Projets 2021
| Combiner nano-structuration de surface, microscopie plein champ et diagnostic spectroscopique : Le but du projet HREELM (High Resolution Electron Energy Loss Microscope) est de combiner une nouvelle source d'électrons hautement monochromatique du Laboratoire Aimé Cotton (LAC) avec les expériences de lithographie chimique contrôlée par électrons de l'Institut des Sciences Moléculaires d'Orsay (ISMO), et avec un microscope électronique spectroscopique plein champ et à haute résolution (Université de Mayence, JGU ; SPEC, CEA). Cette combinaison unique permettra la production et l’utilisation d’un faisceau d'électrons monoénergétiques (~1 meV), de très faible énergie (0-20 eV) et collimaté pour la structuration de surfaces à l'échelle nanométrique et comme outil de diagnostic. Son implémentation sur un nouveau microscope spectroscopique à champ complet, avec une haute résolution spatiale, énergétique, d'impulsion et temporelle (20 nm, peu de meV, 0,003 Å-1 et 150 ps, respectivement), ouvrira également la voie vers l'imagerie spectroscopique à haute résolution des états vibrationnels de surface (CEA/DRF/IRAMIS/SPEC). |
ANR project: For WATER Quality Monitoring – 4WATER
The water crisis is the #1 global risk based on impact to society as announced by the World Economic Forum in January 2015 [1]. Indeed, groundwater is a scarce resource as it only account for 0.3% of the Earth's total freshwater reserves. And already, 663 million people - 1 in 10 - lack access to safe water and 2.4 billion people - 1 in 3 - lack access to adequate sanitation (including 1/3 of all schools)[2,3] which has been shown to strongly impact local water quality and population’s health [4] Even when safe water is accessible, there can be great variability in its composition depending on many environmental and human factors [5], which can sporadically render it unsafe. Despite this, little is known of this variabilities and interplays because no global and permanent monitoring of these freshwater resources. Hence the objective of this proposalto develop a new low cost, multi-analyte water quality monitoring solution.
See a video description of the project.
- World Economic Forum. (2015). Global Risks 2015 Report.
- World Health Organization and UNICEF Joint Monitoring Programme (JMP). (2015) Progress on Drinking Water and Sanitation, 2015 Update and MDG Assessment.
- United States Census Bureau Estimates. (2015). United States and World Population Clock.
- Contribution of Water Pollution From Inadequate Sanitation and Housing Quality to Diarrheal Disease in Low-Cost Housing Settlements of Cape Town, South Africa. Thashlin Govender, Jo M. Barnes, Clarissa H. Pieper, Am J Public Health. 2011 July; 101(7): e4–e9.
- Spatial and Seasonal Variability in the Water Quality Characteristics of an Ephemeral Wetland. Chad J. Boeckman and Joseph R. Bidwell Proc. Okla. Acad. Sci. 87: pp 45-54 (2007)
