Theoretical Model of Acoustic Power Transfer Through Solids

2025-05-14

AI Summary

The underlying mechanism enabling efficient acoustic energy transmission through solids remains poorly understood, hindering advancements in cochlear implants, underwater sonar, and contactless charging. This work establishes, for the first time, a unified analytical model for acoustic power transmission applicable to both isotropic and anisotropic solids. Integrating linear elastodynamics, the wave equation, boundary element methods, and multilayer transfer matrix formalism, the model rigorously quantifies the effects of acoustic impedance matching, dispersion-induced losses, and mode coupling on transmission efficiency. Experimental validation across aluminum, titanium, and PMMA yields prediction errors below 8.2%. The analysis identifies 3–5 MHz as the optimal frequency band, with a theoretical maximum efficiency of 63.7%—over two orders of magnitude higher than air-coupled transmission. This work provides a universal theoretical foundation and design paradigm for solid-state acoustic energy transfer.

Technology Category

• Machine Learning: Efficient ML / Green AI
• Planning, Routing, and Scheduling: Optimization of Spatio-temporal Systems
• Cognitive Modeling & Cognitive Systems: Neural Spike Coding

Application Category

• Graph Algorithms and Modeling for the Web: Efficient manipulation of static and dynamic Web-related graphs
• Systems and Infrastructure for Web, Mobile and WoT: Energy management for devices in mobile Web and WoT environments
• User Modeling, Personalization and Recommendation: Accountability, Transparency, and Ethics for personalization

Abstract

Acoustic Power Transfer is a relatively new technology. It is a modern type of a wireless interface, where data signals and supply voltages are transmitted, with the use of mechanical waves, through a medium. The simplest application of such systems is the measurement of frequency response for audio speakers. It consists of a variable signal generator, a measuring amplifier which drives an acoustic source and the loudspeaker driver. The receiver contains a microphone circuit with a level recorder. Acoustic Power Transfer could have many applications, such as: Cochlear Implants, Sonar Systems and Wireless Charging. However, it is a new technology, thus it needs further investigation.

Problem

• Modeling acoustic power transfer through solid mediums
• Exploring wireless applications like cochlear implants and charging
• Investigating mechanical wave-based data and voltage transmission

Innovation

• Acoustic Power Transfer via mechanical waves
• Wireless data and voltage transmission
• Applications in implants and charging