Chien-Shiung Wu College, Southeast University, Nanjing, 211102, China.
School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
J Mater Chem B. 2023 Sep 27;11(37):8883-8896. doi: 10.1039/d3tb00763d.
3D gradient printing is a type of fabrication technique that builds three-dimensional objects with gradually changing properties. Gradient digital light processing based 3D printing has garnered considerable attention in recent years. This function-oriented technology precisely manipulates the performance of different positions of materials and prints them as a monolithic structure to realize specific functions. This review presents a conceptual understanding of gradient properties, covering an overview of current techniques and materials that can produce gradient structures, as well as their limitations and challenges. The principle of digital light processing (DLP) technology and feasible strategies for 3D gradient printing to overcome any barriers are also presented. Additionally, this review discusses the promising future of 4D bioprinting systems based on DLP printing.
3D 梯度打印是一种制造技术，可使用具有逐渐变化性质的材料构建三维物体。基于梯度数字光处理的 3D 打印近年来受到了广泛关注。这种面向功能的技术可精确控制材料不同位置的性能，并将其打印为整体结构，以实现特定功能。本综述介绍了对梯度性能的概念理解，涵盖了可产生梯度结构的当前技术和材料概述，以及它们的局限性和挑战。还介绍了数字光处理（DLP）技术的原理和 3D 梯度打印克服任何障碍的可行策略。此外，本综述还讨论了基于 DLP 打印的 4D 生物打印系统的广阔前景。
