Addition/Correction Cite This: Macromolecules XXXX, XXX, XXX−XXX
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Correction to Contact Resonance Force Microscopy for Viscoelastic Property Measurements: From Fundamentals to State-of-the-Art Applications Jason P. Killgore* and Frank W. DelRio*
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Macromolecules 2018, 51 (18), 6977−6996. DOI: 10.1021/acs.macromol.8b01178
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In the original paper,1 the authors erroneously took the wrong figure from the cited paper2 to generate Figure 8a. The figure was intended to compare acoustic excitation to magnetic excitation in liquid and illustrate that magnetic excitation resulted in a more Lorentzian peak shape with a well-defined frequency and quality factor that shifted when the tip−sample contact stiffness was varied (as opposed to the original version, which mistakenly showed acoustic excitation data for both the first and second eigenmodes). The new figure and caption for Figure 8 are shown below.
REFERENCES
(1) Killgore, J. P.; DelRio, F. W. Contact Resonance Force Microscopy for Viscoelastic Property Measurements: From Fundamentals to State-of-the-Art Applications. Macromolecules 2018, 51 (18), 6977−6996. (2) Parlak, Z.; Tu, Q.; Zauscher, S. Liquid contact resonance AFM: analytical models, experiments, and limitations. Nanotechnology 2014, 25 (44), 445703.
Figure 8. Cantilever excitation methods for viscoelastic CRFM in liquid environments. (a) Experimental and simulated contact resonance frequency spectra for a cantilever actuated via piezoacoustic (left) and magnetic (right) excitation (first eigenmode). The magnetically driven excitation was achieved via a neodymium particle adhered to the backside of the cantilever and driven by a solenoid. Reproduced with permission from ref 119. Copyright 2014 IOP Publishing. (b) Experimental free and contact frequency spectra for a cantilever actuated via the Brownian motion of the surrounding fluid. The peaks at 100 and 125 kHz are artifacts of the instrument controller, whereas the peaks at 10 kHz are noise. Reproduced with permission from ref 71. Copyright 2014 American Institute of Physics. (c) Experimental contact resonance frequency spectra for a cantilever actuated via piezoacoustic and photothermal excitation; the piezoacoustic signal exhibited multiple peaks, while the photothermal signal showed a clean peak at 124.1 kHz with a quality factor of 8.1. Reproduced with permission from ref 120. Copyright 2015 American Institute of Physics.
© XXXX American Chemical Society
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DOI: 10.1021/acs.macromol.8b02072 Macromolecules XXXX, XXX, XXX−XXX
