Highly Stretchable Sound-in-Display Electronics Based on Strain-Insensitive Metallic Nanonetworks

Area of Science:

• Materials Science
• Electrical Engineering
• Acoustics

Background:

• The increasing prevalence of human-machine interfaces and the Internet of Things (IoT) necessitates novel display technologies.
• Integrating sound generation with visual displays offers a new pathway for human-to-machine interaction via auditory system visualization.

Purpose of the Study:

• To demonstrate a stretchable sound-in-display device capable of synchronized sound and color generation.
• To explore the potential of field-induced inorganic electroluminescent (EL) phosphors and strain-insensitive silver nanowire (AgNW) electrodes for robust device performance.

Main Methods:

• Fabrication of a stretchable device utilizing AgNW electrodes and EL phosphors embedded within a dielectric elastomer actuator (DEA).
• Application of alternating-current bias to induce electroluminescence and simultaneous sound wave generation through DEA actuation synchronized with input sound signals.

Main Results:

• Successful demonstration of synchronized sound and color generation in a single stretchable device.
• The device exhibited robust and reliable electroluminescence and sound generation, unaffected by stretch-release cycles due to the AgNW electrodes.

Conclusions:

• The presented principle integrates light emission and acoustic systems into one stretchable device.
• This technology holds promise for advanced sound-in-display electronics in IoT and human-machine interface applications.