Advanced Engineering Materials
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Recently Published Articles
- Stretchable Metallic Electrodes for Electroactive Polymer Actuators
Florian Habrard, Jörg Patscheider and Gabor Kovacs
Article first published online: 7 MAR 2014 | DOI: 10.1002/adem.201300569
Thin silver films are deposited by magnetron sputtering for use as electrodes in electroactive polymer actuators (EAPs). They can be biaxially stretched up to 13% in one direction without losing electrical conductivity. This is achieved by films with grain size <20 nm and open pore structure using high deposition pressures. Low pressures yield dense films, which crack already at 4% straining.
- Robust Technique Allowing the Manufacture of Superoleophobic (Omniphobic) Metallic Surfaces
Anton Starostin, Viktor Valtsifer, Vladimir Strelnikov, Edward Bormashenko, Roman Grynyov, Yelena Bormashenko and Alexander Gladkikh
Article first published online: 5 MAR 2014 | DOI: 10.1002/adem.201300561
Omniphobic metallic surfaces obtained with a robust process are reported. The surfaces demonstrate high apparent contact angles accompanied with a low contact angle hysteresis for a variety of liquids, including canola, castor, silicone oils, and crude petroleum oil. The superoleophobicity was achieved by fluorination of the nano-rough aluminum surfaces.
- New Methods for Developing and Manufacturing Compliant Mechanisms Utilizing Bulk Metallic Glass
Eric R. Homer, Matthew B. Harris, Shannon A. Zirbel, Joanna A. Kolodziejska, Henry Kozachkov, Brian P. Trease, John-Paul C. Borgonia, Gregory S. Agnes, Larry L. Howell and Douglas C. Hofmann
Article first published online: 5 MAR 2014 | DOI: 10.1002/adem.201300566
Compliant mechanisms rely on the elastic bending of thin members to generate motion. In the paper by Homer, et al., bulk metallic glasses (BMGs) are shown to have an optimal combination of mechanical properties and processing ability, making them ideal for complex, low-cost compliant mechanisms.
- Composition and Mechanical Properties of a Protein/Silica Hybrid Material Forming the Micron-Thick Axial Filament in the Spicules of Marine Sponges
Igor Zlotnikov, Admir Masic, Yannicke Dauphin, Peter Fratzl and Emil Zolotoyabko
Article first published online: 5 MAR 2014 | DOI: 10.1002/adem.201300485
Nearly equal volume fractions of biosilica and proteins are found in the micron-thick axial filament of the anchor spicule of the marine sponge Monorhaphis chuni. Chemical composition and mechanical properties of this unique composite material are characterized by confocal Raman spectroscopy and by nanoindentation and nanoscale elastic modulus mapping, respectively.
- The Banded Structure and Its Effects on the Transverse Elongation and Textures of Mo Bars
Shan Wang, Chang Chen, Yanlin Jia and Mingpu Wang
Article first published online: 5 MAR 2014 | DOI: 10.1002/adem.201300505
The transverse elongation of draw-forged pure Mo bars is improved by upsetting. After upsetting deformation, a 〈011〉 fiber texture evolves into 〈100〉 + 〈111〉 fiber textures. The formation of a 〈110〉 fiber or a 〈100〉 fiber can be explained by a cross-slip mechanism, and the formation of a 〈111〉 fiber can be explained by a microshear banding mechanism.