The nanoscale building blocks that make up many materials exhibit extraordinary mechanical properties due to their defect-free structures. However, it is difficult to translate these mechanical properties to the macroscale because the building blocks must be arranged into patterns, and poor adhesion and misalignment create defects at larger scales.
For example, the outer cell wall layer of wood consists of aligned cellulose nanofibrils, which give wood strength and stiffness. Trying to mimic the natural alignment of these nonofibrils in the lab has proved largely fruitless, until now. An international team of researchers has created a method to organize cellulose nanofibrils into macroscale fibers with nearly perfect...
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