Recent progress on electrohydrodynamic nanowire printing

Xu, Wenlong; Zhang, Shuo

doi:10.1007/s40843-019-9583-5

Cited by 12 publications

(8 citation statements)

References 140 publications

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“…Nowadays, EHD printing has become a promising approach for the fabrication of the nanowire-based devices, as it is capable of printing ultrafine nanowires in high-precision patterns. − Our recent work demonstrated the feasibility of printing AgNWs with high resolution and high conductivity on a variety of substrates, including polydimethylsiloxane (PDMS), using EHD printing. However, in general, extending printed electronics from rigid or flexible substrates to stretchable substrates faces challenges from the interaction between functional inks and substrates .…”

Section: Introductionmentioning

confidence: 99%

Achieving High-Resolution Electrohydrodynamic Printing of Nanowires on Elastomeric Substrates through Surface Modification

Ren

Liu

Song

et al. 2020

ACS Appl. Electron. Mater.

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Stretchable electronics based on nanomaterials has received much interest recently. However, it is challenging to print 1D nanomaterials (e.g., nanowires) with high resolution on stretchable elastomeric substrates. Electrohydrodynamic (EHD) printing has been used to print 1D nanomaterials such as silver nanowires (AgNWs) on stretchable substrates, but the resolution and electric conductivity of the printed patterns are typically low because of the poor wettability of the ink on the surface of the substrates. This paper reports a systematic study of two surface modification methods, UV–ozone treatment and dopamine coating, to modify the surface of polydimethylsiloxane (PDMS), which enables reliable and tunable EHD printing of AgNWs. The dynamic contact angle and the contact angle hysteresis were systematically studied to understand and evaluate the two surface modification methods. This work further investigates the hydrophobic stability of the two surface modification methods that is of critical relevance to the EHD printing, as it determines the shelf life of the treated samples. The effects of treatment dose and aging on the EHD printing performances, such as resolution and conductivity, were studied to find the feasible ranges of the parameters for the surface treatment and printing process. The surface modification methods along with the proper printing conditions can be selected to tailor and optimize the printing performance. A wearable electronic patch with a fractal pattern of AgNWs is printed on the modified PDMS substrate to demonstrate the potential of the reported surface modification for reliable EHD printing of AgNWs for stretchable devices.

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Section: Introductionmentioning

confidence: 99%

Achieving High-Resolution Electrohydrodynamic Printing of Nanowires on Elastomeric Substrates through Surface Modification

Ren

Liu

Song

et al. 2020

ACS Appl. Electron. Mater.

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“…The intermittent nature of such energy sources necessitates the development of suitable methods for energy conversion and storage. Electrochemical water splitting is one such storage and conversion technique that is becoming more prominent . The electrochemical water splitting process involves two half‐cell reactions: the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER).…”

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confidence: 99%

Antiferromagnetic Inverse Spinel Oxide LiCoVO₄ with Spin‐Polarized Channels for Water Oxidation

et al. 2020

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Exploring highly efficient catalysts for the oxygen evolution reaction (OER) is essential for water electrolysis. Cost‐effective transition‐metal oxides with reasonable activity are raising attention. Recently, OER reactants' and products' differing spin configurations have been thought to cause slow reaction kinetics. Catalysts with magnetically polarized channels could selectively remove electrons with opposite magnetic moment and conserve overall spin during OER, enhancing triplet state oxygen molecule evolution. Herein, antiferromagnetic inverse spinel oxide LiCoVO4 is found to contain d7 Co2+ ions that can be stabilized under active octahedral sites, possessing high spin states S = 3/2 (t2g5eg2). With high spin configuration, each Co2+ ion has an ideal magnetic moment of 3 µB, allowing the edge‐shared Co2+ octahedra in spinel to be magnetically polarized. Density functional theory simulation results show that the layered antiferromagnetic LiCoVO4 studied contains magnetically polarized channels. The average magnetic moment (µave) per transition‐metal atom in the spin conduction channel is around 2.66 µB. Such channels are able to enhance the selective removal of spin‐oriented electrons from the reactants during the OER, which facilitates the accumulation of appropriate magnetic moments for triplet oxygen molecule evolution. In addition, the LiCoVO4 reported has been identified as an oxide catalyst with excellent OER activity.

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“…Generally, the size of the area covered with the electrospun fibers decreases with the decreasing nozzle-to-substrate distance, which is accompanied by a reduction of the applied potential to preserve the electric field and prevent the onset of electrical discharges. The near-field electrospinning (NFES) method, also known as the electrohydrodynamic direct-writing (EDW) method, exploits this behavior [181][182][183][184][185][186]. The working principle of EDW is similar to that of the traditional electrospinning but with some distinctive features, namely the small nozzle diameter (<50 μm), the low applied voltage (<1 kV), the short distance between the nozzle and the substrate (0.5-5 mm), and the use of a moving nozzle and/or substrate, which facilitates position-tunable alignment and on-demand patterning of fibers on the substrate.…”

Section: Patterning Methodsmentioning

confidence: 99%

One-Dimensional Metal Oxide Nanostructures for Chemical Sensors

Hontañón¹,

Vallejos²

2022

21st Century Nanostructured Materials - Physics, Chemistry, Classification, and Emerging Applications in Industry, Biomedicine,

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The fabrication of chemical sensors based on one-dimensional (1D) metal oxide semiconductor (MOS) nanostructures with tailored geometries has rapidly advanced in the last two decades. Chemical sensitive 1D MOS nanostructures are usually configured as resistors whose conduction is altered by a charge-transfer process or as field-effect transistors (FET) whose properties are controlled by applying appropriate potentials to the gate. This chapter reviews the state-of-the-art research on chemical sensors based on 1D MOS nanostructures of the resistive and FET types. The chapter begins with a survey of the MOS and their 1D nanostructures with the greatest potential for use in the next generation of chemical sensors, which will be of very small size, low-power consumption, low-cost, and superior sensing performance compared to present chemical sensors on the market. There follows a description of the 1D MOS nanostructures, including composite and hybrid structures, and their synthesis techniques. And subsequently a presentation of the architectures of the current resistive and FET sensors, and the methods to integrate the 1D MOS nanostructures into them on a large scale and in a cost-effective manner. The chapter concludes with an outlook of the challenges facing the chemical sensors based on 1D MOS nanostructures if their massive use in sensor networks becomes a reality.

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Recent progress on electrohydrodynamic nanowire printing

Cited by 12 publications

References 140 publications

Achieving High-Resolution Electrohydrodynamic Printing of Nanowires on Elastomeric Substrates through Surface Modification

Achieving High-Resolution Electrohydrodynamic Printing of Nanowires on Elastomeric Substrates through Surface Modification

Antiferromagnetic Inverse Spinel Oxide LiCoVO₄ with Spin‐Polarized Channels for Water Oxidation

One-Dimensional Metal Oxide Nanostructures for Chemical Sensors

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Recent progress on electrohydrodynamic nanowire printing

Cited by 12 publications

References 140 publications

Achieving High-Resolution Electrohydrodynamic Printing of Nanowires on Elastomeric Substrates through Surface Modification

Achieving High-Resolution Electrohydrodynamic Printing of Nanowires on Elastomeric Substrates through Surface Modification

Antiferromagnetic Inverse Spinel Oxide LiCoVO4 with Spin‐Polarized Channels for Water Oxidation

One-Dimensional Metal Oxide Nanostructures for Chemical Sensors

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Product

Resources

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Antiferromagnetic Inverse Spinel Oxide LiCoVO₄ with Spin‐Polarized Channels for Water Oxidation