Polytetrafluoroethylene　(PTFE)　is　a　fluoropolymer　well　known　for　chemical　inertness　and　insolubility,　as　well　as　the　extreme　hydrophobicity　that　can　be　achieved.　Nonetheless,　those　unique　properties　make　PTFE　difficult　to　process,　PTFE　components　are　usually　fabricated　from　the　powder,　and　later　shaped　using　traditional　machining　processes.　So,　although　3D　printing　can　provide　flexibility,　fast　and　economically　production　of　on-demand　parts,　especially　complex　3D　geometries　that　are　hard　or　impossible　to　fabri-cate　by　machining　processes,　attempts　to　introduce　PTFE　into　3D　printing　are　extremely　rare　and　difficult.　Here,　we　report　a　3D　micro-printing　(IL-printing)　method　based　on　digital　ultraviolet　(UV)　lithography　for　fabrication　of　micrometer-scale　3D　PTFE　structures　and　investigate　their　superhydrophobic　properties　and　applications.　In　this　method,　PTFE　nanoparticles　are　dispersed　in　a　photocurable　solution　of　polyethy-lene　glycol　diacrylate　(PEGDA)　and　then　3D　printed　into　predefined　microstructures　by　layer-by-layer　UV　projection　exposures.　Subsequent　sintering　process　removes　other　polymer　with　relatively　low　decomposition　temperature　to　leave　pure　PTFE　microstructure.　In　the　experiments,　3D　PTFE　microscaffolds　for　droplet　lasers　and　electrostatic-driven　biomimetic　water　striders　have　been　demonstrated　to　show　the　wide　applications　of　the　micro/nano-structured　superhydrophobic　PTFE　surfaces　as　well　as　the　flexible　microengineering　ability　of　the　3D　IL-printing　method.　(C)　2020　Elsevier　Ltd.　All　rights　reserved.