Fig. 4: Dependences of the resistance of LIG on scanning speed and dots per inch (DPI). | npj Flexible Electronics

Fig. 4: Dependences of the resistance of LIG on scanning speed and dots per inch (DPI).

From: A soft and stretchable electronics using laser-induced graphene on polyimide/PDMS composite substrate

Fig. 4

a Schematic illustration of the DPI and PPI during the laser scanning procedure. b The contour plot of the resistance of LIG in terms of scanning speed and DPI. c SEM images of LIG fabricated under different speeds and DPI values. The specific power and frequency are fixed as 12% and 16 kHz. And the weight ratio of PI particles to PDMS is 1:2. d Dependences of the resistance of LIG on PPI and DPI. SEM images of LIG fabricated under a fixed fluence of the laser (70.8 J cm−2) but different frequencies, scanning speeds and DPI values. The LIG is fabricated onto PI/PDMS composite substrate under the condition of (specific power, frequency, scanning speed, DPI) = (12%, 6 kHz, 175 mm s−1, 875), (12%, 10 kHz, 225 mm s−1, 1125), and (12%, 16 kHz, 285 mm s−1, 1425), from left to right. And the weight ratio of PI particles to PDMS is 1:2.

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