Results 51 to 60 of about 6,679 (242)

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Parameter optimization and engineering test of liquid CO2 injection in bedding boreholes for coal seam CH4 displacement

Meikuang Anquan
To improve the drainage efficiency of outburst and low-permeability coal seam gas, this study takes the liquid CO2 displacing coal seam CH4 technology as the core, and explores the influence of CO2 injection pressure parameters and borehole spacing on ...
Chao SONG, Xiaokun CHEN, Yong XU
doaj   +1 more source

Ultra-High-Pressure Hydraulic Slitting Pressure Relief and Penetration Enhancement Technology and Equipment for Soft Coal Seams

Geofluids, 2022
There is a “bottleneck effect” in the extraction process of ordinary boreholes. It is crucial to enhance the permeability of the boreholes. In this paper, a set of ultra-high-pressure water jet-based drilling and slotting integrated equipment was ...
Xingang Niu, Yi Zhao, Ke Li, Yongjiang Zhang   +3 more
doaj   +1 more source

Seta‐Inspired Mechano‐Intelligent Janus Bandage with Coordinated Adhesion–Contraction for Minimizing Scarring

Advanced Materials, EarlyView.
We developed a bioinspired mechano‐intelligent Janus bandage (MIB) with a hydrophobic flat exterior and a hydrophilic interior featuring gecko‐mimicking wedged microstructures, fabricated via micromolding and anisotropic plasma treatment. The MIB dynamically synchronizes adhesion and contraction, enabling precise force modulation.
Di Suo, Yuhe Yang, Shuai Zhao, Ho‐Pan Bei, Avery Chik‐Him Lam, Wei‐Qiang Tan, Kenneth Kak‐yuen Wong, Xin Zhao   +7 more
wiley   +1 more source

Numerical Analysis and Prediction of Coal Mine Methane Drainage Based on Gas–Solid Coupling Model

, 2019
Methane drainage using boreholes is one of the most effective means of preventing coal mine methane disasters. However, the distributions of stress and permeability around the borehole and the effective influence radius of methane drainage are not ...
Tang, Mingyun, Zheng, Pengxian, Zheng, Chunshan, Hu, Zuxiang, Mingyun Tang, Dai, Guanglong, Chunshan Zheng, Zuxiang Hu, Jinhui Wang, Pengxian Zheng, Guanglong Dai, Wang, Jinhui   +11 more
core   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source

Research on the Optimized Layout of Boreholes in Low-Permeability Coal Seams to Eliminate Gas Drainage Blank Zones

Geofluids
With the increasing depth and complexity of coal mining in China, the gas control in coal seam has become increasingly important. Gas predrainage through boreholes is an effective means of gas control, and the effective drainage radius of boreholes is a ...
Jingjing Huo, Hao Sun, Xiaofeng Jiang
doaj   +1 more source

Parameter Optimization of Constant Pressure Grouting Technology for Borehole Sealing with Inorganic Noncondensable Material in Tectonic Coalbed of South China

Geofluids, 2023
To solve the problem of a rapid attenuation of gas concentration along with drainage borehole collapse in the tectonic coalbeds of South China, a constant pressure grouting technology with inorganic, noncondensable material was proposed.
Zhao Pengtao, Wang Haiqiao, Wang Long, Wang Xinlei, Ma Hongyu   +4 more
doaj   +1 more source

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

Advanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng, Peng Zhang, Gang Qiu, Ting‐Hsun Yang, Chang Niu, Yaochen Li, Wenqiang Cui, Yang Feng, Peide D. Ye, Ke He, Kai Chang, Kang L. Wang   +11 more
wiley   +1 more source

Optimization of multi-hole hydraulic cutting combined extraction parameters under superposition effect

Gong-kuang zidonghua, 2023
In the process of hydraulic cutting in low permeability and high gas coal seams, there are problems such as unclear cutting disturbance range and unclear optimal hole spacing for cutting drilling.
NI Xing
doaj   +1 more source