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可3D打印的磁力变形器 – 译学馆
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可3D打印的磁力变形器

Magnetic shape-shifters

麻省理工的工程师制造出了一种柔软的可以一秒变形的3D打印磁材料
MIT engineers have created soft, magnetic 3-D-printed structures that can transform their shape in fractions of a second.
这种材料非常灵活并且坚硬 它甚至可能发展为生物医学上的远程控制设备
The structures are flexible yet strong and could be used to develop remotely controlled biomedical devices.
研究者釆用一种新型的可3D打印的墨水打印成这种材料
The researchers fabricated each structure from a new type of 3-D printable ink that they infused with tiny magnetic particles.
这种墨水是熔化微小磁粒得来的 这些磁粒会吸附于3D打印机管口周围的电磁铁
They fitted an electromagnet around the nozzle of a 3-D printer,
这导致当墨水通过管道时 磁粒会被吸附到一个方向上
which causes the magnetic particles to swing into a single orientation as the ink is fed through.
所以研究人员可以仅靠改变电磁体的方向改变磁粒运动方向
This allows the researchers to print sections of a structure and
并以此来打印一个结构的各个组成部分
tune the orientation of the magnetic particles by simply changing the direction of the electromagnet.
同时通过控制结构中各部分磁粒的运动方向
By controlling the magnetic orientation of individual sections in a structure,
研究人员可以制造出能够瞬间转变为复杂形状的结构和设备
the researchers can produce structures and devices that can shift into intricate formations almost instantaneously,
并且它们会对外磁场产生反应 然后随着外磁场动来动去
and move about as the various sections response to an external magnetic field.
另外 这些结构不仅可以被操控着折起 平移 跳跃 还可以快速卷起一个滚入的球
These structures can be manipulated to wrinkle up, walk, roll, jump, and snap together fast enough to catch a passing ball.
有的甚至可以把自己折成药丸大小 在平面上滚来滚去
One can even wrap itself around a small pill and carry it across a flat surface.
这个研究组也做出了一个物理模型用来演示打印的结构在磁场作用下是怎么运作的
The team also developed a physical model that predicts how a printed structure will deform under a magnetic field.
由于打印材料有弹性 域的模式
Given the elasticity of the printed material, the pattern of domains in a structure,
在外部增加一个磁场 可以使一个完整的结构会变形或者移动
and the way in which an external magnetic field is applied, the model can predict the way an overall structure will deform or move.
使用他们的新打印平台和演示模型 人们将能设计自己的模型 验证它们并且把它们打印出来
With their new printing platform and predictive model, people will be able to design their own structures, validate them, and then print them.
他们认为将来这项技术在生物医学方面的应用可能会非常普及
The researchers think this technique maybe especially useful for blomedical applications
比如将它放入血管中控制血压 或者用磁场引导设备
such as placing a structure around a blood vessel to control the pumping of blood, or using a magnet
穿过消化道清理肠胃 或者把药放到指定的位置
to guide a device through the GI tract to clear a blockage, or deliver drugs to a specific location.

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会动的磁力变形器

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