Mask‐Free Patterning of High‐Conductivity Metal Nanowires in Open Air by Spatially Modulated Femtosecond Laser Pulses

Wang, Andong; Jiang, Lan; Li, Xiaowei; Liu, Yang; Dong, Xian‐Zi; Qu, Liangti; Duan, Xuan‐Ming; Lu, Yongfeng

doi:10.1002/adma.201503289

Cited by 75 publications

(45 citation statements)

References 35 publications

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“…Recently, good synthetic performance and universality in materials make the laser sintering become a rapid and widely-used prototype technique. At present, laser sintering has been successfully industrialized for a pressure-less, mask-less, and scalable manufacturing route [15,16], which provides versatile material synthesis by forming three-dimensional net structure in a single operation. The ceramics materials synthesized by laser sintering have brought various applications with vast commercial values.…”

Section: Introductionmentioning

confidence: 99%

Thermal barrier materials of Yb₂O₃-ZrO₂ system synthesized by laser excitation

He¹,

Huang²,

Hu³

et al. 2020

Mater. Res. Express

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A low-cost and minimal-processing-step method is demonstrated to synthesize Yb 2 O 3 -ZrO 2 system by laser excitation catalyzed solid-state reaction. With 980 nm CW laser irradiating, near-resonant excitation of Yb 3+ ions can obviously enhance solid state reaction. As the molar content of Yb 2 O 3 rises from 12.5% to 50%, the lattice parameter of Yb 2 O 3 -ZrO 2 ceramic increases distinctly. Among them, high crystal quality of Yb 2 Zr 2 O 7 and Yb 0.2 Zr 0.8 O 1.9 are synthesized at the laser power of 400 W for 10 s. Two obvious Raman peaks of Yb 2 Zr 2 O 7 represent increased Raman activity. X-ray photoelectron spectroscopy (XPS) and Impedance spectroscopy demonstrate the huge amount of the oxygen vacancies in Yb 0.2 Zr 0.8 O 1.9 . Yb 2 Zr 2 O 7 shows lowest thermal conductivity among all the ceramics studied, within the range of 0.497-0.730 W mK −1 from 25°C to 1200°C, which indicates a promising thermal barrier material.

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Section: Introductionmentioning

confidence: 99%

Thermal barrier materials of Yb₂O₃-ZrO₂ system synthesized by laser excitation

He¹,

Huang²,

Hu³

et al. 2020

Mater. Res. Express

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show abstract

“…This method arises as a low‐cost approach with minimal processing steps. Vacuum‐free, mask‐less, and scalable manufacturing of different structures has been successfully demonstrated with laser sintering . However, high laser power density is always required in this process, limiting its further development.…”

Section: Introductionmentioning

confidence: 99%

Laser excitation‐activated self‐propagating sintering of NaYbF₄:Pr³⁺/Gd³⁺ white light microcrystal phosphors

Jiang

Shen

et al. 2018

J Am Ceram Soc

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We demonstrate that self‐propagating sintering reaction could be activated and dramatically enhanced by laser excitation of ion dopants in the solid‐state reactants. Near‐resonant laser absorption and subsequent nonradiative decays make the solid‐state reactants be sintered efficiently while ionic excitations catalyze self‐propagating solid‐state reactions. As a prototype demo, we synthesized white light upconversion phosphors NaYbF4:Pr3+/Gd3+. A continuous‐wave laser at 980 nm was used to populate Yb3+ ions in YbF3 to excited level, which react with NaF to preform NaYbF4 nuclei. The preformed nuclei enhanced laser excitation and energy transfer to those ions that could not be directly excited by the pump laser and thus enabled self‐propagating solid‐state sintering synthesis of NaYbF4 microcrystals at quite low laser powers. Laser excitation of Yb3+ ions could also benefit facile rare‐earth ion doping through activated self‐propagating reactions. Gd3+ and Pr3+ ions were doped in NaYbF4 by simply adding Gd3+ and Pr3+ ionic oxides or fluorides in the raw materials. In addition, Gd3+ ions doping in F− anions ambient could transform the NaYbF4 microcrystal phase from cubic to hexagonal and tune upconversion photoluminescence. This synthetic method can be widely applied to synthesize many other solid‐state compounds, perovskite solar cells, photocatalysts, solid oxide fuel cells, and so forth.

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“…Novel techniques have also been developed in order to achieve higher resolution and control in nanowire fabrication. For example, Wang et al added a spatial light modulator in the micromachining setup to overcome the diffraction limit and produce gold wires at nanoscale [127]. The comparison between the laser-ablated and conventional photolithography IDEs was evaluated using electrical impedance spectroscopy [128].…”

Section: Gold Ablation For Designing Microelectrodesmentioning

confidence: 99%

Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces

Corrêa

Almeida

et al. 2017

Photonics

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Abstract:The current demand for fabricating optical and photonic devices displaying high performance, using low-cost and time-saving methods, prompts femtosecond (fs)-laser processing as a promising methodology. High and low repetition femtosecond lasers enable surface and/or bulk modification of distinct materials, which can be used for applications ranging from optical waveguides to superhydrophobic surfaces. Herein, some fundamental aspects of fs-laser processing of materials, as well as the basics of their most common experimental apparatuses, are introduced. A survey of results on polymer fs-laser processing, resulting in 3D waveguides, electroluminescent structures and active hybrid-microstructures for luminescence or biological microenvironments is presented. Similarly, results of fs-laser processing on glasses, gold and silicon to produce waveguides containing metallic nanoparticles, analytical chemical sensors and surface with modified features, respectively, are also described. The complexity of fs-laser micromachining involves precise control of material properties, pushing ultrafast laser processing as an advanced technique for micro/nano devices.

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Mask‐Free Patterning of High‐Conductivity Metal Nanowires in Open Air by Spatially Modulated Femtosecond Laser Pulses

Cited by 75 publications

References 35 publications

Thermal barrier materials of Yb₂O₃-ZrO₂ system synthesized by laser excitation

Thermal barrier materials of Yb₂O₃-ZrO₂ system synthesized by laser excitation

Laser excitation‐activated self‐propagating sintering of NaYbF₄:Pr³⁺/Gd³⁺ white light microcrystal phosphors

Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces

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Mask‐Free Patterning of High‐Conductivity Metal Nanowires in Open Air by Spatially Modulated Femtosecond Laser Pulses

Cited by 75 publications

References 35 publications

Thermal barrier materials of Yb2O3-ZrO2 system synthesized by laser excitation

Thermal barrier materials of Yb2O3-ZrO2 system synthesized by laser excitation

Laser excitation‐activated self‐propagating sintering of NaYbF4:Pr3+/Gd3+ white light microcrystal phosphors

Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces

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Product

Resources

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Thermal barrier materials of Yb₂O₃-ZrO₂ system synthesized by laser excitation

Thermal barrier materials of Yb₂O₃-ZrO₂ system synthesized by laser excitation

Laser excitation‐activated self‐propagating sintering of NaYbF₄:Pr³⁺/Gd³⁺ white light microcrystal phosphors