Stochastic Stress Jumps Due to Soliton Dynamics in Two-Dimensional van der Waals Interfaces
| العنوان: | Stochastic Stress Jumps Due to Soliton Dynamics in Two-Dimensional van der Waals Interfaces |
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| المؤلفون: | Edmund Han, Elif Ertekin, Sunphil Kim, Pinshane Y. Huang, Jaehyung Yu, Emil Annevelink, Arend M. van der Zande |
| المصدر: | Nano Letters. 20:1201-1207 |
| بيانات النشر: | American Chemical Society (ACS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Nanoelectromechanical systems, Mechanical Engineering, Dynamics (mechanics), Bioengineering, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Stress (mechanics), Condensed Matter::Materials Science, symbols.namesake, Classical mechanics, symbols, Countable set, General Materials Science, Soliton, van der Waals force, Dislocation, 0210 nano-technology, Nanomechanics |
| الوصف: | The creation and movement of dislocations determine the nonlinear mechanics of materials. At the nanoscale, the number of dislocations in structures become countable, and even single defects impact material properties. While the impact of solitons on electronic properties is well studied, the impact of solitons on mechanics is less understood. In this study, we construct nanoelectromechanical drumhead resonators from Bernal stacked bilayer graphene and observe stochastic jumps in frequency. Similar frequency jumps occur in few-layer but not twisted bilayer or monolayer graphene. Using atomistic simulations, we show that the measured shifts are a result of changes in stress due to the creation and annihilation of individual solitons. We develop a simple model relating the magnitude of the stress induced by soliton dynamics across length scales, ranging from0.01 N/m for the measured 5 μm diameter to ∼1.2 N/m for the 38.7 nm simulations. These results demonstrate the sensitivity of 2D resonators are sufficient to probe the nonlinear mechanics of single dislocations in an atomic membrane and provide a model to understand the interfacial mechanics of different kinds of van der Waals structures under stress, which is important to many emerging applications such as engineering quantum states through electromechanical manipulation and mechanical devices like highly tunable nanoelectromechanical systems, stretchable electronics, and origami nanomachines. |
| تدمد: | 1530-6992 1530-6984 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cad416e7976ffe5b9574566a832d4bc https://doi.org/10.1021/acs.nanolett.9b04619 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....7cad416e7976ffe5b9574566a832d4bc |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15306992 15306984 |
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