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Hexagonally arranged Au nano particles (NPs) exhibiting a broad size distribution ranging from 30 nm to 80 nm with a Gaussian shape were deposited on Si substrates and irradiated with Ar+ and Ga+ ions with various energies from 20 to 350…

We have studied the quenched random disorder (QRD) effects created by aerosil dispersion in octylcyanobiphenyl (8CB) liquid crystal (LC) using Atomic Force Microscopy (AFM) technique. Gelation process in the 8CB+aerosil gels yields a QRD…

Soft Condensed Matter · Physics 2019-08-30 M. Ramazanoglu , R. Salci

Surface lattice resonance (SLR) lasers, where gain is supplied by a thin film active material and the feedback comes from multiple scattering by plasmonic nanoparticles, have shown both low threshold lasing and tunability of the angular and…

We have investigated the optically measurable properties of single evaporating microdroplets of suspensions containing up-converting luminescent nanoparticles (Gd2O3:Er3+), levitated in a linear electrodynamic trap. These microdroplets…

We numerically examine the spatial evolution of the structure of coherent and partially coherent laser beams, including the optical vortices, propagating in turbulent atmospheres. The influence of beam fragmentation and wandering relative…

Optics · Physics 2015-05-19 G. P. Berman , V. N. Gorshkov , S. V. Torous

We report on the observation of both stable dissipative solitons and noise-like pulses with the presence of strong Raman scattering in a relatively short all-normal-dispersion Yb-doped fiber laser. We show that Raman scattering can be…

Optics · Physics 2015-10-28 Daojing Li , Deyuan Shen , Lei Li , Hao Chen , Dingyuan Tang , Luming Zhao

The structure and interactions of coated silica nanoparticles have been studied in water using molecular dynamics simulations. For 5 nm diameter amorphous silica nanoparticles we studied the effects of varying the chain length and grafting…

Soft Condensed Matter · Physics 2014-05-22 K. Michael Salerno , Ahmed E. Ismail , J. Matthew D. Lane , Gary S. Grest

A microscopic model of surface roughness (SR) scattering in inversion layers of bulk-MOSFETs based on Ando's linear model is proposed. Taking into account the stochastic nature of roughness position induced by discontinuity of the spatial…

Mesoscale and Nanoscale Physics · Physics 2026-04-27 Nobuyuki Sano

A nanoscopy technique that can characterize light-matter interactions with ever increasing spatial resolution and signal-to-noise ratio (SNR) is desired for spectroscopy at molecular levels. Photoinduced force microscopy (PiFM) with…

Applied Physics · Physics 2018-10-17 Mohsen Rajaei , Mohammad Ali Almajhadi , Jinwei Zeng , H. Kumar Wickramasinghe

The present article describes the size induced changes in the structural arrangement of intrinsic defects present in chemically synthesized ZnO nanoparticles of various sizes. Routine X-ray diffraction (XRD) and Transmission Electron…

Materials Science · Physics 2011-09-15 S K Chaudhuri , Manoranjan Ghosh , D Das , A K Raychaudhuri

We report narrow quadrupolar surface lattice resonances (SLRs) under normal incidence, and the observation, for the first time, of the band reversal effect of SLRs supported by a vertical metal-insulator-metal nanograting, which is embedded…

Optics · Physics 2021-11-17 Xinyu Fang , Lei Xiong , Jianping Shi , Hongwei Ding , Guangyuan Li

In this paper, Second-order NLO properties of ZnO and AZO thin films from experimental results are discussed. Measurements were a single wavelength of 1.064 micrometers using the standard rotational Maker fringes technique in a transmission…

Applied Physics · Physics 2023-04-28 Calford Odhiambo Otieno

This work explores the antimicrobial efficacy of ZnO nanoparticles (NPs) films with varying microstructure, crystallographic orientation and surface roughness. Thin films with different microstructures were obtained by varying precursor…

Materials Science · Physics 2024-07-04 Imroi El-Habib , Sarah Dine , Alex Lemarchand , Christine Mielcarek , Mamadou Traore , Rabah Azouani

We investigate the influence of oxygen annealing on the room temperature optical and scintillation properties of CaWO$_4$ single crystals that are being produced for direct Dark Matter search experiments. The applied annealing procedure…

Detailed investigation of static and dynamic laser light scattering has been attempted in this work both theoretically and experimentally based on dilute water dispersions of two different homogenous spherical particles, polystyrene latexes…

Biological Physics · Physics 2007-05-23 Yong Sun

The low efficiency of Raman spectroscopy can be overcome by placing the active molecules in the vicinity of scatterers, typically rough surfaces or nanostructures with various shapes. This surface-enhanced Raman scattering (SERS) leads to…

A new method based on the combination of small-anglescattering, reverse Monte Carlo simulations, and an aggregate recognition algorithm is proposed to characterize the structure of nanoparticle suspensions in solvents and polymer…

We report on the extraction of the higher twist contributions to F_2 and R = sigma_L/sigma_T from the global NLO and NNLO QCD fits to lepton nucleon scattering data over a wide range of Q^2. The NLO fits require both target mass and higher…

High Energy Physics - Experiment · Physics 2015-06-25 U. K. Yang , A. Bodek

An intriguing athermal uniform elongation and accelerated radial shrinkage in amorphous SiOx nanowire (a-SiOx NW) as purely induced by uniform electron beam (e-beam) irradiation were in-situ investigated in transmission electron microscope.…

Mesoscale and Nanoscale Physics · Physics 2018-09-24 Jiangbin Su , Xianfang Zhu

Four-wave mixing in the form of Bragg scattering (BS) has been predicted to enable quantum noise less frequency conversion by analytic quantum approaches. Using a semi-classical description of quantum noise that accounts for loss and…

Optics · Physics 2017-03-24 Søren M. M. Friis , Lasse Mejling , Karsten Rottwitt