Results 1 to 10 of about 471,650 (358)

Porosity in minerals

open access: yesAIMS Materials Science, 2022
Minerals typically form porous assemblies with porosity extending from a few percent to ca. 35% in porous sandstones, and over 50% in tuff, clays, and tuff. While transport of gases and liquids are widely researched in these materials, much less is known
Ekhard K.H. Salje
doaj   +3 more sources

A historical overview of the activation and porosity of metal–organic frameworks

open access: yesChemical Society Reviews, 2020
Since the first reports of metal-organic frameworks (MOFs), this unique class of crystalline, porous materials has garnered increasing attention in a wide variety of applications such as gas storage and separation, catalysis, enzyme immobilization, drug ...
Xuan Zhang, Zhijie Chen, Xinyao Liu
exaly   +2 more sources

High-Porosity Foam-Based Iontronic Pressure Sensor with Superhigh Sensitivity of 9280 kPa−1

open access: yesNano-Micro Letters, 2021
High porosity and low modulus of the active layer are found to contribute to high sensitivity in a capacitive pressure sensor. Pressure sensor achieves a superhigh sensitivity of 9280 kPa-1 by using polyurethane-ionic liquid foam with a high porosity (95.
Yuan Liu, Quan Wang
exaly   +2 more sources

Two-dimensional covalent organic frameworks with hierarchical porosity

open access: yesChemical Society Reviews, 2020
Covalent organic frameworks (COFs) are a class of crystalline porous organic polymers assembled by connecting organic building units via covalent bonds.
Rong-Ran Liang, Shu-Yan Jiang, Ru-Han A
exaly   +2 more sources

Designing Hydrogen‐Bonded Organic Frameworks (HOFs) with Permanent Porosity

open access: yesAngewandte Chemie - International Edition, 2019
Designing organic components that can be used to construct porous materials enables the preparation of tailored functionalized materials. Research into porous materials has seen a resurgence in the past decade as a result of finding of self-standing ...
Ichiro Hisaki, Kiyonori Takahashi
exaly   +2 more sources

Tuning the Porosity of Supraparticles [PDF]

open access: yesACS Nano, 2019
Supraparticles consisting of nano- or microparticles have potential applications as, for example, photonic crystals, drug carriers, or heterogeneous catalysts.
Wendong Liu, M. Kappl, H. Butt
semanticscholar   +5 more sources

Medical Applications of Porous Biomaterials: Features of Porosity and Tissue‐Specific Implications for Biocompatibility

open access: yesAdvanced Healthcare Materials, 2022
Porosity is an important material feature commonly employed in implants and tissue scaffolds. The presence of material voids permits the infiltration of cells, mechanical compliance, and outward diffusion of pharmaceutical agents.
J. L. Hernandez, K. Woodrow
semanticscholar   +1 more source

Porosity,  -porosity and measures [PDF]

open access: yesNonlinearity, 2002
We show that given a σ-finite Borel regular measure μ in a metric space X, every σ-porous subset of X of finite measure can be approximated by strongly porous sets. It follows that every σ-porous set is the union of a σ-strongly porous set and a μ-null set.
Mera Rivas, María Eugenia   +3 more
openaire   +4 more sources

A critical review on the effects of process-induced porosity on the mechanical properties of alloys fabricated by laser powder bed fusion

open access: yesJournal of Materials Science, 2022
Laser powder bed fusion (LPBF) is an emerging additive manufacturing technique that is currently adopted by a number of industries for its ability to directly fabricate complex near-net-shaped components with minimal material wastage.
W. Kan   +6 more
semanticscholar   +1 more source

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