Results 31 to 40 of about 654 (167)

Miniaturized Magnetic Tip Design for Endoluminal Vine Robot Navigation

Advanced Robotics Research, EarlyView.
A magnetic tip mount is designed for a miniaturized 7 mm soft‐growing vine robot to enable wireless magnetic steering and onboard imaging, while preserving a 3 mm working channel. The internal–external ring magnets design balances magnetic attachment with low eversion pressure. Experiments demonstrate ±90° steering, 34 mm bending radius, and successful
Andrea Yanez Trujillo, Joshua Davy, James H. Chandler, James Avery, Pietro Valdastri   +4 more
wiley   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

Deep Underground Science and Engineering
Wellbore drilling disturbs the equilibrium stress state in the rock mass, resulting in stress redistribution around the opening. Wellbore stability in the altered stress state is vital for engineering applications, as the wellbore instability results in ...
Ravindra K. Burnwal, Aditya Singh
doaj   +1 more source

Trigger mechanism and dynamic causes of the Taiwan earthquake sequence on September 17, 2022

Dizhi lixue xuebao, 2023
On September 17th and 18th, 2022, two earthquakes struck Taiwan Province of China in Taitung County and Hualien County, respectively, measuring MS6.5 and MS6.9 in magnitude, followed by multiple aftershocks.
HUANG Shaohua, WAN Yongge, FENG Gan, LI Xiao, GUAN Zhaoxuan   +4 more
doaj   +1 more source

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Influence of Injection-Induced Secondary Fault Slip on the Stability of an Adjacent Critically Stressed Fault

Applied Sciences
Fluid injection in deep reservoirs can induce fault reactivation and seismicity, posing challenges for geothermal and subsurface energy development. This study investigates the mechanical interaction between two adjacent non-intersecting faults under ...
Wenchong Shan, Wensheng Tang, Hongliang Zhang, Jinfeng Li, Qin Zhu, Yueqiang Ma   +5 more
doaj   +1 more source

Centrifugal loading finite element method for slope stability under damage-seepage coupling effect

Yantu gongcheng xuebao, 2019
An elasto-plastic damage seepage coupling model for rock based on the Mohr-Coulomb criterion is established to analyze slope stability. The stress return method in the principal stress space is given for the Mohr-Coulomb criterion under damage effect to ...
XU Meng-fei 1, JIANG An-nan 1, DUAN Long-mei 2, JIAO Ming-wei 2, HU Xue-feng 2
doaj   +1 more source

Influence of intermediate principal stress on mechanics and acoustic emission characteristics of coal rock

Meikuang Anquan, 2021
In order to study the safety problems caused by coal mine excavation, the self-developed ground acoustic process simulation test system was used to carry out true triaxial loading and unloading tests of coal rock under different intermediate principal ...
PENG Yanyan, DENG Haoxiang, FAN Xiao
doaj   +1 more source

Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics

Advanced Science, EarlyView.
Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Dongyu Bai, Ri He, Junxian Liu, Liangzhi Kou   +3 more
wiley   +1 more source

Developing a geomechanical model to predict breakdown pressure in a vertical borehole using failure analysis: a case study

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Breakdown is an important process in geomechanics; a very complex process in hydraulic fracturing which has been the subject of extensive research in the literature. There exist several models in the literature for predicting the breakdown pressure.
Majid Jamshidian, Mostafa Mansuri Zadeh, Omid Mohammadzadeh, Mohammad Abdideh   +3 more
doaj   +1 more source