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The characterization of the individual FLG and the transferred FLG film: (a) TEM image of an individual FLG, (b) the Raman spectra (633 nm) of the pristine graphite and the FLG film, (c) SEM image of the transferred FLG film, and (d) XPS spectrum of the FLG film (Cls narrow scan).
Preparation of the FLG-driven actuator: (a) masking on the silicone substrate, (b) transfer FLG film via the transfer technique, (c) complete drying at 150 °C for 24 h under vacuum, (d) repeating the transfer to attach the FLG film to the opposite side of the silicone substrate and remove the mask, (e) side view of FLG-driven actuator, and (f) camera image of the FLG-driven actuator. (g) Transmittance of the silicone elastomer, FLG/silicone, and FLG/silicone/FLG in the visible light wavelength region.
Displacement of the FLG-driven actuator (a thickness of 100 μm) at various voltages at 1 Hz (a) and its maximum displacement (b). The displacement of the FLG-driven actuator (a thickness of 100 μm) at various frequencies at 3 kV (c) and its maximum displacement (d).
Photographs of the FLG-driven actuator captured by the DSLR camera in the states of voltage “OFF” (a) and “ON” (b). The manuscript images through the FLG-driven actuator is compared in (c) and (d), each corresponding to the voltage “OFF” and “ON,” respectively (applied voltage at 4 kV).
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