Carbon Dots Prepared by Hydrothermal Treatment of Dopamine as an Effective Fluorescent Sensing Platform for the Label-Free Detection of Iron(III) Ions and Dopamine

2013 ◽  
Vol 19 (22) ◽  
pp. 7243-7249 ◽  
Author(s):  
Konggang Qu ◽  
Jiasi Wang ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Hydrothermal Treatment ◽  
Carbon Dots ◽  
Label Free ◽  
Fluorescent Sensing ◽  
Sensing Platform ◽  
Label Free Detection

scholarly journals An Aptamer-Based Capacitive Sensing Platform for Specific Detection of Lung Carcinoma Cells in the Microfluidic Chip

Biosensors ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 98 ◽  
Author(s):  
Ngoc-Viet Nguyen ◽  
Chun-Hao Yang ◽  
Chung-Jung Liu ◽  
Chao-Hung Kuo ◽  
Deng-Chyang Wu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Lung Carcinoma ◽  
Early Stage ◽  
A549 Cells ◽  
Microfluidic Channel ◽  
Electrical Impedance Spectroscopy ◽  
Label Free ◽  
Early Stage Lung Cancer ◽  
Sensing Platform ◽  
Label Free Detection

Improvement of methods for reliable and early diagnosis of the cellular diseases is necessary. A biological selectivity probe, such as an aptamer, is one of the candidate recognition layers that can be used to detect important biomolecules. Lung cancer is currently a typical cause of cancer-related deaths. In this work, an electrical sensing platform is built based on amine-terminated aptamer modified-gold electrodes for the specific, label-free detection of a human lung carcinoma cell line (A549). The microdevice, that includes a coplanar electrodes configuration and a simple microfluidic channel on a glass substrate, is fabricated using standard photolithography and cast molding techniques. A procedure of self-assembly onto the gold surface is proposed. Optical microscope observations and electrical impedance spectroscopy measurements confirm that the fabricated microchip can specifically and effectively identify A549 cells. In the experiments, the capacitance element that is dominant in the change of the impedance is calculated at the appropriate frequency for evaluation of the sensitivity of the biosensor. Therefore, a simple, inexpensive, biocompatible, and selective biosensor that has the potential to detect early-stage lung cancer would be developed.

Nitrogen-doped carbon dots derived from electrospun carbon nanofibers for Cu(ii) ion sensing

2019 ◽  
Vol 43 (4) ◽  
pp. 1812-1817 ◽  
Author(s):  
Yang Li ◽  
Zhicheng Liu ◽  
Lu Bai ◽  
Yaqing Liu
Keyword(s):  
Carbon Nanofibers ◽  
Carbon Dots ◽  
Nitrogen Doped ◽  
Fluorescent Sensing ◽  
Ion Sensing ◽  
Sensing Platform ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon dots were synthesized via the chemical breakdown of electrospun polyacrylonitrile-based carbon nanofibers and employed as a fluorescent sensing platform.

Cobalt oxyhydroxide nanoflake based fluorescence sensing platform for label-free detection of DNA

The Analyst ◽  
2016 ◽  
Vol 141 (15) ◽  
pp. 4719-4724 ◽  
Author(s):  
Yaqing Chang ◽  
Zhe Zhang ◽  
Huiqing Liu ◽  
Nan Wang ◽  
Jilin Tang
Keyword(s):  
Fluorescence Quenching ◽  
Label Free ◽  
Quenching Mechanism ◽  
Fluorescence Sensing ◽  
Single Stranded Dna ◽  
Cobalt Oxyhydroxide ◽  
Sensing Platform ◽  
Label Free Detection ◽  
Fluorescence Quenching Mechanism ◽  
Coooh Nanoflakes

In this study, we investigated the interaction of cobalt oxyhydroxide (CoOOH) nanoflakes with DNA and their fluorescence quenching mechanism of a FAM-labeled single-stranded DNA (ssDNA) probe.

scholarly journals Nanostructured Aptamer-Functionalized Black Phosphorus Sensing Platform for Label-Free Detection of Myoglobin, a Cardiovascular Disease Biomarker

2016 ◽  
Vol 8 (35) ◽  
pp. 22860-22868 ◽  
Author(s):  
Vinod Kumar ◽  
Jack R. Brent ◽  
Munish Shorie ◽  
Harmanjit Kaur ◽  
Gaganpreet Chadha ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Black Phosphorus ◽  
Label Free ◽  
Disease Biomarker ◽  
Sensing Platform ◽  
Label Free Detection

A label-free “SEF-FRET” fluorescent sensing platform for ultrasensitive DNA detection based on AgNPs SAMs

Talanta ◽  
2019 ◽  
Vol 205 ◽  
pp. 120072 ◽  
Author(s):  
Wei He ◽  
Xiangying Sun ◽  
Bin Liu ◽  
Jiangshan Shen
Keyword(s):  
Dna Detection ◽  
Label Free ◽  
Fluorescent Sensing ◽  
Sensing Platform
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