甲虫鞘翅的结构设计变化,Advanced Functional Materials

当前位置： X-MOL 学术 › Adv. Funct. Mater. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

甲虫鞘翅的结构设计变化
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-08-15 , DOI: 10.1002/adfm.202106468
Jesus Rivera _{1,

2} , Satoshi Murata ₃ , Maryam Sadat Hosseini ₄ , Adwait A. Trikanad ₄ , Robin James ₅ , Allison Pickle ₁ , Nicholas Yaraghi ₁ , Nana Matsumoto ₃ , Wen Yang ₅ , Dilworth Y. Parkinson ₆ , Harold S. Barnard ₆ , Pablo Zavattieri ₄ , Atsushi Arakaki ₃ , David Kisailus _{1,

5}

Affiliation

甲虫通常使用它们的保护性翅膀覆盖物或鞘翅来保护它们的膜质后翅免受环境影响。一些陆生物种的鞘翅进化出更大的保护作用，能够保护生物体免受强大的敌对捕食者的侵害。这些生物复合材料的结构-功能关系确定了角质层的结构和化学变化如何被调整以产生轻质、抗冲击的复合材料。具体来说，一种能够飞行的树栖甲虫（Trypoxylus dichotomus）和一种不能飞行的陆生甲虫（Phloeodes diabolicus）的鞘翅结构，进行比较以了解他们不同的环境需求如何塑造鞘翅以促进战斗或抵抗致命的捕食者袭击。机械和微观结构分析显示P。diabolicus具有更硬、更硬的鞘翅，其中包含贯穿厚度的纤维，以抵抗弯曲和穿刺施加的更大机械应力。相反，T的鞘翅。dichotomus具有柔顺结构，具有大空隙，有助于局部变形。弯曲强度和抗穿刺性的变化仍然归因于P。恶魔具有更厚的角质层，具有更大程度的交联和更多的内皮层。这些发现可能为用于轻质或能量吸收应用的复合材料的设计和制造提供有用的见解。

"点击查看英文标题和摘要"

Structural Design Variations in Beetle Elytra

Beetles typically use their protective wing coverings or elytra to shield their membranous hindwings from the environment. Elytra in some terrestrial species have evolved a greater protective role capable of shielding the organism from powerful antagonistic predators. The structure–function relationships of these biological composites identify how architectural and chemical variations of the cuticle are tuned to create light-weight, impact resistant composites. Specifically, the elytral structures of a tree dwelling beetle capable of flight, Trypoxylus dichotomus, and a terrestrial beetle incapable of flight, Phloeodes diabolicus, are compared to understand how their varied environmental needs forged the elytra to facilitate fight or resist fatal predator strikes. Mechanical and microstructural analysis reveals P. diabolicus has a harder, stiffer elytra that incorporate through-thickness fibers to resist greater mechanical stresses imposed by bending and puncture. Conversely, the elytra of T. dichotomus have a compliant structure with large voids that facilitates localized deformation. Variations in flexural strength and puncture resistance remain attributed to P. diabolicus possessing a thicker cuticle with a greater degree of cross-linking and an increased amount of endocuticular layers. These findings may provide useful insight into the design and manufacturing of composite materials for use in light-weight or energy-absorbing applications.

更新日期：2021-08-15

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南