With the rapid development of communication technology, human-computer interaction, and other fields, more functional requirements have been conveyed to the sensors. It is well known that metallic nanostructures are exceptional tools to manipulate light at nanoscale owing to their ability to support surface plasmons. By modulating the localized surface plasmon resonance (LSPR) effect, the near-field absorption of metal nanoparticles (NPs) array under light stimulation shows a significant difference. In this study, we successfully leveraged the interfacial LSPR effect to overcome the spectral insensitivity of the pyroelectric devices. For instance, the demonstrated pyroelectric devices had an interface modified with Ag or Au NPs respectively and exhibited the best current-response capability at 405 nm or 940 nm. In addition, its wavelength selection ratio was increased by a factor of 80. Remarkably, based on the femtosecond plasma decay exothermic process, plasmonic metal NPs and ZnO nanowires (NWs) have a photothermal-pyroelectric-plasmonic coupling effect that leads to ultra-fast heating of NWs. This study includes an in-sight analysis of the photothermal-pyroelectric-plasmonic coupling mechanism, which constitutes an accessible method to develop the potential application of pyroelectric detectors in new functional fields.

随着通信技术，人机交互等领域的飞速发展，对传感器的功能要求越来越高。众所周知，由于金属纳米结构具有支撑表面等离子体激元的能力，因此它们是在纳米级操纵光的出色工具。通过调节局部表面等离子体共振（LSPR）效应，在光刺激下金属纳米颗粒（NPs）阵列的近场吸收表现出显着差异。在这项研究中，我们成功地利用了界面LSPR效应来克服热释电器件的光谱不敏感性。例如，所展示的热电器件具有分别用Ag或Au NPs修饰的界面，并在405 nm或940 nm处表现出最佳的电流响应能力。此外，其波长选择比增加了80倍。值得注意的是，基于飞秒等离子体衰减放热过程，等离激元金属NP和ZnO纳米线（NW）具有光热-热电-等离激元耦合效应，可导致NW的超快加热。这项研究包括对光热-热电-等离子体耦合机理的直观分析，它构成了开发热电探测器在新功能领域中的潜在应用的便捷方法。