among the 5 wt% gels described in section 2.2. Liquid paraffin #350 was removed to obtain xerogels by immersing each gel in acetone for one week, but the gels from C14GL (3) and C16GL (4) dissolved in acetone, so ethanol was used for deoiling for one week. FE-SEM observations were performed after the osmium coating of the obtained xerogels. Figure shows the FE-SEM images of various xerogels.