Reversible nanohelix transformation is one of the most exquisite and important phenomena in nature. Nanomaterials rarely form helical crystals. Due to the irreversibility of the twisting forces studied so far, untwisting is more difficult than retwisting crystalline nanohelices. Therefore, many reversible twist transformations between two stable crystalline products are rare and require a sensitive energy balance. This reversible transformation of nanohelices has long been considered difficult to achieve.
Researchers from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences, in collaboration with researchers from Nanjing University and the University of Science and Technology of China, have discovered a subtle competition and cooperation relationship within the, establishing a delicate energy balance between the structures of the twisted and untwisted crystalline nanohelices.
For the first time, the researchers have achieved multiple reversible transformations between nanowires and nanohelices. The study was published in
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