Contribution of the water meniscus inside the viral capsid to the optical signal. Intensity color maps at different desiccation stages are shown for values of water occupation: 100% (A), 75% (B) and 50% (C). Insets show refractive index color map showing the corresponding water density. As a guided for the eye black lines have been used to highlight tip and capsid contours.
Douas et al. Nanoscale Research Letters 2013 8:171 doi:10.1186/1556-276X-8-171