Nanoscale virtual potentials using optical tweezers
Kumar A, Bechhoefer J. Nanoscale virtual potentials using optical tweezers. Applied Physics Letters 2018, 113: 183702. DOI: 10.1063/1.5055580.Peer-Reviewed Original ResearchDouble-well potentialOptical tweezersOptical tweezers techniqueSpatial light modulatorAdjustable barrier heightOptical trapVirtual potentialFeedback trapLight modulatorTrap centersHarmonic potentialIsotropic trapDual beamBarrier heightParticle positionsArbitrary potentialTweezersColloidal particlesLength scalesTrapsWell separationParticlesBeamModulatorPotentialOptical feedback tweezers
Kumar A, Bechhoefer J. Optical feedback tweezers. 2018, 10723: 107232j. DOI: 10.1117/12.2323837.Peer-Reviewed Original ResearchFeedback trapOptical trapAcoustooptic deflectorTime-shared optical tweezersDouble-well potentialVirtual potentialOptical tweezersLaser powerPosition detectorTrap positionBarrier heightParticle positionsArbitrary potentialTweezersObserved fluctuationsTrapsParticlesWell separationIndependent controlDeflectorLoop rateDetectorPreliminary experimentsHydrodynamic forcesFeedback force