Straight roads into nowhere – obvious and not-so-obvious biological models for ferrophobic surfaces

• Wilfried Konrad,
• Christoph Neinhuis and
• Anita Roth-Nebelsick

Beilstein J. Nanotechnol. 2022, 13, 1345–1360, doi:10.3762/bjnano.13.111

• ) and the skin structure of springtails (Collembola, see Figure 3) [3][21][22], both of which are known to accommodate gas layers. Kariba weed (Salvinia molesta) In the case of Salvinia molesta, stable water/air interfaces form at the tips of leaf hairs, which are topped by eggbeater-like structures

• [26]. The Salvinia hair type appears to represent the result of evolutionary adaptation to a high performance and is, therefore, considered as an attractive biological model for applications requiring surfaces that remain dry upon immersion [5][29]. Springtails (Collembola) Springtails (Collembola

Collembola cuticles and the three-phase line tension

• Håkon Gundersen,
• Hans Petter Leinaas and
• Christian Thaulow

Beilstein J. Nanotechnol. 2017, 8, 1714–1722, doi:10.3762/bjnano.8.172

• springtails (Collembola) are superhydrophobic, but the mechanism has not been described in detail. Previous studies have suggested that overhanging surface structures play an important role, but such structures are not a universal trait among springtails with superhydrophobic cuticles. A novel wetting

• . clavatus does not have overhanging surface structures. This large change in observed contact angles can be explained with a modest change of the three-phase line tension. Keywords: springtails (Collembola); superhydrophobicity; three-phase line tension; Introduction Collembola, a group of small