Electronically steerable ultrasound-driven long narrow air stream
@article{Hasegawa2017ElectronicallySU, title={Electronically steerable ultrasound-driven long narrow air stream}, author={Keisuke Hasegawa and Liwei Qiu and Akihito Noda and Seki Inoue and Hiroyuki Shinoda}, journal={Applied Physics Letters}, year={2017}, volume={111}, pages={064104} }
Acoustic streaming, which is the unidirectional movement of a medium driven by its internal intense acoustic vibrations, has been known for more than a century. Despite the long history of research, there have been no scientific reports on the creation of long stretching steerable airflows in an open space, generated by ultrasound. Here, we demonstrated the creation of a narrow, straight flow in air to a distance of 400 mm from an ultrasound phased array emitting a Bessel beam. We also…
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References
SHOWING 1-10 OF 39 REFERENCES
Controlling acoustic streaming in an ultrasonic heptagonal tweezers with application to cell manipulation.
- PhysicsUltrasonics
- 2014
Holographic acoustic elements for manipulation of levitated objects
- PhysicsNature communications
- 2015
The phases used to drive an ultrasonic phased array are optimized and it is shown that acoustic levitation can be employed to translate, rotate and manipulate particles using even a single-sided emitter.
Oscillating acoustic streaming jet
- Physics
- 2014
The present paper provides the first experimental investigation of an oscillating acoustic streaming jet. The observations are performed in the far field of a 2 MHz circular plane ultrasound…
PIV applied to eckart streaming produced by a medical ultrasound transducer.
- PhysicsUltrasonics
- 2001
Scaling and dimensional analysis of acoustic streaming jets
- Physics
- 2014
This paper focuses on acoustic streaming free jets. This is to say that progressive acoustic waves are used to generate a steady flow far from any wall. The derivation of the governing equations…
Acoustic Streaming due to Attenuated Plane Waves
- Physics
- 1953
Theories for calculating steady streaming associated with sound fields are reviewed, comparing the methods and approximations of various authors. Two illustrative problems are worked out, both for…
Acoustic radiation force and streaming induced by focused nonlinear ultrasound in a dissipative medium
- Physics
- 1996
Based on asymptotic methods recently developed in nonlinear acoustics, analytical solutions of the equations for the radiation force induced by nonlinear focused ultrasound in a dissipative medium…
Acoustic Bessel-like beam formation by an axisymmetric grating
- Physics
- 2014
We report Bessel-like beam formation of acoustic waves by means of an axisymmetric grating of rigid tori. The results show that the generated beam pattern is similar to that of Bessel beams,…
Generating Bessel beams by use of localized modes.
- PhysicsJournal of the Optical Society of America. A, Optics, image science, and vision
- 2005
A novel method for generating both propagating and evanescent Bessel beams is proposed using a pair of distributed Bragg reflectors with a resonant point source on one side of the system and transmission of a resonan point source through a thin film.
On the Circulations Caused by the Vibration of Air in a Tube
- Physics
- 1931
There seems a need for accurate measurements of the velocity of sound in gases, both at ordinary temperatures with chemically allied series of gases and vapours, and at high temperatures in…