Article
Mechanics
Yupei Qiao, Menyang Gong, Haibin Wang, Jun Lan, Teng Liu, Jiehui Liu, Yiwei Mao, Aijun He, Xiaozhou Liu
Summary: An expression for the acoustic radiation force on a free spherical particle in a viscous fluid subjected to an incident plane wave was derived, considering fluid viscosity, particle elasticity, and the particle's state when suspended in the liquid. Experiments were designed and conducted to compare measured ARFs with theoretical predictions using polystyrene spheres. The analysis showed that ARF increases with pressure amplitude or dynamic viscosity, with maxima or minima depending on dimensionless frequency kR, and good agreement between theoretical and experimental values. This work provides an advanced ARF theory for more accurate real-world predictions.
Article
Acoustics
Wolfgang Rueckner, Joseph Peidle, Allen Crockett, Daniel Davis
Summary: Schlieren images reveal that the particle size of solid elastic Styrofoam spheres affects their levitation positions in ultrasonic acoustic standing waves.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Engineering, Biomedical
Jin Chen, Xiwei Huang, Xuefeng Xu, Renjie Wang, Maoyu Wei, Wentao Han, Jiafei Cao, Weipeng Xuan, Yakun Ge, Junchao Wang, Lingling Sun, Ji-Kui Luo
Summary: The study presents an integrated platform that combines acoustophoresis-based separator and lensless imaging sensor to separate, distinguish, and count microbeads of different sizes label-free. Experimental results demonstrate the excellent performance of the platform, offering a promising solution for label-free cell separation and detection in biomedical diagnostics.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2022)
Article
Acoustics
Everton B. Lima, Glauber T. Silva
Summary: The study introduces a semi-analytical approach for handling subwavelength axisymmetric particles immersed in an isotropic Newtonian fluid, with the obtained mean acoustic fields depending on scattering coefficients reflecting monopole and dipole modes. The method is validated by comparison with exact results and applied to a more realistic scenario involving red blood cells in blood plasma under ultrasonic waves.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Physics, Applied
Ning Ding, Qingyu Ma, Yuzhi Li, Gepu Guo, Juan Tu, Dong Zhang
Summary: OA-AV beams can be constructed by introducing phase delays to traditional transducer arrays for contactless manipulations, showing a linear trajectory. The axial and cross-sectional profiles of the acoustic-vortex beams can be adjusted based on the order and radial offset.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Acoustics
Yuchen Zang, Qin Chang, Xiaozhen Wang, Chang Su, Pengfei Wu, Weijun Lin
Summary: Acoustic levitation is a significant container-free processing method that counteracts gravity using acoustic radiation force. This study provides a systematic analysis of sphere dynamics in a plane standing wave levitation system and calculates the axial and transverse natural oscillation frequencies, emphasizing the influence of gravity on these frequencies. Experimental results confirm the relationship between transverse natural oscillation frequency and sphere density.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2022)
Article
Physics, Fluids & Plasmas
S. Z. Hoque, K. Bhattacharyya, A. K. Sen
Summary: In this study, the translational and rotational motion of a particle in a standing bulk acoustic wave were numerically simulated, and the effects of particle size, shape, and initial position on the motion were investigated. The results revealed that the rotation direction and the location of maximum torque of the particle varied with its size and aspect ratio.
PHYSICAL REVIEW FLUIDS
(2022)
Article
Engineering, Electrical & Electronic
Jun Long Han, Hong Hu, Qing Yun Huang, Yu Lin Lei
Summary: In this study, an acoustofluidic platform based on standing surface acoustic waves (SSAWs) was established to analyze the influence of droplet contact angle on particle separation. Experimental results demonstrated the importance of reducing the contact angle for achieving better particle separation efficiency.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Analytical
Umar Farooq, Xiufang Liu, Wei Zhou, Muhammad Hassan, Lili Niu, Long Meng
Summary: This method utilizes the collision between nanowires and cells to induce cell lysis efficiently, with advantages of low power consumption, fast processing, reusability, and minimal sample consumption. Ni coated Ag-nanowires show promise for applications in point of care diagnostics.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Guojun Liu, Wanghao Shen, Yan Li, Hong Zhao, Xinbo Li, Conghui Wang, Fang He
Summary: This paper proposes a continuous separation method for multiple particles with the same volume but different densities based on a microfluidic chip. By using standing surface acoustic waves and hydrodynamic separation technology, continuous and effective separation of particles can be achieved. Experimental results show that this method can efficiently separate particles with different densities, with potential applications in biological research, disease diagnosis, and clinical practice.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Acoustics
Elena D. Vinogradova
Summary: The study rigorously solves the plane wave scattering problem for a rigid spherical shell with two coaxial circular holes using the Method of Analytical Regularization. The solution is uniformly valid with respect to aperture size and allows for accurate studies of scattering characteristics in a wide frequency range, including total and sonar cross-sections.
JOURNAL OF SOUND AND VIBRATION
(2021)
Article
Physics, Multidisciplinary
Qin Chang, Yuchen Zang, Weijun Lin, Chang Su, Pengfei Wu
Summary: Acoustic manipulation is an important area of research, and the calculation of acoustic radiation force on a particle near boundaries is a critical task. In this study, a finite element method numerical model is presented to analyze the acoustic radiation force on a rigid cylindrical particle immersed in fluid near a rigid corner. The effects of boundaries on the force are investigated, with emphasis on the non-dimensional frequency and the distance to each boundary. The results demonstrate the importance of these parameters in acoustic manipulation near complex boundaries.
Article
Physics, Applied
Ronghe Li, Yifei Li, Hande Sang, Yuanyuan Liu, Shuang Chen, Su Zhao
Summary: This study investigates the influence of ambient pressure on the load capacity of near-field acoustic levitation. Theoretical models based on acoustic radiation pressure and hydrodynamic lubrication theory are developed, considering the changes in ambient pressure. Both simulation and experimental results demonstrate that the levitation force is directly proportional to the ambient pressure. The levitation force increases by 4-5 times at an ambient pressure of 0.5 MPa, and a maximum load capacity of 0.309 MPa is achieved.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Mechanical
Fatemeh Malekabadi, Hakan Osman Caldag, Serhat Yesilyurt
Summary: In this study, the acoustic radiation forces and torques on ring-shaped slender microstructures in a standing wave were analyzed using a three-dimensional finite-element method model. The effects of geometric and physical parameters on the radiation forces and torques were characterized. The results showed that the radiation force tends to push the rings towards the pressure nodes or anti-nodes, and the magnitude of the radiation force is volumetrically dependent on the geometric parameters. Additionally, a nonzero net torque develops when the ring is not co-planar with plane waves, and the magnitude and direction of the torque vary depending on the position, orientation, and material properties of the ring.
JOURNAL OF FLUIDS AND STRUCTURES
(2023)
Article
Acoustics
Jinping Wang, Feiyan Cai, Qin Lin, Degang Zhao, Hairong Zheng
Summary: In this study, the acoustic radiation force acting on spherical elastic shells in standing waves was theoretically investigated. It was found that the direction of the acoustic radiation force can be controlled by changing the physical properties of the shells, and the force can be significantly enhanced around resonant frequencies in the relatively low-frequency range.
Article
Physics, Applied
Shen Liang, Wang Chaohui
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Biophysics
Nanjing Hao, Zeyu Wang, Pengzhan Liu, Ryan Becker, Shujie Yang, Kaichun Yang, Zhichao Pei, Peiran Zhang, Jianping Xia, Liang Shen, Lin Wang, Kathleen A. Welsh-Bohmer, Laurie Sanders, Luke P. Lee, Tony Jun Huang
Summary: Alzheimer's disease is a severe neurodegenerative disorder with early diagnosis being a challenge. Researchers have developed an integrated diagnostic system combining acoustics, microfluidics, and biosensors for accurate and rapid detection of AD biomarkers, showing promising results for early diagnosis.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Biophysics
Liang Shen, Zhenhua Tian, Jinxin Zhang, Haodong Zhu, Kaichun Yang, Teng Li, Joseph Rich, Neil Upreti, Nanjing Hao, Zhichao Pei, Geonsoo Jin, Shujie Yang, Yaosi Liang, Wang Chaohui, Tony Jun Huang
Summary: This study presents acousto-dielectric tweezers that utilize surface acoustic waves and alternating current electric fields to apply controllable acoustophoretic and dielectrophoretic forces on cells, enabling the trapping and differentiation of cells based on their intrinsic biophysical properties. Experimental results demonstrate the potential applications of the mechanism in single-cell analysis, size-insensitive cell separation, and cell phenotyping.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Nanjing Hao, Zhichao Pei, Pengzhan Liu, Hunter Bachman, Ty Downing Naquin, Peiran Zhang, Jinxin Zhang, Liang Shen, Shujie Yang, Kaichun Yang, Shuaiguo Zhao, Tony Jun Huang
Article
Biochemical Research Methods
Haiwei Lu, Kirk Mutafopulos, John A. Heyman, Pascal Spink, Liang Shen, Chaohui Wang, Thomas Franke, David A. Weitz
Article
Physics, Fluids & Plasmas
Shen Liang, Wang Chaohui, Hu Qiao
Article
Physics, Fluids & Plasmas
Shen Liang, Wang Chaohui
