Anomalous Scaling Laws of Dispersion Interactions in Anisotropic Nanostructures
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909667210297344 |
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| author | Pan, Hui Ren, Yuhua Wang, Jian-Sheng |
| author_facet | Pan, Hui Ren, Yuhua Wang, Jian-Sheng |
| contents | The van der Waals (vdW) dispersion interaction between two finite neutral objects typically follows the standard nonretarded $d^{-6}$ law. Here, we reveal an anomalous $d^{-10}$ scaling law between nanostructures with strong geometric or electric anisotropy, driven intrinsically by symmetry-restricted plasmon interactions. At finite anisotropy ratios, a scaling crossover from $d^{-10}$ to $d^{-6}$ occurs due to plasmon mode competition, marked by a finite critical separation. Furthermore, we demonstrate tunability of interlayer vdW forces in two-dimensional materials with strong in-plane electronic anisotropy. By pushing the conventional lower bound of vdW scaling laws, these findings open new opportunities for tailoring nanoscale forces, with potential applications in low-stiction nanomechanical devices, vdW superstructure assembly, metamaterials, and molecular simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_23830 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous Scaling Laws of Dispersion Interactions in Anisotropic Nanostructures Pan, Hui Ren, Yuhua Wang, Jian-Sheng Mesoscale and Nanoscale Physics Materials Science The van der Waals (vdW) dispersion interaction between two finite neutral objects typically follows the standard nonretarded $d^{-6}$ law. Here, we reveal an anomalous $d^{-10}$ scaling law between nanostructures with strong geometric or electric anisotropy, driven intrinsically by symmetry-restricted plasmon interactions. At finite anisotropy ratios, a scaling crossover from $d^{-10}$ to $d^{-6}$ occurs due to plasmon mode competition, marked by a finite critical separation. Furthermore, we demonstrate tunability of interlayer vdW forces in two-dimensional materials with strong in-plane electronic anisotropy. By pushing the conventional lower bound of vdW scaling laws, these findings open new opportunities for tailoring nanoscale forces, with potential applications in low-stiction nanomechanical devices, vdW superstructure assembly, metamaterials, and molecular simulations. |
| title | Anomalous Scaling Laws of Dispersion Interactions in Anisotropic Nanostructures |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2506.23830 |