Results 101 to 110 of about 1,446,654 (290)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Elastic–Plastic Modeling and Experimental Characterization of Granular Jamming Actuators

Advanced Engineering Materials, EarlyView.
Granular jamming enables rapid switching between soft and rigid mechanical states. Here, a reduced‐order elastic‐perfectly‐plastic beam framework captures pressure‐dependent loading, unloading, residual deformation, and hysteresis in jammed beams, while matching three‐point bending experiments across materials and geometries. The framework links design
Saheli Patel, Prashant K. Purohit, Jordan R. Raney   +2 more
wiley   +1 more source

Dynamics Modeling of a Rigid–Flexible Coupled Flapping-Wing Robot and Diffeomorphism-Based Disturbance Rejection Attitude-Constrained Control

Aerospace
Lightweight flapping-wing robots are affected by structural flexibility, wind disturbances, and static friction in basal passive joints during perching and attitude-holding tasks.
Guang Rong, Jingyuan Yang, Jinbao Chen, Jian Wang, Jianyuan Wang   +4 more
doaj   +1 more source

RESEARCH ON FLEXIBLE DRILL STRING VIBRATION INDUCED BY SONIC HARMONIC EXCITATION

, 2015
The undisturbed sampling of the overburden soil is attracting increased attention due to the rapid increases in the construction of large-scale domestic foundations and environmental protection engineering.
Bairu Xia, Yuanbiao Hu, Long Sun, Changgen Bu   +3 more
core   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Excitation-Dependent Multiple Fluorescence of a Substituted 2‑(2′-Hydroxyphenyl)benzoxazole

, 2018
Excitation-dependent multiple fluorescence of a 2-(2′-hydroxyphenyl)­benzoxazole (HBO) derivative (1) is described. Compound 1 contains the structure of a charge-transfer (CT) 4-hydroxyphenylvinylenebipy fluorophore and an excited-state intramolecular ...
Lei Zhu (16642), Zhao Yuan, Kesavapillai Sreenath, Kesavapillai Sreenath (2041921), Joseph J. M. Hurley, Ali H. Younes, Quinton J. Meisner, Zhao Yuan (547890), Joseph J. M. Hurley (5978486), Quinton J. Meisner (4922458), Ali H. Younes (1589731), Lei Zhu   +11 more
core   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Graphene-based flexible SERS substrates with Ag nanohole structures for biochemical sensing

Next Nanotechnology
Flexible substrates for surface-enhanced Raman spectroscopy (SERS) are essential for practical applications, such as point-of-care testing, wearable sensing, and environmental analysis that require high sensitivity, portability, and mechanical ...
Takashi Uchino, Yanjun Heng, Ryoma Kumagai, Shigenobu Kasai, Chao Tang, Hirokazu Fukidome, Akira Satou, Taiichi Otsuji, Shuji Ikeda   +8 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Predicting vibrational failure of flexible ducting [PDF]

, 1971
Technique applies to liquid or gas transfer through flexible ducting and proves valuable in high velocity fluid flow cases. Fluid mechanism responsible for free bellows vibrational excitation also causes flexible hose oscillation.
Henry, R. H.
core