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| Bridging Land-Surface Fluxes and Aerosol Concentrations to Triggering Convective Rainfall | |
| 项目编号 | DE-SC0011075 |
| Fuentes, Jose D | |
| 项目主持机构 | The Pennsylvania State University |
| 开始日期 | 2014 |
| 结束日期 | 2017-12-31 |
| 英文摘要 | In the context of this proposal, partner 1 (CIRIMAT, Toulouse) of the MONaSens project has recently reported new efficient composite thin film materials based on the association of cuprospinel ferrite with copper oxide to detect weakly reactive molecules (A. CHAPELLE et al., Sens. Actuators B, 153 (2011) 117-124.). In comparison with the bibliographical data, these results obtained with a simplified test device are very promising due to the low operating temperature and the high sensitivity of the material. In parallel, recent observations on heat treatments of nanocrystalline Mg ferrite carried out by partner 2 (Indian Institute Technology, Bombay) reveal structural changes associated with an improved sensitivity towards gases (unpublished data). A preliminary work was initiated between the two partners due to 2012 CHARPARK Fellowship Program sponsored by the French Embassy in India. These works showed the possibility of displaying significant changes in the transport properties of CuO and spinel ferrite composites with CO2 content in fine powders. The objectives of the MONaSens project are dedicated to a fundamental research on p-, n-type semiconducting oxides nanocomposites design and preparation on the one hand and on the understanding of the influence of weakly reactive molecule adsorption, especially CO2, on their electrical properties on the other hand. The final aim of this project is to find interesting combinations of p- and n-types semiconducting oxides for detection of weakly reactive gas. Such new sensing systems could integrated in devices for air monitoring in confined space (aircraft, cars, offices, home…) or to control air quality in open spaces (cities, industrial sites…). The proposed collaborative project MONaSens aims to work on complex oxide systems including spinel ferrites and on their response towards sensing low reactive gases like CO2 by merging the experience of both partners. The MONASens project include working with sensors of various forms including pellets made from nanocrystalline powders, thick films prepared by screen printing and tape casting (using double doctor’s blade) and cover layers deposited by RF sputtering and PLD. This project also aims to probe the sensing mechanisms in order to understand the properties of certain p-n metal oxide systems for specific gases detection. The knowledge acquired during the project, will be used to improve performance of sensors (sensitivity, selectivity, stability, response and recovery times) and to develop adequate preparation process in a view of their potentially future manufacturing. |
| 学科分类 | 09 - 环境科学;06 - 生物科学 |
| 资助机构 | US-DOE |
| 项目经费 | 538833 |
| 项目类型 | Grant |
| 国家 | US |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/74766 |
| 推荐引用方式 GB/T 7714 | Fuentes, Jose D.Bridging Land-Surface Fluxes and Aerosol Concentrations to Triggering Convective Rainfall.2014. |
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