GOALI: Novel Emissive MEMS devices from plasmonic -photonic crystals

智能优点：化学物质的快速检测是新一代气体传感器广泛应用的关键。由于每种气体在红外光谱中都有独特的吸收线，光谱气体传感器提供了对物种的决定性检测。光谱气体传感器中的关键元件是发射体。离子光学公司研制成功了一种基于独特的金属介电光子晶体的调谐红外发射器，它由驻留在光子晶体上的薄金属层中的亚波长孔阵列组成。这个目标项目将是爱荷华州和马萨诸塞州沃尔瑟姆离子光学公司之间的大学-行业合作。在爱荷华州，一种严格的电磁散射矩阵方法将可靠地模拟、预测和设计这些新型金属介质光子晶体的光学和发射特性。金属介电光子晶体中的新型超晶格缺陷和孔洞失真将被设计成提供窄可调的发射模式。这些结构将在离子光学公司制造，用于气体传感器的增强型红外发射器。孔阵列的扭曲将增强选择性缺陷模，而抑制其他缺陷模。将设计电信波长(1.55)和光学频率的发射器。广泛影响：离子光学公司将利用高性能发射器设计来制造商业传感器。这个GALI项目产生的增强型高灵敏度传感器的进步将被用于医疗应用、国土安全和工业环境，提供广泛的社会效益。研究生课程将讨论该项目的主要进展。将特别努力从代表性不足的群体中招收学生参加这一项目。爱荷华州立大学和离子光学公司的人员将进行联合访问。研究生将通过在离子光学工作的时间获得宝贵的工业经验和培训。精通传感器开发的研究生将接受培训，以加入这一不断增长的技术领域的劳动力大军。

AbstractIntellectual Merit: The prompt detection of chemical species is the key to a new generation of gas sensors for wide-ranging applications. Spectroscopic gas sensors offer conclusive detection of species since each gas has unique absorption lines in the infrared spectrum. The critical element in the spectroscopic gas sensor is the emitter. A tuned infrared emitter based on a unique metallo-dielectric photonic crystal has been successfully developed at Ion-Optics, consisting of a sub-wavelength array of holes in a thin metal layer residing on a photonic crystal. This GOALI project will be a University-Industry collaboration between Iowa State and Ion-Optics, Waltham, MA. At Iowa State, a rigorous electromagnetic scattering-matrix method will reliably model, predict and design the optical and emissive properties of these novel metallo-dielectric photonic crystals. Novel superlattice defects and distortions of hole apertures in the metallo-dielectric photonic crystal will be designed to provide narrow tunable emissive modes. These structures will be fabricated at Ion-Optics for enhanced infrared emitters for gas sensors. Distortions of the hole arrays will enhance selective defect modes and suppress others. Emitters at telecommunications wavelengths (1.55 ) and optical frequencies will be designed.Broader Impacts: High-performing emitter designs will be utilized by Ion Optics for fabrication of commercial sensors. Enhanced high-sensitivity sensor advances emerging from this GOALI project will be employed in medical applications, homeland security, and industrial environments, providing widespread societal benefits. A graduate course will discuss key advances from this project. Special efforts will be made to recruit students from underrepresented groups for this project. There will be joint visits between Iowa State and Ion-Optics personnel. Graduate students will have valuable industrial experience and training from time spent at Ion-Optics. Graduate students proficient in sensor development will be trained to join the workforce in this growing technological area.