[Seminar] All in a spin: rotational dynamics of trapped, levitated microparticles
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Date
Location
Description
Title: All in a spin: rotational dynamics of trapped, levitated microparticles
Speaker: Prof Kishan Dholakia
School of Physics & Astronomy, University of St Andrews, Scotland
Abstract:
Trapping microparticles in vacuum has led to the burgeoning area of levitated optomechanics. Here we will describe recent work on rotating particles in vacuum. This offers a rich playground for dynamics. In particular we describe how we can attain very high rotation rates by spin angular momentum transfer and observe optical binding of particles in vacuum. For a single particle in vacuum stochastic, thermal fluctuations combine with nonconservative optical forces to break detailed balance and produce increasingly coherent, apparently deterministic motion. In turn this leads to the highest Q value ever reported for a vacuum traded microparticle opening up new studies of sensors.
Meeting URL: https://oist.zoom.us/j/96737459676?pwd=RDBoRm1Cb3R0TmVaMXR5bUptbEJiUT09&from=addon
Meeting ID: 967 3745 9676
Passcode: 543450
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