Platinum tripods as nanometric frequency multiplexing devices

Electrical and structural characterization of nano-particles are very important steps to determine their potential applications in microelectronics. In this paper, we adress the crystallographic and electric transport properties of soft-chemistry-grown nanometric Pt tribranches. We report that Pt nanostars grown from the reduction of ${\text{H}}_2{\text{PtCl}}_6$ salt in pure oleylamine present a remarkable crystalline structure and a deeply metallic character despite being grown under mild conditions. We demonstrate that such devices are able to operate at current densities surpassing $200$ MA/${\text{cm}}^2$, actuating as highly compact frequency multiplexers in the non-ohmic regime.