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- Hard rock drill bits play an indispensable role in the realm of geotechnical and mining operations, serving as the cutting edge of drilling machinery. These specialized tools, designed to withstand the rigors of drilling through some of the toughest geological formations, are the backbone of numerous industries, including construction, oil and gas exploration, and mineral extraction.

The hard carbon aerogel can maintain the super-elasticity in harsh conditions, such as in liquid nitrogen. Based on the fascinating mechanical properties, this hard carbon aerogel has promise in the application of stress sensors with high stability and wide detective range (50 KPa), as well as stretchable or bendable conductors. This approach holds promise to be extended to make other non-carbon based composite nanofibers and provides a promising way of transforming rigid materials into elastic or flexible materials by designing the nanofibrous microstructures.