A5100660927- Surface Modification and Superhydrophobicity
- Fluid Dynamics and Heat Transfer
- Adhesion, Friction, and Surface Interactions
- Nanomaterials and Printing Technologies
- Pickering emulsions and particle stabilization
Indian Institute of Technology Patna
2017-2021
It has been recently shown that small-volume droplets on lubricant-infused surfaces (LISs) can be analytically modeled using rotationally symmetric constant mean curvature (CMC) surfaces. While such an approach is available for noncloaked droplets, a similar missing cloaked are ubiquitous in number of LIS-related applications. The presence thin cloaking film the top spherical cap portion and its gradual transition to bulk meniscus remain unaddressed implications interfacial profile droplets....
Interaction of liquids with surfaces is ubiquitous in our physical environment as well many engineering applications. Recent advances on this topic have not only provided us valuable insight into nature's design, but also enabled improved fluidic manipulation for liquid-based printing applications such biomicroarrays protein and DNA sequencing, multicolor polymer-based LED displays, inkjet printing, solder droplet among others. For example, contact lines, which are typically circular a...
Superior mobility of droplets on lubricant-infused surfaces (LIS) has recently attracted significant attention for designing liquid-repellent surfaces. Unlike sessile flat wherein the contact line is easily visible in experiments, LIS masked by lubricant meniscus, and special imaging techniques are required to visualize hidden droplet-lubricant interface. Moreover, overall shape deviates significantly from spherical cap geometry even at very low droplet volumes. These difficulties...
We show that it is fundamentally inaccurate to apply force-balance models predict the gravity/buoyancy induced detachment of quasi-steadily growing pendant droplets/bubbles. solve governing Young–Laplace (Y–L) equation clarify all forces acting on a droplet/bubble always sum up zero, even prior or beyond well-accepted critical volume detachment. Accordingly, typical force balance reported in literature do not hold any physical justification and are merely curve fit experimental trends....