Enhanced mechanical property through high-yield fabrication process with double laser scanning method in two-photon lithography

Lee, Jisun; Park, Seong Jun; Han, Seung Chul; Prabhakaran, Prem; Ha, Cheol Woo

doi:10.1016/j.matdes.2023.112389

Cited by 4 publications

(1 citation statement)

References 53 publications

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“…With the development of TPL and compatible transparent resins, optical components with sub-100 nm resolution and any arbitrary geometries could be realized, which is conducive to significant developments in several fields of optics. Moreover, the ability of the process to fabricate on different substrate systems like glass, silicon and even optical fibers makes it a promising technique to manufacture integrated components [58,59]. For example, free-form optical elements can be found as a major component in on-chip as well as fiber-based optics.…”

Section: Fabrication On Flat Substratesmentioning

confidence: 99%

Two-photon polymerization lithography for imaging optics

Wang,

Pan,

et al. 2024

Int. J. Extrem. Manuf.

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Optical imaging systems have greatly extended human visual capabilities, enabling the observation and understanding of diverse phenomena. Imaging technologies span a broad spectrum of wavelengths from X-ray to radio frequencies and impact research activities and our daily lives. Traditional glass lenses are fabricated through a series of complex processes, while polymers offer versatility and ease of production. However, modern applications often require complex lens assemblies, driving the need for miniaturization and advanced designs with micro- and nanoscale features to surpass the capabilities of traditional fabrication methods. Three-dimensional (3D) printing, or additive manufacturing, presents a solution to these challenges with benefits of rapid prototyping, customized geometries, and efficient production, particularly suited for miniaturized optical imaging devices. Various 3D printing methods have demonstrated advantages over traditional counterparts, yet challenges remain in achieving nanoscale resolutions. Two-photon polymerization lithography (TPL), a nanoscale 3D printing technique, enables the fabrication of intricate structures beyond the optical diffraction limit via the nonlinear process of two-photon absorption within liquid resin. It offers unprecedented abilities, e.g., alignment-free fabrication, micro- and nanoscale capabilities, and rapid prototyping of almost arbitrary complex 3D nanostructures. In this review, we emphasize the importance of the criteria for optical performance evaluation of imaging devices, discuss material properties relevant to TPL, fabrication techniques, and highlight the application of TPL in optical imaging. As the first panoramic review on this topic, it will equip researchers with foundational knowledge and recent advancements of TPL for imaging optics, promoting a deeper understanding of the field. By leveraging on its high-resolution capability, extensive material range, and true 3D processing, alongside advances in materials, fabrication, and design, we envisage disruptive solutions to current challenges and a promising incorporation of TPL in future optical imaging applications.

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Section: Fabrication On Flat Substratesmentioning

confidence: 99%

Two-photon polymerization lithography for imaging optics

Wang,

Pan,

et al. 2024

Int. J. Extrem. Manuf.

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Multiphoton Lithography of Interpenetrating Polymer Networks for Tailored Microstructure Thermal and Micromechanical Properties

Silbernagl,

Szymoniak,

Tavasolyzadeh

et al. 2024

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Multiphoton lithography (MPL), an emerging truly 3D microfabrication technique, exhibits substantial potential in biomedical applications, including drug delivery and tissue engineering. Fabricated micro‐objects are often expected to undergo shape morphing or bending of the entire structure or its parts. Furthermore, ensuring precise property tuning is detrimental to the realization of the functionality of MPL microstructures. Herein, novel MPL materials based on interpenetrating polymer networks (IPNs) are presented that effectively combine the advantages of acrylate and epoxy systems. IPNs with varying component ratios are investigated for their microfabrication performance and structural integrity with respect to thermal and micromechanical properties. A variety of high‐resolution techniques is applied to comprehensively evaluate IPN properties at the bulk, micron, and segmental levels. This study shows that the MPL laser scanning velocity and power, photoinitiator content, and multi‐step exposure can be used to tune the morphology and properties of the IPN. As a result, a library of 3D MPL IPN microstructures with high 3D structural stability and tailored thermal and micromechanical properties is achieved. New IPN microstructures with Young's moduli of 3–4 MPa demonstrate high‐to‐fully elastic responses to deformations, making them promising for applications in morphable microsystems, soft micro‐robotics, and cell engineering.

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Fabrication of 3D micro-structures using two-photon lithography technology

Lee,

2024

JMST Adv.

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Enhanced mechanical property through high-yield fabrication process with double laser scanning method in two-photon lithography

Cited by 4 publications

References 53 publications

Two-photon polymerization lithography for imaging optics

Two-photon polymerization lithography for imaging optics

Multiphoton Lithography of Interpenetrating Polymer Networks for Tailored Microstructure Thermal and Micromechanical Properties

Fabrication of 3D micro-structures using two-photon lithography technology

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