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Free-standing laser energy converter based on energetic graphene oxide for enhanced photothermic ignition

Abstract

Dramatic temperature rise of energetic materials by using only millisecond pulses of light is very important for photothermic ignition. Here we demonstrated free-standing laser energy converter based on energetic graphene oxide, which exhibited ultrafast and large temperature rise from 21 to 670 °C within 8.7 ms during the irradiation of laser pulse, while the temperature of graphene-based laser energy converter can only be raised from 21 to 170 °C under the same condition. The reason for the unexpected and much larger temperature rise of energetic graphene oxide than graphene was studied by laser scanning microscope and thermal analysis, which indicated that the temperature rise is strongly dependent on the content of oxygen-containing groups in energetic graphene oxide. The combination process of focused ion beam and transmission electron microscope characterization was utilized for the direct observation of the layer-stacked structure in free-standing graphene oxide and graphene membranes. Furthermore, the initiating energy of laser squibs was 40% decreased by adding a thin layer of free-standing laser energy converter based on energetic graphene oxide, which gives great potential for developing photothermic ignition with low initiating energy.

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Publication details

The article was received on 12 Apr 2018, accepted on 14 Jun 2018 and first published on 14 Jun 2018


Article type: Paper
DOI: 10.1039/C8TA03372B
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Free-standing laser energy converter based on energetic graphene oxide for enhanced photothermic ignition

    F. Yang, D. Tang, T. Zhang, W. Qin, Y. Chen, L. Wang, J. Wang, H. Zhang, Y. Li and L. Zhang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA03372B

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