Short-wavelength ultraviolet dosimeters based on DNA nanostructure-modified graphene field-effect transistors

2021 ◽  
Author(s):  
Zhaolin Ai ◽  
Liqian Wang ◽  
Qianying Guo ◽  
Derong Kong ◽  
Yungen Wu ◽  
...  
Keyword(s):  
Short Wavelength ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Dna Nanostructure ◽  
Highly Sensitive ◽  
Modified Graphene

Direct and sensitive short-wavelength ultraviolet (UVC) dosimeters could enable safer disinfection environment against virus. We develop direct, quantitative, specific and highly sensitive UVC dosimeters based on DNA nanostructure-modified graphene field-effect...

scholarly journals Aptamer–field-effect transistors overcome Debye length limitations for small-molecule sensing

Science ◽  
2018 ◽  
Vol 362 (6412) ◽  
pp. 319-324 ◽  
Author(s):  
Nako Nakatsuka ◽  
Kyung-Ae Yang ◽  
John M. Abendroth ◽  
Kevin M. Cheung ◽  
Xiaobin Xu ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Debye Length ◽  
Stem Loop ◽  
Highly Sensitive ◽  
Close Proximity ◽  
Sphingosine 1 Phosphate ◽  
Specific Receptors ◽  
Highly Sensitive Detection

Detection of analytes by means of field-effect transistors bearing ligand-specific receptors is fundamentally limited by the shielding created by the electrical double layer (the “Debye length” limitation). We detected small molecules under physiological high–ionic strength conditions by modifying printed ultrathin metal-oxide field-effect transistor arrays with deoxyribonucleotide aptamers selected to bind their targets adaptively. Target-induced conformational changes of negatively charged aptamer phosphodiester backbones in close proximity to semiconductor channels gated conductance in physiological buffers, resulting in highly sensitive detection. Sensing of charged and electroneutral targets (serotonin, dopamine, glucose, and sphingosine-1-phosphate) was enabled by specifically isolated aptameric stem-loop receptors.

Valinomycin-Modified Graphene Field-Effect Transistors for Potassium Ion Sensors

2011 ◽  
Author(s):  
Y. Sofue ◽  
Y. Ohno ◽  
K. Maehashi ◽  
K. Inoue ◽  
K. Matsumoto
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Potassium Ion ◽  
Ion Sensors ◽  
Modified Graphene

scholarly journals Graphene field effect transistors for highly sensitive and selective detection of K+ ions

2017 ◽  
Vol 253 ◽  
pp. 759-765 ◽  
Author(s):  
Hongmei Li ◽  
Yihao Zhu ◽  
Md. Sayful Islam ◽  
Md Anisur Rahman ◽  
Kenneth B. Walsh ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Selective Detection ◽  
Highly Sensitive

Selective ion sensors based on ionophore-modified graphene field-effect transistors

2013 ◽  
Vol 187 ◽  
pp. 45-49 ◽  
Author(s):  
Kenzo Maehashi ◽  
Yasuyuki Sofue ◽  
Shogo Okamoto ◽  
Yasuhide Ohno ◽  
Koichi Inoue ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Ion Sensors ◽  
Modified Graphene

scholarly journals Gas adsorption and light interaction mechanism in phosphorene-based field-effect transistors

2020 ◽  
Vol 22 (10) ◽  
pp. 5949-5958 ◽  
Author(s):  
Manthila Rajapakse ◽  
George Anderson ◽  
Congyan Zhang ◽  
Rajib Musa ◽  
Jackson Walter ◽  
...  
Keyword(s):  
Schottky Barrier ◽  
Field Effect ◽  
Gas Adsorption ◽  
Field Effect Transistors ◽  
Interaction Mechanism ◽  
Metal Contact ◽  
Contact Interface ◽  
Sensing Mechanism ◽  
Highly Sensitive ◽  
Barrier Model

Phosphorene-based field effect transistors are fabricated and are shown to be highly sensitive gas and photodetectors. The sensing mechanism is explained using a Schottky barrier model at the phosphorene/metal contact interface.

scholarly journals Highly Sensitive NH3 Detection Based on Organic Field-Effect Transistors with Tris(pentafluorophenyl)borane as Receptor

2012 ◽  
Vol 134 (36) ◽  
pp. 14650-14653 ◽  
Author(s):  
Weiguo Huang ◽  
Kalpana Besar ◽  
Rachel LeCover ◽  
Ana María Rule ◽  
Patrick N. Breysse ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Highly Sensitive

scholarly journals Highly sensitive urine glucose detection by graphene field-effect transistors functionalized with electropolymerized nanofilms.

2022 ◽  
Author(s):  
Gonzalo Eduardo Fenoy ◽  
Waldemar Alejandro Marmisollé ◽  
Wolfgang Knoll ◽  
Omar Azzaroni
Keyword(s):  
Glucose Oxidase ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Glucose Sensors ◽  
Glucose Detection ◽  
New Approach ◽  
Urine Glucose ◽  
Highly Sensitive

We introduce a new approach for glucose oxidase (GOx) immobilization on graphene field-effect transistors (gFETs) to fabricate highly sensitive glucose sensors. The strategy relies on the electropolymerization of a layer...

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