Molecular water accumulation on silica measured by land-contrast interferometry with picometer height resolution

Details Molecular water accumulation on silica measured by land-contrast interferometry with picometer height resolution Molecular water accumulation on silica measured by land-contrast interferometry with picometer height resolution

2009-08-04

arxiv.org/abs/0908.0550v1

Physics

Optics

Scientific paper

We observed water film accumulation on silica surfaces in the air to 2 picometer resolution using optical land-contrast (LC) interferometry. The land-contrast approach is non-destructive and allows real-time measurement of thickness variation of small molecular films on a surface. Water accumulation rates are observed to be different on bare or protein monolayer coated silica surfaces. This suggests that water contributes false signals to mass-sensitive biosensors for protein microarray.

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