Prof. Li Yan from Peking University research team to solve the problem of carbon nanotube application

Prof. Li Yan from the School of Chemistry and Molecular Engineering at Peking University has achieved a significant breakthrough in the controlled chiral growth of single-walled carbon nanotubes. This groundbreaking research was recently published in the prestigious journal *Nature*, offering a promising solution to one of the most challenging issues in nanomaterials science—achieving precise control over the growth of carbon nanotubes. The findings are expected to greatly advance the development of carbon-based electronics, opening new possibilities for next-generation devices. As silicon-based CMOS technology approaches its physical limits in the coming decade, the need for alternative materials in microelectronics is becoming increasingly urgent. In 2009, the International Semiconductor Roadmap Committee highlighted carbon nanotubes and graphene as potential candidates for post-Moore’s Law electronics, predicting they could become commercially viable within the next 15 years. However, the lack of a reliable method for controllable growth of carbon nanotubes has remained a major obstacle in realizing this vision. After more than a decade of dedicated research, Prof. Li Yan and his team have made substantial progress in understanding the mechanisms behind carbon nanotube growth and the role of catalysts. Based on this knowledge, they developed a novel approach to achieve structure- and chirality-controlled growth of single-walled carbon nanotubes. Their innovation involves a class of tungsten-based alloy catalysts that can withstand high temperatures, ensuring the structural integrity of the nanotubes during growth. Moreover, the unique atomic configuration of these catalysts allows for precise control over the nanotube's geometry and electronic properties, enabling the synthesis of nanotubes with specific characteristics. This research was supported by the National Natural Science Foundation of China’s Outstanding Youth Fund and the Ministry of Science and Technology’s Major Research Project. Collaboration with institutions such as the Hong Kong Polytechnic University, the Institute of Physics at the Chinese Academy of Sciences, and the Shanghai Synchrotron Radiation Source played a crucial role in the success of the project. With this breakthrough, the path toward practical applications of carbon-based electronics is now clearer, marking an important step forward in the field of nanotechnology and advanced materials.

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