Fig. 3: Variations of librational frequencies.
From: Nanoscale feedback control of six degrees of freedom of a near-sphere
a Calculated librational frequencies with respect to the radius along the y-axis q/p. The radius r is set to 0.9914p. The librational frequencies are sensitive to the geometry of the trapped nanoparticle. b Measured frequency variation of flx as a function of the PSD area. The solid line is a fit with Eq.(1). The librational frequency varies with the temperature of the librational motion, which is proportional to the area of the PSD. See Supplementary Fig. 3 for fly and flz. For this measurement, other librational motions are feedback-cooled in advance to minimize the correlation effect. c PSD near flx for three temperature values. d PSD near flz for three temperature values. e PSD near fly for three temperature values. The lowest temperatures are lower than 0.03 K for any direction.
