The Role of Functionalization in the Applications of Carbon Materials: An Overview,PEDOT-Doped Mesoporous Nanocarbon Electrodes for High Capacitive Aqueous Symmetric Supercapacitors,Macromolecule–Nanoparticle-Based Hybrid Materials for Biosensor Applications,Piezoelectric Materials for Controlling Electro-Chemical Processes | Nano-Micro Letters,Piezoelectric Materials for Controlling Electro-Chemical Processes | Nano-Micro Letters