Volcanic　ash　dispersed　in　the　air　adheres　to　thermal　barrier　coatings　(TBCs)　on　the　hot　section　components　of　gas　turbines,　posing　a　severe　threat　to　aviation　safety.　Here,　we　report　a　novel　strategy　inspired　by　lotus　leaf　for　mitigating　the　molten　volcanic　ash　adhesion　and　corrosion.　A　hierarchical　micro-nano　structure　composed　of　arrayed　micro-conoids　and　numerous　nanoparticles　were　constructed　on　the　surface　of　NdYbZr2O7　ceramic　pellet　by　ultrafast　laser　direct　writing　technology,　whose　morphology　could　be　changed　by　optimizing　the　processing　parameters.　The　laser-ablated　pellet　exhibits　larger　contact　angle　of　molten　volcanic　ash　than　the　original　one,　revealing　an　enhanced　resistance　repelling　volcanic　ash.　This　phenomenon　is　primarily　attributed　to　the　air　trapped　in　the　micro-grooves,　together　with　these　nanoparticles.　Note　that　the　evolution　of　viscous　force　and　capillary　force　with　time　accelerates　the　transition　of　molten　volcanic　ash　from　the　Cassie　state　to　the　Wenzel　state　and　reduces　its　contact　angle.　Also,　this　structure　effectively　inhibits　the　infiltration　of　molten　volcanic　ash　by　rapidly　developing　a　reaction　layer.　These　findings　are　an　important　step　toward　the　design　and　development　of　next-generation　silicate　ash-repellent　TBCs.　©　2024