[1] THORODDSEN S T, THORAVAL M J, TAKEHARA K, et al.. Droplet splashing by a slingshot mechanism ［J］. Phys. Rev. Lett, 2011, 106(3): 034501.

[2] HAPGOOD K P, KHANMOHAMMADI B. Granulation of hydrophobic powders ［J］. Powder Technol, 2009, 189(2): 253-262.

[3] NGUYEN T, SHEN W, HAPGOOD K. Drop penetration time in heterogeneous powder beds ［J］. Chem. Eng. Sci, 2009, 64(24): 5210-5221.

[4] PASANDIDEH-FARD M, AZIZ S D, CHANDRA S, et al.. Cooling effectiveness of a water drop impinging on a hot surface ［J］. International Journal of Heat and Fluid Flow, 2001, 22 (2): 201-210.

[5] VAN DAM D B, LE CLERC C. Experimental study of the impact of an ink-jet printed droplet on a solid substrate ［J］. Phys. Fluids, 2004, 16 (9): 3403-3414.

[6] QUR D. Fluid dynamics: impact on Everest ［J］. Nature, 2005, 435(7046): 1168-1169.

[7] GILET T, BUSH J W M. Erratum: Chaotic bouncing of a droplet on a soap film ［J］. Physical review letters, 2009, 103: 019901.

[8] RIBOUX G, GORDILLO J M. Experiments of drops impacting a smooth solid surface: A model of the critical impact speed for drop splashing ［J］. Physical Review Letters, 2014, 113(2): 024507.

[9] GUMAS M, MARN  G, LOHSE D. Drop impact experiments of non-Newtonian liquids on micro-structured surfaces ［J］. Soft Matter, 2012, 8(41): 10725-10731.

[10] NELSON E L, KATSURAGI H, MAYOR P, et al.. Projectile interactions in granular impact cratering ［J］. Phys. Rev. Lett, 2008, 101(6): 068001.

[11] LOHSE D, BERGMANN R, MIKKELSEN R, et al.. Impact on soft sand: void collapse and jet formation ［J］. Phys. Rev. Lett, 2004, 93(19): 198003.

[12] BELADJINE D, AMMI M, DGER L, et al.. Collision process between an incident bead and a three-dimensional granular packing ［J］. Phys. Rev. E, 2007, 75(6): 061305.

[13] WALSH A M, HOLLOWAY K E, HABDAS P, et al.. Morphology and scaling of impact craters in granular media ［J］. Phys. Rev. Lett, 2003, 91(10): 104301.

[14] JAEGER H M, NAGEL S R, BEHRINGER R P. Granular solids, liquids, and gases ［J］. Rev. Mod. Phys, 1996, 68(4): 1259.

[15] DE GENNES P G. Granular matter: a tentative view ［J］. Rev. Mod. Phys, 1999, 71(2): s374.

[16] KADANOFF L P. Built upon sand: theoretical ideas inspired by granular flows ［J］. Rev. Mod. Phys, 1999, 71(1): 435-444.

[17] ARANSON I S, TSIMRING L S. Patterns and collective behavior in granular media: theoretical concepts ［J］. Rev. Mod. Phys, 2006, 78(2): 641.

[18] KATSURAGI H. Morphology scaling of drop impact onto a granular layer ［J］. Physical Review Letters, 2010, 104(21): 208001.

[19] LONG E J, HARGRAVE G K, COOPER J R, et al.. Experimental investigation into the impact of a liquid droplet onto a granular bed using three-dimensional, time-resolved, particle tracking ［J］. Physical Review E, 2014, 89(3): 032201.

[20] CLANET C, BGUIN C, RICHARD D, et al.. Maximal deformation of an impacting drop ［J］. Journal of Fluid Mechanics, 2004, 517: 199-208.

[21] NEFZAOUI E, SKURTYS O. Impact of a liquid drop on a granular medium: Inertia, viscosity and surface tension effects on the drop deformation ［J］. Experimental Thermal and Fluid Science, 2012, 41: 43-50.

[22] ZHAO S C, DE JONG R, VAN DER MEER D. Raindrop impact on sand: a dynamic explanation of crater morphologies ［J］. Soft Matter, 2015, 11(33): 6562-6568.

[23] ZHAO S C, DE JONG R, VAN DER MEER D. Liquid-grain mixing suppresses droplet spreading and splashing during Impact ［J］. Physical Review Letters, 2017, 118(5): 054502.

[24] ANANTH PRAVEEN KUMAR A, SANDIREDDY V P, BANERJEE T, et al.. Dynamics of a liquid droplet on a granular bed of microstructured particles: from lens formation to marble effect ［J］. Industrial & Engineering Chemistry Research, 2015, 54(3): 1131-1141.

[25] MARSTON J O, SPRITTLES J E, ZHU Y, et al.. Drop spreading and penetration into pre-wetted powders ［J］. Powder Technology, 2013, 239: 128-136.

[26] GAO T X, SINGARAVELU A S S, OKA S, et al.. Granule formation and structure from single drop impact on heterogeneous powder beds ［J］. International Journal of Pharmaceutics, 2018, 552(1/2): 56-66.

[27] LEMBACH A, ROISMAN I, TROPEA C. Drop impact on porous media ［C］. Proceeding of ILASS-Europe, 24th European Conference on Liquid Atomization and Spray Systems, Estoril, Portugal, 2011.

[28] STAROV V M, KOSTVINTSEV S R, SOBOLEV V D, et al.. Spreading of liquid drops over dry porous layers: complete wetting case ［J］. Colloid Interface Sci, 2002, 252(2): 397-408.

[29] WANG W, ZHANG M, ZHAN G Q, et al..Study on permeability characteristics of porous materials for aerostatic support ［J］. Opt. Precision Eng., 2017, 25(9): 2359-2366. (in Chinese)

[30] DANINO D, MARMUR A. Radial capillary penetration into paper: limited and unlimited liquid reservoirs ［J］. Colloid Interface Sci, 1994, 166(1): 245-250.

[31] BORHAN A, RUNGTA K K. An experimental study of the radial penetration of liquids in thin porous substrates ［J］. Colloid Interface Sci, 1993, 158(2): 403-411.

[32] REIS N C Jr, GRIFFITHS R F, MANTLE M D, et al.. Investigation of the evaporation of embedded liquid droplets from porous surfaces using magnetic resonance imaging ［J］. Heat Mass Transfer, 2003, 46(7): 1279-1292.

[33] REIS N C Jr, GRIFFITHS R F, MANTLE M D. et al.. MRI investigation of the evaporation of embedded liquid droplets from porous surfaces under different drying regimes ［J］. Heat Mass Transfer, 2006, 49(5/6): 951-961.

[34] MUNUHE T, LEBRUN A, ZHU L, et al.. Using micro-ct to investigate nanofluid droplet sorption in dry powder beds ［J］. Powder Technology, 2017, 305: 232-240.