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Title: Nanoscale effects in the characterization of viscoelastic materials with atomic force microscopy: Coupling of a quasi-three-dimensional standard linear solid model with in-plane surface interactions

Journal Article · · Beilstein Journal of Nanotechnology
DOI:https://doi.org/10.3762/bjnano.7.49· OSTI ID:1262033
 [1]
  1. George Washington Univ., Washington, DC (United States)

Significant progress has been accomplished in the development of experimental contact-mode and dynamic-mode atomic force microscopy (AFM) methods designed to measure surface material properties. However, current methods are based on one-dimensional (1D) descriptions of the tip-sample interaction forces, thus neglecting the intricacies involved in the material behavior of complex samples (such as soft viscoelastic materials) as well as the differences in material response between the surface and the bulk. In order to begin to address this gap, a computational study is presented where the sample is simulated using an enhanced version of a recently introduced model that treats the surface as a collection of standard-linear-solid viscoelastic elements. The enhanced model introduces in-plane surface elastic forces that can be approximately related to a two-dimensional (2D) Young's modulus. Relevant cases are discussed for single-and multifrequency intermittent-contact AFM imaging, with focus on the calculated surface indentation profiles and tip-sample interaction force curves, as well as their implications with regards to experimental interpretation. A variety of phenomena are examined in detail, which highlight the need for further development of more physically accurate sample models that are specifically designed for AFM simulation. As a result, a multifrequency AFM simulation tool based on the above sample model is provided as supporting information.

Research Organization:
George Washington Univ., Washington, DC (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0011912
OSTI ID:
1262033
Journal Information:
Beilstein Journal of Nanotechnology, Vol. 7; ISSN 2190-4286
Publisher:
Beilstein InstituteCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (9)

Calculation of standard viscoelastic responses with multiple retardation times through analysis of static force spectroscopy AFM data journal March 2017
Transverse viscoelastic properties of pulp fibers investigated with an atomic force microscopy method journal May 2019
Theory of Single-Impact Atomic Force Spectroscopy in liquids with material contrast journal May 2018
Combining adhesive contact mechanics with a viscoelastic material model to probe local material properties by AFM journal January 2018
Determination of the viscoelastic properties of a single cell cultured on a rigid support by force microscopy journal January 2018
Fast, quantitative and high resolution mapping of viscoelastic properties with bimodal AFM journal January 2019
High-stress study of bioinspired multifunctional PEDOT:PSS/nanoclay nanocomposites using AFM, SEM and numerical simulation journal January 2017
Material property analytical relations for the case of an AFM probe tapping a viscoelastic surface containing multiple characteristic times journal January 2017
Å-Indentation for non-destructive elastic moduli measurements of supported ultra-hard ultra-thin films and nanostructures journal March 2019