Effects of the Number of Graphene Layers and Graphene Diaphragm Size on High Frequency Electrostatic Speakers

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2024-05-30 DOI:10.1007/s13391-024-00501-3

Dong-Kwan Lee, Jongchan Yoo, Byung-Ho Kang, Sung-Hoon Park

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Abstract

Graphene, a promising carbon nanomaterial, has garnered significant attention owing to its chemical stability, exceptional mechanical properties, and remarkable electrical conductivity and is being used in various electrical engineering applications ranging from solar cells to touch screens. The inherent mechanical strength and electric charge capacity of graphene enable efficient designs of diaphragms used in electrostatic loudspeakers, specifically within the high-frequency domain. This study incorporated single-layer and multi-layer graphene sheets, synthesized via chemical vapor deposition, as electrically charged diaphragms in electrostatic loudspeakers paired with an indium tin oxide film electrode to produce Coulomb force. Subsequently, the sound pressure levels of these distinct graphene- based electrostatic loudspeakers were determined through frequency response measurements. Based on our findings, we propose an optimal graphene film configuration for future electrostatic loudspeaker applications.

Graphical Abstract

Abstract Image

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石墨烯层数和石墨烯振膜尺寸对高频静电扬声器的影响

石墨烯是一种前景广阔的碳纳米材料，因其化学稳定性、优异的机械性能和卓越的导电性能而备受关注，并被广泛应用于从太阳能电池到触摸屏等各种电气工程领域。石墨烯固有的机械强度和电荷容量使静电扬声器中使用的振膜（尤其是高频领域）的设计变得高效。本研究将通过化学气相沉积合成的单层和多层石墨烯薄片作为静电扬声器中的带电振膜，与氧化铟锡薄膜电极配对以产生库仑力。随后，通过频率响应测量确定了这些不同石墨烯静电扬声器的声压级。根据我们的研究结果，我们为未来的静电扬声器应用提出了一种最佳的石墨烯薄膜配置。图文摘要

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.