Optical tweezers: from space to the nanoscale… and back
Giovedì 28 ottobre 2021, ore 17:00
Modalità mista: Aula Magna Villa San Saverio e Piattaforma Microsoft Teams: Fai clic qui per partecipare alla riunione
Classe delle Scienze Sperimentali
Relatore: Dott. Onofrio M. Maragò
Istituto per i Processi Chimico Fisici, Consiglio Nazionale delle Ricerche, Messina
ABSTRACT: Optical tweezers are powerful tools based on focused laser beams. They are able to trap, manipulate and investigate a wide range of nanoscopic particles in different media, such as liquids, air, and vacuum. After an introduction to optical forces, we will give an overview of results on optical trapping, optical binding, and characterization of particles at the nanoscale. Thus, we will describe how optical tweezers can be used to trap and characterize extraterrestrial particulate matter. Our results open perspectives for non-destructive, non-contact and non-contaminating investigation of extraterrestrial particles, aiming for space tweezers applications. We acknowledge financial contribution from the agreement ASI-INAF n. 2018-16-HH.0, project “SPACE Tweezers” and the MSCA ITN (ETN) project “Active Matter”.
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