  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.
