2020/05/24 by Thomas Dixon, Dixon, Thomas, Peter J. Reece +1
Physics and Astronomy · #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Optics (physics.optics) #Orbital Angular Momentum in Optics #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.2005.12268
openalex publication_date 2020/05/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Time-division multiplexing presents an attractive opportunity to probe\nmulti-colloidal interactions in optical traps at short time-scales. In this\npaper, we demonstrate a stroboscopic system capable of arbitrary control of\nmultiple trapped colloids with sensing at kHz rates and validate it using\nseveral simple multi-colloidal experiments. We expect this methodology will be\nof benefit in the study of group colloidal hydrodynamics and systems of active\ncolloids, particularly where a temporal sensitivity beyond that of camera-based\nposition sensing is required. In addition, our multiplexing enables calibration\nthat is robust to environmental anomalies, shape distortions of colloids and\nscattering interference from other particles.\n