论文标题
用巨型\ k {appa}介电特性开发极性列液体
Development of polar nematic fluids with giant-\k{appa} dielectric properties
论文作者
论文摘要
表现出异常高的介电介电常数的超高 - \ k {appa}材料被认为是多种下一代光子和电子设备的潜在候选物。通常，实现高\ k {appa}状态的高介电性需要低的材料对称性，因此大多数发现的高\ k {appa}材料都是对称性晶体的晶体。关于流体高 - \ k {appa}介电的报道稀缺。在这里，我们证明了由机器学习分析支持的有理分子设计，它引入了非对称分子的高极性，成功地实现了超高 - \ k {appa}流体材料（介电介电常数，ε> 104），并具有强烈的第二次谐波产生，并具有强度的第二次谐波产生。对于所有合成材料，确认极性结构是相同的。我们的实验和计算计算揭示了独特的定向结构以及新兴的极性。此外，采用这种策略来进行高分子重量系统，还将新型材料类别从单体扩展到极性聚合物材料，从而形成了自发对称性破坏的极性软质。
Super-high-\k{appa} materials that exhibit exceptionally high dielectric permittivity are recognized as potential candidates for a wide range of next-generation photonic and electronic devices. Generally, the high dielectricity for achieving a high-\k{appa} state requires a low symmetry of materials so that most of the discovered high-\k{appa} materials are symmetry-broken crystals. There are scarce reports on fluidic high-\k{appa} dielectrics. Here we demonstrate a rational molecular design, supported by machine-learning analyses, that introduces high polarity to asymmetric molecules, successfully realizing super-high-\k{appa} fluid materials (dielectric permittivity, ε > 104) and strong second harmonic generation with macroscopic spontaneous polar ordering. The polar structures are confirmed to be identical for all the synthesized materials. Our experiments and computational calculation reveal the unique orientational structures coupled with the emerging polarity. Furthermore, adopting this strategy to high-molecular-weight systems additionally extends the novel material category from monomer to polar polymer materials, creating polar soft matters with spontaneous symmetry breaking.
