Photonic Crystals Fabricated by Two-Photon Polymerization with Mechanical Defects
Photonic Crystals Fabricated by Two-Photon Polymerization with Mechanical Defects
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DOI：
10.3390/opt4020021
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发表时间：
2023-06-01
期刊：
影响因子：
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通讯作者：
Kim, Young-Ki
中科院分区：
文献类型：
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作者：
Stinson, Victoria Paige;Shuchi, Nuren;Kim, Young-Ki
由于一维光子晶体能够产生高反射光子带隙，因此在传感应用中已经使用了几十年。在本研究中，用双光子聚合法制备了由单一光敏聚合物（IP-Dip）组成的具有低、高密度交替层的一维光子晶体。首次对光子晶体进行了修饰，使其包括一个中心缺陷层，与周围层相比，该缺陷层具有不同的弹性特性。观察到缺陷模共振可以通过压缩力来控制。实验测量的光谱与模型数据吻合得很好。计算了缺陷层弯曲设计的力学性能。计算的弹簧常数与报道的用双光子聚合在这个尺度上制造的微弹簧的大小相似。本研究的结果首次证明了通过机械刺激成功地控制了双光子聚合制备的一维光子晶体中的缺陷共振。这种结构可以应用于微型机器人和微型光电机械系统（MOEMSs）等领域，这些领域需要对机械波动进行光学传感。
One-dimensional photonic crystals have been used in sensing applications for decades, due to their ability to induce highly reflective photonic bandgaps. In this study, one-dimensional photonic crystals with alternating low- and high-density layers were fabricated from a single photosensitive polymer (IP-Dip) by two-photon polymerization. The photonic crystals were modified to include a central defect layer with different elastic properties compared to the surrounding layers, for the first time. It was observed that the defect mode resonance can be controlled by compressive force. Very good agreement was found between the experimentally measured spectra and the model data. The mechanical properties of the flexure design used in the defect layer were calculated. The calculated spring constant is of similar magnitude to those reported for microsprings fabricated on this scale using two-photon polymerization. The results of this study demonstrate the successful control of a defect resonance in one-dimensional photonic crystals fabricated by two-photon polymerization by mechanical stimuli, for the first time. Such a structure could have applications in fields, such as micro-robotics, and in micro-opto-electro-mechanical systems (MOEMSs), where optical sensing of mechanical fluctuations is desired.