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

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          Abstract

          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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          Author and article information

          Journal
          04 August 2009
          0908.0550

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          Custom metadata
          physics.optics physics.chem-ph

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