LR Baggs Passive iBeam Acoustic Guitar Pickup,Passive Operator (Bricky),Efficient capacitive deionization with 2D/3D heterostructured carbon electrode derived from chitosan and g-C3N4 nanosheets - ScienceDirect,Numerical investigation and optimization of a hexagonal thermoelectric generator with diverging fins for exhaust waste heat recovery - ScienceDirect,Momordica Charantia pericarp derived activated carbon with dual redox additive electrolyte for high energy density supercapacitor devices - ScienceDirect