Lateral resolution of electrostatic force microscopy for mapping of dielectric interfaces in ambient conditions
Article dans une revue avec comité de lecture
Author
Abstract
The attainable lateral resolution of electrostatic force microscopy (EFM) in an ambient air environment on dielectric materials was characterized on a reference sample comprised of two distinct, immiscible glassy polymers cut in a cross-section by ultramicrotomy. Such a sample can be modeled as two semi-infinite dielectrics with a sharp interface, presenting a quasi-ideal, sharp dielectric contrast. Electric polarizability line profiles across the interface were obtained, in both lift-mode and feedback-regulated dynamic mode EFM, as a function of probe/surface separation, for different cases of oscillation amplitudes. We find that the results do not match predictions for dielectric samples, but comply well or are even better than predicted for conductive interfaces. A resolution down to 3 nm can be obtained by operating in feedback-regulated EFM realized by adopting constant-excitation frequency-modulation mode. This suggests resolution is ruled by the closest approach distance rather than by average separation, even with probe oscillation amplitudes as high as 10 nm. For better comparison with theoretical predictions, effective probe radii and cone aperture angles were derived from approach curves, by also taking into account the finite oscillation amplitude of the probe, by exploiting a data reduction procedure previously devised for the derivation of interatomic potentials.
Files in this item
- Name:
- PIMM_N_2020_ SOLLOGOUB.pdf
- Size:
- 1.582Mb
- Format:
- Description:
- Article
- Embargoed until:
- 2021-12-08
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureRUELLAN, Alexandre; DUCRUET, Violette J.; GRATIA, Audrey; SAELICES JIMENEZ, Lidia; GUINAULT, Alain; SOLLOGOUB, Cyrille; CHOLLET, Guillaume; DOMENEK, Sandra (Wiley, 2016)A used-as-shipped biobased and biodegradable by-product of the palm oil refining increases polylactide (PLA) elongation at break up to 130% and allows film blowing without further additives. PLA blends are biodegradable ...
-
Article dans une revue avec comité de lectureLOZAY, Quentin; BEUGUEL, Quentin; FOLLAIN, Nadège; LEBRUN, Laurent; GUINAULT, Alain; MIQUELARD-GARNIER, Guillaume; TENCÉ-GIRAULT, Sylvie; SOLLOGOUB, Cyrille; DARGENT, Eric; MARAIS, Stéphane (MDPI, 2021)The barrier performance and structural lightening of organic materials are increasingly desired and constitute a major challenge for manufacturers, particularly for transport and packaging. A promising technique which tends ...
-
Article dans une revue avec comité de lectureRUELLAN, Alexandre; GUINAULT, Alain; SOLLOGOUB, Cyrille; DUCRUET, Violette; DOMENEK, Sandra (Wiley, 2015)Changes in the thermomechanical properties of polylactide (PLA) plasticized by two biodegradable and biobased molecules, Polysorb ID37 (PID37) and squalene, were compared to formulations with petroleum-based plasticizers, ...
-
Article dans une revue avec comité de lectureFENG, Jingxing; BAER, Eric; OLAH, Andrew; SOLLOGOUB, Cyrille; MIQUELARD-GARNIER, Guillaume; GUINAULT, Alain; BIRONEAU, Adrien; ZHANG, Ziyou (Elsevier, 2018)Multilayer films comprising polystyrene (PS)/polymethyl methalcrylate (PMMA) and PS/polycaprolatone (PCL) alternating nanolayers with varied layer thickness were fabricated by multilayer coextrusion. The nanolayers breakup ...
-
Article dans une revue avec comité de lectureROLAND, Sébastien; MIQUELARD-GARNIER, Guillaume; GERVAIS, Matthieu; GUINAULT, Alain; SOLLOGOUB, , Cyrille (Elsevier, 2016)We report the making of multilayered self-assembled films by coextrusion, composed of alternated layers of confining polycarbonate and confined poly(styrene-. b-butadiene-. b-methyl methacrylate), whose blocks are chemically ...