A highly sensitive and selective optical sensor for Pb2+ by using conjugated polymers and label-free oligonucleotides

2013 ◽  
Vol 39 (1) ◽  
pp. 231-235 ◽  
Author(s):  
Yan Lu ◽  
Xiang Li ◽  
Gongke Wang ◽  
Wen Tang
Keyword(s):  
Conjugated Polymers ◽  
Optical Sensor ◽  
Label Free ◽  
Highly Sensitive

scholarly journals Optical Monitoring of the Production Quality of Si-Nanoribbon Chips Intended for the Detection of ASD-Associated Oligonucleotides

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 147
Author(s):  
Kristina A. Malsagova ◽  
Tatyana O. Pleshakova ◽  
Vladimir P. Popov ◽  
Igor N. Kupriyanov ◽  
Rafael A. Galiullin ◽  
...  
Keyword(s):  
Production Quality ◽  
Autism Spectrum ◽  
Covalent Immobilization ◽  
Biological Macromolecules ◽  
Label Free ◽  
Raman Scattering Spectroscopy ◽  
Dna Oligonucleotides ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Gas-phase etching and optical lithography were employed for the fabrication of a silicon nanoribbon chip (Si-NR chip). The quality of the so-fabricated silicon nanoribbons (Si-NRs) was monitored by optical Raman scattering spectroscopy. It was demonstrated that the structures of the Si-NRs were virtually defect-free, meaning they could be used for highly sensitive detection of biological macromolecules. The Si-NR chips were then used for the highly sensitive nanoelectronics detection of DNA oligonucleotides (oDNAs), which represent synthetic analogs of 106a-5p microRNA (miR-106a-5p), associated with the development of autism spectrum disorders in children. The specificity of the analysis was attained by the sensitization of the Si-NR chip sur-face by covalent immobilization of oDNA probes, whose nucleotide sequence was complementary to the known sequence of miR-106a-5p. The use of the Si-NR chip was demonstrated to al-low for the rapid label-free real-time detection of oDNA at ultra-low (~10−17 M) concentrations.

Label-Free Highly Sensitive Hybrid Plasmonic Biosensor for the Detection of DNA Hybridization

2017 ◽  
Vol 35 (22) ◽  
pp. 4851-4858 ◽  
Author(s):  
Mohamed Farhat O. Hameed ◽  
Ahmed Samy Saadeldin ◽  
Essam M. A. Elkaramany ◽  
Salah S. A. Obayya
Keyword(s):  
Dna Hybridization ◽  
Label Free ◽  
Highly Sensitive

scholarly journals Highly sensitive and selective liquid crystal optical sensor for detection of ammonia

2017 ◽  
Vol 25 (12) ◽  
pp. 13549 ◽  
Author(s):  
Xiaofang Niu ◽  
Yuanbo Zhong ◽  
Rui Chen ◽  
Fei Wang ◽  
Dan Luo
Keyword(s):  
Liquid Crystal ◽  
Optical Sensor ◽  
Highly Sensitive

Fluorescent conjugated polymers based on thiocarbonyl quinacridone for sensing mercury ion and bioimaging

2014 ◽  
Vol 5 (10) ◽  
pp. 3396-3403 ◽  
Author(s):  
Yi Qu ◽  
Xinran Zhang ◽  
Yongquan Wu ◽  
Fuyou Li ◽  
Jianli Hua
Keyword(s):  
Conjugated Polymers ◽  
Mercury Ion ◽  
Highly Sensitive

Highly sensitive FRET-based thiocarbonyl quinacridone fluorescent conjugated polymers for the sensing and bioimaging of mercury ion have been developed.

scholarly journals Label-free single-molecule all-optical sensor

2008 ◽  
Author(s):  
Andrea M. Armani ◽  
Scott E. Fraser ◽  
Richard C. Flagan
Keyword(s):  
Single Molecule ◽  
Optical Sensor ◽  
Label Free ◽  
All Optical

scholarly journals Simulation and Analysis of Highly Sensitive MEMS Cantilever Designs for “in vivo Label Free” Biosensing

2014 ◽  
Vol 14 ◽  
pp. 85-92 ◽  
Author(s):  
Deep Kishore Parsediya ◽  
Jawar Singh ◽  
Pavan Kumar Kankar
Keyword(s):  
Label Free ◽  
Highly Sensitive

Target-induced structure switching of DNA for label-free and ultrasensitive electrochemiluminescent detection of proteins

2014 ◽  
Vol 50 (24) ◽  
pp. 3211-3213 ◽  
Author(s):  
Mengli Yang ◽  
Ying Chen ◽  
Yun Xiang ◽  
Ruo Yuan ◽  
Yaqin Chai
Keyword(s):  
Dna Structure ◽  
Label Free ◽  
Switching Strategy ◽  
Highly Sensitive ◽  
Label Free Detection ◽  
Exo Iii ◽  
Recycling Amplification ◽  
Structure Switching ◽  
Induced Structure

Highly sensitive and label-free detection of thrombin is achieved via a target-induced DNA structure switching strategy and Exo III-assisted recycling amplification.

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