نتایج جستجو برای: uniform nanoparticles

تعداد نتایج: 216803  

2014
Sumaira Ashraf Mariyam Asghar Chatha Wardah Ejaz Hussnain Ahmed Janjua Irshad Hussain

Lysozyme, an antibacterial enzyme, was used as a stabilizing ligand for the synthesis of fairly uniform silver nanoparticles adopting various strategies. The synthesized particles were characterized using UV-visible spectroscopy, FTIR, dynamic light scattering (DLS), and TEM to observe their morphology and surface chemistry. The silver nanoparticles were evaluated for their antimicrobial activi...

Journal: :Journal of Polymer Science 2022

Crystallization-driven self-assembly (CDSA) was employed for the preparation of monodisperse cationic cylindrical nanoparticles with controllable sizes, which were subsequently explored their effect on antibacterial activity and mechanical properties nanocomposite hydrogels. Poly(ɛ-caprolactone)-block-poly(methyl methacrylate)-block-poly[2-(tert-butylamino) ethyl methacrylate] (PCL-b-PMMA-b-PTA...

Journal: :Nanoscale 2012
Dong Wook Kim Seong Sik Shin In Sun Cho Sangwook Lee Dong Hoe Kim Chan Woo Lee Hyun Suk Jung Kug Sun Hong

Zn(2)SnO(4) nanoparticles (NPs) with a narrow size distribution were synthesized by a simple hydrothermal route by controlling the crystallization process. The average size of NPs was 8 nm, and this was attributed to the formation of a hydroxy carbonate compound as an intermediate phase, which was demonstrated by the structural and elemental analyses. The fine size and visible-transparency of t...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2004
Chaoyang Jiang Sergiy Markutsya Vladimir V Tsukruk

Nanoscale uniform films containing gold nanoparticle and polyelectrolyte multilayer structures were fabricated by the using spin-assembly or spin-assisted layer-by-layer (SA-LbL) deposition technique. These SA-LbL films with a general formula [Au/(PAH-PSS)nPAH]m possessed a well-organized microstructure with uniform surface morphology and high surface quality at a large scale (tens of micromete...

2015
Chaowei Feng Xinchang Pang Yanjie He Yihuang Chen Guangzhao Zhang Zhiqun Lin

2016
Haley Marks Po-Jung Huang Samuel Mabbott Duncan Graham Jun Kameoka Gerard Coté

Conjugation of aptamers and their corresponding analytes onto plasmonic nanoparticles mediates the 13 formation of nanoparticle assemblies: molecularly bound nanoclusters which cause a measurable change in the 14 colloid’s optical properties. In this paper the optimization of a surface enhanced Raman spectroscopy (SERS) 15 competitive binding assay is presented utilizing plasmonic ‘target’ and ...

2008
Zhengquan Li Yong Zhang Shan Jiang

Near-infrared (NIR)-to-Visible upconversion fluorescent nanoparticles emit visible light upon NIR-light excitation, and are well suited for bioimaging, compared to the commonly used downconversionfluorescentmaterials.Thesenanoparticleshave advantages such as minimum photodamage to living organisms, weak background fluorescence, high detection sensitivity, and high light-penetration depth in tis...

2007
C. Favazza H. Krishna R. Sureshkumar R. Kalyanaraman

Robust nanomanufacturing methodologies are crucial towards realizing simple and cost-effective products. Here we discuss nanofabrication of ordered metal nanoparticles through pulsed-laser-induced self-organization. When ultrathin metal films are exposed to short laser pulses, spontaneous pattern formation results under appropriate conditions. Under uniform laser irradiation two competing modes...

2012
Q. Hu H. Wu L. Zhang H. Fong M. Tian

Rubber composite fibers containing silver nanoparticles with high morphological stability were prepared through combination of electrospinning and in-situ chemical crosslinking. The composite fibers included those of Ag/polybutadiene rubber (BR), Ag/polyisobutylene-isoprene rubber (IIR), and Ag/silicon rubber (SiR). During the study, Ag nanoparticles (Ag NPs) were first generated through reduci...

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