Anomalies of Ionic/Molecular Transport in Nano and Sub-Nano Confinement

Wang, Miao; Hou, Yaqi; Yu, Lejian; Hou, Xu

doi:10.1021/acs.nanolett.0c02999

Cited by 121 publications

(89 citation statements)

References 74 publications

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“…The role of nanoconfinement on the viscoelasticity of the materials, as well as the bond exchange rate in nanometer thin films compared to bulk materials, needs further investigation. There is a large body of work on polymer films which show deviations in physical and dynamic properties when their thickness is below a critical length scale which can vary from 2 to 200 nm 50,51 . At present, it is unknown if the dynamics or modulus are altered in the dyn-PDMS films.…”

Section: Discussionmentioning

confidence: 99%

Ultra-thin self-healing vitrimer coatings for durable hydrophobicity

et al. 2021

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Durable hydrophobic materials have attracted considerable interest in the last century. Currently, the most popular strategy to achieve hydrophobic coating durability is through the combination of a perfluoro-compound with a mechanically robust matrix to form a composite for coating protection. The matrix structure is typically large (thicker than 10 μm), difficult to scale to arbitrary materials, and incompatible with applications requiring nanoscale thickness such as heat transfer, water harvesting, and desalination. Here, we demonstrate durable hydrophobicity and superhydrophobicity with nanoscale-thick, perfluorinated compound-free polydimethylsiloxane vitrimers that are self-healing due to the exchange of network strands. The polydimethylsiloxane vitrimer thin film maintains excellent hydrophobicity and optical transparency after scratching, cutting, and indenting. We show that the polydimethylsiloxane vitrimer thin film can be deposited through scalable dip-coating on a variety of substrates. In contrast to previous work achieving thick durable hydrophobic coatings by passively stacking protective structures, this work presents a pathway to achieving ultra-thin (thinner than 100 nm) durable hydrophobic films.

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Section: Discussionmentioning

confidence: 99%

Ultra-thin self-healing vitrimer coatings for durable hydrophobicity

et al. 2021

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“…In 1970s, the concept of energy conversion system based on the electrodynamic effect was proposed by Osterle's, Burgreen's and Nakache's groups [223][224][225][226]. It was expected that new findings pave the way for the energy conversion system of micro/nano fluid devices based on the electrodynamic effect more and more [227]. However, numerous investigations have indicated that the efficiency of actual energy conversion related to the conversion system based on the electrodynamic effect is relatively low and this issue has restricted its application as power devices and so on [228,229].…”

Section: Electrokinetic Energy Conversionmentioning

confidence: 99%

Bioinspired nanochannels based on polymeric membranes

Wang

et al. 2021

Sci. China Mater.

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Bio-nanochannels in living organisms participate in the physiological activities by selectively transporting ions through cell membranes. The structure and function of biological ion channels inspire the development of artificial ion nanochannels with practical applications. The bioinspired nanochannels based on polymer materials present good mechanical stability, high-performance ion transport and designability, which have attracted much attention. In this review, we mainly focus on the fabrication and application of polymer-based biomimetic nanochannels especially in environmentally responsive biosensor and energy conversion. We firstly introduce the basic understanding of nanochannels in ion regulation and osmotic energy conversion. Then, we discuss the fabrication methods of polymer-based nanochannels and highlight their advantages compared with other materials. The practical applications of polymer-based biomimetic nanochannels, especially in energy conversion and environmentally responsive biosensor, are detailedly discussed. Finally, we summarize the unsolved problems in bioinspired nanochannels and overview the further developing direction in this field.

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“…Nanofluidics is a research field that explores the transport of fluids, gases, and ionic species at the nanometre scale. [1][2][3][4] This enables the precise regulation of transported substances within confined spaces and is especially important for high-resolution sensing, disruptive technologies targeting the water-energy nexus and macro-/biomolecular analysis. Of particular interest is the study of ion transport in nanofluidic devices.…”

Section: Introductionmentioning

confidence: 99%

Light-Driven Ion Transport in Nanofluidic Devices: Photochemical, Photoelectric, and Photothermal Effects

Xiao

Schmidt

2022

CCS Chem

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Light-driven ion transport in nanofluidic devices is a phenomenon where ions move unidirectionally by consuming optical energy, either from low concentration to high concentration or vice versa. The unidirectional ion transport driven by light offers intriguing application potential in desalination and ions separation, osmosis energy harvesting, and ionic machines benefiting from the remote noncontact light stimulus. Here, we review recent progress in nanofluidic-based light-driven ion transport systems and emphasize similarities and differences in the three underlying working principles based on photochemical, photoelectric, and photothermal effects. The current challenges and future developments of light-driven ion transport in nanofluidic devices are discussed. We believed that this article encourages further innovation in this exciting and emerging research field.

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Anomalies of Ionic/Molecular Transport in Nano and Sub-Nano Confinement

Cited by 121 publications

References 74 publications

Ultra-thin self-healing vitrimer coatings for durable hydrophobicity

Ultra-thin self-healing vitrimer coatings for durable hydrophobicity

Bioinspired nanochannels based on polymeric membranes

Light-Driven Ion Transport in Nanofluidic Devices: Photochemical, Photoelectric, and Photothermal Effects

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