{"id":77,"date":"2024-09-13T07:40:49","date_gmt":"2024-09-13T07:40:49","guid":{"rendered":"https:\/\/biblioconf.lpgp.universite-paris-saclay.fr\/wordpress\/?page_id=77"},"modified":"2024-11-26T10:10:36","modified_gmt":"2024-11-26T10:10:36","slug":"","status":"publish","type":"page","link":"https:\/\/www.lpgp-wp1.universite-paris-saclay.fr\/en\/direbio\/","title":{"rendered":"DIREBIO","raw":"DIREBIO"},"content":{"rendered":"\n

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DIREBIO<\/h1>\n<\/div><\/div>\n\n\n\n
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Presentation<\/h1>\n\n\n\n

DIREBIO works mainly on out-of-equilibrium electrical discharges (cold plasmas) at or near atmospheric pressure (0.1 – 10 bars) and their applications.<\/p>\n\n\n\n

The team develops new sources of cold plasmas (micro-discharges and \u201cplasma jets\u201d for bio-medicine and organic molecule conversion, nanosecond diffuse corona discharges for pollution control and combustion triggering, etc.), and carries out its work in collaboration with researchers from other disciplines, in France and abroad (Biology: interaction of active species with living organisms, oncology – Physical Chemistry: characterization of complex gas mixtures by mass spectrometry – Process Engineering: treatment of gaseous pollutants – Solid State Physics: new materials for electronics).<\/p>\n\n\n\n

DIREBIO is made up of experimentalists, using homogeneous discharge models and developing numerical tools to help interpret experiments. The team collaborates with teams of modelers to decipher the most complex physico-chemical phenomena.<\/p>\n\n\n\n

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Fundamental objectives and applications<\/h1>\n\n\n\n

The formation of the team dates back to the end of the 1980s when the LPGP became involved in the study of high-power excimer lasers, in particular XeCl (308 nm), under the responsibility of Vincent PUECH, founder of the team and scientific manager until 2008.<\/p>\n\n\n\n

Researches were then gradually extended to high power switching (pseudo-sparks), depollution of gaseous effluents (de-NOx and de-VOCs), HF\/DF lasers (3-4 \u00b5m), treatment of metallic surfaces (cleaning and deposition of thin layers), then the triggering of combustion, the decontamination of surfaces by VUV photons, the biological applications of plasmas (bio-medicine), and more recently the detection or conversion\/synthesis of organic molecules, the conception of new materials, in collaboration with academic partners in the frame of projects financed by major French agencies (ANR, ADEME, etc.) and national research programs (Plan Cancer, etc.), the district R\u00e9gion Ile-de-France<\/em> (Diagplas<\/em> platform), the CNRS and two thematic scientific groups Labex<\/em> of Paris-Saclay University. The team was under the responsibility of St\u00e9phane PASQUIERS from 2009 to 2023, and its activities are now coordinated by Joao SANTOS SOUSA.<\/p>\n\n\n\n

The physics of rapid pulsed electrical discharges (ns – \u00b5s) and the kinetics of plasmas generated by these discharges constitute the basis of the activities of the DIREBIO team: energy deposition in plasmas (in space and time), production and transport of active species, correlation between energy deposition and production of species, reactivity in the gas phase, etc. The team is interested in the physics of these discharges and the kinetics of plasmas produced in gases and mixtures of very varied gases (rare gases and molecular gases).<\/p>\n\n\n\n

The discharges studied and developed, or implemented for specific applications, are of different types: micro-discharges, dielectric barrier discharges for \u201cplasma jets” or other reactive species sources, diffuse nanosecond corona discharges, etc. Of an older design, a pre-ionized (photo-triggered) discharge is used for detailed studies of molecular kinetics in gas mixtures.<\/p>\n\n\n\n

In recent years, and currently, the team’s main research topics are:<\/p>\n\n\n\n