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

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...

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Label-Free Biosensors Based on Aptamer-Modified Graphene Field-Effect Transistors

Journal of the American Chemical Society ◽

10.1021/ja108127r ◽

2010 ◽

Vol 132 (51) ◽

pp. 18012-18013 ◽

Cited By ~ 359

Author(s):

Yasuhide Ohno ◽

Kenzo Maehashi ◽

Kazuhiko Matsumoto

Keyword(s):

Field Effect ◽

Field Effect Transistors ◽

Label Free ◽

Modified Graphene

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Influence of ssDNA Immobilization on the Conductance of Solution Gated Graphene Transistors

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.830.302 ◽

2013 ◽

Vol 830 ◽

pp. 302-305 ◽

Cited By ~ 1

Author(s):

Meng Song ◽

Cheng Ju ◽

Yun Fang Jia

Keyword(s):

Phosphate Buffer ◽

Field Effect ◽

Field Effect Transistors ◽

Phosphate Buffer Solution ◽

Single Strand ◽

Buffer Solution ◽

Reduced Graphene ◽

Modified Graphene ◽

Carboxyl Modification ◽

Reduced State

Carboxyl-modified graphene materials in both oxide and reduced state were explored in parallel for the preparation of field-effect transistors (FET). They were solution gated by phosphate buffer solution (PBS) (pH 7.2). Their conductance were examined and compared with unmodified graphene transistors, firstly. Then, after single strand DNA molecules were immobilized on reduced and oxide graphene transistors, their conductance and compared. Here ssDNA molecules were amino-tagged at the terminal five. It was found that ambipolar characteristic was exhibited by reduced graphene transistors, even they were undergone carboxyl modification. And it was also discovered that there were opposite conductance variation with the increasing of ssDNA concentrations and bigger changes were obtained by reduced carboxyl-modified graphene transistors.

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Label-Free Immunosensors Based on Aptamer-Modified Graphene Field-Effect Transistors

10.7567/ssdm.2010.j-5-1 ◽

2010 ◽

Author(s):

Y. Ohno ◽

K. Maehashi ◽

K. Matsumoto

Keyword(s):

Field Effect ◽

Field Effect Transistors ◽

Label Free ◽

Modified Graphene

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Electrical Detection of ppb Region NO2 using Mg-porphyrin-modified Graphene Field-effect Transistors

Nanoscale Advances ◽

10.1039/d1na00519g ◽

2021 ◽

Author(s):

Takashi Ikuta ◽

Takashi Tamaki ◽

Hiroshi Masai ◽

Ryudai Nakanishi ◽

Kitaro Endo ◽

...

Keyword(s):

Air Quality ◽

Field Effect ◽

Field Effect Transistors ◽

Quality Measurement ◽

Trace Detection ◽

Electrical Detection ◽

Electrical Devices ◽

Modified Graphene ◽

Health Field

The trace detection of NO2 through small sensors is essential for air quality measurement and the health field; however, small sensors based on electrical devices cannot detect NO2 with the...

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