Results 111 to 120 of about 9,219 (344)

Hydraulic Fracturing in Transversely Isotropic Elastic Solids [PDF]

open access: yes, 2023
Hydraulic fracturing (HF) is a widely employed technique for stimulating low-permeable underground reservoirs to enhance hydrocarbon production. Current HF models for the design of industrial HF treatments commonly assume fractures grow in an isotropic ...
Li, Boshen
core  

Wireless, Adaptable and Fully Implantable Battery‐powered Devices for Optical Stimulation of the Spinal Cord in Small Rodents

open access: yesAdvanced Science, EarlyView.
Current technologies for spinal cord optogenetic stimulation rely on external power sources and face reliability constraints in freely behaving animals. Here, a fully implantable, battery‐powered optoelectronic device is introduced, enabling operation in any selected environment with wireless recharging for months‐long stimulation.
Shahriar Shalileh   +8 more
wiley   +1 more source

Reflection coefficients for transversely isotropic media

open access: yes, 1995
Orientations of vertical fractures (i.e., transversely isotropic with axis of symmetry horizontal) can be detected using the Amplitude-Versus-Offset (AVO) response for the reflected p-waves.
Al-Otaibi, Mohammed Ghareeb
core  

Impedance‐Matched High‐Overtone Thickness‐Shear Bulk Acoustic Resonators With Scalable Mode Volume

open access: yesAdvanced Science, EarlyView.
A bottom‐electrode‐free high‐overtone bulk acoustic resonator is achieved by lateral excitation of antisymmetric thickness‐shear modes on a lithium‐niobate‐on‐silicon platform. Planar electrode geometry eliminates conventional loading along the resonance path and confines acoustic energy within the electrode gap.
Zi‐Dong Zhang   +7 more
wiley   +1 more source

Isotropic modeling of transversely isotropic wedge indentation

open access: yes, 1977
No page 20The need has become evident for a more thorough understanding of the causes of hole deviation when drilling through stratified formations. The approach to this problem herein is to analyze the forces between the bit teeth and rock and how they ...
Marshall, Tom Stanley
core  

Beyond Percolation: Graphene‐Enabled Network Reinforcement Enhances Thermal Transport in Paraffin Phase‐Change Composites

open access: yesAdvanced Science, EarlyView.
Expanded‐graphite/graphene‐nanoplatelet hybrids deliver a near‐order‐of‐magnitude thermal‐conductivity enhancement in paraffin phase‐change materials. A microCT‐informed 3D modeling framework resolves the percolating EG backbone and captures sub‐voxel GNP enrichment, quantitatively linking microstructure to heat flow and revealing a graphene‐enabled ...
Thomas Hoke   +4 more
wiley   +1 more source

3D elastic tensor imaging in weakly transversely isotropic soft tissues

open access: yesPhysics in Medicine and Biology, 2018
We present herein 3D elastic tensor imaging (3D ETI), an ultrasound-based volumetric imaging technique to provide quantitative volumetric mapping of tissue elastic properties in weakly elastic anistropic media.
M. Correia   +5 more
semanticscholar   +1 more source

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