Results 21 to 30 of about 2,036,069 (311)

Transferring Data from Smartwatch to Smartphone through Mechanical Wave Propagation

Sensors, 2015
Inspired by the mechanisms of bone conduction transmission, we present a novel sensor and actuation system that enables a smartwatch to securely communicate with a peripheral touch device, such as a smartphone.
Seung-Chan Kim, Soo-Chul Lim
doaj   +1 more source

Directional Transmission Characteristics of Acoustic Waves Based on Artificial Periodic Structures

IEEE Access, 2019
Acoustic artificial periodic structures, also known as phononic crystal, have been widely used in special acoustic problems such as low-frequency vibration reduction and noise reduction due to their bandgap characteristics.
Shuai Tang, Rui Wang, Jianning Han
doaj   +1 more source

Research on the Processing Method of Acoustic Focusing Cavities Based on the Temperature Gradient

Applied Sciences, 2021
Aiming at the key factors affecting the quality and efficiency of high-energy in-beam machining, this paper studies the broadband acoustic focusing effect based on a discrete temperature gradient.
Liqun Wu, Yafei Fan, Hongcheng Wang, Linan Zhang, Yizheng Sheng, Yajing Wang, Yaxing Wang   +6 more
doaj   +1 more source

Mid-frequency acoustic transmission and communication in the Arctic: the Nansen Basin under-ice experiments

Frontiers in Marine Science
The Arctic Ocean is undergoing rapid environmental changes, and measurement and monitoring of its physical ice-ocean variables is becoming increasingly important.
Dag Tollefsen, Paul A. van Walree, Petter Østenstad   +2 more
doaj   +1 more source

The Impact of Special Marine Environments Such as the Kuroshio on Hydroacoustic Detection Equipment

Journal of Marine Science and Engineering
In order to study the impact of acoustic propagation characteristics in the northeastern South China Sea, GEBCO08 global terrain grid data and Argo data were used to numerically simulate the acoustic transmission characteristics of two stations in the ...
Xueqin Zhang, Kunde Yang, Xiaolin Yu
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Study of high frequency acoustic directional transmission model based on graphene structure

AIP Advances, 2020
The directional transmission of high-frequency sound waves is of great significance to the development of underwater communication and cell photoacoustic detection.
Peng Yang, Jingzhi Wu, Rongrong Zhao, Jianning Han   +3 more
doaj   +1 more source

Physics-Aware Machine-Learning-Driven Inverse Design of Broadband Ultra-Open Acoustic Metamaterials. [PDF]

Adv Sci (Weinh)
A physics‐aware machine‐learning framework enables inverse design of ultra‐open acoustic silencers by decoupling spectral and radial design spaces. The approach rapidly identifies broadband, compact, and highly ventilated architectures, while revealing hidden linear design rules that link geometry, impedance matching, and acoustic performance.
Yang Z, Li M, Xie X, Chen A, Bifano TG, Zhang X.   +5 more
europepmc   +2 more sources

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

Advanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ, Jörg Hohe, Martin Kördel, Michael Giese, Niklas Toffert, Christian Seidel, Olaf Rehme, Patrik Schneider, Oliver Focke, Elie Abi Aoun, Claas Falldorf, Beñat Gutierrez, Alexandra Kühn, Sven Torstrick-von der Lieth, Christoph Herden, Erik Johannsen, Jan‐Uwe R. Schmidt, Felix Winkelmann, Andreas Schott, Daniel Schott   +19 more
wiley   +1 more source

Acoustic wave transmission channel based on phononic crystal line defect state

AIP Advances, 2019
To generate directional transmission characteristics of acoustic waves, we constructed two abnormal transmission models based on the protocell. The simulation results showed that the band gap characteristic of the phononic crystal structure can be used ...
Jianning Han, Shuai Tang, Rui Wang, Wen Wang   +3 more
doaj   +1 more source