Results 91 to 100 of about 75,030 (206)

Acoustofluidic Tweezers Integrated with Droplet Sensing Enable Multifunctional Closed‐Loop Droplet Manipulation

open access: yesAdvanced Science
Droplet manipulation technologies with surface acoustic waves attract significant attention for applications in fluid handling and bioanalysis. However, existing technologies face challenges in automation, precision, and functional integration, limiting ...
Mingyang Sui   +5 more
doaj   +1 more source

Tapered transmission line technique based graded matching layers for thickness mode piezoelectric transducers [PDF]

open access: yes, 2009
Conventionally, in order to acoustically match thickness mode piezoelectric transducers to a low acoustic impedance load medium, multiple quarter wavelength (QW) matching layers are employed at the front face of the device.
Ramadas, Sivaram Nishal   +6 more
core   +1 more source

Characteristic measurement of a surface acoustic wave nano-stepping motor by using a fiber-optic Michelson interferometer

open access: yesAdvances in Mechanical Engineering, 2019
The actuation technique of a surface acoustic wave motor with nanometer scale linear motion was experimentally investigated in this study. The surface acoustic wave motor comprised a stator made of a Y+128° cut, X-propagation lithium niobate substrate ...
Tai-Ho Yu
doaj   +1 more source

Acoustic tweezers based on circular, slanted-finger interdigital transducers for dynamic manipulation of micro-objects. [PDF]

open access: yesLab Chip, 2020
Kang P   +10 more
europepmc   +1 more source

Transversal bleustein-gulayev (B.G.) surface waves on a piezoelectric ceramic

open access: yesArchives of Acoustics, 2016
In this paper the results of investigations of piezoelectric ceramic of the type lead zirconate-titanate (PZT) used as a basis for acoustic-electric waves (B.G.) are presented.
Wincenty PAJEWSKI
doaj  

Research of flexible plum-shaped guided wave transducer circular array for damage detection of plate metal

open access: yesAIP Advances
Ultrasonic guided wave transducers have become a key technology in the field of structural health monitoring due to their broad detection range and high sensitivity.
Jiazhen Zhang   +5 more
doaj   +1 more source

Flexural Plate Wave Piezoelectric MEMS Pressure Sensor

open access: yesProceedings
A piezoelectric MEMS pressure sensor that exploits the first antisymmetric vibration mode (A0) of Lamb waves is presented. The 6 mm × 6 mm diaphragm used to sense the applied pressure is composed of a stack of doped silicon (Si) and aluminum nitride (AlN)
Alessandro Nastro   +5 more
doaj   +1 more source

An approximation to the planar harmonic impedance for interface waves in piezoelectric body

open access: yesArchives of Acoustics, 2009
TIt is well known that spatial-temporal Green function characterizes sufficiently the elastic media. For the case of elastic interface waves which propagate at the interface between two, perfectly mechanically contacting piezoelectric ...
Eugeniusz J. DANICKI
doaj  

INTERDIGITAL TRANSDUCERS FOR LAMB-WAVE BASED SHM SYSTEMS: DESIGN AND SENSITIVITY ANALYSIS

open access: yes, 2011
Structural health monitoring (SHM) systems have been constantly improved in the past decades. Sensors for SHM should be built-in to perform continuous measurements in opposite to non-destructive testing (NDT), in case of which sensors have to be mounted ...
Rosiek, Mateusz   +3 more
core  

Analysis of narrow-band dispersive interdigital transducers by the scattering-matrix method for periodic metal strips

open access: yesArchives of Acoustics, 2015
A model of the interdigital transducer of surface acoustic wave (SAW) is introduced on the strength of the scattering matrix for a single metal strip of the periodic system deposited on a piezoelectric substrate surface. The model describes properties of
Eugeniusz DANICKI
doaj  

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