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Schematic illustration of the step wise surface modification of ITO glass plate with functionalized gold nanoparticles and immobilization of BSA.
Optical micrographs showing the configuration changes caused by different concentrations of BSA.
Variation of contact angle subtended by water on untreated and BSA treated ITO substrates with concentration of BSA. Inset of the figure shows the microscopic images for different BSA concentrations of (a) 0 μg/ml, (b) 0.2 μg/ml, (c) 0.5 μg/ml, (d) 1.0 μg/ml, (e) 5 μg/ml, (f) 10 μg/ml and (g) 100 μg/ml recorded during the contact angle measurements.
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