scholarly journals Optimized single-layer MoS2 field-effect transistors by non-covalent functionalisation

Nanoscale ◽  
2018 ◽  
Vol 10 (37) ◽  
pp. 17557-17566 ◽  
Author(s):  
HyunJeong Kim ◽  
WungYeon Kim ◽  
Maria O'Brien ◽  
Niall McEvoy ◽  
Chanyoung Yim ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Chemical Vapour Deposition ◽  
Field Effect ◽  
Vapour Deposition ◽  
Field Effect Transistors ◽  
Chemical Vapour ◽  
High Mobility ◽  
Single Layer

High mobility, fully encapsulated field-effect transistors with non-covalently functionalised molybdenum disulfide (MoS2) channels grown by chemical vapour deposition are reported.

Chemical Vapour Deposition Graphene Radio-Frequency Field-Effect Transistors

2012 ◽  
Vol 29 (5) ◽  
pp. 057302 ◽  
Author(s):  
Peng Ma ◽  
Zhi Jin ◽  
Jian-Nan Guo ◽  
Hong-Liang Pan ◽  
Xin-Yu Liu ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Chemical Vapour Deposition ◽  
Field Effect ◽  
Vapour Deposition ◽  
Field Effect Transistors ◽  
Chemical Vapour ◽  
Radio Frequency Field ◽  
Frequency Field

scholarly journals Chemical Vapour Deposition Graphene Field-Effect Transistors for Detection of Human Chorionic Gonadotropin Cancer Risk Biomarker

2018 ◽  
Author(s):  
Carrie Haslam ◽  
Samar Damiati ◽  
Toby Whitley ◽  
Paul Davey ◽  
Emmanuel Ifeachor ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Field Effect ◽  
Vapour Deposition ◽  
Field Effect Transistors ◽  
Limit Of Detection ◽  
Chemical Vapour ◽  
Medical Diagnostics ◽  
Electrical Measurements

We report on the development of chemical vapour deposition (CVD) based graphene field effect transistor (GFET) immunosensors for the sensitive detection of Human Chorionic Gonadotropin (hCG), a glycoprotein risk biomarker of certain cancers. The GFET sensors were fabricated on Si/SiO2 substrate using photolithography with evaporated chromium and sputtered gold contacts. GFET channels were functionalized with a linker molecule to immobile anti-hCG antibody on the surface of graphene. Binding reaction of the antibody with varying concentration levels of hCG antigen demonstrated the limit of detection of the GFET sensors to be below 1 pg/mL using four-probe electrical measurements. We also show annealing can significantly improve the carrier transport properties of GFETs and shift the Dirac point (Fermi level) with reduced p-doping in back-gated measurements. The developed GFET biosensors are generic and could find applications in a broad range of medical diagnostics in addition to cancer, such as neurodegenerative (Alzheimer’s, Parkinson’s and Lewy body) and cardiovascular disorders.

scholarly journals Chemical Vapour Deposition Graphene Field-Effect Transistors for Detection of Human Chorionic Gonadotropin Cancer Risk Biomarker

2017 ◽  
Author(s):  
Carrie Haslam ◽  
Samar Damiati ◽  
Toby Whitley ◽  
Paul Davey ◽  
Emmanuel Ifeachor ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Field Effect ◽  
Vapour Deposition ◽  
Field Effect Transistors ◽  
Limit Of Detection ◽  
Chemical Vapour ◽  
Medical Diagnostics ◽  
Electrical Measurements

We report on the development of chemical vapour deposition (CVD) based graphene field effect transistor (GFET) immunosensors for the sensitive detection of Human Chorionic Gonadotropin (hCG), a glycoprotein risk biomarker of certain cancers. The GFET sensors were fabricated on Si/SiO2 substrate using photolithography with evaporated chromium and sputtered gold contacts. GFET channels were functionalized with a linker molecule to immobile anti-hCG antibody on the surface of graphene. Binding reaction of the antibody with varying concentration levels of hCG antigen demonstrated the limit of detection of the GFET sensors was ~0.1 pg/mL using four-probe electrical measurements. We also show annealing can significantly improve the carrier transport properties of GFETs and shift the Dirac point (Fermi level) with reduced p-doping in back-gated measurements. The developed GFET biosensors are generic and could find applications in a broad range of medical diagnostics in addition to cancer, such as neurodegenerative (Alzheimer’s, Parkinson’s and Lewy body) and cardiovascular disorders.

Chemically induced transformation of chemical vapour deposition grown bilayer graphene into fluorinated single-layer diamond

2019 ◽  
Vol 15 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Pavel V. Bakharev ◽  
Ming Huang ◽  
Manav Saxena ◽  
Suk Woo Lee ◽  
Se Hun Joo ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Single Layer ◽  
Bilayer Graphene ◽  
Chemically Induced

scholarly journals Apparent differences between single layer molybdenum disulphide fabricated via chemical vapour deposition and exfoliation

2020 ◽  
Vol 31 (50) ◽  
pp. 505604 ◽  
Author(s):  
Erik Pollmann ◽  
Lukas Madauß ◽  
Simon Schumacher ◽  
Uttam Kumar ◽  
Flemming Heuvel ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Single Layer ◽  
Molybdenum Disulphide
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