Digital holographic microscopy for 3D surface characterization of polymeric nanocomposites

•Digital holographic microscopy (DHM) is introduced for polymeric nanocomposites.•Microsphere-assisted Mirao DHM arrangement is used for super-resolved holograms.•Surface roughness parameters indicate presence of nanoparticles. [Display omitted] The aim of this paper is to introduce digital holograp...

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Bibliographic Details
Published in:Ultramicroscopy 2018-02, Vol.185, p.72-80
Main Authors: Abbasian, Vahid, Akhlaghi, Ehsan A., Charsooghi, Mohammad A., Bazzar, Maasoomeh, Moradi, Ali-Reza
Format: Article
Language:English
Subjects:
Digital holographic microscopy
Polymeric nanocomposites
Surface characterization
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Summary:•Digital holographic microscopy (DHM) is introduced for polymeric nanocomposites.•Microsphere-assisted Mirao DHM arrangement is used for super-resolved holograms.•Surface roughness parameters indicate presence of nanoparticles. [Display omitted] The aim of this paper is to introduce digital holographic microscopy (DHM) as a non-contact, inexpensive, and non-abrasive method for 3D surface characterization of polymeric nanocomposites. A common-path and vibration-immune Mirau system with a microsphere-assisted arrangement is utilized to increase the lateral resolution of the images. The characterization is performed through the measurement of roughness parameters of the surfaces, which are derived from the recorded holograms. Pure poly(triazole-amide-imide) (PTAI) and PTAI nanocomposite reinforeced with surface modified TiO2 nanoparticles (MN-TiO2) are used and compared. The experimental results show the potential of the presented method to serve as an alternative for expensive surface measurement devices such as stylus profiler and atomic force microscope (AFM) for polymeric surface characterization.
ISSN:0304-3991
1879-2723
DOI:10.1016/j.ultramic.2017.11.013