Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Silva, Glauber T."'
Autor:
Marques, Alisson S., Silva, Glauber T.
This paper presents a theoretical investigation of vortex modes in acoustofluidic cylindrical resonators with rigid boundaries and viscous fluids. By solving the Helmholtz equation for linear pressure, incorporating boundary conditions that account f
Externí odkaz:
http://arxiv.org/abs/2410.10531
Autor:
Lima, Everton B., Silva, Glauber T.
The acoustic radiation force produced by ultrasonic waves is the "workhorse" of particle manipulation in acoustofluidics. Nonspherical particles are also subjected to a mean torque known as the acoustic radiation torque. Together they constitute the
Externí odkaz:
http://arxiv.org/abs/2104.06090
Autor:
Santos, Harrisson D. A., Silva, Amanda E., Silva, Giclênio C., Lima, Everton B., Marques, Alisson S., Alexandre-Moreira, Magna S., Queiroz, Aline C., Jacinto, Carlos, Lopes, J. Henrique, Rocha, Ueslen, Silva, Glauber T.
Confocal Raman microscopy offers a particular pathway for monitoring chemical "fingerprints" of intracellular components like the cell membrane, organelles, and nucleus. Nevertheless, conventional Raman acquisitions of fixed or randomly dispersed cel
Externí odkaz:
http://arxiv.org/abs/2011.07520
We theoretically investigate how the acoustic radiation force and torque arise on a small spheroidal particle immersed in a nonviscous fluid inside an ideal cylindrical chamber. The ideal chamber comprises a hard top and bottom (rigid boundary condit
Externí odkaz:
http://arxiv.org/abs/2009.08808
Autor:
Lima, Everton B., Leao-Neto, JosE P., Marques, Alisson S., Silva, Giclenio C., Lopes, Jose H., Silva, Glauber T.
Publikováno v:
Phys. Rev. Applied 13, 064048 (2020)
The nonlinear interaction of a time-harmonic acoustic wave with an anisotropic particle gives rise to the radiation force and torque effects. These phenomena are at the heart of the acoustofluidics technology, where microparticles such as cells and m
Externí odkaz:
http://arxiv.org/abs/2004.12980
We demonstrate that the acoustic spin of a first-order Bessel beam can be transferred to a subwavelength (prolate) spheroidal particle at the beam axis in a viscous fluid. The induced radiation torque is proportional to the acoustic spin, which scale
Externí odkaz:
http://arxiv.org/abs/2003.12784
Ultrasonic superresolution images can be generated by means of (super) focusing acoustic beams to subwavelength dimensions or using algorithm-based methods. Here, we demonstrate that ultrasonic pulses which are superfocused by a ball-shaped lens can
Externí odkaz:
http://arxiv.org/abs/2001.04315
The nonlinear interaction of ultrasonic waves with a nonspherical particle may give rise to the acoustic radiation torque on the particle. This phenomenon is investigated here considering a rigid prolate spheroidal particle of subwavelength dimension
Externí odkaz:
http://arxiv.org/abs/1912.12933
The analysis of the secondary Bjerknes force between two bubbles suggests that this force is analogous to the electrostatic forces. The same analogy is suggested by the existence of a scattering cross section of an acoustic wave on a bubble. Our pape
Externí odkaz:
http://arxiv.org/abs/1711.03567
Autor:
Leao-Neto, J. P., Silva, Glauber T.
We provide a detailed analysis on the acoustic radiation force and torque exerted on a homogeneous viscoelastic particle in the long-wave limit (the particle radius is much smaller than the incident wavelength) by an arbitrary wave. We assume that th
Externí odkaz:
http://arxiv.org/abs/1508.01908