fig7
Figure 7. (A) Schematic of GAF prepared via CVD process; (B) SEM images of GAF obtained with the growth time of ~20 and ~70 min (top), and graphene-skinned quartz fiber obtained with the growth time of ~60 and ~120 min (bottom). Scale bar, 1 μm. (A and B) are reprinted with permission from Ref.[90], Copyright © 2024 Springer Nature; (C) Flexible GGFF with length and width of 350 and 50 cm, respectively. Reproduced with permission[57], Copyright © 2022 American Chemical Society; (D) Capacitance retention and coulombic efficiency over 15,000 charge/discharge cycles at 0.05 mA·cm-2 and 30 kPa. Reproduced with permission[91], Copyright © 2024 Springer Nature; (E) Charge/discharge profiles. Reproduced with permission[92], Copyright © 2022 John Wiley and Sons; (F) Photo image of the fabricated TENG device. Reproduced with permission[93], Copyright © 2020 Elsevier; (G) Schematic diagram of diversified applications enabled by the 3D t-TENG. Reproduced with permission[94], Copyright © 2022 Elsevier; (H) The robot wears fiber sensors at movable joints (elbow, waist, and knee). Each sensor is marked in the red box at specific joint position. Responsive curves of wearable sensors during the robot’s dance “Gangnam Style”: elbow (black line), waist (red line), and knee (blue line). Reproduced with permission[95], Copyright © 2015 John Wiley and Sons; (I) The photographs (i) and SEM images (ii) of GFF; (J) Images of the GFF-PB-based sensing patch on a volunteer’s wrist. Enlarged view of the sensor and iontophoretic anode in (i). In vivo invasive blood glucose measurement by using a finger-prick glucometer (ii). (I and J) are reprinted with permission from Ref.[1], Copyright © 2021 Elsevier. GAF: Graphene-skinned alumina fiber; CVD: chemical vapor deposition; SEM: scanning electron microscope; GGFF: graphene glass fiber fabric; TENG: triboelectric nanogenerator; GFF: graphene fiber fabric; PB: Prussian blue; AF: alumina fiber; PET: polyethylene terephthalate.
