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Issue 42, 2018
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Reply to the ‘Comment on “A symmetrical method to obtain shear moduli from microrheology”’ by M. Tassieri, Soft Matter, 2018, 14, DOI: 10.1039/C8SM00806J

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Abstract

The Comment on our paper introducing “a symmetric method to obtain shear moduli from microrheology” proposes an interpolation method to generate oversampled data from an original time series that are then used to approximate shear moduli at frequencies “beyond the Nyquist frequency.” The author states that this can be done without the use of “preconceived fitting functions,” implying that the results are unique and reliable. We disagree with these assertions. While it is possible to generate reasonable looking transforms at frequencies above the Nyquist limit by interpolation, any results obtained above the Nyquist limit will be questionable at best. Moreover, while the cubic spline interpolation the author uses may be standard, it constitutes a particular “preconceived” fit and produces oversampled data that are not unique.

Graphical abstract: Reply to the ‘Comment on “A symmetrical method to obtain shear moduli from microrheology”’ by M. Tassieri, Soft Matter, 2018, 14, DOI: 10.1039/C8SM00806J

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Publication details

The article was received on 31 Aug 2018, accepted on 05 Oct 2018 and first published on 15 Oct 2018


Article type: Comment
DOI: 10.1039/C8SM01792A
Citation: Soft Matter, 2018,14, 8671-8672
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    Reply to the ‘Comment on “A symmetrical method to obtain shear moduli from microrheology”’ by M. Tassieri, Soft Matter, 2018, 14, DOI: 10.1039/C8SM00806J

    K. Nishi, M. L. Kilfoil, C. F. Schmidt and F. C. MacKintosh, Soft Matter, 2018, 14, 8671
    DOI: 10.1039/C8SM01792A

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