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首页> 外文期刊>Bioinspiration & biomimetics >Morphology and deflection properties of bat wing sensory hairs: scanning electron microscopy, laser scanning vibrometry, and mechanics model
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Morphology and deflection properties of bat wing sensory hairs: scanning electron microscopy, laser scanning vibrometry, and mechanics model

机译：蝙蝠翼感觉毛的形态和偏转特性：扫描电子显微镜，激光扫描振动法和力学模型

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摘要

Bat wings are highly adaptive airfoils that enable demanding flight maneuvers, which are performed with astonishing robustness under turbulent conditions, and stability at slow flight velocities. The bat wing is sparsely covered with microscopically small, sensory hairs that are associated with tactile receptors. In a previous study we demonstrated that bat wing hairs are involved in sensing airflow for improved flight maneuverability. Here, we report physical measurements of these hairs and their distribution on the wing surface of the big brown bat, Eptesicus fuscus, based on scanning electron microscopy analyses. The wing hairs are strongly tapered, and are found on both the dorsal and ventral wing surfaces. Laser scanning vibrometry tests of 43 hairs from twelve locations across the wing of the big brown bat revealed that their natural frequencies inversely correlate with length and range from 3.7 to 84.5 kHz. Young's modulus of the average wing hair was calculated at 4.4 GPa, which is comparable with rat whiskers or arthropod airflow-sensing hairs.
机译：蝙蝠的机翼是高度适应性的机翼，可以进行苛刻的飞行机动，在动荡的条件下具有惊人的鲁棒性，而在缓慢的飞行速度下则具有稳定性。蝙蝠的机翼稀疏地覆盖着与触觉感受器相关的微小的感官毛发。在先前的研究中，我们证明了蝙蝠翼毛与感测气流有关，从而改善了飞行机动性。在这里，我们根据扫描电子显微镜分析报告了这些毛发的物理测量结果以及它们在大棕蝙蝠翼形f的翼表面上的分布。机翼的毛发呈强锥形，并在背侧和腹侧机翼表面均可见。激光扫描振动测试对来自大棕蝙蝠机翼十二个位置的43根毛发进行了测试，结果表明，它们的固有频率与长度成反比，范围为3.7至84.5 kHz。计算得出，平均翼毛的杨氏模量为4.4 GPa，可与大鼠胡须或节肢动物气流感应毛发相媲美。

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