Results 11 to 20 of about 19,320,239 (252)

Band gap enhancement in periodic frames using hierarchical structures [PDF]

open access: yes, 2021
The quest for novel designs for lightweight phononic crystals and elastic metamaterials with wide low-frequency band gaps has proven to be a significant challenge in recent years.
Vinícius F. Dal Poggetto   +11 more
core   +3 more sources

Nanomechanics of Hierarchical Cellular Solids [PDF]

open access: yes, 2012
Materials Science and Engineering, a young and vibrant discipline with its inception in the 1950s, has expanded into three directions: metals, polymers, and ceramics (and their mixtures, composites).
Chen, Qiang
core   +5 more sources

Geometrical Degrees of Freedom for Cellular Structures Generation: A New Classification Paradigm

open access: yesApplied Sciences, 2021
Cellular structures (CSs) have been used extensively in recent years, as they offer a unique range of design freedoms. They can be deployed to create parts that can be lightweight by introducing controlled porous features, while still retaining or ...
Ken M. Nsiempba   +2 more
doaj   +1 more source

Chiral gold nanoparticles enantioselectively rescue memory deficits in a mouse model of Alzheimer’s disease

open access: yesNature Communications, 2020
Nanoparticles are being explored as a potential method to target Aβ aggregation in Alzheimer’s disease. Here, the authors develop gold nanoparticles that were capped with chiral L or D-glutathione which has been shown to improve BBB permeability and ...
Ke Hou   +14 more
doaj   +1 more source

Morphological and Chemical Effects of Plasma Treatment with Oxygen (O2) and Sulfur Hexafluoride (SF6) on Cellulose Surface [PDF]

open access: yesMaterials Research, 2018
Cellulose is a polymer widely available in nature, however its applications may be restrict due to its hydrophilic character. The creation of hierarchical structures on the surface is one of the required factors to obtain the hydrophobicity of this ...
Janine Sanches Gonzaga de Camargo   +4 more
doaj   +1 more source

Elastic and Transport Properties of the Tailorable Multifunctional Hierarchical Honeycombs [PDF]

open access: yes, 2013
In this paper, we analytically studied the in-plane elastic and transport properties of a peculiar hexagonal honeycomb, i.e., the multifunctional hierarchical honeycomb (MHH).
Pugno, Nicola M.   +5 more
core   +1 more source

Spark plasma sintering of layered γ-Al2O3/graphene reinforced nanocomposites; pp. 140–144 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2019
Multi-layered ceramic composites with alternation of grain sizes in layers were produced by adding thin interlayers of graphene-augmented alumina nanofibres (GAIN) between layers of monolithic α-Al2O3.
Ali Saffar Shamshirgar   +2 more
doaj   +1 more source

A review of flood risk assessment frameworks and the development of hierarchical structures for risk components [PDF]

open access: yesDiscover Water
Climate change and rapid urbanization have intensified the frequency and severity of flooding, resulting in substantial damage to communities and infrastructure.
Nazgol Tabasi   +2 more
semanticscholar   +1 more source

Googling the brain : discovering hierarchical and asymmetric network structures, with applications in neuroscience [PDF]

open access: yes, 2011
Hierarchical organisation is a common feature of many directed networks arising in nature and technology. For example, a well-defined message-passing framework based on managerial status typically exists in a business organisation.
Crofts, J.J., Higham, D.J.
core   +4 more sources

NH3 Sensor Based on 3D Hierarchical Flower-Shaped n-ZnO/p-NiO Heterostructures Yields Outstanding Sensing Capabilities at ppb Level

open access: yesSensors, 2020
Hierarchical three-dimensional (3D) flower-like n-ZnO/p-NiO heterostructures with various ZnxNiy molar ratios (Zn5Ni1, Zn2Ni1, Zn1Ni1, Zn1Ni2 and Zn1Ni5) were synthesized by a facile hydrothermal method. Their crystal phase, surface morphology, elemental
Zhenting Zhao   +9 more
doaj   +1 more source

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