نتایج جستجو برای: functionalized nanoparticles

تعداد نتایج: 124700  

2017
Roberta D'Agata Pasquale Palladino Giuseppe Spoto

Gold nanoparticles (AuNPs) exhibit unique properties that can be modulated through a tailored surface functionalization, enabling their targeted use in biochemical sensing and medical diagnostics. In particular, streptavidin-modified AuNPs are increasingly used for biosensing purposes. We report here a study of AuNPs surface-functionalized with streptavidin-biotinylated oligonucleotide, focussi...

Journal: :iranian journal of biotechnology 2014
shakeel ahmed ansari rukhsana satar dibya sundar panda syed kashif zaidi sandesh chibber

context: in recent years, nanotechnology has opened up several new avenues of extraordinary biomedical potential by modulating metals into their nanosize leading to significant improvement in their chemical, physical and optical properties. introduction: the advanced fabrication techniques have been exploited to modify nanostructured materials. the functionalized nanoscaled fibers display vario...

2016
Shengwei Tan Lei Wang Hang Liu Hongwen Wu Quanjun Liu

The nanopore sensor as a high-throughput and low-cost technology can detect single nanoparticle in solution. In the present study, the silicon nitride nanopores were fabricated by focused Ga ion beam (FIB), and the surface was functionalized with 3-aminopropyltriethoxysilane to change its surface charge density. The positively charged nanopore surface attracted negatively charged nanoparticles ...

2017
Nancy Elizabeth González-Sierra Luz del Carmen Gómez-Pavón Gerardo Francisco Pérez-Sánchez Arnulfo Luis-Ramos Plácido Zaca-Morán Jesús Manuel Muñoz-Pacheco Fernando Chávez-Ramírez

A comparative study on the sensing properties of a tapered optical fiber pristine and functionalized with the palladium nanoparticles to hydrogen and volatile organic compounds (VOCs), is presented. The sensor response and, response/recovery times were extracted from the measurements of the transient response of the device. The tapered optical fiber sensor was fabricated using a single-mode opt...

Journal: :Nanoscale 2011
Narahari Mahanta Suresh Valiyaveettil

Contamination of water from nanomaterials will be an emerging problem in the future due to incorporation of nanomaterials in many commercial products and improper disposal of waste materials. In this report, electrospun polyvinyl alcohol nanofibers (PVA NFs) with diameters ranging between 300 and 500 nm were used for the extraction of nanosized contaminants from the aqueous environment. To obta...

2014
Meesbah Jiwaji Mairi E. Sandison Julien Reboud Ross Stevenson Rónán Daly Gráinne Barkess Karen Faulds Walter Kolch Duncan Graham Mark A. Girolami Jonathan M. Cooper Andrew R. Pitt

INTRODUCTION Gene therapy continues to grow as an important area of research, primarily because of its potential in the treatment of disease. One significant area where there is a need for better understanding is in improving the efficiency of oligonucleotide delivery to the cell and indeed, following delivery, the characterization of the effects on the cell. METHODS In this report, we compar...

2016
Haruka Yamaguchi Makoto Tsuchimochi Kazuhide Hayama Tomoyuki Kawase Norio Tsubokawa

We sought to develop dual-modality imaging probes using functionalized silica nanoparticles to target human epidermal growth factor receptor 2 (HER2)-overexpressing breast cancer cells and achieve efficient target imaging of HER2-expressing tumors. Polyamidoamine-based functionalized silica nanoparticles (PCSNs) for multimodal imaging were synthesized with near-infrared (NIR) fluorescence (indo...

2015
Zejing Xu Yejia Li Boyu Zhang Tapas Purkait Alina Alb Brian S. Mitchell Scott M. Grayson Mark J. Fink

Water-soluble silicon nanoparticles were synthesized by grafting PEG polymers onto functionalized silicon nanoparticles with distal alkyne or azide moieties. The surface-functionalized silicon nanoparticles were produced in one step from the reactive high-energy ball milling (RHEBM) of silicon wafers with a mixture of either 5-chloro-1-pentyne in 1-pentyne or 1,7 octadiyne in 1-hexyne to afford...

2012
Yongkun Yang Peter Burkhard

BACKGROUND Gold nanoparticles are useful tools for biological applications due to their attractive physical and chemical properties. Their applications can be further expanded when they are functionalized with biological molecules. The biological molecules not only provide the interfaces for interactions between nanoparticles and biological environment, but also contribute their biological func...

Journal: :Chemical communications 2012
Kisun Yoon Daeyeon Lee Jin Woong Kim Jaeyun Kim David A Weitz

We present a method to asymmetrically functionalize dimer particles with gold nanoparticles. Our method enables the fabrication of asymmetrically functionalized dimer particles on a large scale.

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