Title:

Vibration Modes and Nonlinear Dynamics in Acoustic Levitation

Speaker:

Prof. Izhak Bucher

Affiliation:

Technion - Israel Institute of Technology

When:

Tuesday, February 18, 2025 at 11:00:00 AM   Add to Calendar

Where:

Love Building, Room 184

Host:

Michael Leamy
michael.leamy@me.gatech.edu

Abstract

This presentation provides an in-depth exploration of the significance of vibration modes and nonlinear dynamics in the context of acoustic levitation. It details the utilization of ultrasonic transducers to regulate vibration patterns, thereby creating a nonlinear acoustic field for manipulating objects and particles. The presentation highlights the practical application of ring and horn-shaped metal transducers to produce amplified traveling waves for moving objects without physical contact. Furthermore, it scrutinizes the employment of standing acoustic waves to confine particles and deliberates on their nonlinear dynamics, phase, and Autoresonance control of levitated particles through several experiments. Additionally, the presentation undertakes an examination of numerical and analytical models, juxtaposing them with experimental campaigns.

Biography

Izhak Bucher is a Mechanical Engineering professor at the Technion, Israel Institute of Technology. After completing his PhD in 1993, he spent 3 years as a researcher in the Dynamics section at Imperial College London, UK. In 1996, he joined the Technion and is currently the head of the Dynamics Laboratory. His research focuses on dynamics, rotating structures, signal processing, wave dynamics, vibrations, and ultrasonic acoustics for levitation and propulsion. Web: https://dynamics.net.technon.ac.il