Utilization of nanotechnologies in condensation has been recognized as one opportunity to improve the efficiency large-scale thermal power and desalination systems. High-performance stable dropwise widely-used copper heat exchangers is appealing for energy water industries. In this work, a scalable low-cost nanofabrication approach was developed fabricate superhydrophobic oxide (CuO) nanoneedle surfaces promote even jumping-droplet condensation. By conducting systematic surface...

Superhydrophobic nanostructured surfaces have demonstrated outstanding capability in energy and water applications by promoting dropwise condensation, where fast droplet growth efficient condensate removal are two key parameters. However, these parameters remain contradictory. Although is easily obtained through coalescence jumping on uniform superhydrophobic surfaces, simultaneously achieving still challenging. Also, such droplets can grow to larger sizes without restriction if there no...

Condensation widely exists in nature and industry, its performance heavily relies on the efficiency of condensate removal. Recent advances micro-/nanoscale surface engineering enable condensing droplet removal from solid surfaces without extra energy cost, but it is still challenging to achieve passive transport microdroplets over long distances along horizontal surfaces. The mobility these droplets can be enhanced by lubricant oil infusion flat frequent coalescence, which lead fast growth...

Understanding the dynamics of microscale liquid propagation in micropillar arrays can lead to significant enhancement macroscopic modeling. Such a phenomenon is fairly complicated, and fundamental understanding lacking. The aim here estimate three main parameters propagation, capillary pressure, average height, contact angle on pillar side, through modeling experimental validation. We show that pressure not constant during evaluated using its maximum minimum values. height influences...

The crucial role of capillary pumping has motivated recent innovations in porous wicking materials for many energy and environment applications. Herein, the wick‐based liquid propagation along with a surface, including both macroscopic water transport behavior microscopic dynamics, group nanostructured surfaces, is investigated. These hybrid surfaces are fabricated scalable way by bonding copper micromeshes on flat chemical etching. exhibit outstanding wickability simultaneously improving...

Jumping-droplet enhanced condensation has recently attracted huge interest due to its remarkable potential of heat transfer performance enhancement, and studies have been done design superhydrophobic surfaces with various surface morphologies. We fabricated a micromesh-covered using facile scalable method. ESEM experiment results show that droplets in pores formed by the mesh wires had faster growth rate upward direction than on wires. This is mainly because confining role higher larger...

Evaporation plays an important role in many industrial applications, such as power generation, cooling, and thermal management. Micro/nanostructured surfaces have the potential of enhancing evaporation heat transfer, but its mass transport mechanism becomes more complicated because surface wettability capillarity effects. It is imperative to understand thin liquid film for transfer enhancement. Effective occurs region, instead adsorbed ultrathin region or intrinsic meniscus region. Although...

Low salinity water flooding has shown great promise due to its cost-effectiveness and low environmental impact for improving sustaining oil production. It is believed that injecting with ionic strength lower than of the reservoir changes from less more water-wet enhances recovery. This alteration phenomenon not well understood, complex interactions between oil, water, rock. Here we use molecular simulations characterize wettability 10.4-face calcite in a calcite/brine/oil system, address how...

Low salinity water flooding has shown great promise due to its cost-effectiveness and low environmental impact for improving sustaining oil production. It is believed that injecting with ionic strength lower than of the reservoir changes from less more water-wet enhances recovery. This alteration phenomenon not well understood, complex interactions between oil, water, rock. Here we use molecular simulations characterize wettability 10.4-face calcite in a calcite/brine/oil system, address how...