AFM Imaging of Surfactant Micelles

July 1, 2009 — By Hannes C. Schniepp
 
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We imaged the dynamic self-assembly of surfactant micelles at the solid–liquid interface with our new NTEGRA microscope for the first time:

2009-07-01_surfactant_micelles.jpg

Each of the diagonal lines shown in the image has a diameter of about 5 nm only and represents a hemi-cylindrical micelle comprised of CTAB surfactant molecules (cetyltrimethylammonium bromide). The vertical topography modulations have an amplitude of about 2 Å only (0.2 nm). Nevertheless, the image features a comparatively much lower noise level.

The experiment was carried out in a liquid cell on a HOPG (graphite) substrate.

[27] Biomacromolecules (2015) — Koebley, Greving, Vollrath & Schniepp*
"Silk Reconstitution Disrupts Fibroin Self-Assembly"
thum_rsf-model.jpg
[22] J. Phys. Chem. C (2012) — Glover, Adamson & Schniepp*
"Charge-Driven Selective Adsorption of Sodium Dodecyl Sulfate on Graphene Oxide Visualized by Atomic Force Microscopy"
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[21] Nano LIFE (2012) — Li, Schniepp, Aksay & Car
"Phonon-Induced Anisotropic Dispersion Forces On A Metallic Substrate"
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[19] Biomacromolecules (2012) — Greving, Cai, Vollrath & Schniepp*
"Shear-Induced Self-Assembly of Native Silk Proteins into Fibrils Studied by Atomic Force Microscopy"
thum_silk-sa.jpg
[12] Langmuir (2008) — Murira, Punckt, Schniepp, Khusid, & Aksay
"Inhibition and Promotion of Copper Corrosion by CTAB in a Microreactor System"
thum_corros.jpg
[11] J. Phys. Chem C (2008) — Schniepp, Shum, Saville & Aksay
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thum_orient.jpg
[9] Langmuir (2008) — Schniepp, Saville & Aksay
"Tip-Induced Orientational Order of Surfactant Micelles on Gold."
thum_shear.jpg
[6] J. Phys. Chem. B (2007) — Schniepp, Shum, Saville & Aksay
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thum_rough.jpg
[5] J. Am. Chem. Soc. (2006) — Schniepp, Saville & Aksay
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thum_fast.jpg
[3] Phys. Rev. Lett. (2006) — Saville, Chun, Li, Schniepp, Car & Aksay
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thum_saville.jpg
public/news/blog/2006-2009/2009-07-01_surfactant_micelles-afm.txt · Last modified: 2017/01/04 17:44 by schniepp