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Evolution favors protein mutational robustness in sufficiently large populations
BackgroundAn important question is whether evolution favors properties such as mutational robustness or evolvability that do not directly benefit any individual, but can influence the course ofExpand
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Surface roughness imparts tensile ductility to nanoscale metallic glasses
Experiments show an intriguing brittle-to-ductile transition on size reduction on nanoscale metallic glasses (MGs). Here we demonstrate that such phenomena is linked to a fundamental characteristicExpand
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Nanometallic glasses: size reduction brings ductility, surface state drives its extent.
We report tensile experiments on Ni80P20 metallic glass samples fabricated via a templated electroplating process and via focused ion beam milling, which differed only in their surface energy states:Expand
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Discontinuous rate-stiffening in a granular composite modeled after cornstarch and water
Cornstarch in water exhibits impact-activated solidification (IAS) and strong discontinuous shear thickening, with “shear jamming”. However, these phenomena are absent in cornstarch in ethanol. HereExpand
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Mechanisms of failure in nanoscale metallic glass.
The emergence of size-dependent mechanical strength in nanosized materials is now well-established, but no fundamental understanding of fracture toughness or flaw sensitivity in nanostructuresExpand
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Fractal atomic-level percolation in metallic glasses
Percolating cluster, factal structure Metallic glasses are appealing materials because they are strong and can bend without breaking. These materials are disordered but possess none of the defectsExpand
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Size Effect Suppresses Brittle Failure in Hollow Cu60Zr40 Metallic Glass Nanolattices Deformed at Cryogenic Temperatures.
To harness "smaller is more ductile" behavior emergent at nanoscale and to proliferate it onto materials with macroscale dimensions, we produced hollow-tube Cu60Zr40 metallic glass nanolattices withExpand
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Tailoring of interfacial mechanical shear strength by surface chemical modification of silicon microwires embedded in Nafion membranes.
The interfacial shear strength between Si microwires and a Nafion membrane has been tailored through surface functionalization of the Si. Acidic (-COOH-terminated) or basic (-NH2-terminated)Expand
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Ductility and work hardening in nano-sized metallic glasses
In-situ nano-tensile experiments on 70 nm-diameter free-standing electroplated NiP metallic glass nanostructures reveal tensile true strains of ∼18%, an amount comparable to compositionally identicalExpand
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Ordering and dimensional crossovers in metallic glasses and liquids
The atomic-level structures of liquids and glasses are amorphous, lacking long-range order. We characterize the atomic structures by integrating radial distribution functions (RDF) from molecularExpand
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