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    Rapid and cost-effective fabrication of microfluidic chips with resin 3D printing
    (Springer Science+Business Media, 2026-01-01)
    The fabrication of microfluidic chips has traditionally relied on photolithographic techniques. Although highly precise, these methods require specialized cleanroom facilities and involve multiple complex steps. In recent years, additive manufacturing—particularly resin-based 3D printing—has emerged as a promising alternative, offering more accessible, cost-effective, and rapid prototyping. In this study, we present a protocol for fabricating high-resolution microfluidic templates using an LCD-based resin 3D printer, followed by replication of microchannels in polydimethylsiloxane (PDMS). Our results show that while LCD 3D printing enables fast prototyping, it has limitations in accurately reproducing fine features (especially channel widths below 100 μm) due to overexpansion of cured resin. Morphological and dimensional analyses by scanning electron microscopy (SEM) revealed discrepancies between the designed and actual channel dimensions, primarily attributed to the printer’s pixel size constraints and light diffusion during polymerization. Despite these challenges, the ability to reuse a printed template for multiple PDMS replications significantly enhances fabrication scalability and cost efficiency. This study underscores the potential of resin-based 3D printing for microfluidic applications and provides optimization strategies to improve dimensional accuracy in future development.
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    Development of a Customized 3D Printed Orthosis for Non-Surgical Treatment of Olecranon Elbow Fractures †
    (Multidisciplinary Digital Publishing Institute (MDPI), 2025-01-01)
    Elbow injuries are the second most common upper extremity fractures and often require invasive and costly surgical treatments. To explore a non-surgical alternative, we present the development and evaluation of a custom 3D-printed static orthosis made from polylactic acid (PLA) designed using 3D scanning, CAD software-based modeling and material characterization, showing promise for broader application in similar elbow injuries.
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