نتایج جستجو برای: ag nanoparticle

تعداد نتایج: 73391  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2011
Kwan Kim Kuan Soo Shin

The nature of "hot spots" in surface-enhanced Raman scattering (SERS) and the novel fabrication of Ag thin films for efficient SERS measurements are the main focus of this review. By using 4-aminobenzenthiol or 1,4-phenylenediisocyanide molecules we can characterize the nanogap formed by a metal nanoparticle and a flat metal substrate, or the gap between two spherical metal nanoparticles. These...

2013
Md. Jahangir Alam

Ag-Au alloy nanoparticles with tunable shape and composition were prepared by a replacement reaction between Ag nanoparticles and chloroauric acid at one hundred and fifty degree celsius temperature under oilbath heating. The replacement reaction between silver nanostructures and chloroauric acid solution has recently been demonstrated as a versatile method for generating Au-Ag alloy nanostruct...

Journal: :Nanoscale Research Letters 2021

Abstract One-dimensional Ag nanostructure-based networks have garnered significant attention as next-generation transparent conductive materials. nanofibers (NFs) with high aspect ratios decrease the number density required for percolation; hence, they form qualitatively superior films. This study reports a novel method rapidly fabricating NFs via Pt nanoparticle-assisted H 2 -free reduction of...

Journal: :international journal of nano dimension 0
m. riazian department of engineering, tonekabon branch, islamic azad university, tonekabon, iran. r. ramezani ayandegan institute of higher education, tonekabon, iran.

in this paper, a novel method of producing bi-metallic alloy nanoparticles at low temperatures using hydrogen bombardment of thin films, deposited on glass substrates, is introduced. optical and morphological characteristics of the nanoparticles were extensively studied for various conditions of plasma treatment, such as plasma power density, temperature, duration of hydrogen bombardment, thick...

Journal: :journal of nanostructures 2012
z. naemi m. jafar-tafreshi m. fazli

agal2o3 nanocomposite were synthesized by solution combustion technique using ammonium carbonate as a new fuel under simultaneous combustion of alumina and silver particles condition. samples prepared with different amount of silver, were characterized by xrd, bet, sem and optical absorption measurements. xrd analysis was used to determine the change in phase and size of the synthesized nanopar...

Journal: :Physical chemistry chemical physics : PCCP 2016
Jeremy G Smith Prashant K Jain

Self-assembled monolayer (SAM) formation of alkanethiols on nanoparticle surfaces is an extensively studied surface reaction. But the nanoscale aspects of the rich microscopic kinetics of this reaction may remain hidden due to ensemble-averaging in colloidal samples, which is why we investigated in real-time how alkanethiol SAMs form on a single Ag nanoparticle. From single-nanoparticle traject...

Journal: :Optics express 2016
Jae-Phil Shim Sang-Bae Choi Duk-Jo Kong Dong-Ju Seo Hyung-Jun Kim Dong-Seon Lee

Ag nanoparticles are embedded in intentionally etched micro-circle p-GaN holes by means of a thermal agglomeration process to enhance the light absorption efficiency in InGaN/GaN multi-quantum-well (MQW) solar cells. The Ag nanoparticles are theoretically and experimentally verified to generate the plasmon light scattering and the localized field enhancement near the MQW absorption layer. The e...

2015
Go Kawamura Hayato Ohmi Wai Kian Tan Zainovia Lockman Hiroyuki Muto Atsunori Matsuda

ABSTRACT Dye-sensitized solar cells composed of a photoanode of Ag nanoparticle (NP)-deposited TiO2 nanotube (TNT) arrays were fabricated. The TNT arrays were prepared by anodizing Ti films on fluorine-doped tin oxide (FTO)-coated glass substrates. Efficient charge transportation through the ordered nanostructure of TNT arrays should be carried out compared to conventional particulate TiO2 elec...

Journal: :Nanoscale 2013
Yue Liu Cheng Zhi Huang

Understanding the localized surface plasmon resonance (LSPR) of differently shaped plasmonic nanoparticles benefits screening and designing highly sensitive single nanoparticle sensors. Herein, in the present work, we systematically investigated the shape-dependent scattering light colours and refractive index (RI) sensitivity of Ag nanoparticles (AgNPs) at the single nanoparticle level using c...

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