论文标题
光致变色单晶的光学近场依赖历史的纳米光异构化
History-dependent nano-photoisomerization by optical near-field in photochromic single crystals
论文作者
论文摘要
我们通过光学近场相互作用通过顺序形成光子晶体中的多个记忆途径来证明历史依赖性或动态纳米光异构化。我们观察到通过双探针光学近场显微镜穿过光异构化记忆途径的入射光子，其中一个探针位于前表面以进行局部激发，另一个探针在后面进行近场观察。通过两次进行局部近场激发，但在空间不同的位置下，我们观察到了第一个记忆途径和第二个内存途径之间的近场输出模式。也就是说，添加的内存途径仅在先前形成的内存路径上形成。我们还确认在形成第二个内存途径后保留了第一个内存途径。该结果表明，日记甲烯晶体中光学近场的光异构化具有历史依赖性，从而导致使用纳米尺度上的光 - 含量相互作用，从而导致大脑样动态信息记忆。
We demonstrate history-dependent or dynamic nano-photoisomerization by sequential formation of multiple memory pathways in photochromic crystals via optical near-field interactions. We observed the incident photons passing through the photoisomerization memory pathways by a double-probe optical near-field microscope, with one probe located on the front surface for local excitation and the other on the rear surface for near-field observation. By carrying out localized near-field excitation twice but at spatially different positions, we observed negatively correlated near-field output patterns between the first memory pathway and the second memory pathway. That is, the added memory pathway was formed exclusively to the previously formed memory pathway. We also confirmed that the first memory pathway was preserved after the second memory pathway was formed. This result indicates that photoisomerization by an optical near-field in diarylethene crystals has a history dependence, leading to brain-like dynamic information memorization using light-matter interactions on the nanometer-scale.
