Imaging the Composition of Oxide−Glass Surfaces by Friction Atomic Force Microscopy

Langmuir ◽  
2003 ◽  
Vol 19 (17) ◽  
pp. 6570-6572 ◽  
Author(s):  
Nathalie Destouches ◽  
Marie Foret ◽  
Eric Courtens ◽  
Michel Ramonda
Keyword(s):  
Atomic Force Microscopy ◽  
Oxide Glass ◽  
Force Microscopy ◽  
Atomic Force ◽  
Glass Surfaces

scholarly journals Atomic force microscopy of the morphology and mechanical behaviour of barnacle cyprid footprint proteins at the nanoscale

2009 ◽  
Vol 7 (43) ◽  
pp. 285-296 ◽  
Author(s):  
In Yee Phang ◽  
Nick Aldred ◽  
Xing Yi Ling ◽  
Jurriaan Huskens ◽  
Anthony S. Clare ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Sea Water ◽  
Persistence Length ◽  
Force Microscopy ◽  
Bond Model ◽  
Atomic Force ◽  
Extension Force ◽  
Force Curves ◽  
High Elongation ◽  
Glass Surfaces

Barnacles are a major biofouler of man-made underwater structures. Prior to settlement, cypris larvae explore surfaces by reversible attachment effected by a ‘temporary adhesive’. During this exploratory behaviour, cyprids deposit proteinaceous ‘footprints’ of a putatively adhesive material. In this study, footprints deposited by Balanus amphitrite cyprids were probed by atomic force microscopy (AFM) in artificial sea water (ASW) on silane-modified glass surfaces. AFM images obtained in air yielded better resolution than in ASW and revealed the fibrillar nature of the secretion, suggesting that the deposits were composed of single proteinaceous nanofibrils, or bundles of fibrils. The force curves generated in pull-off force experiments in sea water consisted of regions of gradually increasing force, separated by sharp drops in extension force manifesting a characteristic saw-tooth appearance. Following the relaxation of fibrils stretched to high strains, force–distance curves in reverse stretching experiments could be described by the entropic elasticity model of a polymer chain. When subjected to relaxation exceeding 500 ms, extended footprint proteins refolded, and again showed saw-tooth unfolding peaks in subsequent force cycles. Observed rupture and hysteresis behaviour were explained by the ‘sacrificial bond’ model. Longer durations of relaxation (>5 s) allowed more sacrificial bond reformation and contributed to enhanced energy dissipation (higher toughness). The persistence length for the protein chains ( L P ) was obtained. At high elongation, following repeated stretching up to increasing upper strain limits, footprint proteins detached at total stretched length of 10 µm.

scholarly journals Etched glass surfaces, atomic force microscopy and stochastic analysis

2007 ◽  
Vol 375 (1) ◽  
pp. 239-246 ◽  
Author(s):  
G.R. Jafari ◽  
M. Reza Rahimi Tabar ◽  
A. Iraji zad ◽  
G. Kavei
Keyword(s):  
Atomic Force Microscopy ◽  
Stochastic Analysis ◽  
Force Microscopy ◽  
Atomic Force ◽  
Glass Surfaces

Structural Characterization of Self-Assembled Polypeptide Films on Titanium and Glass Surfaces by Atomic Force Microscopy

2005 ◽  
Vol 6 (6) ◽  
pp. 3345-3350 ◽  
Author(s):  
István Pelsöczi ◽  
Kinga Turzó ◽  
Csilla Gergely ◽  
András Fazekas ◽  
Imre Dékány ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Structural Characterization ◽  
Force Microscopy ◽  
Atomic Force ◽  
Self Assembled ◽  
Glass Surfaces

scholarly journals Deposition and characterization of Cu4SnS4 thin films by chemical bath deposition method

2010 ◽  
Vol 29 (1) ◽  
pp. 97 ◽  
Author(s):  
Anuar Kassim ◽  
Tan Wee Tee ◽  
Abdul Halim Abdullah ◽  
Saravanan Nagalingam ◽  
Ho Soon Min
Keyword(s):  
Thin Films ◽  
Atomic Force Microscopy ◽  
Chemical Bath Deposition ◽  
Chemical Bath Deposition Method ◽  
Oxide Glass ◽  
Deposition Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force

A low cost chemical bath deposition method has been used for the preparation of Cu4SnS4 thin films onto indium tin oxide glass substrate. The deposition parameters such as bath temperature (50 °C), deposition time (120 min), electrolyte concentration (0.05 M) and bath pH (1.5) were optimized to obtain good quality thin films. The structural, surface morphological and optical properties of thin films were studied by X-ray diffraction, an atomic force microscopy and an UV-Vis Spectrophotometer, respectively. The X-ray diffraction study revealed that the Cu4SnS4 films were polycrystalline in nature with the preferential orientation along the (221) plane. The atomic force microscopy results indicated that the films were smooth, uniform and the substrate surface was covered completely at these experimental conditions. These films exhibited p-type semiconductor behavior with the band gap energy about 1.57 eV.

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