The paper presents a study on the fabrication of a lightweight acoustic hyperbolic paraboloid (HyPar) diaphragm using self-assembly nanoarchitectonics. The diaphragm is composed of a polyacrylonitrile (PAN) network combined with graphene oxide (GO) nanolayers. Spray coating is employed as a fabrication method, providing a simple and cost-effective approach to create large-scale curved diaphragms. The results demonstrate that the PAN/GO diaphragm exhibits acoustic performance comparable to a commercially available banana pulp diaphragm while significantly reducing weight and thickness. Notably, the graphene-based diaphragm is 15 times thinner and 8 times lighter than the commercial banana pulp diaphragm. This thinner and lighter nature of the graphene-based diaphragm offers advantages in applications where weight and size constraints are critical, such as in portable audio devices or acoustic sensors.
Keywords: Graphene oxide; acoustic diaphragm; hyperbolic paraboloid shape; nanoarchitectonics; polyacrylonitrile fibres.
This paper introduces a novel fabrication of a lightweight graphene-based acoustic HyPar diaphragm using self-assembly nanoarchitectonics, achieving significantly reduced thickness and weight while maintaining high acoustic performance.
© 2024 The Author(s). Published by National Institute for Materials Science in partnership with Taylor & Francis Group.