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Functional composite thin films have a wide variety of applications inflexible and/or electronic devices, telecommunications and multifunctionalemerging coatings. Rapid screening of their properties is a challenging task,especially with multiple components defining the targeted properties. In thiswork we present a manifold for accelerated automated screening of viscousgraphene suspensions for optimal electrical conductivity. Using Opentrons OT2robotic auto-pipettor, we tested 3 most industrially significant surfactants -PVP, SDS and T80 - by fabricating 288 samples of graphene suspensions inaqueous hydroxypropylmethylcellulose. Enabled by our custom motorized 4-pointprobe measurement setup and computer vision algorithms, we then measuredelectrical conductivity of every sample using custom and identified that thehighest performance is achieved for PVP-based samples, peaking at 10.4 mS/cm.The automation of the experimental procedure allowed us to perform majority ofthe experiments using robots, while involvement of human researcher was kept tominimum. Overall the experiment was completed in less than 18 hours, only 3 ofwhich involved humans.

Accelerated automated screening of viscous graphene suspensions with various surfactants for optimal electrical conductivity