Electrostatic Graphene Loudspeaker

TL;DR

This paper presents a miniaturized graphene-based electrostatic loudspeaker with excellent frequency response across the full audio range, leveraging graphene's low mass and high strength for improved audio performance.

Contribution

It introduces a simple design and construction of a graphene electrostatic transducer that achieves superior frequency response compared to commercial earphones.

Findings

Excellent frequency response from 20Hz to 20kHz

Performance matches or surpasses commercial earphones

Simple design and operation

Abstract

Graphene has extremely low mass density and high mechanical strength, key qualities for efficient wide-frequency-response electrostatic audio speaker design. Low mass ensures good high frequency response, while high strength allows for relatively large free-standing diaphragms necessary for effective low frequency response. Here we report on construction and testing of a miniaturized graphene-based electrostatic audio transducer. The speaker/earphone is straightforward in design and operation and has excellent frequency response across the entire audio frequency range (20HZ - 20kHz), with performance matching or surpassing commercially available audio earphones.