Linear and nonlinear laser-trapping microrheology
Publication
, Conference
Schmidt, CF; Mizuno, D
Published in: Proceedings of SPIE - The International Society for Optical Engineering
December 1, 2007
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.
Duke Scholars
Published In
Proceedings of SPIE - The International Society for Optical Engineering
DOI
ISSN
0277-786X
ISBN
9780819467928
Publication Date
December 1, 2007
Volume
6644
Citation
APA
Chicago
ICMJE
MLA
NLM
Schmidt, C. F., & Mizuno, D. (2007). Linear and nonlinear laser-trapping microrheology. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6644). https://doi.org/10.1117/12.739441
Schmidt, C. F., and D. Mizuno. “Linear and nonlinear laser-trapping microrheology.” In Proceedings of SPIE - The International Society for Optical Engineering, Vol. 6644, 2007. https://doi.org/10.1117/12.739441.
Schmidt CF, Mizuno D. Linear and nonlinear laser-trapping microrheology. In: Proceedings of SPIE - The International Society for Optical Engineering. 2007.
Schmidt, C. F., and D. Mizuno. “Linear and nonlinear laser-trapping microrheology.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 6644, 2007. Scopus, doi:10.1117/12.739441.
Schmidt CF, Mizuno D. Linear and nonlinear laser-trapping microrheology. Proceedings of SPIE - The International Society for Optical Engineering. 2007.
Published In
Proceedings of SPIE - The International Society for Optical Engineering
DOI
ISSN
0277-786X
ISBN
9780819467928
Publication Date
December 1, 2007
Volume
6644