Evidence of Stranski–Krastanov growth at the initial stage of atmospheric water condensation

Song, Jie; Li, Qiang; Wang, Xiaofeng; Li, Jingyuan; Zhang, Shuai; Kjems, Jørgen; Besenbacher, Flemming; Dong, Mingdong

doi:10.1038/ncomms5837

Cited by 82 publications

(108 citation statements)

References 34 publications

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“…For example, water molecules can intercalate under the graphene or MoS 2 layers covering hydrophilic substrates. This confined water layer was found to significantly enlarge friction at graphene or MoS 2 surfaces [146][147][148][149][150]. The enhancement of friction by intercalated water can be primarily attributed to the activation of graphene flexural modes and the high frequency modes involving O-H vibrations which effectively promote energy transfer to the substrate.…”

Section: Perspectivesmentioning

confidence: 95%

Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Xiao

Shi

et al. 2019

Colloids and Interfaces

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Most inorganic material surfaces exposed to ambient air can adsorb water, and hydrogen bonding interactions among adsorbed water molecules vary depending on, not only intrinsic properties of material surfaces, but also extrinsic working conditions. When dimensions of solid objects shrink to micro- and nano-scales, the ratio of surface area to volume increases greatly and the contribution of water condensation on interfacial forces, such as adhesion (Fa) and friction (Ft), becomes significant. This paper reviews the structural evolution of the adsorbed water layer on solid surfaces and its effect on Fa and Ft at nanoasperity contact for sphere-on-flat geometry. The details of the underlying mechanisms governing water adsorption behaviors vary depending on the atomic structure of the substrate, surface hydrophilicity and atmospheric conditions. The solid surfaces reviewed in this paper include metal/metallic oxides, silicon/silicon oxides, fluorides, and two-dimensional materials. The mechanism by which water condensation influences Fa is discussed based on the competition among capillary force, van der Waals force and the rupture force of solid-like water bridge. The condensed meniscus and the molecular configuration of the water bridge are influenced by surface roughness, surface hydrophilicity, temperature, sliding velocity, which in turn affect the kinetics of water condensation and interfacial Ft. Taking the effects of the thickness and structure of adsorbed water into account is important to obtain a full understanding of the interfacial forces at nanoasperity contact under ambient conditions.

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Section: Perspectivesmentioning

confidence: 95%

Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Xiao

Shi

et al. 2019

Colloids and Interfaces

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“…First, that water layers coated by graphene still interact with water molecules on the environment because water molecules can adsorb and desorb through graphene edges and cracks [57,58]. That implies that processes of wetting and dewetting can happen below the graphene layer depending on environmental [59,60] and temperature conditions [61]. This fact has been used to study also the evolution of water films between a substrate and graphene as a function of temperature.…”

Section: Graphene Templatementioning

confidence: 99%

Imaging Water Thin Films in Ambient Conditions Using Atomic Force Microscopy

Santos¹,

Verdaguer

2016

Materials

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All surfaces exposed to ambient conditions are covered by a thin film of water. Other than at high humidity conditions, i.e., relative humidity higher than 80%, those water films have nanoscale thickness. Nevertheless, even the thinnest film can profoundly affect the physical and chemical properties of the substrate. Information on the structure of these water films can be obtained from spectroscopic techniques based on photons, but these usually have poor lateral resolution. When information with nanometer resolution in the three dimensions is needed, for example for surfaces showing heterogeneity in water affinity at the nanoscale, Atomic Force Microscopy (AFM) is the preferred tool since it can provide such resolution while being operated in ambient conditions. A complication in the interpretation of the data arises when using AFM, however, since, in most cases, direct interaction between a solid probe and a solid surface occurs. This induces strong perturbations of the liquid by the probe that should be controlled or avoided. The aim of this review is to provide an overview of different AFM methods developed to overcome this problem, measuring different interactions between the AFM probe and the water films, and to discuss the type of information about the water film that can be obtained from these interactions.

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“…Recently, graphene has been employed to encapsulate objects such as single yeast cells [31], bacteria [32], water molecules [33][34][35][36][37][38][39][40][41][42], fluorescent films [43], single-stranded DNA and DNA nanostructures [44,45]. It was demonstrated that graphene replicates the topography of the DNA molecules [44,45].…”

Section: Introductionmentioning

confidence: 99%

Enhanced structural stability of DNA origami nanostructures by graphene encapsulation

et al. 2016

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We demonstrate that a single-layer graphene replicates the shape of DNA origami nanostructures very well. It can be employed as a protective layer for the enhancement of structural stability of DNA origami nanostructures. Using the AFM based manipulation, we show that the normal force required to damage graphene encapsulated DNA origami nanostructures is over an order of magnitude greater than for the unprotected ones. In addition, we show that graphene encapsulation offers protection to the DNA origami nanostructures against prolonged exposure to deionized water, and multiple immersions. Through these results we demonstrate that graphene encapsulated DNA origami nanostructures are strong enough to sustain various solution phase processing, lithography and transfer steps, thus extending the limits of DNA-mediated bottom-up fabrication.

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Evidence of Stranski–Krastanov growth at the initial stage of atmospheric water condensation

Cited by 82 publications

References 34 publications

Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Thickness and Structure of Adsorbed Water Layer and Effects on Adhesion and Friction at Nanoasperity Contact

Imaging Water Thin Films in Ambient Conditions Using Atomic Force Microscopy

Enhanced structural stability of DNA origami nanostructures by graphene encapsulation

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