A new method has been discovered that enables incredibly detailed resin 3D printing.


Innovative Approach to Enhance Resolution in Resin 3D Printing

Exciting advancements have been made in the field of resin 3D printing, specifically in increasing the resolution of microfluidic chips. These chips, containing channels for fluid flow, have traditionally been manufactured using standard lithography methods. However, researchers have introduced a new method that harnesses the power of resin 3D printing, thereby unlocking the potential for more complex geometries in these devices.

One of the main challenges faced in resin 3D printing is achieving high resolution. Current methods struggle to surpass a resolution of 0.100mm, limiting the precision and intricacy of the printed structures. While “two photon polymerization” (TPP) can achieve microscopic resolutions, it requires specialized equipment and is not readily scalable.

However, a recent study has proposed an intriguing approach using DLP resin 3D printing to fabricate microchannels with both high resolution and scalability. The researchers developed a modified mathematical model that accurately predicts the accumulation of UV irradiance during resin photopolymerization. This model provides guidance for fabricating microchannels with enhanced resolution.

By fine-tuning various printing parameters, such as optical irradiance, exposure time, projection region, and step distance, the researchers were able to precisely control the penetration of UV irradiance within the resin layers. This prevented channel blockage due to overexposure and ensured stable bonding through sufficient resin curing.

The success of this approach is evident in the results obtained. Using a commercial 3D printer with a pixel size of 0.01mm, the team successfully created structures with cross-sectional dimensions of 0.02 x 0.02mm. These dimensions are significantly smaller than the pixel size, highlighting the remarkable precision achieved.

While the study initially focused on biomedical microfluidic parts, there is potential for broader applications. It is conceivable that a similar method could be implemented in typical desktop resin 3D printers. This would greatly enhance the resolution of these devices, opening up new possibilities for various industries.

The prospect of a software upgrade, akin to the advancements made by Klipper in increasing speeds on FFF 3D printers, arises. Manufacturers such as Anycubic, Creality, Elegoo, and Prusa may find value in exploring this research to improve their resin 3D printers.

In conclusion, this research represents a significant step forward in resin 3D printing. The ability to achieve higher resolution and scalability in microfluidic chip fabrication has vast implications for biomedical applications and beyond. It will be fascinating to observe how this innovative approach shapes the future of resin 3D printing technology.

Original source


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