Orientational dependence of the IR absorbing amide bands of silk is demonstrated from two orthogonal longitudinal and transverse microtome slices with a thickness of only ∼100 nm. Scanning near-field optical microscopy (SNOM) which preferentially probes orientation perpendicular to the sample’s surface was used. Spatial resolution of the silk−epoxy boundary was &#876... https://www.roneverhart.com/Paistinpannu-rst-kupari-o-28-cm-3-L/