Cantilevers are one of the most utilized mechanical elements for acoustic sensing. In comparison to the edge clamped diaphragms of different shapes, a single edge clamped cantilever makes an acoustic sensor mechanically sensitive for detection of lower pressure. The aspect ratio of cantilevers is one of the most important parameters which affect sensitivity. Herein, we present a mathematical, finite element method and experimental analysis to determine the effect of the aspect ratio on the resonant frequency, response time, mechanical sensitivity, and capacitive sensitivity of a cantilever-based acoustic pressure sensor. Three cantilevers of different aspect ratios (0.67, 1, and 1.5) have been chosen for sound pressure application to detect capacitance change. The cantilever with the smallest aspect ratio (0.67) has the highest response time (206 ms), mechanical sensitivity, and capacitive sensitivity (22 fF), which reduce after increasing the aspect ratio. The resonant frequency of the cantilever was also analyzed by applying sweep in sound frequency. It was found to be minimum for the cantilever with the smallest aspect ratio (510 Hz) and increases with an increase in the aspect ratio. We have applied the garage fabrication process using low cost, recyclable, and easily available materials such as metal coated polymer sheets, mounting tapes and glass slides as alternative materials for expensive materials.

中文翻译：

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金属涂层聚合物和纸基悬臂梁的设计和分析，用于声压传感

悬臂是用于声学传感的最广泛使用的机械元件之一。与不同形状的边缘夹持膜片相比，单个边缘夹持悬臂使声传感器对检测低压具有机械敏感性。悬臂的长宽比是影响灵敏度的最重要参数之一。本文中，我们提出了一种数学有限元方法和实验分析，以确定纵横比对基于悬臂的声压传感器的共振频率，响应时间，机械灵敏度和电容灵敏度的影响。已选择三个不同纵横比（0.67、1和1.5）的悬臂用于声压应用，以检测电容变化。纵横比最小的悬臂（0。67）具有最高的响应时间（206 ms），机械灵敏度和电容灵敏度（22 fF），在增加长宽比后会降低。还通过应用声频扫描来分析悬臂的共振频率。对于具有最小长宽比（510 Hz）的悬臂来说，它最小，并且随着长宽比的增加而增加。我们在车库制造过程中使用了低成本，可回收且易于获得的材料，例如涂有金属的聚合物板，安装带和玻璃滑轨，作为昂贵材料的替代材料。对于具有最小长宽比（510 Hz）的悬臂来说，它最小，并且随着长宽比的增加而增加。我们在车库制造过程中使用了低成本，可回收且易于获得的材料，例如涂有金属的聚合物板，安装带和玻璃滑轨，作为昂贵材料的替代材料。对于具有最小长宽比（510 Hz）的悬臂来说，它最小，并且随着长宽比的增加而增加。我们在车库制造过程中使用了低成本，可回收且易于获得的材料，例如涂有金属的聚合物板，安装带和玻璃滑轨，作为昂贵材料的替代材料。