This paper introduces a new methodology for the fabrication of strain-sensor elements for MEMS and NEMS applications based on the tunneling effect in nano-granular metals. The strain-sensor elements are prepared by the maskless lithography technique of focused electron-beam-induced deposition (FEBID) employing the precursor trimethylmethylcyclopentadienyl platinum [MeCpPt(Me)(3)]. We use a cant...

Chemical & Biological Engineering Department, Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM 87131, United States Zero Emission Research, Fuel cell and Battery Laboratory, Nissan Technical Center North America, Farmington Hills, MI 48331, United States Institut Charles Gerhardt de Montpellier, UMR 5253 CNRS Université de Montpellier, Agrégats, Interfaces et Mat...

The porosity of platinum nanoparticles (PtNPs) is explored for the first time using tag-redox coulometry (TRC). This is achieved by monitoring the reduction of the 4-nitrobenzenethiol (NTP)-tagged PtNPs on carbon electrodes via both immobilisation and nanoimpacts. The average charge per impact is measured and attributed to the reduction of NTP adsorbed on individual PtNPs. The number of NTP mol...

Shantanu Bhattacharya1 4 7, Nripen Chanda3, Yi-Shao Liu4, Sheila A. Grant1, Keshab Gangopadhyay2 6, Paul R. Sharp3, Rashid Bashir4 5 ∗, and Shubhra Gangopadhyay2 ∗ 1Department of Biological Engineering, University of Missouri, Columbia, MO, 65211, USA 2Department of Electrical and Computer Engineering, University of Missouri, Columbia, MO, 65211, USA 3Department of Chemistry, University of Miss...

Platinum is deposited into porous carbon materials relevant for fuel cell electrodes using plasma sputtering techniques. The resulting platinum concentration profile extends up to 2μm into the porous carbon and is well fitted by a generalized stretched Gaussian function, which displays the non-thermal nature of the penetration process. Platinum deposits are observed to grow as clusters. On the ...

In terms of the fully relativistic screened Korringa-Kohn-Rostoker method we investigate the variation in the magnetocrystalline anisotropy energy (MAE) of hexagonal close-packed cobalt with the addition of platinum impurities. In particular, we perform calculations on a bulk cobalt system in which one of the atomic layers contains a fractional, substitutional platinum impurity. Our calculation...