Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars
The force-depth behavior of indentation into fibrillar-structured surfaces such as those consisting of forests of micro- or nanoscale tubes or rods is a depth-dependent behavior governed by compression, bending, and buckling of the nanotubes. Using a micromechanical model of the indentation process,...
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| Format: | Article |
| Language: | en_US |
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ASME International
2013
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| Online Access: | http://hdl.handle.net/1721.1/76633 https://orcid.org/0000-0003-3511-5679 https://orcid.org/0000-0002-2193-377X |
| _version_ | 1811082500873650176 |
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| author | Wang, Lifeng Ortiz, Christine Boyce, Mary Cunningham |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Wang, Lifeng Ortiz, Christine Boyce, Mary Cunningham |
| author_sort | Wang, Lifeng |
| collection | MIT |
| description | The force-depth behavior of indentation into fibrillar-structured surfaces such as those consisting of forests of micro- or nanoscale tubes or rods is a depth-dependent behavior governed by compression, bending, and buckling of the nanotubes. Using a micromechanical model of the indentation process, the effective elastic properties of the constituent tubes or rods as well as the effective properties of the forest can be deduced from load-depth curves of indentation into forests. These studies provide fundamental understanding of the mechanics of indentation of nanotube forests, showing the potential to use indentation to deduce individual nanotube or nanorod properties as well as the effective indentation properties of such nanostructured surface coatings. In particular, the indentation behavior can be engineered by tailoring various forest features, where the force-depth behavior scales linearly with tube areal density (m, number per unit area), tube moment of inertia (I), tube modulus (E), and indenter radius (R) and scales inversely with the square of tube length (L[superscript 2]), which provides guidelines for designing forests whether to meet indentation stiffness or for energy storage applications in microdevice designs. |
| first_indexed | 2024-09-23T12:04:25Z |
| format | Article |
| id | mit-1721.1/76633 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:04:25Z |
| publishDate | 2013 |
| publisher | ASME International |
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| spelling | mit-1721.1/766332022-09-27T23:54:38Z Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars Wang, Lifeng Ortiz, Christine Boyce, Mary Cunningham Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Wang, Lifeng Ortiz, Christine Boyce, Mary Cunningham The force-depth behavior of indentation into fibrillar-structured surfaces such as those consisting of forests of micro- or nanoscale tubes or rods is a depth-dependent behavior governed by compression, bending, and buckling of the nanotubes. Using a micromechanical model of the indentation process, the effective elastic properties of the constituent tubes or rods as well as the effective properties of the forest can be deduced from load-depth curves of indentation into forests. These studies provide fundamental understanding of the mechanics of indentation of nanotube forests, showing the potential to use indentation to deduce individual nanotube or nanorod properties as well as the effective indentation properties of such nanostructured surface coatings. In particular, the indentation behavior can be engineered by tailoring various forest features, where the force-depth behavior scales linearly with tube areal density (m, number per unit area), tube moment of inertia (I), tube modulus (E), and indenter radius (R) and scales inversely with the square of tube length (L[superscript 2]), which provides guidelines for designing forests whether to meet indentation stiffness or for energy storage applications in microdevice designs. National Science Foundation (U.S.). Materials Research Science and Engineering Centers (Program) (Award DMR-0819762) Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Contract (W911NF-07-D- 0004) 2013-01-29T21:47:47Z 2013-01-29T21:47:47Z 2010-12 2010-08 Article http://purl.org/eprint/type/JournalArticle 0094-4289 http://hdl.handle.net/1721.1/76633 Wang, Lifeng, Christine Ortiz, and Mary C. Boyce. “Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars.” Journal of Engineering Materials and Technology 133.1 (2011): 011014. ©2011 American Society of Mechanical Engineers https://orcid.org/0000-0003-3511-5679 https://orcid.org/0000-0002-2193-377X en_US http://dx.doi.org/10.1115/1.4002648 Journal of Engineering Materials and Technology Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf ASME International ASME |
| spellingShingle | Wang, Lifeng Ortiz, Christine Boyce, Mary Cunningham Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars |
| title | Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars |
| title_full | Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars |
| title_fullStr | Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars |
| title_full_unstemmed | Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars |
| title_short | Mechanics of Indentation into Micro- and Nanoscale Forests of Tubes, Rods, or Pillars |
| title_sort | mechanics of indentation into micro and nanoscale forests of tubes rods or pillars |
| url | http://hdl.handle.net/1721.1/76633 https://orcid.org/0000-0003-3511-5679 https://orcid.org/0000-0002-2193-377X |
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