Plasmonically enhanced 3D laser lithography for high-throughput nanoprecision fabrication

Jonušauskas, Linas; Varapnickas, Simonas; Rimšelis, Gabrielius; Malinauskas, Mangirdas

doi:10.1117/12.2249595

Cited by 3 publications

(3 citation statements)

References 42 publications

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“…Especially the stereolithographic technique, which is based on optical excitations, can be strongly affected by nanomaterials since the integrated materials can interact with the light source by absorption or scattering. Jonusauskas et al showed this in plasmon-assisted 3D microstructuring of gold-doped polymers. , The printed linewidth strongly depended on the concentration of Au NPs. Increasing the Au NP concentration increased the printed feature size, whereas for small concentrations the linewidth decreased.…”

Section: Introductionmentioning

confidence: 93%

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Plasmonic and Semiconductor Nanoparticles Interfere with Stereolithographic 3D Printing

Momper

Landeta

Yang

et al. 2020

ACS Appl. Mater. Interfaces

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Two-photon polymerization stereolithographic three-dimensional (3D) printing is used for manufacturing a variety of structures ranging from microdevices to refractive optics. Incorporation of nanoparticles in 3D printing offers huge potential to create even more functional nanocomposite structures. However, this is difficult to achieve since the agglomeration of the nanoparticles can occur. Agglomeration not only leads to an uneven distribution of nanoparticles in the photoresin but also induces scattering of the excitation beam and altered absorption profiles due to interparticle coupling. Thus, it is crucial to ensure that the nanoparticles do not agglomerate during any stage of the process. To achieve noninteracting and well-dispersed nanoparticles on the 3D printing process, first, the stabilization of nanoparticles in the 3D printing resin is indispensable. We achieve this by functionalizing the nanoparticles with surface-bound ligands that are chemically similar to the photoresin that allows increased nanoparticle loadings without inducing agglomeration. By systematically studying the effect of different nanomaterials (Au nanoparticles, Ag nanoparticles, and CdSe/CdZnS nanoplatelets) in the resin on the 3D printing process, we observe that both, material-specific (absorption profiles) and unspecific (radical quenching at nanoparticle surfaces) pathways co-exist by which the photopolymerization procedure is altered. This can be exploited to increase the printing resolution leading to a reduction of the minimum feature size.

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Section: Introductionmentioning

confidence: 93%

“…mers. 14,15 The printed linewidth strongly depended on the concentration of Au NPs. Increasing the Au NP concentration increased the printed feature size, whereas for small concentrations the linewidth decreased.…”

Section: ■ Introductionmentioning

confidence: 99%

Plasmonic and Semiconductor Nanoparticles Interfere with Stereolithographic 3D Printing

Momper

Landeta

Yang

et al. 2020

ACS Appl. Mater. Interfaces

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“…DLW has proven to be efficient in the production of gold nanoparticle-reinforced hybrid SZ2080 and hydrogelic PEG-DA-700 laser processable polymers. The method is seen to produce freely movable microstructures made of mechanical metamaterials and exhibited NPRs of as low as -0.44 [140]. Three-dimensional origami structures with appreciable foldability were fabricated using DLW [141].…”

Section: Dlwmentioning

confidence: 99%

On the application of additive manufacturing methods for auxetic structures: a review

2021

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Auxetic structures are a special class of structural components that exhibit a negative Poisson's ratio (NPR) because of their constituent materials, internal microstructure, or structural geometry. To realize such structures, specialized manufacturing processes are required to achieve a dimensional accuracy, reduction of material wastage, and a quicker fabrication. Hence, additive manufacturing (AM) techniques play a pivotal role in this context. AM is a layer-wise manufacturing process and builds the structure as per the designed geometry with appreciable precision and accuracy. Hence, it is extremely beneficial to fabricate auxetic structures using AM, which is otherwise a tedious and expensive task. In this study, a detailed discussion of the various AM techniques used in the fabrication of auxetic structures is presented. The advancements and advantages put forward by the AM domain have offered a plethora of opportunities for the fabrication and development of unconventional structures. Therefore, the authors have attempted to provide a meaningful encapsulation and a detailed discussion of the most recent of such advancements pertaining to auxetic structures. The article opens with a brief history of the growth of auxetic materials and later auxetic structures. Subsequently, discussions centering on the different AM techniques employed for the realization of auxetic structures are conducted. The basic principle, advantages, and disadvantages of these processes are discussed to provide an in-depth understanding of the current level of research. Furthermore, the performance of some of the prominent auxetic structures realized through these methods is discussed to compare their benefits and shortcomings. In addition, the influences of geometric and process parameters on such structures are evaluated through a comprehensive review to assess their feasibility for the latermentioned applications. Finally, valuable insights into the applications, limitations, and prospects of AM for auxetic structures are provided to enable the readers to gauge the vitality of such manufacturing as a production method.

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3D printing by stereolithography using thermal initiators

Kam,

Rulf,

Reisinger

et al. 2024

Nat Commun

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Additive manufacturing technologies based on stereolithography rely on initiating spatial photopolymerization by using photoinitiators activated by UV-visible light. Many applications requiring printing in water are limited since water-soluble photoinitiators are scarce, and their price is skyrocketing. On the contrary, thermal initiators are widely used in the chemical industry for polymerization processes due to their low cost and simplicity of initiation by heat at low temperatures. However, such initiators were never used in 3D printing technologies, such as vat photopolymerization stereolithography, since localizing the heat at specific printing voxels is impossible. Here we propose using a thermal initiator for 3D printing for localized polymerization processes by near-infrared and visible light irradiation without conventional photoinitiators. This is enabled by using gold nanorods or silver nanoparticles at very low concentrations as photothermal converters in aqueous and non-aqueous mediums. Our proof of concept demonstrates the fabrication of hydrogel and polymeric objects using stereolithography-based 3D printers, vat photopolymerization, and two-photon printing.

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Plasmonically enhanced 3D laser lithography for high-throughput nanoprecision fabrication

Cited by 3 publications

References 42 publications

Plasmonic and Semiconductor Nanoparticles Interfere with Stereolithographic 3D Printing

Plasmonic and Semiconductor Nanoparticles Interfere with Stereolithographic 3D Printing

On the application of additive manufacturing methods for auxetic structures: a review

3D printing by stereolithography using thermal initiators

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