Study of porphyrin-modified liquid exfoliated graphene field-effect transistors for evaluating DNA methylation degree

The Analyst ◽  
2019 ◽  
Vol 144 (16) ◽  
pp. 4787-4794
Author(s):  
Zhongrong Wang ◽  
Shihui Hu ◽  
Fang Li ◽  
Qingjie Fan ◽  
Yunfang Jia
Keyword(s):  
Dna Methylation ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Exfoliated Graphene

Recognizing and counting 5-methylcytosine (5mC) sites on ssDNA are realized by porphyrin-modified liquid exfoliated graphene field-effect transistors (TAPP@LEG-FETs).

Leveraging the Ambipolar Transport in Polymeric Field-Effect Transistors via Blending with Liquid-Phase Exfoliated Graphene

2014 ◽  
Vol 26 (28) ◽  
pp. 4814-4819 ◽  
Author(s):  
Mirella El Gemayel ◽  
Sébastien Haar ◽  
Fabiola Liscio ◽  
Andrea Schlierf ◽  
Georgian Melinte ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Exfoliated Graphene ◽  
Ambipolar Transport

scholarly journals A disposable DNA methylation sensor based on the printable graphene field effect transistor

2021 ◽  
Vol 271 ◽  
pp. 04045
Author(s):  
Yunfang Jia ◽  
Jizhao Zhang ◽  
Qingjie Fan
Keyword(s):  
Dna Methylation ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Exfoliated Graphene ◽  
Sensing Platform ◽  
Graphene Field Effect Transistor ◽  
Experimental Tool ◽  
Effect Transistor ◽  
Epigenetic Research ◽  
Pet Films

The detection of DNA methylation is necessary for the research of epigenetics. In this work we would like to propose a disposable DNA methylation sensor by using graphene field effect transistor (GFET) as the sensing platform. In this component, the liquid-phase exfoliated graphene (LEG) nanosheets were drop-coated on the flexible substrates of polyethylene terephthalate (PET) films. Then, the interdigital structured electrodes (named as source and drain) were printed on the LEG coated PET films to form the expected GFETs. Thirdly, the carbon dots (CDs) decoration was conducted and examined on the asprepared GFETs to evaluate the influence of CDs, as well as optimize CDs’ concentration. At last, the immune identification-based sensing strategy was utilized on the CDs modified GFETs to develop the concerned DNA methylation sensor. The experimental data indicate the proposed sensors could be a potential experimental tool for epigenetic research.

scholarly journals Preparation of Nanocomposite-Based High Performance Organic Field Effect Transistor via Solution Floating Method and Mechanical Property Evaluation

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1046
Author(s):  
Youn Kim ◽  
Yeon Ju Kwon ◽  
Seungwan Ryu ◽  
Cheol Jin Lee ◽  
Jea Uk Lee
Keyword(s):  
Mechanical Properties ◽  
Nanocomposite Film ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Hybridization Technique ◽  
Sio2 Substrate ◽  
Exfoliated Graphene ◽  
Property Evaluation ◽  
Order Of Magnitude

We demonstrate that using nanocomposite thin films consisting of semiconducting polymer, poly(3-hexylthiophene) (P3HT), and electrochemically exfoliated graphene (EEG) for the active channel layer of organic field-effect transistors (OFETs) improves both device performances and mechanical properties. The nanocomposite film was developed by directly blending P3HT solution with a dispersion of EEG at various weight proportions and simply transferring to an Si/SiO2 substrate by the solution floating method. The OFET based on P3HT/EEG nanocomposite film showed approximately twice higher field-effect mobility of 0.0391 cm2·V−1·s−1 and one order of magnitude greater on/off ratio of ~104 compared with the OFET based on pristine P3HT. We also measured the mechanical properties of P3HT/EEG nanocomposite film via film-on-elastomer methods, which confirms that the P3HT/EEG nanocomposite film exhibited approximately 2.4 times higher modulus (3.29 GPa) than that of the P3HT film (1.38 GPa), while maintaining the good bending flexibility and durability over 10.0% of bending strain and bending cycles (1000 cycles). It was proved that the polymer hybridization technique, which involves adding EEG to a conjugated polymer, is a powerful route for enhancing both device performances and mechanical properties while maintaining the flexible characteristics of OFET devices.

Ferroelectric field-effect transistors based on solution-processed electrochemically exfoliated graphene

2018 ◽  
Vol 144 ◽  
pp. 90-94 ◽  
Author(s):  
Jonas Heidler ◽  
Sheng Yang ◽  
Xinliang Feng ◽  
Klaus Müllen ◽  
Kamal Asadi
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Solution Processed ◽  
Exfoliated Graphene

Air-Stable n-Channel Organic Single-Crystal Field-Effect Transistors

2008 ◽  
Author(s):  
Takafumi Uemura ◽  
Masakazu Yamagishi ◽  
Yukihiro Tominari ◽  
Jun Takeya
Keyword(s):  
Single Crystal ◽  
Crystal Field ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Crystal Field Effect ◽  
Organic Single Crystal

Organic Three-dimensional Field-effect Transistors

2008 ◽  
Author(s):  
M. Uno ◽  
I. Doi ◽  
K. Takimiya ◽  
Jun Takeya
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Three Dimensional
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