Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae)
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 im...
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| Format: | Article |
| Language: | English |
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Wiley
2022-08-01
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| Series: | IET Nanobiotechnology |
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| Online Access: | https://doi.org/10.1049/nbt2.12089 |
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| author | Longhai Li Wei Sun Ce Guo Huafeng Guo Liu Lili Ping Yu |
| author_facet | Longhai Li Wei Sun Ce Guo Huafeng Guo Liu Lili Ping Yu |
| author_sort | Longhai Li |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-86d8e7634feb44168634122100629c93 |
| institution | Kabale University |
| issn | 1751-8741 1751-875X |
| language | English |
| publishDate | 2022-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Nanobiotechnology |
| spelling | doaj-art-86d8e7634feb44168634122100629c932025-02-03T06:47:35ZengWileyIET Nanobiotechnology1751-87411751-875X2022-08-0116621122410.1049/nbt2.12089Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae)Longhai Li0Wei Sun1Ce Guo2Huafeng Guo3Liu Lili4Ping Yu5School of Mechanical and Electrical Engineering Xuzhou University of Technology Xuzhou ChinaSchool of Mechanical and Electrical Engineering Xuzhou University of Technology Xuzhou ChinaInstitute of Bio‐inspired Structure and Surface Engineering College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics Nanjing ChinaSchool of Mechanical and Electrical Engineering Xuzhou University of Technology Xuzhou ChinaSchool of Mechanical and Electrical Engineering Xuzhou University of Technology Xuzhou ChinaSchool of Mechanical and Electrical Engineering Xuzhou University of Technology Xuzhou ChinaAbstract 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.https://doi.org/10.1049/nbt2.12089beetle clawmathematical modelmechanical propertiesmicro‐structuresnanoindentation |
| spellingShingle | Longhai Li Wei Sun Ce Guo Huafeng Guo Liu Lili Ping Yu Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae) IET Nanobiotechnology beetle claw mathematical model mechanical properties micro‐structures nanoindentation |
| title | Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae) |
| title_full | Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae) |
| title_fullStr | Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae) |
| title_full_unstemmed | Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae) |
| title_short | Mathematical model and nanoindentation properties of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae) |
| title_sort | mathematical model and nanoindentation properties of the claws of cyrtotrachelus buqueti guer coleoptera curculionidae |
| topic | beetle claw mathematical model mechanical properties micro‐structures nanoindentation |
| url | https://doi.org/10.1049/nbt2.12089 |
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