A low voltage, flexible, graphene-based electrothermal heater for wearable electronics and localized heating applications

Recent years have seen a rapid increase in the level of sophistication in modern day devices which has given rise to the demand for better performance in all of their components, one of which is the heating element. Two excellent approaches to this need would be to improve the materials from which t...

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Bibliographic Details
Published inMaterials today : proceedings Vol. 33; pp. 1840 - 1844
Main Authors Tembei, Sandra A.N, Hessein, Amr, Fath El-Bab, Ahmed M.R, El-Moneim, Ahmed A
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2020
Subjects
Electrothermal heaters
Flexible electronics
Graphene oxide
Low voltage
Photothermal reduction
Wearable
Electrothermal heaters
Low voltage
Photothermal reduction
Graphene oxide
Wearable
Flexible electronics
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Summary:Recent years have seen a rapid increase in the level of sophistication in modern day devices which has given rise to the demand for better performance in all of their components, one of which is the heating element. Two excellent approaches to this need would be to improve the materials from which these Joule’s heating elements are made and the other to design improved heater geometries for best temperature distribution. In this paper, we discuss a high performance electrothermal heater prepared from laser reduced graphene oxide (LrGO) deposited on Polyethylene Terephthalate (PET) flexible Substrate. The surface morphology and structural properties of the prepared LrGO films were investigated by means of Scanning Electron Microcopy (SEM), X-Ray Diffraction (XRD) and Raman Spectroscopy (RS). Electrothermal (ET) responses of the fabricated electrothermal heaters to different driving DC voltages were studied by Infrared thermal Imagery. An electrothermal heater with a low Sheet resistance of ∼52 O/square was fabricated and it can attained a steady state temperature of up to 135 °C in only 10 s when a low voltage of 9 V was applied. A finite Element model (FEM) was prepared for this heater which agreed well with the experimental results. Power consumption for this heater is as low as 0.389 W/cm2, making it a suitable candidate for energy-saving applications such as wearable electronic.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2020.05.182