersed liquid crystal (PDLC) films prepared in the presence of an electrical field. The experimental data are interpreted by using a theoretical…

Materials Science · Physics 2009-11-10 A. D. Kiselev , O. V. Yaroshchuk , L. Dolgov

We experimentally studied the spatial coherence of random laser emission from dye solutions containing nanoparticles. The spatial coherence, measured in a double-slit experiment, varied significantly with the density of scatterers and the…

Optics · Physics 2017-03-30 Brandon Redding , Michael A. Choma , Hui Cao

The vortex matter in bulk type-II superconductors serves as a prototype system for studying the random pinning problem in condensed matter physics. Since the vortex lattice is embedded in an atomic lattice, small angle neutron scattering…

Materials Science · Physics 2011-03-29 Xi Wang , Helen A. Hanson , Xinsheng Sean Ling , Charles F. Majkrzak , Brian B. Maranville

Magnetic nanoparticles offer unique potential for various technological, biomedical, or environmental applications thanks to the size-, shape- and material-dependent tunability of their magnetic properties. To optimize particles for a…

Despite the widespread use of Scanning Transmission Electron Microscopy (STEM) for observing the structure of materials at the atomic scale, a detailed understanding of some relevant electron beam damage mechanisms is limited. Recent…

We propose a novel microlensing event search method that differs from either the traditional time domain method, astrometric microlensing, or the parallax microlensing method. Our method assumes that stars with nearly identical "genes" -…

Astrophysics of Galaxies · Physics 2024-11-05 Qi Guo , Leyao Wei , Wentao Luo , Shurui Lin , Qinxun Li , YiFu Cai , Di He , Qingqing Wang , Ruoxi Yang

Control over the properties of nanoparticles obtained by laser ablation in liquids is experimentally demonstrated via modulation of the beam intensity profile on the target. Mask projection scheme was used with either a copper laser…

Mesoscale and Nanoscale Physics · Physics 2009-07-08 P. G. Kuzmin , G. A. Shafeev

Rayleigh scattering has shown powerful abilities to study electron resonances of nanomaterials regardless of the specific shapes. In analogy to Rayleigh scattering, here we demonstrate that edge optical scattering from two-dimensional (2D)…

Mesoscale and Nanoscale Physics · Physics 2018-04-04 Huaiyi Ding , Yiyun Dong , Sijia Li , Nan Pan , Yi Luo , Xiaoping Wang

Electron energy loss spectroscopy (EELS) has been established as a powerful analytical technique for investigating the oxidation state, band structure, and dielectric properties of materials with exceptional spatial resolution. Inspired by…

Hyperspectral 3D imaging aims to acquire both depth and spectral information of a scene. However, existing methods are either prohibitively expensive and bulky or compromise on spectral and depth accuracy. In this work, we present Dispersed…

Image and Video Processing · Electrical Eng. & Systems 2024-03-26 Suhyun Shin , Seokjun Choi , Felix Heide , Seung-Hwan Baek

We investigate the morphology and size distribution of satellite droplets resulting from the interaction of a freely falling water droplet with a swirling airstream of different strengths by employing shadowgraphy and deep-learning-based…

The article deals with the analysis of color distribution in noctilucent clouds (NLC) in the sky based on multi-wavelength (RGB) CCD-photometry provided with the all-sky camera in Lovozero in the north of Russia (68.0 deg N, 35.1 deg E)…

Atmospheric and Oceanic Physics · Physics 2017-09-27 Oleg S. Ugolnikov , Alexey A. Galkin , Sergey V. Pilgaev , Alexey V. Roldugin

We find exact conditions for the enhancement or suppression of internal and/or scattered fields and the determination of their spatial distribution or angular momentum through the combination of simple fields. The incident fields can be…

Optics · Physics 2015-06-16 Benjamin Hourahine , Francesco Papoff

The long-range action of surface-enhanced Raman scattering (SERS) is probed via distance-dependent measurements of molecular Raman spectra. To this end, identical SERS substrates composed of irregular silver nanoisland arrays were covered…

Materials Science · Physics 2015-06-12 V. I. Kukushkin , A. B. Van'kov , I. V. Kukushkin

Consider a ultraviolet (UV) scattering communication system where the position of the transmitter is fixed and the receiver can move around on the ground. To obtain the link gain effectively and economically, we propose an algorithm based…

Signal Processing · Electrical Eng. & Systems 2019-04-09 Difan Zou , Zhengyuan Xu , Chen Gong

"Spin noise spectroscopy" (SNS) is a powerful optical technique for probing electron and hole spin dynamics that is based on detecting their intrinsic and random fluctuations while in thermal equilibrium, an approach guaranteed by the…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 Luyi Yang , P. Glasenapp , A. Greilich , D. R. Yakovlev , M. Bayer , S. A. Crooker

Aggregation and settling are crucial phenomena that involve particulate systems. For particle sizes of millimetre and above, there are reasonable accurate predicting tools. However for smaller particle sizes, there appears to be a void in…

Fluid Dynamics · Physics 2016-01-15 D D Liyanage , Rajika J K A Thamali , A A K Kumbalatara , J A Weliwita , S Witharana

Nanoparticles grown in reactive plasmas and nanodusty plasmas gain high interest from basic science and technology. One of the great challenges of nanodusty plasmas is the in-situ diagnostic of the nanoparticle size and refractive index.…

Plasma Physics · Physics 2017-05-03 Florian Kirchschlager , Sebastian Wolf , Franko Greiner , Sebastian Groth , Aaron Labdon

Wet particle separation is widely used in mineral processing and plastic recycling to separate mixtures of particulate materials into further usable fractions due to density differences. This work presents efforts aiming to numerically…

Fluid Dynamics · Physics 2017-07-28 Darius Markauskas , Harald Kruggel-Emden