Eigenmode Steering in Spatiotemporal Gain–Loss Acoustic Metamaterials

Key Points

• To explore eigenmode steering using a gain-loss framework in acoustic metamaterials.
• Developed a spatiotemporal gain-loss model for acoustic resonators.
• Examined the coupling effects between resonators through a gain-loss coefficient.
• Analyzed eigenmode behavior in the presence of gain and loss.
• Established a relationship between the gain of one resonator and its partner's intensity.
• Demonstrated enhanced eigenmode control in coupled systems.
• Highlighted potential applications in advanced acoustic devices.