Fig. 1
GRACE device fabrication and characterization. a Schematic drawing of ERG recording with the GRACE device. b Schematic illustration of GRACE fabrication with G-quartz and G-Cu. c Photographs of a GRACE device made from G-quartz. Scale bar, 3 mm. Image in the inset demonstrates the high softness of the GRACE device. d Optical transmittance of the bare Parylene-C, and GRACE devices made from G-quartz and G-Cu, all with Parylene thickness of 25 μm. The transmittance at 550 nm wavelength is shown in the inset. e Magnitude and phase of electrochemical impedance of GRACE devices measured in 1× PBS (pH 7.4)
