Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Joel Hayes"'
Publikováno v:
Journal of Power Sources. 180:243-252
A novel convective flow membraneless microfluidic fuel cell with porous disk electrodes is described. In this fuel cell design, the fuel flows radially outward through a thin disk shaped anode and across a gap to a ring shaped cathode. An oxidant is
Autor:
P. M. Bythrow, Cynthia A. Volkert, Andrea M. Hodge, Alex V. Hamza, Juergen Biener, Joel Hayes
Publikováno v:
Acta Materialia. 55:1343-1349
A comprehensive study on the relationship between yield strength, relative density and ligament sizes is presented for nanoporous Au foams. Depth-sensing nanoindentation tests were performed on nanoporous foams ranging from 20% to 42% relative densit
Publikováno v:
Journal of Materials Research. 21:2611-2616
Monolithic nanoporous copper was synthesized by dealloying Mn0.7Cu0.3 by two distinct methods: potentiostatically driven dealloying and free corrosion. Both the ligament size and morphology were found to be highly dependent on the dealloying methods
Autor:
Farid F. Abraham, Cynthia A. Volkert, Andrea M. Hodge, Juergen Biener, Joel Hayes, A. V. Hamza, Luis A. Zepeda-Ruiz
Publikováno v:
Nano Letters. 6:2379-2382
Recent nanomechanical tests on submicron metal columns and wires have revealed a dramatic increase in yield strength with decreasing sample size. Here, we demonstrate that nanoporous metal foams can be envisioned as a three-dimensional network of ult
Publikováno v:
Advanced Engineering Materials. 8:853-857
Here the authors present current issues in understanding the mechanical behavior of nanoporous foams as a new class of high yield strength/low density materials. Gold nanoporous foams are used for a systematic study of mechanical properties since the
Publikováno v:
CORROSION. 62:491-500
The addition of chromium and molybdenum to nickel creates alloys with exceptional corrosion resistance in a diverse range of environments. This study examines the complementary roles of ch...
Publikováno v:
Acta Materialia. 51:653-663
The thermal stability and electrical characteristics of tantalum-nitrogen alloy Schottky contacts on n-GaN were investigated. Non-stoichiometric δ-phase (40 atomic percent nitrogen) tantalum nitride contacts exhibited good electrical properties up t
Publikováno v:
Journal of Crystal Growth. 233:451-459
Defects introduced into dendritic web silicon during growth have deleterious effects on electrical properties, and in extreme cases can lead to growth termination. This study used transmission X-ray topography and etch pitting techniques to elucidate
Autor:
Joel Hayes, Cody Friesen
Publikováno v:
Journal of Materials Research. 15:2684-2689
In this paper, we describe a new method for creating nanostructures, and demonstrate its use by depositing Au, Ni, and Zn on a SiO2 passivated Si substrate. The method combined the spatial control of electron-beam lithography with the ease of fabrica
Publikováno v:
Journal of Power Sources. 183:257-259
This communication reports the development and performance of a membraneless fuel cell that utilizes a convective electrolyte flow orthogonal to the plane of the cell electrodes. The orthogonal flow acts to convect reactants to the electrodes and as