Results 91 to 100 of about 191,841 (293)

Direct Mode‐Resolved Measurement of Interfacial Phonon Transport by Acoustic Phonon Reflectometry

Advanced Materials Interfaces, EarlyView.
We introduce a novel analysis, acoustic phonon reflectometry, that measures the mode‐resolved phonon reflection coefficient at semiconductor interfaces. In aluminum nitride, we observe excellent agreement with the acoustic mismatch model across three distinct interfaces.
Christopher Hennighausen, Gustavo A. Alvarez, Jeffrey Z. Kaaret, Patrick Soucy, Amir F. Amhaz, Jeffrey Moses, Kenneth R. Beyerlein, Nicole A. Benedek, Zhiting Tian, Ankit S. Disa   +9 more
wiley   +1 more source

Excitation of surface waves on one-dimensional solid–fluid phononic crystals and the beam displacement effect

AIP Advances, 2014
The possibility of surface wave generation by diffraction of pressure waves on deeply corrugated one-dimensional phononic crystal gratings is studied both theoretically and experimentally.
Rayisa P. Moiseyenko, Jingfei Liu, Sarah Benchabane, Nico F. Declercq, Vincent Laude   +4 more
doaj   +1 more source

Hybrid Magnetoactive Soft Elastomers: Material Development Toward Application in Diaphragm Pumps

Advanced Materials Technologies, EarlyView.
Hybrid magnetoactive soft elastomeric membranes are developed by combining two different types of magnetic particles. The membranes exhibit distinct mechanical, magnetic and thermal properties owing to the unique characteristics of the two magnetic particles.
Somashree Mondal, Paweł Orkisz, Bogdan Sapiński, Ralph Spolenak, Frank Clemens   +4 more
wiley   +1 more source

Multidimensional Particle Separation by Tilted-Angle Standing Surface Acoustic Waves—Physics, Control, and Design

Powders
Lab-on-a-Chip devices based on tilted-angle standing surface acoustic waves (tasSAWs) emerged as a promising technology for multidimensional particle separation, highly selective in particle size and acoustic contrast factor.
Sebastian Sachs, Jörg König, Christian Cierpka   +2 more
doaj   +1 more source

Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces

Scientific Reports, 2017
Recent years have heralded the introduction of metasurfaces that advantageously combine the vision of sub-wavelength wave manipulation, with the design, fabrication and size advantages associated with surface excitation.
Andrea Colombi, Victoria Ageeva, Richard J. Smith, Adam Clare, Rikesh Patel, Matt Clark, Daniel Colquitt, Philippe Roux, Sebastien Guenneau, Richard V. Craster   +9 more
doaj   +1 more source

Enhanced quantized current driven by surface acoustic waves

, 2000
We present the experimental realization of different approaches to increase the amount of quantized current which is driven by surface acoustic waves through split gate structures in a two dimensional electron gas.
Ahlers, F. J., Bastian, G., Blöcker, M., Ebbecke, J., Pierz, K.   +4 more
core   +1 more source

Ductility Tuning via Cluster Network Characteristics of Porous Components

Advanced Materials Technologies, EarlyView.
Network optimization via cluster characteristics induced by interaction of stress concentration is proposed, demonstrating increased cluster size and dispersion in non‐uniform porous components. The optimized structures exhibit, for the first time, that enhanced ductility and damage progression is controllable through zigzag cluster network designed by
Ryota Toyoba, Yuichi Otsuka, Ian J Davies, Naritoshi Aoyagi, Yukio Miyashita   +4 more
wiley   +1 more source

Air-ground interface: Surface waves, surface impedance and acoustic-to-seismic coupling coefficient [PDF]

In atmospheric acoustics, the subject of surface waves has been an area of discussion for many years. The existence of an acoustic surface wave is now well established theoretically.
Daigle, Gilles, Embleton, Tony
core   +1 more source

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

High contrast optical modulation by surface acoustic waves

, 2003
Numerical Calculations are employed to study the modulation of light by surface acoustic waves (SAWs) in photonic band gap (PBG) structures. The on/off contrast ratio in PBG switch based on optical cavity is determined as a function of the SAW induced ...
Krishnamurthy, S., Santos, P. V.
core   +1 more source