Superoleophobic surfaces: design criteria and recent studies

Kota, Arun K.; Mabry, Joseph M.; Tuteja, Anish

doi:10.1680/si.12.00017

Cited by 72 publications

(73 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…64,65 The invasion of liquid can be inhibited on material surfaces through careful selection of the design, geometry, size and contour of surface features and protrusions. 64,[66][67][68] An energy barrier unfavorable to liquid wicking may be maximized in this manner. 59,[69][70][71][72][73] This energetic barrier, if it is larger than the inherent thermal energy 7 needs to be overcome by mechanical means such as vibrations, 74,75 impact 76,77 or load imposed on the drop.…”

Section: Defining Superhydrophobicity and Superhydrophilicitymentioning

confidence: 99%

See 1 more Smart Citation

Physics and applications of superhydrophobic and superhydrophilic surfaces and coatings

Drelich

Marmur

2014

Surface Innovations

156

View full text Add to dashboard Cite

The terms superhydrophobicity and superhydrophilicity were introduced not very long ago, in 1996 and 2000, respectively.The former is used to describe exceptionally weak and the latter used to indicate strong interactions of materials and IntroductionAfter more than two centuries of research, capillarity and wetting phenomena still remain popular topics of investigation in many modern surface chemistry laboratories. Curiosity and fascination with rain droplets splashing in a puddle, water droplets decorating flowers, leaves of plants and fruits after rain or watering and colorful soap bubbles shaped at the end of wheat straw have never been stronger and go beyond scientific laboratories. Colorful images of liquid droplets and puddles, illustrating their behavior on a variety of surfaces, thrive in professional journals, popular magazines and Internet. However, terms such as wetting, spreading and contact angle are still puzzling to the layman and beginner researcher. To facilitate

show abstract

Section: Defining Superhydrophobicity and Superhydrophilicitymentioning

confidence: 99%

“…68,[119][120][121][122][123][124][125][126][127][128][129] Review of all the literature and possible applications targeted by the authors exceeds the scope of this review. Only a few examples of commercial products that authors are either aware of or found through the Internet are provided.…”

Section: Applications Of Superhydrophobic Oleophobic Superhydrophilmentioning

confidence: 99%

Physics and applications of superhydrophobic and superhydrophilic surfaces and coatings

Drelich

Marmur

2014

Surface Innovations

156

View full text Add to dashboard Cite

show abstract

“…However, based on previous work [44][45][46][47][48][49][50][51][52][53][54] that recognized the importance of re-entrant texture (that is, convex topography, see Figure 2e; also explained in 'Critical role of re-entrant texture' section) in designing oil-repellent surfaces, several researchers have now engineered artificial (or synthetic) superoleophobic surfaces. 9,[55][56][57] Typically, most surfaces that repel lower surface tension liquids, such as oil, can also repel higher surface tension liquids, such as water. Consequently, most superoleophobic surfaces are also superhydrophobic.…”

Section: Introductionmentioning

confidence: 99%

The design and applications of superomniphobic surfaces

2014

Self Cite

View full text Add to dashboard Cite

Surfaces that display contact angles 41501 along with low contact angle hysteresis with essentially all high and low surface tension liquids, including water, oils and alcohols, are known as superomniphobic surfaces. Such surfaces have a range of commercial applications, including self-cleaning, non-fouling, stain-free clothing, drag reduction, corrosion prevention and separation of liquids. Such surfaces have thus generated immense academic and industrial interest in recent years. In this review, we discuss the systematic design of superomniphobic surfaces. In particular, we discuss the significance of surface energy, roughness and the critical role of re-entrant texture in obtaining the so-called Cassie-Baxter state with low surface tension liquids. We also discuss how hierarchical scales of texture can yield high contact angles and decrease the contact angle hysteresis of superomniphobic surfaces by reducing the solid-liquid contact area. On the basis of this understanding, we discuss dimensionless design parameters that allow for the systematic design of superomniphobic surfaces. We also review the current literature on superomniphobic surfaces, paying particular attention to surfaces that demonstrate good mechanical, chemical and radiation durability-traits that are essential for any commercial application of superomniphobic surfaces. Finally, we conclude by identifying the unresolved challenges in the fabrication of durable superomniphobic surfaces and highlight the future needs in the field.

show abstract

“…To proposed as, for example, the modification of the working solid interface by realizing materials with a liquid surface, replacing or covering the structured, solid one [17][18][19]. By this strategy, the repellence against fluids of different nature and with different chemico-physical properties -termed as amphiphobicity (hydrophobicity plus oleophobicity) or, more generally, as omniphobicity (repellence against everything) -have been conceived, paying also attention to the design of self healing and high pressure resistant synthetic surfaces [20][21][22][23]. However, the realization of durable amphiphobic products, applicable in a wide range of environmental conditions, still represents a great challenge to be overcome, which is addressing extraordinary efforts in the research community.…”

Section: Introductionmentioning

confidence: 99%