Quantitative detection of biomolecules (eg DNA and proteins) has become increasingly
important in a variety of fields, including medical diagnostics, food safety, and anti …

We report a novel sandwich type assay for the optical detection of DNA using multi-
component crosslinked Au nanoparticle aggregates. In this design, a DNA bridged multi …

A Fe2O3@ Au core/shell nanoparticle-based electrochemical DNA biosensor was
developed for the amperometric detection of Escherichia coli (E. coli). Magnetic Fe2O3@ Au …

A method for synthesizing composite nanoparticles with a gold shell, an Fe3O4 inner shell,
and a silica core has been developed. The approach utilizes positively charged amino …

The contamination of heavy metals (eg, Hg, Pb, Cd and As) poses great risks to the
environment and human health. Rapid and simple detection of heavy metals of considerable …

A novel method is described for the highly effective amplifying electrochemical response of
DNA based on oligonucleotides functionalized with Au/Fe3O4 nanocomposites by the aid of …

Herein we report the development of a simple, rapid, homogeneous, and sensitive detection
system for DNA based on the scattering properties of silver-amplified gold nanoparticle …

Taking advantage of recent developments in the field of metallic nanoparticle-based
colorimetric DNA detection and in the field of in vitro selection of functional DNA/RNA that …

Background In situation like diagnosis of clinical and forensic samples there exists a need
for highly sensitive, rapid and specific DNA detection methods. Though conventional DNA …

Driven by the urgent need to detect trace heavy metal ions in various real water samples,
this article demonstrates for the first time an electrochemical biosensor based on DNA …