Dry launching of silica nanoparticles in vacuum

Autor(en)

Ayub Khodaee, Kahan Dare, Aisling Johnson, Uroš Delić, Markus Aspelmeyer

Abstrakt

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.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW)

Journal

AIP Advances

Band

12

Anzahl der Seiten

5

ISSN

2158-3226

DOI

https://doi.org/10.1063/5.0124029

Publikationsdatum

12-2022

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a8490e54-6ce4-4c32-b280-6585ea7dad8f