纳米范德瓦耳斯原子-表面吸引力的研究
Exploring the van der Waals Atom-Surface attraction in the nanometric range
摘要：
范德华原子表面吸引力，缩放为C3 z-3，z为原子表面距离，预计在1-1000 nm的距离范围内有效，覆盖相互作用能的8-10个数量级。铯蒸气纳米电池使我们能够分析由6P 3/2-> 6D 5/2跃迁上的原子-表面吸引引起的光谱修改。在40-130 nm范围内，C3值与薄膜厚度无关，与理论预测一致。我们还讨论了探索短距离和大的相互作用能的具体利益。
英文摘要：
The van der Waals atom-surface attraction, scaling as C3 z-3 for z the atom-surface distance, is expected to be valid in the distance range 1-1000 nm, covering 8-10 orders of magnitudes in the interaction energy. A Cs vapour nanocell allows us to analyze the spectroscopic modifications induced by the atom-surface attraction on the 6P3/2->6D5/2 transition. The measured C3 value is found to be independent of the thickness in the explored range 40-130 nm, and is in agreement with an elementary theoretical prediction. We also discuss the specific interest of exploring short distances and large interaction energy.
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