发表机构
School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology; DUT-BSU Joint Institute, Dalian University of Technology; Institute of Energy, Higher School of High Voltage Engineering, Peter the Great St. Petersburg Polytechnic University（大连理工大学光电工程学院; 大连理工大学-莫斯科鲍曼国立技术大学联合学院; 彼得大帝圣彼得堡理工大学高等电压工程学院能源研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出一种基于铝膜的无扫描并行多波长SPR平台，通过多波长同时激发和CMOS解复用实现折射率色散实时指纹识别，消除机械误差，为现场传感提供新基准。
AI 中文摘要
折射率（RI）色散的实时表征对于先进光学传感至关重要，然而传统的表面等离子体共振（SPR）平台受限于贵金属（Au、Ag）的窄带宽以及顺序扫描的机械不稳定性。在此，我们报道了一种新型的基于Al的并行SPR平台，该平台克服了传统贵金属系统的带宽和时间限制。利用Al独特的低损耗宽带响应（通过抑制带间跃迁实现），我们设计了一个在450、520和635 nm波长下同时激发的系统。通过将光谱-角度复用与CMOS相机上的RGB通道解复用相结合，该平台实现了无需机械运动的色散曲线采集。经NaCl溶液验证，该系统展示了计量学精度以及与Cauchy色散模型的出色一致性。所提出的架构消除了时间漂移和振动误差，为实时色散表征树立了新基准。通过将传感与机械约束解耦，这项工作开创了一种紧凑、稳健的框架，用于下一代可现场部署的传感器，这些传感器能够通过独特的谱特征区分复杂分析物。
英文摘要
Real-time characterization of refractive index (RI) dispersion is pivotal for advanced optical sensing, yet conventional surface plasmon resonance (SPR) platforms are bottlenecked by the narrow bandwidth of noble metals (Au, Ag) and the mechanical instability of sequential scanning. Here, we report a novel Al-based parallel SPR platform that overcomes the bandwidth and temporal constraints of conventional noble-metal systems. Leveraging the unique low-loss broadband response of Al, enabled by the suppression of interband transitions, we engineered a system for simultaneous excitation at 450, 520, and 635 nm. By integrating spectral-angle multiplexing with RGB-channel demultiplexing on a CMOS camera, the platform achieved acquisition of dispersion profiles without mechanical motion. Validated against NaCl solutions, the system demonstrates metrological accuracy and exceptional agreement with Cauchy dispersion models. The proposed architecture eliminates temporal drift and vibration errors, establishing a new benchmark for real-time dispersion characterization. By decoupling sensing from mechanical constraints, this work pioneers a compact, robust framework for next-generation, field-deployable sensors capable of distinguishing complex analytes via their unique spectral signatures.
