scholarly journals Three-Dimensional Porous Network Electrodes with Cu(OH)2 Nanosheet/Ni3S2 Nanowire 2D/1D Heterostructures for Remarkably Cycle-Stable Supercapacitors

ACS Omega ◽  
2021 ◽  
Author(s):  
Jiansen Wang ◽  
Libing Hu ◽  
Xiaoya Zhou ◽  
Sheng Zhang ◽  
Qingshan Qiao ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Porous Network

Immiscible Displacement at Pore Level for Correlated Porous Media

1998 ◽  
Vol 09 (06) ◽  
pp. 837-849 ◽  
Author(s):  
A. M. Vidales ◽  
J. L. Riccardo ◽  
G. Zgrablich
Keyword(s):  
Porous Media ◽  
Pore Space ◽  
Three Dimensional ◽  
Immiscible Displacement ◽  
Porous Network ◽  
Buoyancy Forces ◽  
Correlation Strength ◽  
Pore Level

Immiscible displacement at pore level on a three-dimensional correlated porous network is simulated allowing flow of the wetting phase along crevices of the pore walls (possibility of snap-off in throats) and advance through the centers of the pore space with different pore and throat filling conditions, leading to a cooperative filling. When these two mechanisms compete, different patterns arise. We study the effect of the correlation strength on the onset of each pattern. We do not take buoyancy forces into account.

scholarly journals Cubic three-dimensional hybrid silica solids for nuclear hyperpolarization

2016 ◽  
Vol 7 (11) ◽  
pp. 6846-6850 ◽  
Author(s):  
D. Baudouin ◽  
H. A. van Kalkeren ◽  
A. Bornet ◽  
B. Vuichoud ◽  
L. Veyre ◽  
...  
Keyword(s):  
Network Architecture ◽  
Three Dimensional ◽  
Porous Network ◽  
Hybrid Silica ◽  
Hybrid Silicas

Porous network architecture of hybrid silicas containing TEMPO radicals along their pores is key for increased hyperpolarization performances.

scholarly journals Electrodeposition polyaniline nanofiber on the PEDOT:PSS-coated SiNWs for high performance supercapacitors

2021 ◽  
Author(s):  
Xiaojuan Shen ◽  
Xuan Zhang ◽  
Tongfei Wang ◽  
Songjun Li
Keyword(s):  
High Performance ◽  
Deposition Time ◽  
Three Dimensional ◽  
Pani Film ◽  
Porous Network ◽  
Polyaniline Nanofibers ◽  
Temperature Method ◽  
Solution Methods ◽  
Polyaniline Nanofiber ◽  
Silicon Based

Abstract In this article, a novel silicon-based electrode was designed with the facile solution methods. With the modification of highly conductive PEDOT:PSS layer on the SiNWs by the spin-coated method (SiNWs-PSS), three-dimensional (3D) porous network polyaniline nanofibers (PANI) film was uniformly electrodeposited on the silicon surface (SiNWs-PSS@PANI). The sheet resistances of the PEDOT:PSS layer with different surfactants as well as the deposition time of the PANI were investigated. After optimization, the fabricated SiNWs-PSS@PANI electrode displayed high capacitance about 301.71 mF cm-2 at the current density of 1mA cm-2, which enhanced ~29 fold comparing to 10.18 mF cm-2 of electrode without the PEDOT:PSS layer between the SiNWs and PANI (SiNWs@PANI), outperforming most values of the reported silicon-based electrodes. The electrode designed in this paper provides a new idea to fabricate high-performance of silicon-based micro-supercapacitors with the simple and low-temperature method.

scholarly journals Nanocellulose-Based Patches Loaded with Hyaluronic Acid and Diclofenac towards Aphthous Stomatitis Treatment

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 628 ◽  
Author(s):  
João P. F. Carvalho ◽  
Ana C. Q. Silva ◽  
Verónica Bastos ◽  
Helena Oliveira ◽  
Ricardo J. B. Pinto ◽  
...  
Keyword(s):  
Hyaluronic Acid ◽  
In Vitro Release ◽  
Three Dimensional ◽  
Human Keratinocytes ◽  
Controlled Drug Release ◽  
Dynamic Mechanical Properties ◽  
Aphthous Stomatitis ◽  
Release Mechanism ◽  
Porous Network

Nanostructured patches composed of bacterial nanocellulose (BNC), hyaluronic acid (HA) and diclofenac (DCF) were developed, envisioning the treatment of aphthous stomatitis. Freestanding patches were prepared via diffusion of aqueous solutions of HA and DCF, with different concentrations of DCF, into the wet BNC three-dimensional porous network. The resultant dual polysaccharides-based patches with a nanostructured morphology present thermal stability up to 200 °C, as well as good dynamic mechanical properties, with a storage modulus higher than 1.0 GPa. In addition, the patches are non-cytotoxic to human keratinocytes (HaCaT cells), with a cell viability of almost 100% after 24 h. The in vitro release profile of DCF from the patches was evaluated in simulated saliva, and the data refer to a diffusion- and swelling-controlled drug-release mechanism. The attained results hint at the possibility of using these dual polysaccharides-based oral mucosal patches to target aphthous stomatitis.

Shape-controlled MnO2 as a sulfur host for high performance lithium–sulfur batteries

2020 ◽  
Vol 44 (26) ◽  
pp. 11365-11372
Author(s):  
You Ge ◽  
Ping Chen ◽  
Wenjing Zhang ◽  
Qi Shan ◽  
Yanan Fang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Network Structure ◽  
High Performance ◽  
Three Dimensional ◽  
Porous Network ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Sulfur Host ◽  
Shape Controlled ◽  
Lithium Sulfur

The three-dimensional porous network structure self-assembled from birnessite-type MnO2 flakes and urchin-like structure composed of MnO2 nanotubes was fabricated by a convenient one-step hydrothermal method as the sulfur scaffold for high performance lithium–sulfur batteries.

scholarly journals Analysis of Three-dimensional Porous Network Structure of Li-ion Battery Electrodes

2015 ◽  
Vol 83 (1) ◽  
pp. 2-6 ◽  
Author(s):  
Hitoshi FUKUMITSU ◽  
Kenji TERADA ◽  
Shogo SUEHIRO ◽  
Katsuhiko TAKI ◽  
Yongsung CHEON
Keyword(s):  
Network Structure ◽  
Three Dimensional ◽  
Li Ion Battery ◽  
Porous Network ◽  
Li Ion

Constructing a novel three-dimensional scaffold with mesoporous TiO2 nanotubes for potential bone tissue engineering

2015 ◽  
Vol 3 (27) ◽  
pp. 5595-5602 ◽  
Author(s):  
Yizao Wan ◽  
Peng Chang ◽  
Zhiwei Yang ◽  
Guangyao Xiong ◽  
Ping Liu ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bacterial Cellulose ◽  
Bone Tissue ◽  
Tio2 Nanotubes ◽  
Sol Gel ◽  
Three Dimensional ◽  
Mesoporous Tio2 ◽  
Tissue Engineering Scaffold ◽  
Porous Network

A novel 3D porous network-structured tissue engineering scaffold built of mesoporous TiO2 nanotubes has been synthesized via the bacterial cellulose-templated sol–gel route followed by calcination.

Nanoporous Metals for Catalytic and Optical Applications

MRS Bulletin ◽  
2009 ◽  
Vol 34 (8) ◽  
pp. 569-576 ◽  
Author(s):  
Yi Ding ◽  
Mingwei Chen
Keyword(s):  
Optical Properties ◽  
Fuel Cell ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Functional Materials ◽  
Porous Network ◽  
Highly Active ◽  
Wide Range ◽  
Nanoporous Metals

AbstractNanoporous metals (NPMs) made by dealloying represent a class of functional materials with the unique structural properties of mechanical rigidity, electrical conductivity, and high corrosion resistance. They also possess a porous network structure with feature dimensions tunable within a wide range from a few nanometers to several microns. Coupled with a rich surface chemistry for further functionalization, NPMs have great potential for applications in heterogeneous catalysis, electrocatalysis, fuel cell technologies, biomolecular sensing, surface-enhanced Raman scattering (SERS), and plasmonics. This article summarizes recent advances in some of these areas and, in particular, we focus on the discussion of microstructure, catalytic, and optical properties of nanoporous gold (NPG). With advanced electron microscopy, three-dimensional tomographic reconstructions of NPG have been realized that yield quantitative characterizations of key morphological parameters involved in the intricate structure. Catalytic and electrocatalytic investigations demonstrate that bare NPG is already catalytically active for many important reactions such as CO and glucose oxidation. Surface functionalization with other metals, such as Pt, produces very efficient electrocatalysts, which have been used as promising fuel cell electrode materials with very low precious metal loading. Additionally, NPG and related materials possess outstanding optical properties in plasmonics and SERS. They hold promise to act as highly active, stable, and economically affordable substrates in high-performance instrumentation applications for chemical inspection and biomolecular diagnostics. Finally, we conclude with some perspectives that appear to warrant future investigation.

scholarly journals Fabrication and Multiscale Structural Properties of Interconnected Porous Biomaterial for Tissue Engineering by Freeze Isostatic Pressure (FIP)

2018 ◽  
Vol 9 (3) ◽  
pp. 51 ◽  
Author(s):  
Mythili Prakasam ◽  
Ali Chirazi ◽  
Grzegorz Pyka ◽  
Anna Prokhodtseva ◽  
Daniel Lichau ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Mechanical Strength ◽  
Cell Attachment ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
High Strength ◽  
Processing Parameters ◽  
Fabrication Technology ◽  
Porous Network ◽  
Pore Connectivity

Biomaterial for tissue engineering is a topic of huge progress with a recent surge in fabrication and characterization advances. Biomaterials for tissue engineering applications or as scaffolds depend on various parameters such as fabrication technology, porosity, pore size, mechanical strength, and surface available for cell attachment. To serve the function of the scaffold, the porous biomaterial should have enough mechanical strength to aid in tissue engineering. With a new manufacturing technology, we have obtained high strength materials by optimizing a few processing parameters such as pressure, temperature, and dwell time, yielding the monolith with porosity in the range of 80%–93%. The three-dimensional interconnectivity of the porous media through scales for the newly manufactured biomaterial has been investigated using newly developed 3D correlative and multi-modal imaging techniques. Multiscale X-ray tomography, FIB-SEM Slice & View stacking, and high-resolution STEM-EDS electronic tomography observations have been combined allowing quantification of morphological and geometrical spatial distributions of the multiscale porous network through length scales spanning from tens of microns to less than a nanometer. The spatial distribution of the wall thickness has also been investigated and its possible relationship with pore connectivity and size distribution has been studied.

Sign in / Sign up

Export Citation Format

Share Document