It is found that an electric field applied parallel to a substrate surface influences the adsorption of positively charged core–shell microcapsules on glass substrates. As a result, the amount of microcapsules adsorbed near negative contact is up to 2 times larger than the one absorbed near positive contact. It is also found that small concentration (less than 0.2 M) of salt in microcapsule suspension decreases this effect, while an increase in the concentration to 0.45 M results in enhancement of the effect.
The photostimulated adsorption of glucose oxidase (GOx) on the surface of single-crystalline Si wafers with an amorphous silicon (a-Si) layer was examined. Estimation of the difference between the surface coverage by GOx molecules deposited under illumination and in the dark showed that this value increased for the structures with a-Si layer by a factor of 2.5 in the case of n -Si and by a factor of 1.5 in the case of p -Si. It is revealed that the n -Si/a-Si structures can be used for preliminary photostimulation of the GOx adsorption process.
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