Results 81 to 90 of about 84,329 (313)

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

Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment

Advanced Materials, EarlyView.
ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud, Ryan W. Spangler, Johnathan D. Georgaras, Jonah B. Haber, Daniel Hirt, Maximilian Obst, Gonzalo Álvarez‐Pérez, Mackey Long III, Felix G. Kaps, Jakob Wetzel, Courtney Ragle, John E. Buchner, Youngji Kim, Aditha S. Senarath, Richarda Niemann, Mingze He, Giulia Carini, Unai Arregui‐Leon, Akash C. Behera, Ramachandra Bangari, Nihar Sahoo, Niels C. Brumby, J. Michael Klopf, Martin Wolf, Lukas M. Eng, Susanne C. Kehr, Thomas G. Folland, Alexander Paarmann, Patrick E. Hopkins, Felipe Jornada, Jon‐Paul Maria, Joshua D. Caldwell   +31 more
wiley   +1 more source

From Acoustic Waves to Microwaves

Acta Physica Polonica A, 2015
We present here some results of our research related to the optoelectronics and photonics and show all the experimental setups used. Starting with a discussion on the importance of the waves, we demonstrate our achievements based on employment of acoustic, optical, and microwaves and their technological use.
Pacheco, Gefeson Mendes, Sakamoto, João Marcos Salvi, Kitano, Claudio   +2 more
openaire   +4 more sources

Super‐Resolution Ultrasound Based Cell Tracking With Polymeric Nanobubbles

Advanced Materials, EarlyView.
This study presents a super‐resolution ultrasound platform for tracking cells in vivo. Biocompatible polymeric nanobubbles are used as highly echogenic intracellular labels. Following the injection of cells and microbubbles, ultrasound localization microscopy (ULM) can dynamically match the microvascular architecture and individual cell trajectories ...
Junlin Chen, Xiaoyu Wang, Jilin Fan, Bi Wang, Hanghang Fang, Yurui Wang, Hao Cui, Mohammad Roufarshbaf, Ekaterina Savina, Alexandra Valeske, Quim Peña, Yang Shi, Andreas Herrmann, Twan Lammers, Mathias Hornef, Roman Barmin, Thomas Lisson, Georg Schmitz, Anne Rix, Fabian Kiessling   +19 more
wiley   +1 more source

Plasmonic lattice excitation of surface acoustic waves in silicon photonic circuits

APL Photonics
Surface acoustic waves enable long group delays and narrowband analog filtering on-chip, which are difficult to obtain with fast-moving electromagnetic waves.
Leroy Dokhanian, Saawan Kumar Bag, Mirit Hen, Inbar Shafir, Matan Slook, Shai Ben-Ami, Avi Zadok   +6 more
doaj   +1 more source

Nonlinear electrostatic waves in an electron–positron plasma

AIP Advances, 2020
This paper presents a theoretical and numerical study of all possible nonlinear electrostatic waves in an unmagnetized and collisionless electron–positron plasma.
S. J. Yang, Y. Chen, C. Z. Xiao
doaj   +1 more source

Nonlocal Metaspire: A Scalable Elastic Material Platform With Decoupled Mechanical Modes

Advanced Materials, EarlyView.
Nonlocal Metaspire introduces sequential rotation to realize wider scalability in implementing complex nonlocal couplings in elastic metamaterials while suppressing unintended mode coupling. Numerical results clarify the underlying wave motions, demonstrate mode‐decoupled roton and maxon formation, and support a straightforward extension to higher ...
Seung Han Kim, Myung Hwan Bae, Ye Jeong Shin, Joo Hwan Oh   +3 more
wiley   +1 more source

Closed-Loop Acoustic Stimulation During Sleep in Children With Epilepsy: A Hypothesis-Driven Novel Approach to Interact With Spike-Wave Activity and Pilot Data Assessing Feasibility

Frontiers in Human Neuroscience, 2019
Slow waves, the electroencephalographic (EEG) hallmark of deep sleep, can be systematically manipulated by acoustic stimulation: stimulation time-locked to the down phase of slow waves reduces, whereas stimulation time-locked to the up phase increases ...
Sara Fattinger, Sara Fattinger, Bigna Bölsterli Heinzle, Bigna Bölsterli Heinzle, Georgia Ramantani, Georgia Ramantani, Lucia Abela, Lucia Abela, Bernhard Schmitt, Bernhard Schmitt, Reto Huber, Reto Huber, Reto Huber   +12 more
doaj   +1 more source

Detection of shaft-seal rubbing in large-scale power generation turbines with acoustic emissions. Case study. [PDF]

, 2004
Rubbing between the central rotor and the surrounding stationary components of machinery such as large-scale turbine units can escalate into severe vibration, resulting in costly damage.
Mba, David, Cooke, Alastair K., Hewitt, G, Roby, D   +3 more
core  

Smart and Sustainable Sizing: Investigating the Sensing Behavior of Glass Fabrics Coated With Waterborne Polyurethane/Graphene Dispersions

Advanced Materials Technologies, EarlyView.
Waterborne polyurethane/graphene formulations are developed as piezoresistive coatings on glass fabric to enable flexible strain sensing. The graphene‐enabled conductive network provides a stable electromechanical response under cyclic compression. The coating demonstrates reliable pressure‐dependent resistance changes, highlighting its potential for ...
Vishnu Vijayan Pillai, Premika Govindaraj, Sai Aditya Pradeep, Olivia Sequerth, Srikanth Pilla, Franz Konstantin Fuss, Peter Kingshott, Nishar Hameed, Nisa V Salim   +8 more
wiley   +1 more source