Figure 4: Confocal Raman spectroscopic imaging of the CaCO3 microlens array.
From: Self-assembly of amorphous calcium carbonate microlens arrays
(a) Schematic illustration of the depth scan. (b–d) Depth scanned Raman imaging obtained by integrating over the wavenumber ranges of (b) carbonate (1,040–1,125 cm−1), (c) water (3,000–3,500 cm−1) and (d) organic components (2,800–3,000 cm−1), respectively. The images in the same column indicate the same depth. (e) Raman imaging of carbonate at 0° and 90° polarization of incident laser light. All the scale bars are 5 μm. CCD cts, charge-coupled device counts.
