Constructing honeycomb micropatterns on nonplanar substrates with high glass transition temperature polymers

► Polymers with high Tg are used to prepare microporous films on nonplanar substrates. ► Polymer films with breath figure array can replicate the shape of nonplanar surface. ► Tg and molecular topography of polymers are not key factors for the film formation. ► A hypothesis involving polymer plasticization and conformation is formulated.