Figure 5
From: Characterisation of graphene electrodes for microsystems and microfluidic devices
The contact angle, θ, of a water droplet on the graphene electrode as a function of the number of doses, n, through the optical disc drive. The inset images are captured using the CMOS image sensor, and are displayed for n = 2, 4, and 9, for low, medium, and high contact angle, respectively.
