Design of a self-cleanable multilevel anticounterfeiting interface through covalent chemical modulation

Abstract

Counterfeit products have posed a significant threat to consumer safety and the global economy. To address this issue, extensive studies have been exploring the use of coatings with unclonable, microscale...

Covalent crosslinking chemistry for controlled modulation of nanometric roughness and surface free energy

“…In the past, 1,4-conjugate addition reaction was extended to develop hierarchically rough coatings to associate heterogeneous liquid wettability. 71–74 In spite of developing rough/porous coating, here, a completely orthogonal strategy is adopted. Covalent crosslinking chemistry is strategically and unprecedentedly introduced to obtain a simple and rapid sol–gel conversion of a reaction mixture of selected primary amine-containing polydimethylsiloxane (poly[dimethylsiloxane- co -(3-aminopropyl)methylsiloxane] (PDMS- co -APMS)), self-polymerizable monomer (3-(2-aminoethylamino)propyltrimethoxysilane (AEAPTMS)) and selected crosslinkers (1,6-hexanediol diacrylate (2-Acl), trimethylolpropane triacrylate (3-Acl), and dipentaerythritol penta-acrylate (5-Acl)) through a 1,4-conjugate addition reaction under ambient conditions, as shown in Scheme 1.…”

Observing Real-Time Adhesion of Microparticles on Glass Surfaces

“…Recently, Dhar et al reported a transparent superhydrophobic coating using dipentaerythritol penta-acrylate reacted with branched polyethylenimine which was spray-coated on glass to impart hydrophobicity . Due to this superhydrophobic coating, a water flow removed the deposited model dust particles . Zhang and Seegar fabricated a new group of nanostructures based on silicone nanofilaments .…”

“…Inspired by nature, glass surfaces have been treated with transparent superhydrophobic coatings such as fluorosilane − and nonfluorinated silane − to remove dust particles passively. Recently, Dhar et al reported a transparent superhydrophobic coating using dipentaerythritol penta-acrylate reacted with branched polyethylenimine which was spray-coated on glass to impart hydrophobicity . Due to this superhydrophobic coating, a water flow removed the deposited model dust particles .…”

“…17 Due to this superhydrophobic coating, a water flow removed the deposited model dust particles. 17 Zhang and Seegar fabricated a new group of nanostructures based on silicone nanofilaments. 18 These filaments were grown on glass and immersed in a toluene solution, and their growth was controlled by regulating water concentration during the condensation of trichlorosilane.…”

Designing a slippery/superaerophobic hierarchical open channel for reliable and versatile underwater gas delivery

“…Compared with liquid manipulation, it is also valuable to investigate underwater gas control due to the potential applications in aeration, 30 gas-involved catalysis, 31 water splitting, 32 anticounterfeiting, 33 etc. Superhydrophobic substrates, i.e.…”