Indium tin oxide-coated glass modified with reduced graphene oxide sheets and gold nanoparticles as disposable working electrodes for dopamine sensing in meat samples

Nanoscale ◽  
2012 ◽  
Vol 4 (15) ◽  
pp. 4594 ◽  
Author(s):  
Jiang Yang ◽  
J. Rudi Strickler ◽  
Sundaram Gunasekaran
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Coated Glass ◽  
Reduced Graphene ◽  
Meat Samples ◽  
Graphene Oxide Sheets

scholarly journals Electrochemical Impedance Characterization of Cell Growth on Reduced Graphene Oxide–Gold Nanoparticles Electrodeposited on Indium Tin Oxide Electrodes

2019 ◽  
Vol 9 (2) ◽  
pp. 326 ◽  
Author(s):  
Somasekhar Chinnadayyala ◽  
Jinsoo Park ◽  
Yonghyun Choi ◽  
Jae-Hee Han ◽  
Ajay Yagati ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Cell Growth ◽  
Reduced Graphene Oxide ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Electrochemical Impedance ◽  
Hek293 Cells ◽  
Ito Electrode ◽  
Reduced Graphene

The improved binding ability of graphene–nanoparticle composites to proteins or molecules can be utilized to develop new cell-based assays. In this study, we fabricated reduced graphene oxide–gold nanoparticles (rGO-AuNP) electrodeposited onto a transparent indium tin oxide (ITO) electrode and investigated the feasibility of the electrochemical impedance monitoring of cell growth. The electrodeposition of rGO–AuNP on the ITO was optically and electrochemically characterized in comparison to bare, rGO-, and AuNP-deposited electrodes. The cell growth on the rGO–AuNP/ITO electrode was analyzed via electrochemical impedance measurement together with the microscopic observation of HEK293 cells transfected with a green fluorescent protein expression vector. The results showed that rGO–AuNP was biocompatible and induced an increase in cell adherence to the electrode when compared to the bare, AuNP-, or rGO-deposited ITO electrode. At 54 h cultivation, the average and standard deviation of the saturated normalized impedance magnitude of the rGO–AuNP/ITO electrode was 3.44 ± 0.16, while the value of the bare, AuNP-, and rGO-deposited ITO electrode was 2.48 ± 0.15, 2.61 ± 0.18, and 3.01 ± 0.25, respectively. The higher saturated value of the cell impedance indicates that the impedimetric cell-based assay has a broader measurement range. Thus, the rGO–AuNP/ITO electrode can be utilized for label-free and real-time impedimetric cell-based assays with wider dynamic range.

Characteristics of ultrasonication assisted assembly of gold nanoparticles in hydrazine reduced graphene oxide

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107348-107354 ◽  
Author(s):  
Kashyap Dave ◽  
Kyung Hee Park ◽  
Marshal Dhayal
Keyword(s):  
Gold Nanoparticles ◽  
Surface Modification ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Organic Molecules ◽  
Gold Chloride ◽  
Reduced Graphene ◽  
Gold Composites ◽  
Graphene Oxide Sheets

Graphene gold composites were synthesized by ultrasonication assisted in situ reduction of diffused gold chloride within hydrazine reduced graphene oxide sheets without surface modification or functionalization with organic molecules.

scholarly journals Reduced graphene oxide–titania based platform for label-free biosensor

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60386-60396 ◽  
Author(s):  
Pratima R. Solanki ◽  
Saurabh Srivastava ◽  
Md. Azahar Ali ◽  
Rajesh Kr. Srivastava ◽  
Anchal Srivastava ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vibrio Cholerae ◽  
Reduced Graphene Oxide ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Label Free ◽  
Oxide Electrode ◽  
Indium Tin Oxide Electrode ◽  
Anatase Titania ◽  
Reduced Graphene

A label-free biosensor has been fabricated using a reduced graphene oxide and anatase titania nanocomposite, deposited on indium tin oxide electrode for the specific recognition of Vibrio cholerae.

Reduced graphene oxide field-effect transistor with indium tin oxide extended gate for proton sensing

2014 ◽  
Vol 14 (5) ◽  
pp. 738-743 ◽  
Author(s):  
Thuy Kieu Truong ◽  
T.N.T. Nguyen ◽  
Tran Quang Trung ◽  
Il Yung Sohn ◽  
Duck-Jin Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Reduced Graphene ◽  
Effect Transistor
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