Submicron Metal 3D Printing by Ultrafast Laser Heating and Induced Ligand Transformation of Nanocrystals

Podder, Chinmoy; Gong, Xiangtao; Yu, Xiaowei; Shou, Wan; Pan, Heng

doi:10.1021/acsami.1c10775

Cited by 5 publications

(5 citation statements)

References 67 publications

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“…The current work suggests that it is possible to control the shapes of laser-induced nanowelded microstructures of metallic nanoparticles using light at different wavelengths. This capability of the light-based control of nanowelded shapes is expected to be convenient for various applications, such as conductive bonding [15,76,77] and nanoparticle-based metal printing [78][79][80]. Our study is expected to provide a better understanding and control of such applications.…”

Section: Discussionmentioning

confidence: 94%

The Shape Modulation of Laser-Induced Nanowelded Microstructures Using Two Colors

Rogers,

Niyonshuti,

et al. 2023

Colloids and Interfaces

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The light-based nanowelding of metallic nanoparticles is of particular interest because it provides convenient and controlled means for the conversion of nanoparticles into microstructures and the fabrication of nanodevices. In this study, we investigated the wavelength dependence of laser-induced nanowelded shapes of silver nanoparticles (AgNPs). We observed that the nanowelded microstructures illuminated with only a 405 nm laser were more branched than those formed via illumination using both the 405 nm and 532 nm lasers. We quantified this observation by two compactness descriptors and examined the dependence of the power of the 532 nm laser. More importantly, to understand the experimental observations, we formulated and tested a hypothesis by calculating the wavelength-dependent electric field enhancement due to the surface plasmon resonance of the AgNPs and nanowelded microstructures when illuminated with lights at the two wavelengths. Based on the different patterns of hot spots for welding AgNPs from these calculations, numerical simulations successfully reproduced the different shapes of nanowelded microstructures, supporting our hypothesis. This work suggests the possibility of light-based control of the shapes of laser-induced nanowelded microstructures of metallic nanoparticles. This work is expected to facilitate the development of broader applications using the nanowelding of metallic nanoparticles.

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Section: Discussionmentioning

confidence: 94%

The Shape Modulation of Laser-Induced Nanowelded Microstructures Using Two Colors

Rogers,

Niyonshuti,

et al. 2023

Colloids and Interfaces

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“…The development of polymer‐free printing technique is critically important, while it requires new printing mechanisms beyond photopolymerization. [ 18,44 ] In this section, we will discuss the cutting‐edge polymer‐free laser nanoprinting techniques for manufacturing of functional materials with high purity and quality.…”

Section: Laser‐based Printing Techniquesmentioning

confidence: 99%

“…[ 17 ] In spite of its high resolution and geometric versatility in 3D printing, TPP is limited to several photocurable organic materials, while the 3D laser printing of functional materials beyond polymers remains challenging. [ 18 ] As shown in Figure , the key to overcoming this technical challenge is to design the feedstock which are composed of functional components (e.g., ions, precursors, or functional nanomaterials) and make them responsive to the incident laser. During laser scanning, the photochemical reaction at the laser spot leads to on‐site production or organization of the functional materials into diverse 3D geometries.…”

Section: Introductionmentioning

confidence: 99%

3D Laser Nanoprinting of Functional Materials

Liu

Hou

Lin

et al. 2023

Adv Funct Materials

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Abstract3D laser nanoprinting represents a revolutionary manufacturing approach as it allows maskless fabrication of 3D nanostructures at a resolution beyond the optical diffraction limit. Specifically, it endows the printed structures novel physical, chemical, or mechanical properties not observed at macroscopic scale. However, 3D laser nanoprinting typically relies on the photopolymerization process, indicating its limitation on the printable materials and functionalities. The capability to print diverse functional materials beyond polymer will enable a lot of new device applications in nanophotonics, microelectronics, and so on. One of the strategies is to use the 3D‐printed polymer structures as skeletons for functional material deposition, while another is to mix the functional components with the photocurable molecules and print the nanocomposites. More recently, several laser nanoprinting techniques beyond photopolymerization are also developed. In this review, the cutting‐edge technical innovation is summarized and a couple of examples are highlighted showing exciting applications of the printed structures in magnetic microrobots, photonics, and optoelectronics. Finally, the vision for existing challenges and future development in this field is shared.

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“…On the other hand, NP can be selectively transferred from the donor substrate to the acceptor substrate using a pulsed laser [ 86 , 87 , 88 ], which is applicable even to arbitrary 3D structures [ 89 ]. It has also been shown recently that ultrafast laser heating enables direct 3D assembly and fusion of nanoparticles to create metallic 3D structure at submicron features through ligand transformation [ 90 ].…”

Section: Experimental Schemesmentioning

confidence: 99%

Direct Writing of Functional Layer by Selective Laser Sintering of Nanoparticles for Emerging Applications: A Review

et al. 2022

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Selective laser sintering of nanoparticles enables the direct and rapid formation of a functional layer even on heat-sensitive flexible and stretchable substrates, and is rising as a pioneering fabrication technology for future-oriented applications. To date, laser sintering has been successfully applied to various target nanomaterials including a wide range of metal and metal-oxide nanoparticles, and extensive investigation of relevant experimental schemes have not only reduced the minimum feature size but also have further expanded the scalability of the process. In the beginning, the selective laser sintering process was regarded as an alternative method to conventional manufacturing processes, but recent studies have shown that the unique characteristics of the laser-sintered layer may improve device performance or even enable novel functionalities which were not achievable using conventional fabrication techniques. In this regard, we summarize the current developmental status of the selective laser sintering technique for nanoparticles, affording special attention to recent emerging applications that adopt the laser sintering scheme.

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Submicron Metal 3D Printing by Ultrafast Laser Heating and Induced Ligand Transformation of Nanocrystals

Cited by 5 publications

References 67 publications

The Shape Modulation of Laser-Induced Nanowelded Microstructures Using Two Colors

The Shape Modulation of Laser-Induced Nanowelded Microstructures Using Two Colors

3D Laser Nanoprinting of Functional Materials

Direct Writing of Functional Layer by Selective Laser Sintering of Nanoparticles for Emerging Applications: A Review

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