科学家巴塞罗那科学技术学院（BIST）已经发布了新的research paper，显示一种使用SLS打印机的3D打印彩色对象的方法。
The technology discussed in the paper shows the possibility of mixing polymer powders with commercial inks to enable on-demand 3D color printing using inkjet based methods by introducing nano materials.
Gold nanorods (GNR) were used as nanoengineered photothermal synthesizers (NEPS) to make a powdered material suitable for selective laser sintering. The powders were then mixed with commercial dyes to make colored nanocomposites. Finally, these colored nanocomposites were used to 3D print a colorful dragon.
当前的市售SLS 3D打印系统只能产生黑色，灰色和白色对象。惠普计划将颜色3D打印带到市场喷气融合300 /500系列与基于电源的多喷气融合。Various degrees of color 3D printing are available with Fused Deposition Modeling (FDM) and other printing methods such as binder jetting, material jetting, sheet lamination processing. However, coloration of SLS 3D prints is typically performed during post-processing.
彩色3D打印粉末
BIST研究人员生产了两种粉末，一种聚酰胺（PA12）粉末与GNR混合，另一个与碳（行业标准）混合在一起。为了测试结果，将两个复杂形状相同的物体用1 W 808 nm二极管激光烧结。GNR粉末产生了一个准备后期处理的白色对象。研究人员发现这种复合材料had “improved light-to-heat conversion compared with equivalent composites using the industry standard carbon black as a sensitizer and could be sintered using low-power light sources.此外，“它们看起来更白，可以与染料混合时产生鲜艳的3D物体。我们的结果为利用等离激元纳米颗粒生成彩色和功能性的3D打印对象的新途径。”
GNR were used for its cost and energy efficiency. They can be produced in large batches at a low cost and can reach a given temperature more quickly than carbon-based sensitizers.
“添加剂制造中谐振纳米颗粒的利用使得对3DP材料的视觉和光热特性几乎完全控制，并为基于彩色粉雷电竞充值末的3D打印打开了门。”
研究人员得出结论：“ NEP的使用允许自定义复合材料和最终印刷物体的光热和光谱响应，这可能会导致提高的效率和机会使用新型的添加剂制造的新型光源”””雷电竞充值
Full color 3D printers
Many companies are in a race to master the on-demand color 3D printing technology. The forthcoming HP system may find a market who require a color 3D printing solution, while ongoing updates and expansion of the materials palette available on theStratasys J750给出非常令人印象深刻的结果。同样值得注意的是Mimaki 3DUJ-553 3D打印机。更长的时间范围是苹果公司的潜在设备，2018年1月苹果was granted a US全彩3D打印机的专利。
题为“基于谐振光热敏化剂的白色和鲜艳的3D打印”由亚历山大·鲍威尔（Alexander W.
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特色图显示了研究期间制造的3D印刷彩色龙。通过美国化学学会的照片
