Titel
Dry launching of silica nanoparticles in vacuum
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Abstract
Clean loading of silica nanoparticles with a radius as small as ∼50 nm is required for experiments in levitated optomechanics that operate in ultra-high vacuum. We present a cheap and simple experimental method for dry launching of silica nanoparticles by shaking from a polytetrafluoroethylene surface (PTFE). We report on the successful launching of single silica nanoparticles with a minimum radius of 43 nm, which is enabled by the low stiction to the launching surface. Nanoparticles with radii of 43 and 71.5 nm are launched with a high flux and small spread. The measured velocities are significantly smaller than 1 m/s. The demonstrated launching method allows for controlled loading of dry nanoparticles with radii as small as 43 nm into optical traps in (ultra-)high vacuum, although we anticipate that loading of smaller sizes is equally feasible.
Stichwort
Ultra-high vacuumScanning electron microscopyNanoparticleOptical tweezersOptomechanicsOptical trappingOptical levitationVan der Waals forces
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:1678180
Erschienen in
Titel
AIP Advances
Band
12
Ausgabe
12
ISSN
2158-3226
Erscheinungsdatum
2022
Verlag
AIP Publishing
Projektnummer
QLev4G – European Union (all programmes)
Projektnummer
Synergy QXtreme – European Union (all programmes)
Projektnummer
I 5111-N – Austrian Science Fund (FWF)
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Erscheinungsdatum
2022
Zugänglichkeit
Rechteangabe
© 2022 Author(s)

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