Microscale Reflectance Spectrometry of Biological Thin Films

生物薄膜的微尺度反射光谱测定

• 批准号: 9605833
• 负责人: Peter Wong
• 金额: $ 8.75万
• 依托单位: Tufts University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-04-01 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9605833&HistoricalAwards=false
• 关键词: Microscale; Reflectance; Spectrometry; Biological; Thin

When biological thin-film thicknesses or feature dimensions are less than or equal to the order of magnitude as the wavelengths of solar radiation, several optical effects are present. Nature has developed these complex biological thin-film structures to take advantage of these microscale radiation phenomena in order to control the reflectance and absorption of solar radiation. There is a need for improved understanding in this field in order to determine the multiple functions of these structures. Moreover, as global changes affect the solar spectrum reaching earth, the effectiveness of the thin-film functions will be altered which in turn may affect the ecology. Additionally, there are lessons to be learned from biological thin-film structures which may prove to be important in sub-micron microelectronics, optical coatings, and solar absorbers. We propose to develop a numerical and experimental tool, the Microscale Reflectance Spectrometer, which can be used for these investigations. Specifically, the proposed technology will allow the radiative properties of biological thin-film structures to be measured and also compared against numerical simulations. The phenomenological modeling of light/film interaction will be improved for other biological instruments as well as for the microelectronics industry. We expect research that will stem from the use of this instrument to play a critical role in the understanding of the functions of the biological thin-film structures.

当生物薄膜厚度或特征尺寸小于或等于太阳辐射波长的数量级时，就会存在几种光学效应。大自然已经开发了这些复杂的生物薄膜结构，以利用这些显微镜辐射现象，以控制太阳辐射的反射率和吸收。为了确定这些结构的多个功能，需要改善该领域的理解。此外，随着全球变化影响到达地球的太阳光谱，将改变薄膜功能的有效性，进而影响生态学。 此外，还可以从生物薄膜结构中学到一些教训，这些结构可能被证明在亚微米微电子，光学涂层和太阳吸收器中很重要。 我们建议开发一种数值和实验工具，即显微镜反射光谱仪，可用于这些研究。 具体而言，所提出的技术将允许测量生物薄膜结构的辐射特性，并与数值模拟进行比较。光/膜相互作用的现象学建模将用于其他生物学仪器以及微电子行业。我们预计研究将源于该工具的使用在理解生物薄膜结构的功能中发挥关键作用。