Short range ordered (SRO) plasmonic nanohole arrays have a distinct surface plasmon polariton resonance in the visible region and exhibit an excellent sensing capability toward changes in the surrounding refractive index. While SRO and perfectly ordered plasmonic hole arrays have similar sensing properties, SRO arrays have clear advantages in fabrication, simplicity, and scalability. In this study, we use SRO gold nanoholes, which are subjected to pressure and temperature cycles, for vacuum and temperature sensing. The response of the transmission spectra to pressure changes in the range 10-3-105 Pa and temperature scans in the range 20-400 °C was recorded. Upon pressure cycling, a reversible response was observed. Upon initial temperature annealing, an irreversible blue shift in the resonance dip position was observed. Upon further temperature cycling, the resonance dip position shifts reversibly, with a notable red shift upon temperature increase. The results are discussed and interpreted based on possible molecular adsorption/desorption upon pressure cycling and in terms of the gold film's recrystallization, thermal expansion, and free electron density variations.

中文翻译：

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在金纳米孔阵列上，高度敏感的压力和温度引起的SPP共振位移。

短程有序（SRO）等离子体纳米孔阵列在可见光区域具有明显的表面等离子体激元共振，并表现出对周围折射率变化的出色传感能力。虽然SRO和完美排序的等离激元孔阵列具有相似的感测特性，但SRO阵列在制造，简单性和可伸缩性方面具有明显的优势。在这项研究中，我们使用经受压力和温度循环的SRO金纳米孔进行真空和温度感测。记录了透射光谱对10-3-105 Pa范围内的压力变化和20-400°C范围内的温度扫描的响应。在压力循环中，观察到可逆的响应。在初始温度退火后，在共振下降位置观察到不可逆的蓝移。在进一步的温度循环中，共振骤降位置可逆地移动，随着温度升高，明显的红移。基于压力循环时可能发生的分子吸附/解吸以及金膜的重结晶，热膨胀和自由电子密度变化，对结果进行了讨论和解释。