为了推动生物医学传感器，物质科学家来自塞维利亚大学，，，，Spain, and theUniversity of Nottingham已经创建了一个3D打印图像稳定黄金的纳米颗粒。
如发表在自然，，，，gold nanoparticles themselves are not printable but provide biocompatible properties in fields such as诊断。例如，嵌入金纳米颗粒的电化学系统已用于识别tumor cellsand癌症生物标志物。
因此，从天然糖的阿拉伯糖制备了各种具有梳状结构的聚合物，以产生具有极高稳定性的微小金纳米颗粒。然后对墨水进行测试。
“The University of Seville logo was printed by employing those inks, and the presence of gold was confirmed. This approach has the potential to open new routes and applications for fabrication of enhanced biomedical nanometallic-sensors.”
新型金属材料
As well as gold’s biocompatibility, this material’s conductivity has been leveraged for manymultifunctional devices。Furthermore, the researchers have recognized a social concern on the usage, disposal, and accumulation of plastic materials. Therefore, in their investigation to create novel 3D printable inks for biomedical nano metallic-sensors, sugar-based biodegradable polyurethane polymers were utilized.
It is stated these polymers exhibit “outstanding properties as polymer-matrix for gold nanoparticles composites.” The study continues, “Currently, the best approach to inkjet print metals is its application as nanoparticles.”
“但是，仅基于金属纳米颗粒的墨水打印墨水印刷的使用表现出较差的商业结果，因为墨水的稳定性较低。这些材料可以达到卓越的稳定水平，并表现出潜力作为基于喷墨印刷的新型鲁棒墨水。”
A golden image
The University of Seville logo was produced using five layers of the developed gold nanoparticle ink formulation with a Dimatix printer. The logo image was printed at 35 µm droplet spacing using all 16 nozzles in the Dimatix 10pL printhead. An EPSON premium glossy photo paper was used as a substrate. The printed pattern was then further dried with a heat gun until the residual liquid was fully evaporated.
Upon experimentation, it was deduced that the comb-like copolyurethanes acted as proven gold nanoparticle stabilizers. This means that it can be used as inks for inkjet printing. The research team intends to conduct more experiments using 3D printing, to further validate the use of such inks for biosensors.
“Design of highly stabilized nanocomposite inks based on biodegradable polymer-matrix and gold nanoparticles for Inkjet Printing，”合着贝伦开始了，，，，安娜·阿尔库迪亚，，，，Raul Aguilera-Velazquez，，，，Guillermo Martinez，，，，尹芬他，，，，Ricky Wildman, Maria-Jesus Sayagues, Aila Jimenez-Ruiz, and Rafael Prado-Gotor.
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Featured image shows a depiction of golden particles. Image via Motion Array.
