Results 11 to 20 of about 27,265 (267)

Superhydrophobic Drag-Reduction Spherical Bearing Fabricated by Laser Ablation and PEI Regulated ZnO Nanowire Growth

Scientific Reports, 2017
The resistance of the bearing is a significant factor affecting the performance of the ball-disk rotor gyroscope. The micro and nano combined surface with low surface energy material modifications can be hydrophobic.
Rui Weng, Haifeng Zhang, Yanjing Tuo, Yang Wang, Xiaowei Liu   +4 more
doaj   +1 more source

A Quick Start Method for MEMS Disk Resonant Gyroscope

Sensors, 2021
High-precision disk resonator gyroscope has a high quality factor in order to improve the performance of the gyroscope, as the high quality factor can lead to a long starting time.
Xiaodong Xu, Xiaowei Liu, Yufeng Zhang
doaj   +1 more source

A Clean and Facile Synthesis Strategy of MoS2 Nanosheets Grown on Multi-Wall CNTs for Enhanced Hydrogen Evolution Reaction Performance

Scientific Reports, 2017
Unique hybrid nanostructure, which consists of multi-wall carbon nanotube (MWCNT) stems and MoS2 nanosheet (NS) leaves, are prepared by a hydrothermal method.
Jiamu Cao, Jing Zhou, Yufeng Zhang, Xiaowei Liu   +3 more
doaj   +1 more source

Boron Nitride Nanoribbons Grown by Chemical Vapor Deposition for VUV Applications

Micromachines, 2022
The fabrication process of vacuum ultraviolet (VUV) detectors based on traditional semiconductor materials is complex and costly. The new generation of wide-bandgap semiconductor materials greatly reduce the fabrication cost of the entire VUV detector ...
Jiandong Hao, Ling Li, Peng Gao, Xiangqian Jiang, Chuncheng Ban, Ningqiang Shi   +5 more
doaj   +1 more source

A ΣΔ Closed-Loop Interface for a MEMS Accelerometer with Digital Built-In Self-Test Function

Micromachines, 2018
Sigma-delta (ΣΔ) closed-loop operation is the best candidate for realizing the interface circuit of MEMS accelerometers. However, stability and reliability problems are still the main obstacles hindering its further development for high-end ...
Dongliang Chen, Xiaowei Liu, Liang Yin, Yinhang Wang, Zhaohe Shi, Guorui Zhang   +5 more
doaj   +1 more source

Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester

Micromachines, 2020
With the development of low-power technology in electronic devices, the wireless sensor network shows great potential in applications in health tracing and ocean monitoring.
Mingxue Li, Huichao Deng, Yufeng Zhang, Kexin Li, Shijie Huang, Xiaowei Liu   +5 more
doaj   +1 more source

Piezoelectrically Driven and Sensed Micromirrors with Extremely Large Scan Angles and Precise Closed-Loop Control

Proceedings, 2017
This paper reports piezoelectrically driven and sensed micromirrors achieving extremely large total optical scan angle of 106° and high frequency of 45 kHz at 22 V.
Shanshan Gu-Stoppel, Thorsten Giese, Hans-Joachim Quenzer, Ulrich Hofmann, Wolfgang Benecke   +4 more
doaj   +1 more source

Eliminating viscosity bias in lateral flow tests

Microsystems & Nanoengineering, 2021
Despite the widespread application of point-of-care lateral flow tests, the viscosity dependence of these assay results remains a significant challenge.
Daniel M. Kainz, Bastian J. Breiner, Susanna M. Früh, Tobias Hutzenlaub, Roland Zengerle, Nils Paust   +5 more
doaj   +1 more source

Friction Reduction for a Rotational Gyroscope with Mechanical Support by Fabrication of a Biomimetic Superhydrophobic Surface on a Ball-Disk Shaped Rotor and the Application of a Water Film Bearing

Micromachines, 2017
Friction between contacting surfaces of metal materials restricts the application of mechanical support in the high-precision inertial device of a rotational gyroscope. Instead, a disk- or ring-shaped rotor is electrostatically or magnetically suspended.
Dianzhong Chen, Xiaowei Liu, Haifeng Zhang, Hai Li, Rui Weng, Ling Li, Zhongzhao Zhang   +6 more
doaj   +1 more source

Amorphous Silicon-Germanium Films with Embedded Nanocrystals for Thermal Detectors with Very High Sensitivity

Journal of Nanotechnology, 2016
We have optimized the deposition conditions of amorphous silicon-germanium films with embedded nanocrystals in a plasma enhanced chemical vapor deposition (PECVD) reactor, working at a standard frequency of 13.56 MHz.
Cesar Calleja, Alfonso Torres, Pedro Rosales-Quintero, Mario Moreno   +3 more
doaj   +1 more source