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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.
Original language | English |
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Article number | 125023 |
Number of pages | 5 |
Journal | AIP Advances |
Volume | 12 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1 Dec 2022 |
Austrian Fields of Science 2012
- 103026 Quantum optics
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IQLev: Inertial Sensing Based on Quantum-Enhanced Levitation Systems
Aspelmeyer, M. & Kiesel, T. N.
1/01/20 → 30/06/23
Project: Research funding