Enhancing the Photoelectrochemical Response of DNA Biosensors Using Wrinkled Interfaces

2018 ◽  
Vol 10 (37) ◽  
pp. 31178-31185 ◽  
Author(s):  
Sudip Saha ◽  
Yuting Chan ◽  
Leyla Soleymani
Keyword(s):  
Dna Biosensors ◽  
Photoelectrochemical Response

scholarly journals Review of Electrochemical DNA Biosensors for Detecting Food Borne Pathogens

Sensors ◽  
2019 ◽  
Vol 19 (22) ◽  
pp. 4916 ◽  
Author(s):  
Qiaoyun Wu ◽  
Yunzhe Zhang ◽  
Qian Yang ◽  
Ning Yuan ◽  
Wei Zhang
Keyword(s):  
Pathogen Detection ◽  
Low Cost ◽  
Electrochemical Techniques ◽  
Ease Of Use ◽  
Detection Methods ◽  
Future Research ◽  
Dna Biosensors ◽  
Food Borne Pathogens ◽  
Chip Technology ◽  
Food Borne

The vital importance of rapid and accurate detection of food borne pathogens has driven the development of biosensor to prevent food borne illness outbreaks. Electrochemical DNA biosensors offer such merits as rapid response, high sensitivity, low cost, and ease of use. This review covers the following three aspects: food borne pathogens and conventional detection methods, the design and fabrication of electrochemical DNA biosensors and several techniques for improving sensitivity of biosensors. We highlight the main bioreceptors and immobilizing methods on sensing interface, electrochemical techniques, electrochemical indicators, nanotechnology, and nucleic acid-based amplification. Finally, in view of the existing shortcomings of electrochemical DNA biosensors in the field of food borne pathogen detection, we also predict and prospect future research focuses from the following five aspects: specific bioreceptors (improving specificity), nanomaterials (enhancing sensitivity), microfluidic chip technology (realizing automate operation), paper-based biosensors (reducing detection cost), and smartphones or other mobile devices (simplifying signal reading devices).

Approaches to label-free flexible DNA biosensors using low-temperature solution-processed InZnO thin-film transistors

2014 ◽  
Vol 55 ◽  
pp. 99-105 ◽  
Author(s):  
Joohye Jung ◽  
Si Joon Kim ◽  
Keun Woo Lee ◽  
Doo Hyun Yoon ◽  
Yeong-gyu Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Low Temperature ◽  
Thin Film Transistors ◽  
Label Free ◽  
Dna Biosensors ◽  
Solution Processed ◽  
Temperature Solution

scholarly journals Characteristics of P-Type and N-Type Photoelectrochemical Biosensors: A Case Study for Esophageal Cancer Detection

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1065
Author(s):  
Joseph-Hang Leung ◽  
Hong-Thai Nguyen ◽  
Shih-Wei Feng ◽  
Sofya B. Artemkina ◽  
Vladimir E. Fedorov ◽  
...  
Keyword(s):  
Esophageal Cancer ◽  
Cancer Cells ◽  
Carrier Transport ◽  
X Ray Diffraction ◽  
Photoelectrochemical Response ◽  
Carrier Separation ◽  
Human Esophageal Cancer ◽  
P Type ◽  
Esophageal Cancer Cells

P-type and N-type photoelectrochemical (PEC) biosensors were established in the laboratory to discuss the correlation between characteristic substances and photoactive material properties through the photogenerated charge carrier transport mechanism. Four types of human esophageal cancer cells (ECCs) were analyzed without requiring additional bias voltage. Photoelectrical characteristics were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), UV–vis reflectance spectroscopy, and photocurrent response analyses. Results showed that smaller photocurrent was measured in cases with advanced cancer stages. Glutathione (L-glutathione reduced, GSH) and Glutathione disulfide (GSSG) in cancer cells carry out redox reactions during carrier separation, which changes the photocurrent. The sensor can identify ECC stages with a certain level of photoelectrochemical response. The detection error can be optimized by adjusting the number of cells, and the detection time of about 5 min allowed repeated measurement.

Enhanced plasmonic photoelectrochemical response of Au sandwiched WO3 photoanodes

2017 ◽  
Vol 172 ◽  
pp. 361-367 ◽  
Author(s):  
Kim Hang Ng ◽  
Lorna Jeffery Minggu ◽  
Nurul Akmal Jaafar ◽  
Khuzaimah Arifin ◽  
Mohammad Bin Kassim
Keyword(s):  
Photoelectrochemical Response

Surface regeneration and reusability of label-free DNA biosensors based on weak polyelectrolyte-modified capacitive field-effect structures

2019 ◽  
Vol 126 ◽  
pp. 510-517 ◽  
Author(s):  
Thomas S. Bronder ◽  
Arshak Poghossian ◽  
Max P. Jessing ◽  
Michael Keusgen ◽  
Michael J. Schöning
Keyword(s):  
Field Effect ◽  
Label Free ◽  
Dna Biosensors ◽  
Free Dna ◽  
Surface Regeneration

scholarly journals Photoelectrochemical response of poly(3-hexylthiophene) and poly(2,3-diethylquinoxaline-5,8-diyl) in aqueous media

2011 ◽  
Vol 161 (11-12) ◽  
pp. 1150-1153 ◽  
Author(s):  
Keisuke Saito ◽  
Junpei Kuwabara ◽  
Takaki Kanbara
Keyword(s):  
Aqueous Media ◽  
Photoelectrochemical Response
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