SBIR Phase I: THz Imaging Focal Plane Array

SBIR 第一阶段：太赫兹成像焦平面阵列

• 批准号: 0441165
• 负责人: Oliver Edwards
• 金额: $ 10万
• 依托单位: ZYBERWEAR INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-01-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0441165&HistoricalAwards=false
• 关键词: SBIR; Phase; THz; Imaging; Focal

INTELLECTUAL MERIT This Small Business Innovation Research Phase I project addresses development of a terahertz imaging focal plane array. The detectors are thin cantilevered strips whose physical properties change with temperature. The research objectives include modeling and design of the cantilevers, assessment of optical vs. electronic irradiance readout, means for maximizing irradiance absorption, and techniques for image array readout. These objectives will be pursued within the framework of Phase II production of functioning arrays. From earlier work in the thermal infrared, the detector array is projected to be very sensitive compared to existing bolometers, with a response time permitting high frame rates, high pixel count, and development of imaging arrays of high resolution (pixel count). BROADER IMPACT Terahertz radiation imaging offers many of the benefits of X-rays, without ionizing radiation. THz imaging spectroscopy offers a new and very powerful tool for selectively imaging and identifying complex chemical species. Availability of a producible and cost-effective THz-imaging focal plane array with high pixel count, high sensitivity and high frame rate will enable production of new classes of systems for security (imaging through clothing and packaging materials, metal detection), identification and recognition (using subcutaneous blood vessel patterns), taggants (with THz-based coding buried in plastic cards or chips), diagnostic medicine (non-invasive exploration of subcutaneous tissue, interior thermal mapping), and rapid identification and characterization of organic and pharmaceutical materials.

这个小型企业创新研究第一阶段项目致力于开发太赫兹成像焦平面阵列。探测器是细长的悬臂条，其物理性质随温度变化。研究目标包括悬臂的建模和设计，光学与电子辐照度读数的评估，最大化辐照度吸收的方法，以及图像阵列读出技术。这些目标将在第二阶段生产功能阵列的框架内实现。从热红外的早期工作来看，与现有的热辐射计相比，探测器阵列预计将非常敏感，响应时间允许高帧率，高像素数，并开发高分辨率（像素数）的成像阵列。更广泛的影响太赫兹辐射成像提供了x射线的许多好处，没有电离辐射。太赫兹成像光谱为选择性成像和识别复杂化学物质提供了一种新的非常强大的工具。具有高像素、高灵敏度和高帧率的可生产且具有成本效益的太赫兹成像焦平面阵列，将能够生产用于安全（通过服装和包装材料成像、金属探测）、识别和识别（使用皮下血管模式）、标记（将基于太赫兹的编码埋在塑料卡或芯片中）、诊断医学（对皮下组织进行非侵入性探测）、内部热成像)，以及有机和药物材料的快速识别和表征。