Figure 4. Optical transmittance of PCL nanofiber membranes, HAM and glass coverslips. Glass coverslips (control) showing maximum transmittance of 85% at a wavelength of 700 nm. HAM showing 38% of transmittance at a wavelength of 700 nm, whereas wet PCL membrane showing 27% transmittance and dry PCL membrane showing only 3% light transmittance at a wavelength of 700 nm.