Results 21 to 30 of about 3,213 (251)

Polymer Brushes Govern Defect‐Selective Oxidative Etching of Penta‐Twinned Gold Nanorods

Angewandte Chemie, EarlyView.
Polymer brushes act as active interfacial regulators of oxidative etching, directing it to crystallographic defects. In penta‐twinned gold nanorods, defect–ligand interplay localizes etching to defect regions and induces surface corrugations on the long nanorod sides. This work establishes a framework for programmable nanoengineering of the surfaces of
Tianyi Wu, Irina Koriakina, Feng Li, Zhi‐bo Yang, Yan Zhang, Zitao Chen, Da Wang, Zhihong Nie, Kun Liu, Eugenia Kumacheva   +9 more
wiley   +2 more sources

MHD Prandtl fluid flow past an isothermal permeable sphere with slip effects

Case Studies in Thermal Engineering, 2019
This study examines the steady and two-dimensional flow of non-Newtonian Prandtl-Eyring fluid over an isothermal sphere under buoyancy forces and non-Darcy porous media.
C.H. Amanulla, S. Saleem, Abderrahim Wakif, M.M. AlQarni   +3 more
doaj   +1 more source

Numerical study of natural convection of fluid with temperature-dependent viscosity inside a porous cube under non-uniform heating using local thermal non-equilibrium approach

International Journal of Thermofluids, 2023
A numerical investigation of thermogravitational convection within porous cubical region under the non-uniform heating of vertical wall has been performed. The working liquid has a temperature-dependent viscosity according to exponential relation.
Marina S. Astanina, Mikhail A. Sheremet
doaj   +1 more source

EFFECT OF NON-DARCY FLOW COEFFICIENT VARIATION DUE TO WATER VAPORIZATION ON WELL PRODUCTIVITY OF GAS CONDENSATE RESERVOIRS [PDF]

Brazilian Journal of Chemical Engineering, 2015
Well productivity of gas condensate reservoirs is highly affected by near-wellbore phenomena. Inertial force resulting from convective acceleration of fluid particles in the medium, as well as viscous force, determines the flow of gas through porous media at high velocity.
Sheikhi, E., Hashemi, A., Kaffash, A.
openaire   +3 more sources

Natural Convection from a Permeable Sphere Embedded in a Variable Porosity Porous Medium Due to Thermal Dispersion

Nonlinear Analysis, 2007
The laminar natural convection boundary-layer flow of an electricallyconducting fluid from a permeable sphere embedded in a porous medium with variable porosity is considered.
S. M. M. El-Kabeir, M. A. El-Hakiem, A. M. Rashad   +2 more
doaj   +1 more source

A productivity evaluation method of gas wells in condensate gas reservoirs with low permeability

Youqicang pingjia yu kaifa, 2021
When the conventional binomial productivity equation is used to analyze the deliverability of the gas wells in a low permeability thick layer condensate gas reservoir with high condensate content in Bohai Sea, the negative deliverability equation ...
TAN Xianhong, LIANG Bin, WANG Shuai, TIAN Bo, PENG Shiqiang, LI Nan, XIA Yang   +6 more
doaj  

Dynamic effect of capillary pressure in low permeability reservoirs

Petroleum Exploration and Development, 2012
The dynamic effect of capillary pressure in oil-water two-phase percolation flow in low permeability reservoirs was investigated by experiment and numerical simulation.
Shubao TIAN, Gang LEI, Shunli HE, Limin YANG   +3 more
doaj   +1 more source

Influence of Stress Jump Condition at the Interface Region of a Two-Layer Nanofluid Flow in a Microchannel with EDL Effects

Nanomaterials, 2023
The influence of stress jump conditions on a steady, fully developed two-layer magnetohydrodynamic electro-osmotic nanofluid in the microchannel, is investigated numerically.
Muhammad Raees ul Haq, Ammarah Raees, Hang Xu, Shaozhang Xiao   +3 more
doaj   +1 more source

A Pollen‐Enhanced Bionic Mechanoreceptor Induced by Asymmetric Ionic Convection in Hydrogel for Sensory‐Augmented Prostheses

Advanced Science, EarlyView.
This work proposed a pollen‐enhanced bionic mechanoreceptor based on ionic convection. Leveraging the ion anchoring effect of the pollen particle, the output performance could be ∼12 times higher than the original state. By employing deep learning models as AI brains, the feasibility of a sensory‐augmented prosthesis consisting of a pollen‐enhanced ...
Zi Hao Guo, Jingyu Deng, Yanzhang Xu, Chenchen Zhou, Yangshi Shao, Xiong Pu, Munho Kim, Namjoon Cho   +7 more
wiley   +1 more source

Magnetoelectric Nanoparticle‐Based Wireless Brain–Computer Interface: Underlying Physics and Projected Technology Pathway

Advanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) enable fully wireless, minutely invasive neuromodulation, and potentially neural recording, by converting magnetic into electric and, conversely, electric into magnetic fields, respectively, at high spatiotemporal resolution.
Elric Zhang, Max Shotbolt, Mostafa Abdel‐Mottaleb, Shawnus Chen, Victoria Andre, Jieyuan Tian, Jonathan Shulgach, Max Murphy, Brian Noga, Ping Liang, Darcy Griffin, Douglas Weber, Marta Pardo, Salvador Pane, Sakhrat Khizroev   +14 more
wiley   +1 more source