Results 81 to 90 of about 1,782,949 (343)

Multi-frequency sound production and mixing in graphene

open access: yesScientific Reports, 2017
The ability to generate, amplify, mix and modulate sound in one simple electronic device would open up a new world in acoustics. Here we show how to build such a device. It generates sound thermoacoustically by Joule heating in graphene.
M. S. Heath, D. W. Horsell
doaj   +1 more source

The use of acoustics in space exploration

open access: yes, 2007
In recent years increased attention has been paid to the potential uses of acoustics forextraterrestrial exploration. The extent to which acoustics per se is used in these studiesvaries greatly. First, there are the cases in which acoustics is simply the
Leighton, T.G.
core  

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

Determination of Radiation Pressure in Acoustic Levitation by Optical Acoustic-Field Measurement

open access: yesIEEE Access, 2019
Pulsed digital holography was used to determine the acoustic radiation force on objects suspended in a single-axis acoustic levitator. Digital holography provided both the object images and the optical phase data required to determine the instantaneous ...
James J. Scire
doaj   +1 more source

Bubble acoustics: from whales to other worlds

open access: yes, 2014
Gas bubbles in liquids have an extraordinary ability to interact with sound fields. They are potent generators, absorbers, and scatterers of sound, and can have a profound effect upon the sound speed (changing it on subsecond timescales by a factor of 2 ...
Leighton, Timothy
core  

A Soft Robotic Device for Targeted Massage Therapy of Residual Limbs

open access: yesAdvanced Robotics Research, EarlyView.
Residual limb edema after amputation can hinder recovery and delay prosthetic fitting. This study presents a soft‐robotic wearable device that delivers sequential compression through pneumatic McKibben actuators. By replicating the principles of manual lymphatic drainage, the device generates controlled mechanotherapeutic pressure patterns, providing a
Maria Grazia Polizzotto   +5 more
wiley   +1 more source

The parametric propagation in underwater acoustics : experimental results [PDF]

open access: yes, 2012
In underwater acoustics, detection of buried objects in sediments (cables, mines, . . . ) is a complex problem. Indeed, in order to ensure sufficient penetration depth in marine sediments, low frequencies have to be used, implying a low resolution.
BOUTTARD, Etienne   +6 more
core  

LLM‐Integrated Human–Robot Interaction System for Microrobots

open access: yesAdvanced Robotics Research, EarlyView.
This paper proposes an LLM‐based control framework for guiding microrobots using human natural language. This framework can convert the natural human speech into safe and executable command sets for reliable navigation in complex environments. The experimental results show high accuracy and robustness in task performance, demonstrating the potential of
Bairong Zhu, Amar Salehi, Tingting Yu
wiley   +1 more source

Two-Dimensional Numerical Simulations of Ultrasound in Liquids with Gas Bubble Agglomerates: Examples of Bubbly-Liquid-Type Acoustic Metamaterials (BLAMMs)

open access: yesSensors, 2017
This work deals with a theoretical analysis about the possibility of using linear and nonlinear acoustic properties to modify ultrasound by adding gas bubbles of determined sizes in a liquid.
Christian Vanhille
doaj   +1 more source

Nonlinear Acoustics in a General Waveguide

open access: yes, 2019
Until this present work, the acoustics of waveguides has been divided into two broadly distinct fields---linear acoustics in ducts of complex geometry such as those with curvature or varying width, and nonlinear acoustics restricted to simple geometry ...

core   +1 more source

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