A novel Label-free electrochemical immunesensor for ultrasensitive detection of LT toxin using Prussian Blue@Gold nanoparticles composite as a signal amplification

2021 ◽  
pp. 107887
Author(s):  
Mohammad Mahdi Habibi ◽  
Seyed AliMirhosseini ◽  
Sharareh Sajjadi ◽  
Amir Homayoun Keihan
Keyword(s):  
Gold Nanoparticles ◽  
Prussian Blue ◽  
Signal Amplification ◽  
Ultrasensitive Detection ◽  
Label Free

A novel label free long non-coding RNA electrochemical biosensor based on green l-cysteine electrodeposition and Au–Rh hollow nanospheres as tags

RSC Advances ◽  
2015 ◽  
Vol 5 (64) ◽  
pp. 51990-51999 ◽  
Author(s):  
Fei Liu ◽  
Guiming Xiang ◽  
Liqun Zhang ◽  
Dongneng Jiang ◽  
Linlin Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Single Wall Carbon Nanotubes ◽  
Complex Signal ◽  
Ultrasensitive Detection ◽  
Label Free ◽  
Hollow Nanospheres ◽  
Non Coding Rna ◽  
Long Non Coding Rna

lncRNA biosensor based on single-wall carbon nanotubes wrapped with Au–Rh hollow nanospheres (Au/Rh-HNP@SWCNT) complex signal amplification and an l-Cys Au nano-film provided ultrasensitive detection for the nuclear paraspeckle assembly transcript 1 (NEAT1).

scholarly journals Optimization of the Electrodeposition of Gold Nanoparticles for the Application of Highly Sensitive, Label-Free Biosensor

Biosensors ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 50 ◽  
Author(s):  
Hao-Chun Chiang ◽  
Yanyan Wang ◽  
Qi Zhang ◽  
Kalle Levon
Keyword(s):  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Aqueous Electrolyte ◽  
Label Free ◽  
Reduction Step ◽  
Glucose Biosensors ◽  
Highly Sensitive ◽  
Amperometric Glucose Biosensors ◽  
Aunp Surface

A highly sensitive electrochemical biosensor with a signal amplification platform of electrodeposited gold nanoparticle (AuNP) has been developed and characterized. The sizes of the synthesized AuNP were found to be critical for the performance of biosensor in which the sizes were dependent on HAuCl4 and acid concentrations; as well as on scan cycles and scan rates in the gold electro-reduction step. Systematic investigations of the adsorption of proteins with different sizes from aqueous electrolyte solution onto the electrodeposited AuNP surface were performed with a potentiometric method and calibrated by design of experiment (DOE). The resulting amperometric glucose biosensors was demonstrated to have a low detection limit (> 50 μM) and a wide linear range after optimization with AuNP electrodeposition.

Gold nanoparticle-based exonuclease III signal amplification for highly sensitive colorimetric detection of folate receptor

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3055-3058 ◽  
Author(s):  
Xinjian Yang ◽  
Zhiqiang Gao
Keyword(s):  
Gold Nanoparticles ◽  
Small Molecule ◽  
Signal Amplification ◽  
Colorimetric Assay ◽  
Folate Receptor ◽  
Colorimetric Detection ◽  
Label Free ◽  
Exonuclease Iii ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

By combining terminal protection of small molecule (folate)-capped DNA probes, exonuclease III signal amplification and gold nanoparticles, we developed a simple and label-free colorimetric assay for highly sensitive detection of folate receptor.

An aptamer-based chemiluminescence method for ultrasensitive detection of platelet-derived growth factor by cascade amplification combining rolling circle amplification with hydroxylamine-enlarged gold nanoparticles

2015 ◽  
Vol 7 (20) ◽  
pp. 8786-8792 ◽  
Author(s):  
Lu-Yan Yao ◽  
Xiao-Qian Yu ◽  
Yan-Jun Zhao ◽  
Ai-Ping Fan
Keyword(s):  
Gold Nanoparticles ◽  
Growth Factor ◽  
Signal Amplification ◽  
Rolling Circle Amplification ◽  
Platelet Derived Growth Factor ◽  
Ultrasensitive Detection ◽  
Chemiluminescence Method ◽  
Rolling Circle ◽  
Chemiluminescence Assay ◽  
Cascade Amplification

An ultrasensitive and selective chemiluminescence assay for PDGF-BB detection using the powerful signal amplification capability of RCA and hydroxylamine-amplified AuNPs.

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