Vision-inspired Bubble Dynamics on Hybrid Nanowrires
Digital bubbles. In this work, we aim to understand the connection between bubble formation on hybrid nanowires and their boiling crisis phenomena by integrating AI-assisted machine vision that collects detailed bubble statistics autonomously.
Big Data from Tiny droplets
Big data from tiny droplets. This video clip shows deep learning microscope droplet-based heat flux mapping. The proposed deep learning framework enables the researchers to autonomously harness physical descriptors and quantify thermal performance at extreme resolutions
Transport through Polycrystal Inverse Opals
Capillary performance parameters of both single crystalline and polycrystalline inverse opals are reported with the aim to elucidate the effects of grain boundaries on liquid transport through porous media. Single crystalline copper IOs exhibit an order of magnitude higher capillary performance parameters, independent of the pore diameters, compared to polycrystalline copper IOs due to the dominant hydraulic resistances from the grain boundaries.
Evaporation Atomistic Level Calculations
Atomistic level simulations to understand the liquid-vapor interfaces. In this calculation, the first evaporation of water molecules starts at 120 ps. The mean temperature of the liquid meniscus reaches a constant temperature at 300 ps, and the meniscus becomes stabilized at 600 ps.
Hydrophilic Copper Oxide Nanostructures
Wetting behaviors of nanostructured surfaces containing copper oxide nanostructures via a chemical oxidation method are observed. Addressing the direct control of surface wettability has been a significant challenge for a variety of applications from self-cleaning surfaces to phase-change applications.
Coarse Grained Calculations : Nanotubes
Aligned carbon nanotube films promise the unusual combination of high thermal conductivity and mechanical compliance. Here, the mechanical compliance of single-walled nanotube films has been measured and linked to their morphology and microscopic motions, including zipping, unzipping, and entanglement. The physical mechanisms governing the mechanical response include bending forces or van der Waals interactions, with the dominant mechanism depending on the nanotube density and alignment. The dependence of film morphology on mechanical modulus explored here provides the foundation for modeling of a variety of other properties including thermal and electrical conductivity.