Figure 2From: Controllable and switchable drug delivery of ibuprofen from temperature responsive composite nanofibers Scanning electron spectroscopy images of three types of NFs, a) PCL/IP, b) pNIPAM/IP and c) pNIPAM/IP/PCL composite NFs and their corresponding histograms in NF diameter distribution d), e) and f), respectively. Scale bars for (a), (b) and (c) are 10, 1 and 1 μm, respectively.Back to article page