# New Stacked Porous NiTi Structure Achieves High Cooling Power

- Published: 2026-11-06 22:12 UTC
- Section: Machines & Making › Materials science
- Tags: elastocaloric cooling, shape memory alloys, fatigue-resistant structures, heat transfer, cost-effective production
- URL: https://realtech.media/news/rt-104145fa7953dbda8f252dd1_new_stacked_porous/

**A novel stamping and stacking method produces fatigue-resistant NiTi structures for elastocaloric cooling, enhancing heat transfer and reducing costs.**

![New Stacked Porous NiTi Structure Achieves High Cooling Power](https://realtech.media/media/2026/11/1a13eae36ed9890d.jpg)
*Davalemacmar, Wikimedia Commons, CC BY-SA 3.0*

Researchers have developed a new method for producing porous, fatigue-resistant shape memory alloy (SMA) structures for elastocaloric cooling (eC). The stamping and stacking (S-S) technique involves creating honeycomb-like chips from nitinol (NiTi) thin sheets, which are then assembled into a tubular structure. This design increases the heat exchange surface while preventing common failures such as buckling and splitting. The resulting structure can withstand over 10^8 compression cycles and delivers a specific cooling power of 3850 watts per kilogram. Additionally, the S-S method reduces fabrication costs by an order of magnitude compared to existing techniques, facilitating the mass production of eC refrigerant structures for commercial use. [1]

## Sources

1. [Science](https://doi.org/10.1126/science.aeh7074)

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Source: RealTech, realtech.media — https://realtech.media/news/rt-104145fa7953dbda8f252dd1_new_stacked_porous/