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1. Effect of flow profiles on the flow subjected to oscillation forcing: An example of droplet mobilization in constricted tubes

Author:
Zeng, Chao; Deng, Wen; Fan, Jing; Zhang, Yandong
Source:
Journal of hydrology 2020 v.583 pp. 124295
ISSN:
0022-1694
Subject:
porous media,   etc   ; droplets; hydrology; viscosity;     Show all 4 Subjects
Abstract:
... Poiseuille flow was widely assumed in the analysis of fluid flow in porous media due to its simple form. It can describe the flow behavior at creeping flow conditions very well. However, errors were reported in the literature by the use of this parabolic velocity profile in some dynamic circumstances. The effect of velocity profiles on the capillary flow was discussed in this study when oscillatio ...
DOI:
10.1016/j.jhydrol.2019.124295

2. Determining the Mesh Size of Polymer Solutions via the Pore Size Distribution

Author:
Sorichetti, Valerio; Hugouvieux, Virginie; Kob, Walter
Source:
Macromolecules 2020 v.53 no.7 pp. 2568-2581
ISSN:
1520-5835
Subject:
porous media,   etc   ; equations; polymers; porosity;     Show all 4 Subjects
Abstract:
... In order to determine in polymeric systems the geometrical mesh size ξ, we simulate a solution of coarse-grained polymers with densities ranging from the dilute to the concentrated regime and for different chain lengths. We determine the monomer density fluctuation correlation length ξc from the monomer structure factor as well as the radial distribution function, showing that the identification ξ ...
DOI:
10.1021/acs.macromol.9b02166

3. Enhancement of bloody fingerprints on non-porous surfaces using Lac dye (Laccifer lacca)

Author:
Chingthongkham, Phawadol; Chomean, Sirinart; Suppajariyawat, Praew; Kaset, Chollanot
Source:
Forensic science international 2020 v.307 pp. 110119
ISSN:
0379-0738
Subject:
porous media,   etc   ; Kerria lacca; dyes;     Show all 3 Subjects
Abstract:
... It is important that fingermark enhancement techniques are safe and simple to carry out. Many chemicals are widely used to enhance and develop bloody fingermark. However, the use of natural products for fingermark detection and examination has several advantages and challenges. In this study, Lac dye (Laccifer lacca) was used to enhance bloody fingermarks on various types of non-porous and porous ...
DOI:
10.1016/j.forsciint.2019.110119

4. Evaporation versus imbibition in a porous medium

Author:
Van Engeland, Charlotte; Haut, Benoît; Spreutels, Laurent; Sobac, Benjamin
Source:
Journal of colloid and interface science 2020 v.576 pp. 280-290
ISSN:
0021-9797
Subject:
porous media,   etc   ; evaporation; gravity; liquids; prediction;     Show all 5 Subjects
Abstract:
... Predicting and controlling the liquid dynamics in a porous medium is of large importance in numerous technological and industrial situations. We derive here a general analytical solution for the dynamics of a flat liquid front in a porous medium, considering the combined effects of capillary imbibition, gravity and evaporation. We highlight that the dynamics of the liquid front in the porous mediu ...
DOI:
10.1016/j.jcis.2020.02.105

5. A facile fabrication of shape memory polymer nanocomposites with fast light-response and self-healing performance

Author:
Chen, Yi; Zhao, Xing; Luo, Chen; Shao, Yan; Yang, Ming-Bo; Yin, Bo
Source:
Composites 2020 v.135 pp. 105931
ISSN:
1359-835X
Subject:
porous media,   etc   ; irradiation; nanospheres; polymer nanocomposites;     Show all 4 Subjects
Abstract:
... Despite tremendous advances in the preparation of smart materials, it remains a great challenge to integrate shape memory and self-healing properties into one material system, which have received increasing interests because of their many potential applications. Herein, the PCL/TPU blends are prepared as shape memory matrix by simple solution blending. Then the polydopamine (PDA) nanospheres acted ...
DOI:
10.1016/j.compositesa.2020.105931

6. Structure-switchable mesoporous carbon hollow sphere framework toward sensitive microwave response

Author:
Cheng, Yan; Zhao, Huanqin; Zhao, Yue; Cao, Jieming; Zheng, Jing; Ji, Guangbin
Source:
Carbon 2020 v.161 pp. 870-879
ISSN:
0008-6223
Subject:
porous media,   etc   ; absorption; carbon; microstructure; polymerization; silica;     Show all 6 Subjects
Abstract:
... Mesoporous carbon hollow sphere (MCHS) is one of the most significant functional materials in various fields. Unfortunately, systematically regulating microstructure of MHCS has been rarely investigated so far. In this work, using one unique simultaneous-hydrolyzation-polymerization process, we are able to precisely control the morphology configurations of MCHS, including its shell thickness and i ...
DOI:
10.1016/j.carbon.2020.02.011

7. Correction: An NIR-responsive mesoporous silica nanosystem for synergetic photothermal-immunoenhancement therapy of hepatocellular carcinoma

Author:
Yang‡, Han; Liu‡, Hong-sheng; Hou, Wen; Gao, Jun-xiao; Duan, Yue; Wei, Daohe; Gong, Xiao-qun; Wang, Han-jie; Wu, Xiao-li; Chang, Jin
Source:
Journal of materials chemistry B 2020 v.8 no.15 pp. 3150
ISSN:
2050-7518
Subject:
porous media,   etc   ; hepatoma; nanotechnology; silica; therapeutics;     Show all 5 Subjects
Abstract:
... Correction for ‘An NIR-responsive mesoporous silica nanosystem for synergetic photothermal-immunoenhancement therapy of hepatocellular carcinoma’ by Han Yang et al., J. Mater. Chem. B, 2020, 8, 251–259. ...
DOI:
10.1039/d0tb90040k

8. Morphology control of metallic nanoparticles supported on carbon substrates in catalytic conditions

Author:
Magnin, Y.; Villermaux, E.; Amara, H.; Bichara, C.; Pellenq, R.J.M.
Source:
Carbon 2020 v.159 pp. 504-511
ISSN:
0008-6223
Subject:
porous media,   etc   ; carbon; catalytic activity; nanoparticles;     Show all 4 Subjects
Abstract:
... Metallic nanoparticles are highly reactive objects, often used for their catalytic properties which strongly depend on their shape and morphology. Here we show that controlling the wetting properties on a substrate enables one to control the nanoparticle’s shape, prevent their coalescence and maximize their surface reactivity. The highly ordered mesoporous carbon structures (CMK) are ideal to achi ...
DOI:
10.1016/j.carbon.2019.12.025

9. Covalent organic frameworks: emerging high-performance platforms for efficient photocatalytic applications

Author:
Wang, Guang-Bo; Li, Sha; Yan, Cai-Xin; Zhu, Fu-Cheng; Lin, Qian-Qian; Xie, Ke-Hui; Geng, Yan; Dong, Yu-Bin
Source:
Journal of materials chemistry A 2020 v.8 no.15 pp. 6957-6983
ISSN:
2050-7496
Subject:
porous media,   etc   ; energy conversion; photocatalysis; photocatalysts; semiconductors;     Show all 5 Subjects
Abstract:
... Covalent organic frameworks (COFs), as a new emerging class of highly crystalline advanced porous materials with fascinating structural tunability and diversity as well as the desired semiconductor properties, have gained significant attention as highly promising and efficient photocatalysts or designer platforms for a variety of photocatalytic applications in recent years; thus a comprehensive re ...
DOI:
10.1039/d0ta00556h

10. Quadrature-free discontinuous Galerkin method with code generation features for shallow water equations on automatically generated block-structured meshes

Author:
Faghih-Naini, Sara; Kuckuk, Sebastian; Aizinger, Vadym; Zint, Daniel; Grosso, Roberto; Köstler, Harald
Source:
Advances in water resources 2020 v.138 pp. 103552
ISSN:
0309-1708
Subject:
porous media,   etc   ; algorithms; equations; water resources;     Show all 4 Subjects
Abstract:
... Although discretizations of the shallow water equations (SWE) based on the discontinuous Galerkin (DG) method are well established, their computational performance still generally lags behind that of the finite volume discretizations. In explicit and semi-implicit time stepping schemes commonly used in connection with the SWE models, the most computationally expensive parts of a DG algorithm are t ...
DOI:
10.1016/j.advwatres.2020.103552

11. Wettability-Engineered Meshes for Gas Microvolume Precision Handling in Liquids

Author:
Bernardini, Jacopo; Sen, Uddalok; Jafari Gukeh, Mohamad; Asinari, Pietro; Megaridis, Constantine M.
Source:
ACS applied materials & interfaces 2020 v.12 no.15 pp. 18046-18055
ISSN:
1944-8252
Subject:
porous media,   etc   ; air; bubbles; porosity; wettability;     Show all 5 Subjects
Abstract:
... The interaction of rising gas bubbles with submerged air-repelling or air-attracting surfaces is relevant to various technological applications that rely on gas-microvolume handling or removal. This work demonstrates how submerged metal meshes with super air-attracting/repelling properties can be employed to manipulate microvolumes of air, rising buoyantly in the form of bubbles in water. Superaer ...
DOI:
10.1021/acsami.9b22284

12. An in-depth comparative study of three-dimensional angularity indices of general-shape particles based on spherical harmonic reconstruction

Author:
Su, Dong; Wang, Xiang; Wang, Xuetao
Source:
Powder technology 2020 v.364 pp. 1009-1024
ISSN:
0032-5910
Subject:
porous media,   etc   ; air; comparative study; powders;     Show all 4 Subjects
Abstract:
... An in-depth comparative study is conducted on four three-dimensional (3D) angularity indices, namely, the radius-based angularity index (AIᵣ), gradient-based angularity index (AIg), deviation angle-based angularity index (AId), and Gaussian curvature-based angularity index (AIG). An innovative modification is carried out to ensure that all the indices equal zero for spheres and ellipsoids. Each AI ...
DOI:
10.1016/j.powtec.2019.10.019

13. Effects of percolation on the effective conductivity of irregular composite porous media

Author:
Clark, Colin L.; Winter, C. Larrabee; Corley, Tim
Source:
Advances in water resources 2020 v.137 pp. 103507
ISSN:
0309-1708
Subject:
porous media,   etc   ; hydraulic conductivity; models; water resources;     Show all 4 Subjects
Abstract:
... We develop a phenomenological model for the effective conductivity of porous media that consist of two distinct materials characterized by different values of hydraulic conductivity. Our focus is two-fold: first, to relate the terms and parameters of macroscale conductivity to the spatial variability of local flow and conductivity observed in computational experiments, and second to develop a redu ...
DOI:
10.1016/j.advwatres.2020.103507

14. Pore-throat characterization of unconsolidated porous media using watershed-segmentation algorithm

Author:
Patmonoaji, Anindityo; Tsuji, Kento; Suekane, Tetsuya
Source:
Powder technology 2020 v.362 pp. 635-644
ISSN:
0032-5910
Subject:
porous media,   etc   ; algorithms; models; normal distribution; porosity;     Show all 5 Subjects
Abstract:
... Pore-throat characteristics of porous media play important roles in various flow processes. However, pore size distribution (PSD) and throat size distribution (TSD) of various porous media have rarely been reported. Watershed-segmentation (WS) is a promising pore-throat identification method. To avoid over- and under-segmentations, a trial-and-error method was devised and validated using artificia ...
DOI:
10.1016/j.powtec.2019.12.026

15. Three-dimensional microscale simulation of colloidal particle transport and deposition in chemically heterogeneous capillary tubes

Author:
Li, Yajie; Ahmadi, Azita; Omari, Aziz; Pu, Hongting
Source:
Colloids and surfaces 2020 v.586 pp. 124166
ISSN:
0927-7757
Subject:
porous media,   etc   ; Peclet number; hydrodynamics; models; probability;     Show all 5 Subjects
Abstract:
... The effect of surface chemical heterogeneity and hydrodynamics on particle transport and deposition in porous media was investigated by microscale simulations using a colloidal particle tracking model, called 3D-PTPO (Three-dimensional particle tracking model by Python® and OpenFOAM®) code. This work is aimed as a step toward modeling of transport and deposition in porous media idealized as a bund ...
DOI:
10.1016/j.colsurfa.2019.124166

16. Role and importance of surface heterogeneities in transport of particles in saturated porous media

Author:
Shen, Chongyang; Jin, Yan; Zhuang, Jie; Li, Tiantian; Xing, Baoshan
Source:
Critical reviews in environmental science and technology 2020 v.50 no.3 pp. 244-329
ISSN:
1547-6537
Subject:
porous media,   etc   ; energy; equations; sorption; statistical models;     Show all 5 Subjects
Abstract:
... Knowledge of particle deposition and transport in saturated porous media is of significant importance for various engineered applications and environmental concerns. Surface physical and chemical heterogeneities play a critical role in particle deposition because they can increase attachment in the primary minima of Derjaguin-Landau-Verwey-Overbeek (DLVO) interaction energy profile by reducing the ...
DOI:
10.1080/10643389.2019.1629800

17. Pore-scale visualization and characterization of viscous dissipation in porous media

Author:
Roman, Sophie; Soulaine, Cyprien; Kovscek, Anthony R.
Source:
Journal of colloid and interface science 2020 v.558 pp. 269-279
ISSN:
0021-9797
Subject:
porous media,   etc   ; momentum; oils; shear stress; viscosity;     Show all 5 Subjects
Abstract:
... The effects of mutual transfer of momentum between two immiscible flowing fluids in porous media are not well understood nor predictable yet. From considerations at the pore-scale, it should be possible to determine whether and to what extent interfacial viscous coupling effects are significant.We visualize the velocity distributions inside immobile globules of wetting phase (water) while a non-we ...
DOI:
10.1016/j.jcis.2019.09.072

18. Thiol-yne Click Post-Modification for the Synthesis of Chiral Microporous Organic Networks for Chiral Gas Chromatography

Author:
Cui, Yuan-Yuan; Yang, Cheng-Xiong; Yan, Xiu-Ping
Source:
ACS applied materials & interfaces 2020 v.12 no.4 pp. 4954-4961
ISSN:
1944-8252
Subject:
porous media,   etc   ; catalytic activity; gas chromatography;     Show all 3 Subjects
Abstract:
... Microporous organic networks (MONs) have shown great potential in diverse domains recently. However, the application of MONs in chiral separation or catalysis has been largely lagged due to the lack of chiral MONs and the challenge to synthesize chiral MONs. Here we report a facile thiol-yne click strategy to post-synthesize chiral MONs for the first application in chiral gas chromatography. Three ...
DOI:
10.1021/acsami.9b22023

19. Volume Averaging for Urban Canopies

Author:
Schmid, Manuel F.; Lawrence, Gregory A.; Parlange, Marc B.; Giometto, Marco G.
Source:
Boundary-layer meteorology 2019 v.173 no.3 pp. 349-372
ISSN:
0006-8314
Subject:
porous media,   etc   ; canopy; models;     Show all 3 Subjects
Abstract:
... When canopy flows are horizontally averaged to obtain mean profiles, the averaging operation can be defined either as an intrinsic average, normalized by the variable fluid volume, or as a superficial average, normalized by the total volume including solid canopy elements. Properties of spatial averages have been explored extensively in the context of flow through plant canopies, albeit with the a ...
DOI:
10.1007/s10546-019-00470-3
PubMed:
31708585
PubMed Central:
PMC6822781

20. Retraction: Mesoporous amorphous FeOF nanococoons for high-rate and long-life rechargeable sodium-ion batteries

Author:
Tong, Dong Ge
Source:
Journal of materials chemistry A 2019 v.7 no.35 pp. 20444
ISSN:
2050-7496
Subject:
porous media,   etc   ; batteries; chemistry;     Show all 3 Subjects
Abstract:
... Retraction of ‘Mesoporous amorphous FeOF nanococoons for high-rate and long-life rechargeable sodium-ion batteries’ by Shi Yan Fu et al., J. Mater. Chem. A, 2015, 3, 16716–16727. ...
DOI:
10.1039/c9ta90200g