Publications by authors named "S Sauvage"
Ultrafast Electron Dynamics in Coupled and Uncoupled HgTe Quantum Dots.
J Phys Chem Lett
December 2024
In this article, we study electron dynamics in HgTe quantum dots with a 1.9 μm gap, a material relevant for infrared sensing and emission, using ultrafast spectroscopy with 35 fs time resolution. Experiments have been carried out at several probing photon energies around the gap, which allows us to follow the relaxation path of the photoexcited electrons.
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Article Synopsis
- Head and neck squamous cell carcinoma (HNSCC) shows significant genetic diversity within tumors, complicating targeted treatment approaches and making traditional imaging ineffective for detecting minimal residual disease (MRD).
- A study of 41 patients with resectable HNSCC found that circulating tumor DNA (ctDNA) can serve as a biomarker for assessing tumor heterogeneity and MRD, with notable detection rates at surgery and recurrence.
- The presence of ctDNA shortly after surgery correlated with disease recurrence, providing an early warning about potential relapse, thus supporting its role in post-operative monitoring and precision medicine strategies.
Article Synopsis
- This study analyzed the organic components of fine particulate matter collected in urban Cairo over two months, highlighting the area's severe pollution levels.
- Key findings included significant contributions from cooking (31%) and biomass burning (18%), with newly identified pollutants such as phthalates linked to open waste burning.
- The research used advanced methods to determine the sources of organic carbon and assessed the associated uncertainties, providing insights into urban air quality and pollution sources in one of the world's most polluted cities.
Pesticides are a major source of pollution for ecosystems. In agricultural catchments, ponds serve as buffer areas for pesticide transfers and biogeochemical hotspots for pesticide dissipation. Some studies have highlighted the specific impact of ponds on the dynamics of pesticides, but knowledge of their cumulative effect at the watershed scale is scarce.
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