4 papers
Molecular water accumulation on silica measured by land-contrast interferometry with picometer height resolution
Xuefeng Wang, Ming zhao, David D Nolte
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-destr…
Mass-sensing BioCD Protein Array towards Clinical Application: Prostate Specific Antigen Detection in Patient Sera
Xuefeng Wang, Ming Zhao, David D Nolte +1
Mass-sensing biosensor arrays for protein detection require no fluorophores or enzyme labels. However, few mass biosensor protein arrays have demonstrated successful application in…
Optical Trajectory of the Insulator-to-metal Transition of Ultra-thin Gold Films
Xuefeng Wang, Ming Zhao, David D Nolte
We apply interferometric picometrology to measure the complex refractive index and dielectric properties of ultra-thin gold films as a continuous function of thickness from 0.2 nm…
Strong Anomalous Optical Dispersion of Graphene: Complex Refractive Index Measured by Picometrology
Xuefeng Wang, Yong P. Chen, David D. Nolte
We apply spinning-disc picometrology to measure the complex refractive index of graphene on thermal oxide on silicon. The refractive index varies from n = 2.4-1.0i at 532 nm to n =…