Microstereolithography

Bertsch, Arnaud; Renaud, Philippe

doi:10.1016/b978-0-323-35321-2.00002-9

Cited by 6 publications

(2 citation statements)

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“…Thus, multiphoton SLA enables a highly localized polymerization of the photoresist, which is essential for the direct writing of elaborate 3D geometries (Figure D). However, multiphoton SLA only affords a resolution of a few hundred nanometers and provides a low throughput as it belongs to “serial” processes, which operate with a multiexposure to light for the voxel-to-voxel printing of the resist. , Nevertheless, MSLA is compatible with a wide variety of photoresists including (meth)acrylates, epoxides, organically modified silica, and organically modified ceramics. − …”

Section: Photostructuring Mipsmentioning

confidence: 99%

“…A laser beam of the appropriate wavelength is then focused in a precursor solution a few micrometers above a microscope slide to write the first 2D layer. This allows minimizing light scattering, for an improved resolution, while also preventing a premature polymerization of the second 2D layer. ,, The motion of the substrate along the z -axis then allows the structure to grow to 3D. Shea and co-workers were the first to use this technique for MIPs, manufacturing 600 μm × 600 μm 2D and 3D (today considered 2.5D) grids (Figure ) imprinted with 9-ethyladenine using a 364 nm Ar+ laser and an x - y - z motorized stage to explore the possibilities of miniaturization, which is important in sensing and diagnostics as it limits both energy consumption and production costs.…”

Section: Photostructuring Mipsmentioning

confidence: 99%

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Photopolymerization and Photostructuring of Molecularly Imprinted Polymers

Paruli

Soppera

Haupt

et al. 2021

ACS Appl. Polym. Mater.

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Over the past few decades, molecularly imprinted polymers (MIPs) have become extremely attractive materials for biomimetic molecular recognition due to their excellent affinity and specificity, combined with robustness, easy engineering, and competitive costs. MIPs are synthetic antibody mimics obtained by the synthesis of 3D polymer networks around template molecules, thus generating specific binding cavities. Numerous efforts have been made to improve the performances and the versatility of MIPs, with a special focus on ways to control their size, morphology, and physical form for a given application. Gaining control over these parameters has allowed MIPs to adopt a defined micro- and nanostructure, providing access to nanocomposites and micro/nanosystems, with fine-tuned properties, which become critical for modern applications ranging from chemical sensing to bioimaging and medical therapy. In this rich and complex context, light as a cheap and versatile source of energy has emerged as a powerful tool for structuring MIPs. This review presents the most recent advances on structuring MIPs at the nano/microscale, using light as a stimulus to trigger the polymerization process. Thus, after a general introduction on radical polymerization of MIPs, with a special emphasis on photopolymerization by UV and visible light, the reader will be presented with ways of structuring MIPs by processes that are inherently spatially confined, such as localized photopolymerization and lithographic techniques, supported by representative examples and complemented with a final outlook on future trends in this field.

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