Fig. 1. Schematic diagram of the experimental platform of heat induced deformation of levitated droplet.

Fig. 2. High speed images showing the rim spray of an acoustic levitated methanol droplet (D₀ = 1.81 mm) suddenly exposed to hot product gases of a Bunsen flame.

Fig. 3. Parametrical description of the breaking process: (a) Spreading diameter D_s; (b) the dimensionless　diameter D_c of liquid core; (c) equatorial curvature radii R_cav vs. time; (d) liquid and air molecule distribution at the interface at ambient temperature and strong evaporation conditions^[21].

Fig. 4. Atomization methanol droplets after the enhancement of the acoustic field via the mandatory sudden (a) decrease of acoustic field height and (b) increase of the current of ultrasound generator.

Fig. 5. Film disintegration of an acoustic levitated methanol droplet (D₀ = 3.15 mm) suddenly exposed to hot product gases of a Bunsen flame.

Fig. 6. (a) Dimensionless average film thickness scaled by Faraday wave length and (a′) schematic setup of a standing Faraday wave configuration; (b) the dimensionless initial rim thickness; (c) rim spray of daughter droplets.

Fig. 7. Normal sputtering of an acoustic levitated methanol droplet (D₀ = 3.42 mm) suddenly exposed to hot product gases of a Bunsen flame.