Electrical Percolation Threshold and Size Effects in Polyvinylpyrrolidone-Oxidized Single-Wall Carbon Nanohorn Nanocomposite: The Impact for Relative Humidity Resistive Sensors Design. - Bogdan-Catalin Serban; Cornel Cobianu; Niculae Dumbravescu; Octavian Buiu; Marius Bumbac; Cristina Mihaela Nicolescu; Cosmin Cobianu; Mihai Brezeanu; Cristina Pachiu; Matei Serbanescu (Sensors, 2021)