@inproceedings{db131ff55c2342f0b6f772108d7d3b87,
title = "Linear and nonlinear laser-trapping microrheology",
abstract = "We have developed a high-bandwidth technique for active 2-particle microrheology (AMR) with which we can probe linear and nonlinear responses of soft materials. Micron-sized colloidal probe particles are driven by an oscillating optical trap, and the resulting correlated motions of neighboring particles are detected by laser interferometry. Lock-in detection at the driving frequency and at its second harmonic makes it possible to measure the linear and the non-linear response of the embedding medium at the same time. We demonstrate the sensitivity of the method by detecting a second-harmonic response in water which is of purely geometric origin and which can be fully understood within linear hydrodynamics.",
author = "Schmidt, {C. F.} and D. Mizuno",
year = "2007",
month = dec,
day = "1",
doi = "10.1117/12.739441",
language = "English",
isbn = "9780819467928",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Optical Trapping and Optical Micromanipulation IV",
note = "Optical Trapping and Optical Micromanipulation IV ; Conference date: 26-08-2007 Through 29-08-2007",
}