Degenerate Bandgaps in Magneto-Photonic Crystals and Magneto-Photonic Crystal Biochemical Sensors

“该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。“目的本研究将试图通过实验证明PI最近预测的新型磁可调光学带隙的存在。该项目将基于磁性石榴石薄膜的这种效应设计、制造和表征功能光子晶体结构。它将对一维和二维磁光光子晶体中的可控光子带隙进行理论和实验研究，并将制造和表征一种新型的高灵敏度on-该项目的智力价值在于研究新型磁可调光学带隙，该带隙是由局部光学简正模之间的耦合引起的，双折射磁光光子晶体 一个最近提出的光子态耦合机制的PI高度敏感的偏振响应折射率的变化，这些磁光子晶体将进行理论和实验研究，并应用于生物传感器的发展。这种光学生物传感器的独特之处在于它依赖于偏振态的变化作为其传导信号，其中存在非常敏感和成熟的检测技术，如椭圆偏振法。提出了广泛适用于有毒和无毒物质检测的光学生物传感的进展，其与最先进的无标签传感技术兼容并具有潜在的更好的灵敏度。该项目将通过与密歇根理工大学的暑期青年方案及其妇女参与工程方案合作，让高中妇女和美洲土著学生参与。 拟议的活动还将寻求与工业界发展伙伴关系，以探索磁光子晶体的技术应用。 已经开始与Integrated Photonics，Inc.联系。用于光学生物传感器的开发。

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."ObjectivesThis study will seek to demonstrate experimentally the existence of new types of magnetically tunable optical band gaps recently predicted by the PIs. The project will design, fabricate and characterize functional photonic crystal structures based on this effect in magnetic garnet films. It will conduct a theoretical and experimental study of controllable photonic band gaps in one- and two-dimensional magneto-optic photonic crystals, and will fabricate and characterize a new type of highly sensitive on-chip biochemical sensor based on this new effect.Intellectual MeritThe project's intellectual merit resides in the investigation of novel magnetically tunable optical band gaps resulting from the coupling between local optical normal modes in birefringent magneto-optic photonic crystals. A recently proposed photonic-state coupling mechanism by the PIs for highly sensitive polarization response to refractive index changes in these magneto-photonic crystals will be studied theoretically and experimentally and applied to biosensor development. The proposed optical biosensor is unique in that it relies on changes in polarization state as its transduction signal, where extremely sensitive and mature detection techniques such as ellipsometry exist.Broader ImpactBiosensors have vast applications to environmental monitoring, healthcare and homeland security. An advance in optical bio-sensing broadly applicable to toxic and non-toxic substance detection is proposed with compatible and potentially better sensitivity to the most advanced tag-free sensing techniques available. This project will involve participation of high school women and Native American students by partnering with Michigan Tech's Summer Youth Program and its Women in Engineering Program. The proposed activity will also seek to develop partnerships with industry to explore technological applications of magneto-photonic crystals. Contacts have already been initiated with Integrated Photonics, Inc. for the development of optical biosensors.