Influences of Relative Humidity and Dwell Time on Silica/Graphene Adhesion Force of a Cone–Plane Contact

Shi, Kai; Hu, Manfeng; Huang, Ping

doi:10.1021/acs.langmuir.2c01294

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…The experiment was performed by using an atomic force microscope (Nano-Instruments CSPM-4000 AFM) with contact mode. In addition, graphene was prepared by mechanical method . Eventually, graphene was covered on a silica (the thickness of the oxide film is 300 nm) surface.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, graphene was prepared by mechanical method. 28 Eventually, graphene was covered on a silica (the thickness of the oxide film is 300 nm) surface. During the experiment, the time dependence of adhesion force under five kinds of relative humidity (RH) was measured, including RH = 45%, RH = 55%, RH = 65%, RH = 75%, and RH = 85%, and RH was kept constant in each experiment.…”

Section: ■ Introductionmentioning

confidence: 99%

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Time Dependence of the Graphene Surface Adhesion Force of the Sphere–Plane Contact at Different Relative Humidities

Shi,

Hu,

Huang

2023

Langmuir

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Graphene has a promising application prospect in integrated circuits and microelectromechanical systems, and sphere–plane contacts are their common contact types. At present, it is difficult to explain the time dependence of the adhesion force of the sphere–plane contact by conventional theory. Therefore, a single rough peak of sphere–plane contact adhesion force model based on variable water contact angle theory and Bradley contact theory was established; the aim is to reveal the changing law of graphene adhesion force. Then, the time dependence of the graphene surface adhesion force at different humidity levels was investigated by using an atomic force microscopy spherical probe. Finally, a quantitative comparative analysis of the theory and experiment was performed. The results show that the theoretical adhesion force was in good agreement with the experimental measurement results. The time dependence of graphene surface adhesion was not obvious within a relative humidity of 45–55%. When the relative humidity was greater than 65%, the graphene surface adhesion first increased and then decreased with dwell time and finally tended to be stable. Because of the increase in relative humidity, the capillary condensation effect increases, and then the adhesion force increases with the development of the meniscus. When the water film was generated on the sample surface, the adhesion force decreased until the meniscus achieved equilibrium.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Time Dependence of the Graphene Surface Adhesion Force of the Sphere–Plane Contact at Different Relative Humidities

Shi,

Hu,

Huang

2023

Langmuir

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Navigating the Landscape of Dry Assembling Ordered Particle Structures: Can Solvents Become Obsolete?

Sotthewes,

Jimidar

2024

Small

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A spur on miniaturized devices led scientists to unravel the fundamental aspects of micro‐ and nanoparticle assembly to engineer large structures. Primarily, attention is given to wet assembly methods, whereas assembly approaches in which solvents are avoided are scarce. The “dry assembly” strategies can overcome the intrinsic disadvantages that are associated with wet assembly, e.g., the lack of versatility and scalability. This review uniquely summarizes the recent progress made to create highly ordered particle arrays without using a wet environment. Before delving into these methods, the surface interactions (e.g., van der Waals, contact mechanics, capillary, and electrostatics) are elaborated, as a profound understanding and balancing these are a critical aspect of dry assembly. To manipulate these interactions, strategies involving different forces, e.g., mechanical‐based, electrical‐based, or laser‐induced, sometimes in conjunction with pre‐templated substrates, are employed to attain ordered colloidal structures. The utilization of the ordered structures obtained without solvents is accompanied by specific examples. Dry assembly methods can aid us in achieving more sustainable assembly processes. Overall, this Review aims to provide an easily accessible resource and inspire researchers, including novices, to broaden dry assembly horizons significantly and close the remaining knowledge gap in the physical phenomena involved in this area.

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Evolution of adhesion force behavior at the silica-HOPG interface from humidity-independent to humidity-dependent revealed on an AFM

Lai

Chen

Zhang

2023

The Journal of Adhesion

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Influences of Relative Humidity and Dwell Time on Silica/Graphene Adhesion Force of a Cone–Plane Contact

Cited by 6 publications

References 45 publications

Time Dependence of the Graphene Surface Adhesion Force of the Sphere–Plane Contact at Different Relative Humidities

Time Dependence of the Graphene Surface Adhesion Force of the Sphere–Plane Contact at Different Relative Humidities

Navigating the Landscape of Dry Assembling Ordered Particle Structures: Can Solvents Become Obsolete?

Evolution of adhesion force behavior at the silica-HOPG interface from humidity-independent to humidity-dependent revealed on an AFM

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