10 Décembre – Nobel Prize in Physics 2018 : light tools
18 h30 Amphi Poincaré - building A22 Licence Sciences et Technologies (University of Bordeaux / Talence)
On Alfred Nobel's birthday, a free public lecture by Yann Louyer
(Laboratoire Ondes et Matière d'Aquitaine - University of Bordeaux)
Yann Louyer will present the inventions of Arthur Ashkin that revolutionized the physics of lasers and were honored this year by half the Nobel Prize in Physics. Extremely small objects are now seen in a different light thanks to these advanced precision instruments. They have opened new areas of research and led to a multitude of industrial and medical applications. Arthur Ashkin invented optical tweezers that capture particles, atoms, viruses and other living cells with their fingers of laser light. This new tool allowed Ashkin to realize an old sci-fi dream: to use the light radiation pressure to move physical objects. The invention of the optical clamp makes it possible to push small particles towards the center of the laser beam and to keep them there.
A major breakthrough came in 1987, when Ashkin used the optical forceps to capture live bacteria without hurting them. He immediately began to study biological systems and optical tongs are now widely used to study the mechanisms of life.
Organization : Université de Bordeaux et section aquitaine de la Société Française de Physique
Tram B - station Béthanie