Dual-mode sensing platform based on colloidal gold functionalized porous silicon

2010 ◽  
Vol 97 (15) ◽  
pp. 153125 ◽  
Author(s):  
Yang Jiao ◽  
Dmitry S. Koktysh ◽  
Nsoki Phambu ◽  
Sharon M. Weiss
Keyword(s):  
Porous Silicon ◽  
Colloidal Gold ◽  
Dual Mode ◽  
Sensing Platform

Dual Detection Platform with Refractive Index and SERS Sensing Based on Colloidal Gold Functionalized Porous Silicon Substrates

2011 ◽  
Vol 1301 ◽  
Author(s):  
Yang Jiao ◽  
Dmitry S. Koktysh ◽  
Sharon M. Weiss
Keyword(s):  
Porous Silicon ◽  
Colloidal Gold ◽  
Infrared Region ◽  
Silicon Substrates ◽  
Molecular Fingerprinting ◽  
Molecular Binding ◽  
Sensing Platform ◽  
Surface Enhanced Raman ◽  
Dual Detection ◽  
Enhanced Raman Scattering

ABSTRACTWe demonstrate a dual-mode sensing platform based on porous silicon (PSi) substrates coated with colloidal gold (Au) nanoparticles (NPs). This Au-PSi composite structure supports both molecular fingerprinting via surface enhanced Raman scattering (SERS) and quantification of molecular binding via reflectance measurements. Reflectance shifts of 7-10 nm in the infrared region were observed in the case of adsorbing benzenethiol or antioxidant glutathione molecules on the surface of Au NPs. Subsequent SERS measurements showed unique identification for both molecules and provided a < 1 μM and < 1 mM detection resolution for benzenethiol and glutathione, respectively.

A dual-mode fluorometric/colorimetric sensor for Cu2+ detection based on hybridized carbon dots and gold–silver core–shell nanoparticles

The Analyst ◽  
2019 ◽  
Vol 144 (14) ◽  
pp. 4250-4257 ◽  
Author(s):  
Yuqing Chen ◽  
Yawen Lian ◽  
Mengna Huang ◽  
Lin Wei ◽  
Lehui Xiao
Keyword(s):  
Aqueous Solution ◽  
Carbon Dots ◽  
Core Shell ◽  
Dual Mode ◽  
Ag Nps ◽  
Shell Nanoparticles ◽  
Sensing Platform ◽  
Gold Silver ◽  
Core Shell Nanoparticles ◽  
Silver Core

A fluorometric and colorimetric dual mode sensing platform based on hybridized carbon dots (Cdots) and gold–silver core–shell nanoparticles (Au@Ag NPs) has been established for the sensitive detection of trace Cu2+ ions in aqueous solution.

Dual-Mode Sensing Platform for Electrochemiluminescence and Colorimetry Detection Based on a Closed Bipolar Electrode

2021 ◽  
Author(s):  
Yue Hu ◽  
Liang Zhu ◽  
Xuecui Mei ◽  
Jinsen Liu ◽  
Zhongping Yao ◽  
...  
Keyword(s):  
Bipolar Electrode ◽  
Dual Mode ◽  
Sensing Platform

Porous silicon photoluminescence modification by colloidal gold nanoparticles: Plasmonic, surface and porosity roles

2014 ◽  
Vol 146 ◽  
pp. 247-255 ◽  
Author(s):  
M.B. de la Mora ◽  
J. Bornacelli ◽  
R. Nava ◽  
R. Zanella ◽  
J.A. Reyes-Esqueda
Keyword(s):  
Gold Nanoparticles ◽  
Porous Silicon ◽  
Colloidal Gold ◽  
Colloidal Gold Nanoparticles

Au@carbon dot nanoconjugates as a dual mode enzyme-free sensing platform for cholesterol

2017 ◽  
Vol 5 (27) ◽  
pp. 5425-5432 ◽  
Author(s):  
Eepsita Priyadarshini ◽  
Kamla Rawat
Keyword(s):  
Dual Mode ◽  
Carbon Dot ◽  
Sensing Platform ◽  
Average Size

In this report, we present a novel application of gold–carbon dot nanoconjugates (Au@CDs) of an average size of around 12.6 nm as a sensor for the detection of cholesterol.

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