Electrically driven optical metamaterials.
Electrically driven optical metamaterials.
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DOI：
10.1038/ncomms12017
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发表时间：
2016-06-22
影响因子：
16.6
通讯作者：
Degiron A
中科院分区：
文献类型：
--
作者：
Le-Van Q;Le Roux X;Aassime A;Degiron A
15年前超材料的出现为操纵电磁波提供了非同寻常的新方法。然而，这一领域的进展在整个电磁频谱中都是不平等的，特别是在寻找这种人造媒体的应用方面。特别是光学超材料，与在较低频率下开发的同类材料相比，与活性功能的兼容性较差。在通往设备的道路上，一个关键的障碍是，到目前为止，活跃的光学超材料是由光而不是电控制的，这使得它们无法集成到更大的电子系统中。在这里，我们介绍了基于金属纳米夹杂物与胶体量子点杂化的电致发光超材料。我们展示了这些微型模块中的每一个都可以被单独地调节以显示独立的光电特性(在电学特性、极化、颜色和亮度方面)，通过编织复杂的发光表面来展示它们的性能，最后讨论它们作为显示器和传感器的潜力。活性超材料在很大程度上受光控制，阻碍了电子系统的集成。在这里，作者介绍了基于金属纳米夹杂物与胶体量子点杂化的电致发光超材料，并使用这种方法来编织复杂的发光表面。
The advent of metamaterials more than 15 years ago has offered extraordinary new ways of manipulating electromagnetic waves. Yet, progress in this field has been unequal across the electromagnetic spectrum, especially when it comes to finding applications for such artificial media. Optical metamaterials, in particular, are less compatible with active functionalities than their counterparts developed at lower frequencies. One crucial roadblock in the path to devices is the fact that active optical metamaterials are so far controlled by light rather than electricity, preventing them from being integrated in larger electronic systems. Here we introduce electroluminescent metamaterials based on metal nano-inclusions hybridized with colloidal quantum dots. We show that each of these miniature blocks can be individually tuned to exhibit independent optoelectronic properties (both in terms of electrical characteristics, polarization, colour and brightness), illustrate their capabilities by weaving complex light-emitting surfaces and finally discuss their potential for displays and sensors. Active metamaterials are largely controlled by light, preventing integration in electronic systems. Here, the authors introduce electroluminescent metamaterials based on metal nano-inclusions hybridized with colloidal quantum dots and use this approach to weave intricate light-emitting surfaces.