A Review of Condensation Frosting

Nath, Saurabh; Ahmadi, S. Farzad; Boreyko, Jonathan B.

doi:10.1080/15567265.2016.1256007

Cited by 167 publications

(120 citation statements)

References 141 publications

Supporting

Mentioning

115

Contrasting

Order By: Relevance

“…This is a very important aspect of the entire icing phenomenon, since droplets do not appear in isolation. Previously, it was demonstrated that freezing can propagate on surfaces by growing frost-halos, 17 ice-bridging, [18][19][20][21] shattering of exploding droplets, 22 and ice shrapnels. 23 Here we report and investigate an unexplored mechanism of cascade freezing amongst supercooled droplets.…”

mentioning

confidence: 99%

Cascade Freezing of Supercooled Water Droplet Collectives

et al. 2018

View full text Add to dashboard Cite

Surface icing affects the safety and performance of numerous processes in technology.Previous studies mostly investigated freezing of individual droplets. The interaction among multiple droplets during freezing is investigated less, especially on nanotextured icephobic surfaces, despite its practical importance as water droplets never appear in isolation, but in groups. Here we show that freezing of a supercooled droplet leads to spontaneous self-heating and induces strong vaporization. The resulting, rapidly propagating vapor front causes immediate cascading freezing of neighboring supercooled droplets upon reaching them. We put forth the explanation that, as the vapor approaches cold neighboring droplets, it can lead to local supersaturation and formation of airborne microscopic ice crystals, which act as freezing nucleation sites. The sequential triggering and propagation of this mechanism results in the rapid freezing of an entire droplet ensemble resulting in ice coverage of the nanotextured surface. Although cascade freezing is observed in a low-pressure environment, it introduces an unexpected pathway of freezing propagation that can be crucial for the performance of rationally designed icephobic surfaces.

show abstract

mentioning

confidence: 99%

Cascade Freezing of Supercooled Water Droplet Collectives

et al. 2018

View full text Add to dashboard Cite

show abstract

“…To elucidate the difference in the frost growth, we discuss the locations of condensation droplets and frozen droplets on the specimen surfaces, as shown in Figure 7. In Figure 7a, a condensation droplet freezes and forms an ice bridge [33] on the glass surface. The adjacent condensation droplet is freezing by the contact of the ice bridge.…”

Section: Frost Weightmentioning

confidence: 99%

“…The adjacent condensation droplet is freezing by the contact of the ice bridge. The occurrence of frost crystal growth from the frozen droplets will be followed by the local growth of the ice bridges [33].…”

Section: Frost Weightmentioning

confidence: 99%

The Inhibition of Icing and Frosting on Glass Surfaces by the Coating of Polyethylene Glycol and Polypeptide Mimicking Antifreeze Protein

et al. 2020

View full text Add to dashboard Cite

The development of anti-icing, anti-frosting transparent plates is important for many reasons, such as poor visibility through the ice-covered windshields of vehicles. We have fabricated new glass surfaces coated with polypeptides which mimic a part of winter flounder antifreeze protein. We adopted glutaraldehyde and polyethylene glycol as linkers between these polypeptides and silane coupling agents applied to the glass surfaces. We have measured the contact angle, the temperature of water droplets on the cooling surfaces, and the frost weight. In addition, we have conducted surface roughness observation and surface elemental analysis. It was found that peaks in the height profile, obtained with the atomic force microscope for the polypeptide-coated surface with polyethylene glycol, were much higher than those for the surface without the polypeptide. This shows the adhesion of many polypeptide aggregates to the polyethylene glycol locally. The average supercooling temperature of the droplet for the polypeptide-coated surface with the polyethylene glycol was lower than for the polypeptide-coated surface with glutaraldehyde and the polyethylene-glycol-coated surface without the polypeptide. In addition, the average weight of frost cover on the specimen was lowest for the polypeptide-coated surface with the polyethylene glycol. These results argue for the effects of combined polyethylene glycol and polypeptide aggregates on the locations of ice nuclei and condensation droplets. Thus, this polypeptide-coating with the polyethylene glycol is a potential contender to improve the anti-icing and anti-frosting of glasses.

show abstract

“…An ideal condition for icephobicity is one where a freezing droplet cannot ruin the micro‐/nanostructure . Inspired by nature, the lotus leaf can resist the impact of water droplets without performance degradation for a long time, which is defined as typically representative in the field of superhydrophobicity.…”

Section: Figurementioning

confidence: 99%

Robust Icephobic Performance of Flexible Needles

Liu

Zhao

et al. 2018

ChemNanoMat

View full text Add to dashboard Cite

Superhydrophobic micro‐/nanopatterned structures exhibit robust water/ice repellence in harsh environments, which is significant for theoretical study and industrial applications such as cooling in nuclear power, heat transfer, and self‐cleaning for aircraft. However, the reported studies regarding icephobic functional surfaces based on rigid materials have indicated potential dangers in applications, e. g., the roughness topographies are easily ruined in the icing process, which limits further application and study. In this study, polydimethylsiloxane‐based flexible microneedles (FNs) with ZnO nanorods are designed and fabricated and further characterized with robust icephobicity at a temperature of 0 °C. In this system, the flexible microneedles could bend to match the deformation caused by icing from condensed droplets, resulting in protecting the nanorods on its surface, which is significantly promising for durable icephobicity in harsh environments.

show abstract

A Review of Condensation Frosting

Cited by 167 publications

References 141 publications

Cascade Freezing of Supercooled Water Droplet Collectives

Cascade Freezing of Supercooled Water Droplet Collectives

The Inhibition of Icing and Frosting on Glass Surfaces by the Coating of Polyethylene Glycol and Polypeptide Mimicking Antifreeze Protein

Robust Icephobic Performance of Flexible Needles

Contact Info

Product

Resources

About