The paper is featured on Nano Letters’ cover.

A research team led by Professor Gao Enlai from the School of Civil Engineering at Wuhan University has introduced a novel unified spatiotemporal failure law for polymer chains.

This work, A Unified Spatiotemporal Failure Law for Polymer Chains, has been published in Nano Letters.

At the nanoscale, the random failure behavior of materials affects the reliability, durability, and safety of micro-nano devices operating in extreme environments. Traditional mechanical methods become inapplicable at these scales, and existing extreme value statistical models rely on empirical parameters, raising questions about their universality.

Developing a universal theory capable of predicting the spatiotemporal failure of materials at the micro-nano scale has become crucial for understanding and designing highly reliable devices.

The team has proposed a unified spatiotemporal failure law that, for the first time, incorporates the effects of time, size, load, and temperature on the random failure behavior of polymer chains into a single theoretical framework.

This law predicts material aging and failure based solely on atomic interactions, without the need for any fitting parameters, revealing the equivalence of spatiotemporal scales, quantifying the impact of common numerical truncation errors on failure statistics, and providing a valuable physical tool for assessing the reliability of nanomaterials.

This breakthrough offers a new perspective on the reliability evaluation of nanomaterials, revolutionizing the design and development of micro-nano devices with enhanced reliability and performance in extreme environments.