Self-assembly, alignment, and patterning of metal nanowires

Chen, Ying; Liang, Tianwei; Chen, Lei; Chen, Yaofei; Yang, Bo‐Ru; Luo, Yunhan; Liu, Gui-Shi

doi:10.1039/d2nh00313a

Cited by 35 publications

(18 citation statements)

References 406 publications

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“…49 When the viscous ink is extruded from the needle and contacts the moving substrate, the 1D AgNWs suspended in the ink are subjected to asymmetric torque owing to the shearing stress, which forces the NWs to rotate and align lengthwise along the printing direction. 50,51 Figure 2g illustrates that the alignment order S improves as V* and Z* values increase, which could be attributed to the increasing in shear stress. By adjusting the printing parameters V* and Z*, it is feasible to achieve S values even greater than 0.8.…”

Section: ■ Results and Discussionmentioning

confidence: 94%

“…The alignment of AgNWs was characterized by measuring the distribution of the relative angles (θ) of AgNWs with respect to the length axis of the printed lines (as shown in Figure S7), and the order parameter S was calculated using the equation S = ⟨2 cos 2 θ – 1⟩ . When the viscous ink is extruded from the needle and contacts the moving substrate, the 1D AgNWs suspended in the ink are subjected to asymmetric torque owing to the shearing stress, which forces the NWs to rotate and align lengthwise along the printing direction. , Figure g illustrates that the alignment order S improves as V * and Z * values increase, which could be attributed to the increasing in shear stress. By adjusting the printing parameters V * and Z *, it is feasible to achieve S values even greater than 0.8.…”

Section: Resultsmentioning

confidence: 99%

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Direct Writing of Silver Nanowire Patterns with Line Width down to 50 μm and Ultrahigh Conductivity

Kong

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Direct writing of one-dimensional nanomaterials with large aspect ratios into customized, highly conductive, and high-resolution patterns is a challenging task. In this work, thin silver nanowires (AgNWs) with a length-to-diameter ratio of 730 are employed as a representative example to demonstrate a potent direct ink writing (DIW) strategy, in which aqueous inks using a natural polymer, sodium alginate, as the thickening agent can be easily patterned with arbitrary geometries and controllable structural features on a variety of planar substrates. With the aid of a quick spray-and-dry postprinting treatment at room temperature, the electrical conductivity and substrate adhesion of the written AgNWs-patterns improve simultaneously. This simple, environment benign, and low-temperature DIW strategy is effective for depositing AgNWs into patterns that are high-resolution (with line width down to 50 μm), highly conductive (up to 1.26 × 10 5 S/ cm), and mechanically robust and have a large alignment order of NWs, regardless of the substrate's hardness, smoothness, and hydrophilicity. Soft electroadhesion grippers utilizing as-manufactured interdigitated AgNWs-electrodes exhibit an increased shear adhesion force of up to 15.5 kPa at a driving voltage of 3 kV, indicating the strategy is very promising for the decentralized and customized manufacturing of soft electrodes for future soft electronics and robotics.

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Section: ■ Results and Discussionmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Direct Writing of Silver Nanowire Patterns with Line Width down to 50 μm and Ultrahigh Conductivity

Kong

Wang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…However, the length and diameter of the Co 3 O 4 nanowires vary widely, and the overall morphology of the nanowires is also contrary in related studies [ 15 , 16 , 17 , 18 ]. Therefore, the relationship between the aspect ratio of Co 3 O 4 nanowires and the capacity performance still needs to be comprehensively studied [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Cobalt Oxide (CoOx) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors

Zhuo

et al. 2023

Nanomaterials

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Cobalt oxide (CoOx) nanowires have been broadly explored as advanced pseudocapacitive materials owing to their impressive theoretical gravimetric capacity. However, the traditional method of compositing with conductive nanoparticles to improve their poor conductivity will unpredictably lead to a decrease in actual capacity. The amelioration of the aspect ratio of the CoOx nanowires may affect the pathway of electron conduction and ion diffusion, thereby improving the electrochemical performances. Here, CoOx nanowires with various aspect ratios were synthesized by controlling hydrothermal temperature, and the CoOx electrodes achieve a high gravimetric specific capacity (1424.8 C g−1) and rate performance (38% retention at 100 A g−1 compared to 1 A g−1). Hybrid supercapacitors (HSCs) based on activated carbon anode reach an exceptional specific energy of 61.8 Wh kg−1 and excellent cyclic performance (92.72% retention, 5000 cycles at 5 A g−1). The CoOx nanowires exhibit great promise as a favorable cathode material in the field of high-performance supercapacitors (SCs).

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“…They are characterized by simple synthesis, high stability, larger specific area, good carrier transmission, and enhanced photocatalytic efficiency. Nanowires show high electrical conductivity, good optical properties, high flexibility, and a low cost of synthesis [ 42 ]. For these reasons, they have been used in the realization of various transparent, flexible, and stretchable devices, such as touch screens, smart windows, and solar cells.…”

Section: Nanomaterials For Sensingmentioning

confidence: 99%

Nanomaterials for Cortisol Sensing

Sfrazzetto

Santonocito

2022

Nanomaterials

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Space represents one of the most dangerous environments for humans, which can be affected by high stress levels. This can lead to severe physiological problems, such as headaches, gastrointestinal disorders, anxiety, hypertension, depression, and coronary heart diseases. During a stress condition, the human body produces specific hormones, such as dopamine, adrenaline, noradrenaline, and cortisol. In particular, the control of cortisol levels can be related to the stress level of an astronaut, particularly during a long-term space mission. The common analytical methods (HPLC, GC-MS) cannot be used in an extreme environment, such as a space station, due to the steric hindrance of the instruments and the absence of gravity. For these reasons, the development of smart sensing devices with a facile and fast analytical protocol can be extremely useful for space applications. This review summarizes the recent (from 2011) miniaturized sensoristic devices based on nanomaterials (gold and carbon nanoparticles, nanotubes, nanowires, nano-electrodes), which allow rapid and real-time analyses of cortisol levels in biological samples (such as saliva, urine, sweat, and plasma), to monitor the health conditions of humans under extreme stress conditions.

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Self-assembly, alignment, and patterning of metal nanowires

Abstract: Armed with merits of one-dimensional nanostructures (flexibility, high aspect ratio, anisotropy) and metals (high conductivity, plasmonic properties, and catalytic activity), metal nanowires (MNWs) have stood out as a new class...

Cited by 35 publications

References 406 publications

Direct Writing of Silver Nanowire Patterns with Line Width down to 50 μm and Ultrahigh Conductivity

Direct Writing of Silver Nanowire Patterns with Line Width down to 50 μm and Ultrahigh Conductivity

Mesoporous Cobalt Oxide (CoOx) Nanowires with Different Aspect Ratios for High Performance Hybrid Supercapacitors

Nanomaterials for Cortisol Sensing

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