研究ers atVilnius University, Lithuania, have succeeded in 3D printing glass-ceramics on a nanoscopic scale.
Strong and potentially fluorescent or superconductive, these无定形材料, and their fabrication via additive manufacturing, facilitates the creation of tailor-madequantum dotsand unlocks new potential in microdevice manufacturing. Examples of such devices includemicrorobotsor微流体芯片used in medical research.
超快激光3D光刻
For this experiment, the researchers used两光刻光刻technology. A method of 3D fabrication on a photonic scale, the technology employs an ultrafast pulsed femtosecond lasers to precisely cure a light-reactive material. One commercial method of this technology is marketed by Germany’sNanoscribein the光子专业GT系统, however the Vilnius University system is known as “ultrafast laser 3D lithography” or “3DLL.”
选择用于研究的材料是玻璃陶瓷或“溶胶 - 凝胶”，抗性SZ2080，一种经过改良的硅胶和光聚合物，经常研究用于医疗应用，并用于制作UV保护涂层或量子点。
Green parts and glass-ceramics
A multi-step process, similar togreen part metal sintering, SZ2080 is first 3D printed into a desired shape with features hundreds of nanometers in size. Examples given in this study include a micro-sculpture of Vytis, the coat of arms of Lithuania; a cube; photonic crystal structures and hexagonal scaffolds.
印刷后，零件在高达1500°C的温度下烧结。该过程分解了80％的材料含量，导致该零件收缩40％至50％，并产生的分辨率甚至比ASSPRINT的零件更高。
The sintering process also creates the object’s glass-ceramic crystalline structure, leading to superior mechanical and chemical properties.
正如研究所述，“在约20％的无机成分中存在的二氧化硅和氧化锆前体将导致最终烧结的陶瓷材料中的二氧化硅和氧化锆结晶相。”
更复杂，弹性的微论述
By tailoring this process, researchers will be able to make freeform 3D structures with a complexity impossible to create via other microfabrication methods. In addition, the structures, as stated in the conclusions of this study, will “acquire new features, especially resilience at harsh physical and chemical environments.”
此外，“既然纳米级材料可以引发沉淀”（用于制作颜料和进行水除外）”，并指导纳米晶体的生长”（例如，量子点）“通过所呈现的范围扩大了用于实验的范围，则表示添加剂制造的方式。”雷电竞充值
‘Additive-Manufacturing of 3D Glass-Ceramics down to Nanoscale Resolution’可以通过研究Gate。该论文由DariusGailevičius，ViktorijaPadolskytė，LinaMikoliūnaitė，Simasšakirzanova，Saulius Juodkazis和Mangirdas Malinauskas共同撰写。
The research was funded by a grant from the美国陆军航空和导弹研究开发与工程中心(AMRDEC), which is seeking to uncover applications in efficient sensing.
其他研究3D printed silica glassincludes a study led by the NeptunLab atKarlsruhe技术学院(KIT) in Germany.
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Featured image shows uniform scaling of a micro 3D printed Vytis sculpture. Left shows the sculpture as printed. Right shows the same structure after sintering at 1200°C for one hour. Image via Vilnius University
