Steyskal, Eva-MariaEva-MariaSteyskalQi, ZhenZhenQiPölt, PeterPeterPöltAlbu, MihaelaMihaelaAlbuWeissmüller, JörgJörgWeissmüllerWürschum, RolandRolandWürschum2020-03-092020-03-092016-07-27Langmuir 31 (32): 7757-7764 (2016-08-09)http://hdl.handle.net/11420/5253The extremely high surface-to-volume ratio of nanoporous platinum (np-Pt) produced by dealloying was applied for tuning electrical resistance by surface charging. In the as-dealloyed state, a characteristic sign-inversion of the charging-induced resistance variation occurs, which can be associated with the electronic structure of PtO. After electrochemical reduction, the relative resistance variations of np-Pt of up to 58% could be generated by electrochemically induced adsorption and desorption, which was 1 order of magnitude larger compared with that of cluster-assembled nanocrystalline Pt. Although the maximum resistance variation was also higher than that of dealloyed nanoporous gold (np-Au), the resistance variation related to the imposed charge was reduced owing to the higher bulk resistance of Pt compared with that of Au. The sign-inversion behavior of the resistance could be recovered by re-oxidation.en0743-746320163177577764ACS Publ.TechnikJournal Article10.1021/acs.langmuir.6b01734Other