Figure 4

AFM surface topographies and surface relief parameters of carbonized cellulose microtubes (CCMT) and nanogrooved carbonized cellulose microtubes (NGCCMT) at different sonication time periods.

AFM surface topographies and surface relief parameters of carbonized cellulose microtubes (CCMT) and nanogrooved carbonized cellulose microtubes (NGCCMT) at different sonication time periods.