A black phosphorus nanoconveyor belt system

Hua, Anping; Zhao, Junhua; Wei, Ning

doi:10.1063/1.5133149

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…Recently, BP has been widely studied by researchers at home and abroad as a novel 2D material [67,68].…”

Section: Bp Materials As Oil-based Lubricant Additivesmentioning

confidence: 99%

A brief review of tribological properties for black phosphorus

Lv,

Wang,

et al. 2023

Friction

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Black phosphorus (BP) is a new class of two-dimensional (2D) layered material, which shows the unanticipated characteristics in many aspects including electronics, transistors, sensors, energy storage, batteries, photocatalysis, and other applications due to its high charge carrier mobility, tunable direct bandgap, and unique in-plane anisotropic structure. In addition, BP has drawn tremendous attention in the field of tribology due to the low shear strength, the layered structure, and the weak connected force between the layers by van der Waals interaction. In recent years, many significant progresses have been made in experimental studies on BP materials as solid lubricants or lubrication additives. This work offers a review of researching regarding the tribological properties of BP. Moreover, the lubrication mechanisms of BP as the lubrication additive including the formation of the tribo-film, micro-bearing effect, and self-repair performance are also summarized. Finally, the current challenges and prospects of BP material as lubricant are proposed.

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“…Recently, BP has been widely studied by researchers at home and abroad as a novel 2D material [67,68].…”

Section: Bp Materials As Oil-based Lubricant Additivesmentioning

confidence: 99%

A brief review of tribological properties for black phosphorus

Lv,

Wang,

et al. 2023

Friction

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“…In particular, the friction-related phenomena attract great interest in science and technological applications. − Nanodevices in static or dynamic conditions experience nanotribological effects leading to major challenges for the proper design, control, and reliability of, for instance, nanoelectromechanical systems . Hence, the friction behavior of wheels and belts in nanoconveyor belt systems may limit the mechanical transmission at the nanoscale . This behavior is emphasized by the high area/volume ratio, where surface phenomena control the nanosystem properties and performance.…”

Section: Introductionmentioning

confidence: 99%

“…1 Hence, the friction behavior of wheels and belts in nanoconveyor belt systems may limit the mechanical transmission at the nanoscale. 13 This behavior is emphasized by the high area/volume ratio, where surface phenomena control the nanosystem properties and performance. The design of such nanodevices is so far based on the premise that friction cannot be actively controlled.…”

Section: ■ Introductionmentioning

confidence: 99%

Phototribology: Control of Friction by Light

Perotti

Cammarata

Cemin

et al. 2021

ACS Appl. Mater. Interfaces

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In dry sliding, the coefficient of friction depends on the material pair and contact conditions. If the material and operating conditions remain unchanged, the coefficient of friction is constant. Obviously, we can tune friction by surface treatments, but it is a nonreversible process. Here, we report active control of friction forces on TiO2 thin films under UV light. It is reversible and stable and can be tuned/controlled with the light wavelength. The analysis of atomic force microscopy signals by wavelet spectrograms reveals different mechanisms acting in the darkness and under UV. Ab initio simulations on UV light-exposed TiO2 show a lower atomic orbital overlapping on the surface, which leads to a friction reduction of up to 60%. We suggest that photocontrol of friction is due to the modification of atomic orbital interactions from both surfaces at the sliding interface.

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“…Two-dimensional (2D) materials have attracted tremendous interest due to a myriad of superior physical and chemical properties that herald enhanced performance of devices and their atomic thicknesses enabling continued device minimization. − Recent upsurge of research activities in flexible electronics raises a critical need of exploring 2D materials with high bendability, stretchability, and conformability. − A number of experiments and theory have marked graphene as an ideal candidate for its excellent mechanical performance combined with exceptional electronic properties. − However, graphene is a brittle material with an ideal breaking strain of 20–26% and experimentally measured values of only ∼6%. − Among various 2D materials, borophene stands out as the thinnest metal with structural anisotropy, , mechanical compliance, , and optical transparency, making it a promising candidate for next-generation electronics. − Unlike graphene commonly with a well-defined honeycomb lattice, borophene is highly polymorphic with numerous lattices that hold similar stability yet are set apart by the pattern of hollow hexagons (HHs) in a referenced triangular grid. , The structure of borophene can be characterized by the HH concentration, defined as v = m / N , where m is the number of HHs in a unit cell of N triangular lattice sites. The polymorphism serves as the basis on which borophene exhibits high ductility enabled by structural phase transition under tension .…”

Section: Introductionmentioning

confidence: 99%

Structures, Mechanics, and Electronics of Borophanes

Zhang

Guo

2021

J. Phys. Chem. C

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Motivated by the very recent experimental synthesis of hydrogenated borophenesborophanes, we perform a systematic first-principles study of structures, mechanics, and electronics of freestanding hydrogenated v 1/6 sheets. We identify two distinctly stable borophane structures at 20% hydrogen coverage and two at 40% hydrogen coverage. Despite significant structural modification by formed B−H single bonds and three-center−two-electron B− H−B bridge bonds, borophanes inherit high in-plane elasticity and structural flexibility from pristine borophenes. Yet, the structural buckling of borophanes induced by hydrogenation gives rise to peculiar mechanical behaviors, such as nearly zero Poisson's ratios and extremely low bending stiffness of 0.37 eV, compared to 1.46 eV of graphene. Borophanes exhibit similar structural fluxionality to the v 1/6 sheet that allows for structural phase transitions under tension as well as exotic fracture behaviors at critical strains. Furthermore, all borophanes possess modified work functions to form devisible Volta potentials across atomically smooth interfaces with the v 1/6 sheet. Meanwhile, most borophanes show attenuated anisotropy of electronic states and host Dirac fermions. These results illustrate the concept of borophene as a robust atomic-scale scaffold for realizing tailored mechanical and electronic properties by chemical modification and suggest the potential of utilizing borophanes for nanoelectronic devices.

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A black phosphorus nanoconveyor belt system

Cited by 4 publications

References 31 publications

A brief review of tribological properties for black phosphorus

A brief review of tribological properties for black phosphorus

Phototribology: Control of Friction by Light

Structures, Mechanics, and Electronics of Borophanes

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