Academic Journal
Diamond-structured nanonetwork gold as mechanical metamaterials from bottom-up approach
| العنوان: | Diamond-structured nanonetwork gold as mechanical metamaterials from bottom-up approach |
|---|---|
| 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 الانضمام: | edsdoj.37d8b118e74042dabcc6c8ed24f6c121 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 18844057 |
|---|---|
| DOI: | 10.1038/s41427-023-00483-y |