Non-Invasive Hydration Monitoring with a Graphene Dual Sweat Sensor. - Ng, Joseph J. Q.; Tkachev, Sergey; Sim, Glendon C. F.; Felippi de Lima, Luiza; Koon, Gavin K. W.; Lima, Alexandre P.; Castro Neto, Antonio H. (Applied Sciences (2076-3417), 2025)