Inverse 4D printing where cooling flat carbon-fiber composite panels naturally deform into precisely curved vertical-axis wind turbine blades
https://techxplore.com/news/2026-07-4d-method-lighter-faster-turbine.html "eliminates need for expensive, specialized structural manufacturing molds... works backwards from desired blade geometry calculating ideal carbon/ epoxy layer orientation... match standard commercial aluminum options' precise shape while weighing approximately 80% less... small turbines outfitted with these lightweight composite blades rotate faster, signaling a major boost in aerodynamic efficiency and a cheaper path forward for urban renewable energy systems" Related: Bioinspired strategy creates complex 3D curved structures via programmed shrinkage https://phys.org/news/2026-07-bioinspired-strategy-complex-3d-shrinkage.html