3-D printing by direct laser writing enables production of micro-meter-sized structures for many applications, from biomedicine to microelectronics to optical metamaterials. Researchers have now developed 3-D inks that can be erased selectively. This allows specific degradation and reassembly of highly precise structures on the micrometer and nanometer scales.
from Engineering and Construction News – ScienceDaily https://www.sciencedaily.com/releases/2018/08/180815102904.htm
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