Results 71 to 80 of about 1,709 (262)

A New Vibration Absorber Design for Under-Chassis Device of a High-Speed Train

Shock and Vibration, 2017
To realize the separation of vertical and lateral stiffness of the under-chassis device, a new type of vibration absorber is designed by using the negative stiffness of the disc spring in parallel with the rubber component.
Yu Sun, Jinsong Zhou, Dao Gong, Wenjing Sun, Zhanghui Xia   +4 more
doaj   +1 more source

Dynamic Characteristics of a Gyroscope and a Vibration Absorber

Transactions of the Japan Society of Mechanical Engineers, 1975
A two-degree-of-freedom gyroscope can't preserve its original direction when a housing on which the gyroscope is mounted oscillates. This problem has been dealt with by many people, but their works have been in want of universality in condition. In this paper, authors discuss the motion of a gyroscope mounted on a housing oscillating about an axis ...
MATSUDA, Masayasu, OGAWA, Kiyoshi
openaire   +3 more sources

Halide Perovskite Integrated Photovoltaic Cathodes Incorporating Pt on ZIF‐8‐Derived Carbon for Solar Hydrogen Production

Advanced Functional Materials, EarlyView.
A low‐Pt catalyst supported on zeolitic imidazolate framework (ZIF‐8)‐derived porous carbon and graphite is integrated with a halide perovskite photovoltaic, yielding cathodes that achieve a high photocurrent density (∼20 mA cm−2) under simulated sunlight and exhibit remarkable stability in acidic media over several days, thereby demonstrating a ...
Na Yeong Oh, Woo Jin Mun, Kamran Dastafkan, Matyas Daboczi, Hongki Kim, Humza Bhatti, Eunyoung Hong, Minzhi Chen, Yongqi Huang, Jin Hyuk Kim, Nicola Gasparini, Jong Hak Kim, Salvador Eslava   +12 more
wiley   +1 more source

A Ball-Contacting Dynamic Vibration Absorber with Adjustable Stiffness and Nonlinear Characteristics

Aerospace
Structural vibration has always been a major concern in the engineering field. A dynamic vibration absorber in the form of contacts with adjustable stiffness (CDVA) offers effective vibration suppression and can improve conventional dynamic vibration ...
Ziqiang Hu, Lei Wei, Lin Yang, Yansong Wang, Yuanpeng Fan   +4 more
doaj   +1 more source

Si‐Doped Nanocrystalline Diamond as Highly Sensitive Luminescence Thermometer for the Physiological Temperature Range

Advanced Functional Materials, EarlyView.
In this work, diamonds with negative charged silicon‐vacancy (SiV−) centers have been designed for use as thermometers in biomedical applications. Multiparametric analysis of the emission characteristics of the SiV− centers provides extraordinary sensitivity for temperature detection in the physiological temperature range.
María Gragera, Iván Carrillo‐Berdugo, Josue Millán, Paulius Pobedinskas, Antonio Freire, Ken Haenen, Javier Navas   +6 more
wiley   +1 more source

Tannic Acid‐Modified Cellulose Nanofiber Reinforced Polymerizable Eutectogels for High‐Performance Stretchable Strain Sensors

Advanced Functional Materials, EarlyView.
A polymerizable deep eutectic solvent is reinforced with tannic acid‐modified cellulose nanofibers to construct a hierarchical dynamic eutectogel network. Synergistic covalent and reversible interactions impart ultrahigh stretchability, high ionic conductivity, broad temperature tolerance, self‐healing, and strong adhesion, enabling robust wearable ...
Huang Wu, Yang Hu, Youmin Tuo, Weide Zhang, Nanzhu Bao, Haitao Wu, Zhuangzhuang Chu, Yunhua Chen, Tao Wang, Teng Yuan, Hongbo Zeng, Zhuohong Yang   +11 more
wiley   +1 more source

H_∞ Optimization of Three-Element-Type Dynamic Vibration Absorber with Inerter and Negative Stiffness Based on the Particle Swarm Algorithm. [PDF]

Entropy (Basel), 2023
Gao T, Li J, Zhu S, Yang X, Zhao H.
europepmc   +1 more source

Dopant Distribution in Ga‐Implanted CdO—A Correlative Microscopy and Molecular Dynamics Study

Advanced Functional Materials, EarlyView.
This work demonstrates that ion implantation offset angle could modulate carrier concentration and mobility in cadmium oxide thin films. Combining correlative microscopy workflow and molecular dynamics simulations, this study reveals the control of interfacial cluster density with tailoring implantation angles, and the optimum offset angle that ...
Morvarid Ghorbani, Bhaveshkumar Kamaliya, Maxwell J. Tolchin, Ryan W. Spangler, Youngji Kim, Joshua D. Caldwell, Jon‐Paul Maria, Nabil D. Bassim   +7 more
wiley   +1 more source

Analysisof the Vibration Reduction Characteristics of Boring Bar with A Variable Mass Dynamic Vibration Absorber

Journal of Harbin University of Science and Technology, 2018
In the boring process the boring bar in the cantilever state is used，which reduces stiffness of the boring bar. Vibration is easy to be occurred，and the vibration affects the machining precision and surface quality.
LIU Qiang, LIU Xian-li, WU Shi, YANG Lin, LI Rong-yi, YANG Hao   +5 more
doaj   +1 more source

Ultrafast Thermal Shock Synthesis of CuNiSnLa Medium‐Entropy Metallic Glass for Sustainable Nitrogen Fixation via Plasma‐Coupled Electrocatalysis

Advanced Functional Materials, EarlyView.
This work introduces an ultrafast thermal shock strategy to synthesize a CuNiSnLa medium‐entropy metallic glass (MEMG). The rapid heating and cooling process generates a robust, highly active catalyst for electrocatalytic nitrate reduction to ammonia (NRA).
Hongbo Chen, Peng‐Jun Deng, Yang Liu, Shenglong Huang, Shuo Sun, Haoxuan Li, Jiajia Lu, Panagiotis Tsiakaras   +7 more
wiley   +1 more source