Thermally reduced graphene oxide-nylon membrane based epidermal sensor using vacuum filtration for wearable electrophysiological signals and human motion monitoring

Carbon ◽  
2020 ◽  
Vol 158 ◽  
pp. 386-393 ◽  
Author(s):  
Partha Sarati Das ◽  
Sang Hyun Park ◽  
Ku Youn Baik ◽  
Jang Woo Lee ◽  
Jae Yeong Park
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Human Motion ◽  
Nylon Membrane ◽  
Vacuum Filtration ◽  
Reduced Graphene ◽  
Electrophysiological Signals ◽  
Human Motion Monitoring

Thermoelectric Characteristics of Flexible Reduced Graphene Oxide/Silver Selenide Nanowire Composites Prepared by a Facile Vacuum Filtration Process

2021 ◽  
Author(s):  
Zuo Xiao ◽  
Yong Du ◽  
Qiufeng Meng ◽  
Lei Wang
Keyword(s):  
Graphene Oxide ◽  
Composite Film ◽  
Reduced Graphene Oxide ◽  
Power Factor ◽  
Silver Selenide ◽  
Composite Powders ◽  
Nylon Membrane ◽  
Filtration Method ◽  
Vacuum Filtration ◽  
Reduced Graphene

Abstract The reduced graphene oxide/silver selenide nanowire (rGO/Ag2Se NW) composite powders were fabricated via a wet chemical approach, and then flexible rGO/Ag2Se NW composite film was prepared by a facile vacuum filtration method combined with cold-pressing treatment. A highest power factor of 228.88 μWm-1K-2 was achieved at 340 K for the cold-pressed rGO/Ag2Se NW composite film with 0.01 wt% rGO. The rGO/Ag2Se NW composite film revealed superior flexibility as the power factor retained 94.62% after bending for 500 times at a bending radius of 4 mm, which might be due to the interwoven network structures of Ag2Se NWs and pliability of rGO as well as nylon membrane. These results demonstrated the GO/Ag2Se NW composite film has a potential for preparation of flexible thermoelectric devices.

Synergistic effects of a novel free-standing reduced graphene oxide film and surface coating fibronectin on morphology, adhesion and proliferation of mesenchymal stem cells

2015 ◽  
Vol 3 (21) ◽  
pp. 4338-4344 ◽  
Author(s):  
Lin Jin ◽  
Zhiping Zeng ◽  
Shreyas Kuddannaya ◽  
Dan Yue ◽  
Jingnan Bao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Coating ◽  
Synergistic Effects ◽  
Chemical Reduction ◽  
Nanofiber Membrane ◽  
Free Standing ◽  
Vacuum Filtration ◽  
Reduced Graphene

Fabrication of free-standing reduced graphene oxide (RGO) films by vacuum filtration of graphene oxide aqueous solution through a nanofiber membrane in combination with chemical reduction.

Fabrication of flexible reduced graphene oxide–TiO2 freestanding films for supercapacitor application

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 9904-9911 ◽  
Author(s):  
Jinsu Kim ◽  
Wai-Hwa Khoh ◽  
Boon-Hong Wee ◽  
Jong-Dal Hong
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Reduced Graphene Oxide ◽  
Composite Electrode ◽  
Layer Structure ◽  
Free Standing ◽  
Vacuum Filtration ◽  
Supercapacitor Application ◽  
Filtration System ◽  
Reduced Graphene

A rGO/TiO2 free standing film has been fabricated via a simple and facile vacuum filtration system. The composite electrode showed improved electrochemical properties compared to the pure rGO due to the highly expanded layer-structure.

scholarly journals Are vacuum-filtrated reduced graphene oxide membranes symmetric?

Nanoscale ◽  
2016 ◽  
Vol 8 (2) ◽  
pp. 1108-1116 ◽  
Author(s):  
Bo Tang ◽  
Lianbin Zhang ◽  
Renyuan Li ◽  
Jinbo Wu ◽  
Mohamed Neijib Hedhili ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Pore Space ◽  
Membrane Surface ◽  
Filtration Process ◽  
Vacuum Filtration ◽  
Filter Membrane ◽  
Reduced Graphene ◽  
Oxide Membranes ◽  
Graphene Oxide Membranes

Asymmetry of the reduced graphene oxide (rGO) membranes prepared by the commonly used vacuum filtration process is disclosed. When the filter membrane surface pores have similar dimension to GO sheets, the entry of GO sheets into its surface pore space during vacuum filtration can take place, leading to the asymmetry of the rGO membrane.

ENHANCEMENT OF REDUCED GRAPHENE OXIDE BOLOMETRIC PHOTORESPONSE VIA ADDITION OF GRAPHENE QUANTUM DOTS

2021 ◽  
pp. 2140011
Author(s):  
S. LAI ◽  
M. CHEN ◽  
YU. N. KHANIN ◽  
K. S. NOVOSELOV ◽  
D. V. ANDREEVA
Keyword(s):  
Thin Films ◽  
Quantum Dots ◽  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphene Quantum Dots ◽  
Large Area ◽  
Vacuum Filtration ◽  
Optical Absorbance ◽  
Reduced Graphene

Reduced graphene oxide (rGO) has attracted interest in its potential application in large area photodetectors owing to its ease of manufacture and wideband optical absorbance. Here, we report that thin rGO films produced via vacuum filtration of GO followed by reduction by immersion in L-ascorbic acid are capable of sensing light through a bolometric mechanism. The photoresponse of these rGO thin films can be further enhanced by dropcasting graphene quantum dots (GQDs) on the rGO surface. These GQDs were observed to increase the opacity of the rGO film and hence its absorptivity of light, thereby enabling a significant increase in the photoresponse of the device.

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