The generation and control of microscale flows are crucial for fundamental as well as applied aspects of microfluidics. Commonly employed strategies for creating microflows are based on the electric field,...

Transport of liquid marbles is gaining significant attention owing to its application in various fields, including digital micro fluidics and drug delivery. Though various strategies exist for the transport of liquid marbles over the liquid substrates, on-demand transport over solid substrate remains an unexplored challenge. Most of the existing transport strategies rely on the properties of the droplet, limiting their applicability for specific liquids. Herein, we demonstrate an on-demand liquid marble transport platform based on local surface deformation of a polymer layer controlled by the thermal expansion of the confined air cavity. The platform is made of acrylic with a 5 mm hole, and a thin super hydrophobic polymer layer over it. To obtain maximum surface deformation, we have optimized the parameters such as hole diameter and thickness of the polymer layer. The hydrophobicity of the polymer layer is enhanced by coating the surface with Polyvinylidene difluoride (PVDF) nanoparticles for efficient liquid marble transport. We demonstrate the transport of liquid marble of volume 3 µL with a laser source (450 nm). A localized temperature rise of about 0.6 °C at the surface is sufficient to realize the transport of liquid marbles. The demonstrated strategy is simple and could be used for the on-demand transport of liquid marble, irrespective of the properties of the liquid.