Dip-and-drag lateral force spectroscopy for measuring adhesive forces between nanofibers

Dolan, Grace K., Yakubov, Gleb E., Greene, George W., Amiralian, Nasim, Annamalai, Pratheep K., Martin, Darren J. and Stokes, Jason R. 2016, Dip-and-drag lateral force spectroscopy for measuring adhesive forces between nanofibers, Langmuir, vol. 32, no. 50, pp. 13340-13348, doi: 10.1021/acs.langmuir.6b03467.

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Title Dip-and-drag lateral force spectroscopy for measuring adhesive forces between nanofibers
Author(s) Dolan, Grace K.
Yakubov, Gleb E.
Greene, George W.ORCID iD for Greene, George W. orcid.org/0000-0003-2250-8334
Amiralian, Nasim
Annamalai, Pratheep K.
Martin, Darren J.
Stokes, Jason R.
Journal name Langmuir
Volume number 32
Issue number 50
Start page 13340
End page 13348
Total pages 9
Publisher ACS Publications
Place of publication Washington, D. C.
Publication date 2016-12
ISSN 1520-5827
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Materials Science
Summary Adhesive interactions between nanofibers strongly influence the mechanical behavior of soft materials composed of fibrous networks. We use atomic force microscopy in lateral force mode to drag a cantilever tip through fibrous networks, and use the measured lateral force response to determine the adhesive forces between fibers of the order of 100 nm diameter. The peaks in lateral force curves are directly related to the detachment energy between two fibers; the data is analyzed using the Jarzynski equality to yield the average adhesion energy of the weakest links. The method is successfully used to measure adhesion forces arising from van der Waals interactions between electrospun polymer fibers in networks of varying density. This approach overcomes the need to isolate and handle individual fibers, and can be readily employed in the design and evaluation of advanced materials and biomaterials which, through inspiration from nature, are increasingly incorporating nanofibers. The data obtained with this technique may also be of critical importance in the development of network models capable of predicting the mechanics of fibrous materials.
Language eng
DOI 10.1021/acs.langmuir.6b03467
Field of Research 020406 Surfaces and Structural Properties of Condensed Matter
030603 Colloid and Surface Chemistry
091209 Polymers and Plastics
099999 Engineering not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30090356

Document type: Journal Article
Collections: Institute for Frontier Materials
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