3D printing is getting smaller and more precise. LCD-based 3D printing is a budget-friendly way to make tiny microfluidic devices. But, it's not perfect. The problem? Sticky resin and wobbly release films can mess up the tiny details.

Here's a clever fix: sticky tape. By adding transparent double-sided tape between the LCD screen and the release film, the film stays put. This reduces movement and improves the vertical accuracy of tiny prints. The error rate drops from a whopping 20% to just 5%.

Tests showed that the best layer height is between 20-30 micrometers. At this size, the printed molds match the design perfectly. Even tiny details less than 30 micrometers wide can be printed. The method works with different resins, making it versatile.

This technique isn't just about precision. It's also useful. Microfluidic chips for creating concentration gradients can be made with a minimum cross section of 204 micrometers. These chips can be used in studies, like researching silicosis and the preventive effects of NAC.

The immobilized release film method could be a game-changer. It makes microfluidic technology more accessible and expands its uses in fields like biochemistry, pharmaceuticals, and medicine. But, is this the final solution? Or just another step in the evolution of microfabrication?

RESIN PRINTING

Tiny Tech Boost: Making Micro 3D Printing More Precise

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