دورية أكاديمية
Diamond-structured nanonetwork gold as mechanical metamaterials from bottom-up approach
العنوان: | Diamond-structured nanonetwork gold as mechanical metamaterials from bottom-up approach |
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المؤلفون: | Suhail K. Siddique, Hassan Sadek, Chi-Wei Wang, Chang-Chun Lee, Cheng-Yuan Tsai, Shou-Yi Chang, Chia-Lin Li, Chun-Hway Hsueh, Rong-Ming Ho |
المصدر: | NPG Asia Materials, Vol 15, Iss 1, Pp 1-12 (2023) |
بيانات النشر: | Nature Portfolio, 2023. |
سنة النشر: | 2023 |
المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Biotechnology |
مصطلحات موضوعية: | Materials of engineering and construction. Mechanics of materials, TA401-492, Biotechnology, TP248.13-248.65 |
الوصف: | Abstract Herein, this work aims to develop a facile method for the fabrication of metallic mechanical metamaterial with a well-ordered diamond structure from a bottom-up approach using a self-assembled block copolymer for templated electrochemical deposition. By controlling the effective volume fraction of PDMS in PS-b-PDMS via solvent annealing followed by HF etching of PDMS, it is feasible to obtain nanoporous PS with diamond-structured nanochannels and used it as a template for templated electrochemical deposition. Subsequently, well-ordered nanonetwork gold (Au) can be fabricated. As evidenced by nanoindentation and micro-compression tests, the mechanical properties of the diamond-structured Au after removal of PS give the combination of lightweight and mechanically robust characteristics with an exceptionally high reduced elastic modulus of 11.9 ± 0.6 GPa and yield strength of 193 ± 11 MPa above the Hashin-Shtrikman upper bound of 72 MPa with a bending-dominated structure at equivalent density. The corresponding deformation mechanism can be elucidated by morphological observations experimentally and finite element analysis (FEA) numerically. This work demonstrates the bottom-up approach to fabricating metallic monolith with diamond structure in the nanoscale, giving a superior performance as mechanical metamaterials. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1884-4057 |
Relation: | https://doaj.org/toc/1884-4057 |
DOI: | 10.1038/s41427-023-00483-y |
URL الوصول: | https://doaj.org/article/37d8b118e74042dabcc6c8ed24f6c121 |
رقم الأكسشن: | edsdoj.37d8b118e74042dabcc6c8ed24f6c121 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 18844057 |
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DOI: | 10.1038/s41427-023-00483-y |