Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae)

IF 3.8 4区工程技术 Q1 BIOCHEMICAL RESEARCH METHODS

IET nanobiotechnology Pub Date : 2022-05-26 DOI:10.1049/nbt2.12089

Longhai Li, Wei Sun, Ce Guo, Huafeng Guo, Liu Lili, Ping Yu

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引用次数: 1

Abstract

Scanning electron microscopy (SEM) was used to observe the macroscopic, microscopic, and cross-sectional structures of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae), and a mathematical model of a claw was used to investigate the structure–function relationships. To improve the quality of the SEM images, a non-local means (NLM) algorithm and an improved NLM algorithm were applied. After comparison and analysis of five classical edge-detection algorithms, the boundaries of the structural features of the claw were extracted based on a B-spline wavelet algorithm, and the results showed that the variable curvature of the beetle claw enhances its adhesion force and improves its strength. Adhesion models of the claw were established, and the mechanical properties of its biomaterials were measured using nanoindentation. Considering that the presence of water can affect the hardness and Young's modulus, both ‘dry’ and ‘wet’ samples were examined. For the dry samples, the hardness and Young's modulus were 0.197 ± 0.074 GPa and 1.105 ± 0.197 GPa, respectively, whereas the respective values for the wet samples were both lower at 0.071 ± 0.030 GPa and 0.693 ± 0.163 GPa. This study provides data that can inform the design of climbing robots.

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小圆蝽爪爪的数学模型及纳米压痕特性(鞘翅目:圆蝽科)

采用扫描电子显微镜(SEM)观察了布奎蝶科(Cyrtotrachelus buqueti Guer)爪的宏观、微观和横截面结构，并建立了爪的数学模型，探讨了爪的结构-功能关系。为了提高扫描电镜图像的质量，采用了非局部均值(NLM)算法和改进的NLM算法。通过对五种经典边缘检测算法的比较分析，基于b样条小波算法提取了甲虫爪结构特征的边界，结果表明，甲虫爪的变曲率增强了其附着力，提高了其强度。建立了仿生爪的粘附模型，并利用纳米压痕技术对其生物材料的力学性能进行了测试。考虑到水的存在会影响硬度和杨氏模量，对“干”和“湿”样品进行了测试。干燥样品的硬度和杨氏模量分别为0.197±0.074 GPa和1.105±0.197 GPa，而湿样品的硬度和杨氏模量分别为0.071±0.030 GPa和0.693±0.163 GPa。本研究提供的数据可以为攀爬机器人的设计提供参考。

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来源期刊

IET nanobiotechnology 工程技术-纳米科技

CiteScore

6.20

自引率

4.30%

发文量

审稿时长

1 months

期刊介绍： Electrical and electronic engineers have a long and illustrious history of contributing new theories and technologies to the biomedical sciences. This includes the cable theory for understanding the transmission of electrical signals in nerve axons and muscle fibres; dielectric techniques that advanced the understanding of cell membrane structures and membrane ion channels; electron and atomic force microscopy for investigating cells at the molecular level. Other engineering disciplines, along with contributions from the biological, chemical, materials and physical sciences, continue to provide groundbreaking contributions to this subject at the molecular and submolecular level. Our subject now extends from single molecule measurements using scanning probe techniques, through to interactions between cells and microstructures, micro- and nano-fluidics, and aspects of lab-on-chip technologies. The primary aim of IET Nanobiotechnology is to provide a vital resource for academic and industrial researchers operating in this exciting cross-disciplinary activity. We can only achieve this by publishing cutting edge research papers and expert review articles from the international engineering and scientific community. To attract such contributions we will exercise a commitment to our authors by ensuring that their manuscripts receive rapid constructive peer opinions and feedback across interdisciplinary boundaries. IET Nanobiotechnology covers all aspects of research and emerging technologies including, but not limited to: Fundamental theories and concepts applied to biomedical-related devices and methods at the micro- and nano-scale (including methods that employ electrokinetic, electrohydrodynamic, and optical trapping techniques) Micromachining and microfabrication tools and techniques applied to the top-down approach to nanobiotechnology Nanomachining and nanofabrication tools and techniques directed towards biomedical and biotechnological applications (e.g. applications of atomic force microscopy, scanning probe microscopy and related tools) Colloid chemistry applied to nanobiotechnology (e.g. cosmetics, suntan lotions, bio-active nanoparticles) Biosynthesis (also known as green synthesis) of nanoparticles; to be considered for publication, research papers in this area must be directed principally towards biomedical research and especially if they encompass in vivo models or proofs of concept. We welcome papers that are application-orientated or offer new concepts of substantial biomedical importance Techniques for probing cell physiology, cell adhesion sites and cell-cell communication Molecular self-assembly, including concepts of supramolecular chemistry, molecular recognition, and DNA nanotechnology Societal issues such as health and the environment Special issues. Call for papers: Smart Nanobiosensors for Next-generation Biomedical Applications - https://digital-library.theiet.org/files/IET_NBT_CFP_SNNBA.pdf Selected extended papers from the International conference of the 19th Asian BioCeramic Symposium - https://digital-library.theiet.org/files/IET_NBT_CFP_ABS.pdf