Micro-rheology on (polymer-grafted) colloids using optical tweezers

C. Gutsche; M. M. Elmahdy; K. Kegler; I. Semenov; T. Stangner; O. Otto; O. Ueberschär; U. F. Keyser; M. Krueger; M. Rauscher; R. Weeber; J. Harting; Y. W. Kim; V. Lobaskin; R. R. Netz; F. Kremer

doi:10.1088/0953-8984/23/18/184114

Micro-rheology on (polymer-grafted) colloids using optical tweezers

C. Gutsche, M. M. Elmahdy, K. Kegler, I. Semenov, T. Stangner, O. Otto, O. Ueberschär, U. F. Keyser, M. Krueger, M. Rauscher, R. Weeber, J. Harting, Y. W. Kim, V. Lobaskin, R. R. Netz, F. Kremer

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21 Scopus citations

Abstract

Optical tweezers are experimental tools with extraordinary resolution in positioning ( 1nm) a micron-sized colloid and in the measurement of forces ( 50fN) acting on it - without any mechanical contact. This enables one to carry out a multitude of novel experiments in nano-and microfluidics, of which the following will be presented in this review: (i)forces within single pairs of colloids in media of varying concentration and valency of the surrounding ionic solution, (ii) measurements of the electrophoretic mobility of single colloids in different solvents (concentration, valency of the ionic solution and pH), (iii) similar experiments as in (i)with DNA-grafted colloids, (iv) the nonlinear response of single DNA-grafted colloids in shear flow and (v) the drag force on single colloids pulled through a polymer solution. The experiments will be described in detail and their analysis discussed.

Original language	English
Article number	184114
Journal	Journal of Physics Condensed Matter
Volume	23
Issue number	18
DOIs	https://doi.org/10.1088/0953-8984/23/18/184114
State	Published - 11 May 2011
Externally published	Yes

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Gutsche, C., Elmahdy, M. M., Kegler, K., Semenov, I., Stangner, T., Otto, O., Ueberschär, O., Keyser, U. F., Krueger, M., Rauscher, M., Weeber, R., Harting, J., Kim, Y. W., Lobaskin, V., Netz, R. R., & Kremer, F. (2011). Micro-rheology on (polymer-grafted) colloids using optical tweezers. Journal of Physics Condensed Matter, 23(18), Article 184114. https://doi.org/10.1088/0953-8984/23/18/184114

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title = "Micro-rheology on (polymer-grafted) colloids using optical tweezers",

abstract = "Optical tweezers are experimental tools with extraordinary resolution in positioning ( 1nm) a micron-sized colloid and in the measurement of forces ( 50fN) acting on it - without any mechanical contact. This enables one to carry out a multitude of novel experiments in nano-and microfluidics, of which the following will be presented in this review: (i)forces within single pairs of colloids in media of varying concentration and valency of the surrounding ionic solution, (ii) measurements of the electrophoretic mobility of single colloids in different solvents (concentration, valency of the ionic solution and pH), (iii) similar experiments as in (i)with DNA-grafted colloids, (iv) the nonlinear response of single DNA-grafted colloids in shear flow and (v) the drag force on single colloids pulled through a polymer solution. The experiments will be described in detail and their analysis discussed.",

author = "C. Gutsche and Elmahdy, \{M. M.\} and K. Kegler and I. Semenov and T. Stangner and O. Otto and O. Uebersch{\"a}r and Keyser, \{U. F.\} and M. Krueger and M. Rauscher and R. Weeber and J. Harting and Kim, \{Y. W.\} and V. Lobaskin and Netz, \{R. R.\} and F. Kremer",

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Gutsche, C, Elmahdy, MM, Kegler, K, Semenov, I, Stangner, T, Otto, O, Ueberschär, O, Keyser, UF, Krueger, M, Rauscher, M, Weeber, R, Harting, J, Kim, YW, Lobaskin, V, Netz, RR & Kremer, F 2011, 'Micro-rheology on (polymer-grafted) colloids using optical tweezers', Journal of Physics Condensed Matter, vol. 23, no. 18, 184114. https://doi.org/10.1088/0953-8984/23/18/184114

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AU - Elmahdy, M. M.

AU - Kegler, K.

AU - Semenov, I.

AU - Stangner, T.

AU - Otto, O.

AU - Ueberschär, O.

AU - Keyser, U. F.

AU - Krueger, M.

AU - Rauscher, M.

AU - Weeber, R.

AU - Harting, J.

AU - Kim, Y. W.

AU - Lobaskin, V.

AU - Netz, R. R.

AU - Kremer, F.

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Micro-rheology on (polymer-grafted) colloids using optical tweezers

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