Conductive, self-cleaning, and short-circuit proof multi-functional graphene aerogel composite fibers

Zhang, Yu-Rui; Gao, Yuan; Zheng, Quan-Hao; Zhang, Tingting; Qiu, Li-Peng; Gao, Shi-Long; Zhang, Xuetong; Han, Wenjuan; Long, Yun‐Ze

doi:10.1007/s10854-022-08814-5

Cited by 3 publications

(1 citation statement)

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“…As shown in Figure 5d, D, G, and 2D peaks are present in the Raman signal at ≈1345 cm −1 , ≈1580 cm −1 , and ≈2682 cm −1 , respectively. [27,33,34] Moreover, no particular trend is seen in the intensity of these peaks. Based on Figure 5e,f, the I D , I G , and (I D /I G ) do not have a specific trend over the sample's length, indicating that the laser treatment effect is not strongly reflected in the Raman signal.…”

Section: Photon Sensing By Graded Gafmentioning

confidence: 91%

Function Graded Carbon Micro‐Structures for Powerless Photon Sensing with Intriguing µm‐Scale Position Sensitivity

Karamati,

Qu,

Bai

et al. 2023

Advanced Optical Materials

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Partial laser treatment is introduced to carbon‐based microfibers to generate excellent photon sensing capability without bias. This treatment brings about a Seebeck coefficient distribution along the sample's length, out of which a photovoltage with no external bias is generated and sensed. Using a line‐shaped laser spot, carbon microfiber (CMF), graphene microfiber (GMF), and graphene aerogel fiber (GAF) are investigated for their response to µm‐scale photon irradiation. A higher sensitivity for the incident photon is found for the GAF with no position sensitivity. More Seebeck coefficient variation is also observed for the GAF considering the amount of laser power used for the laser treatment. A weaker Seebeck coefficient spatial variation is observed for the GMF compared with the GAF. However, its photovoltage shows an abrupt magnitude change from the laser‐treated region to the non‐treated one. Despite the low spatial variation of the Seebeck coefficient for the CMF, it features an excellent and accurate position‐sensitive photoresponse with polarization change over a distance of ≈100 µm. Such unique capability prompts novel applications in using partially annealed CMF for sensing the position of optical beams at the microscale.

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Section: Photon Sensing By Graded Gafmentioning

confidence: 91%