The same qualities that defined Winston Churchill 100 years ago. Courage to do the right thing (not the easiest), determination and the ability to inspire others. And the most important, that is the decisiveness in the face of adversity.

Research generously funded by @vetenskapsradet.bsky.social @erc.europa.eu and @kawresearch.bsky.social

Our findings demonstrate that nanoporosity affects fundamental ultrafast electronic processes and introduces this platform as temporal metamaterial allowing the emergence of tunable electronic properties not supported by the bulk counterpart. 5/5

The experimental results are consistent with the two-temperature model, which highlights the role of nanoscale porosity in enabling the more efficient generation of hot carriers, thus allowing lower energy photons to induce interband transitions. 4/n

Here, we unravel that the nanoporous sample supports lower energy interband transitions, due to a much higher electron temperature in the nanoporous material, which causes an enhanced redistribution of electron density around the Fermi level. 3/n

While the optical and morphological properties of nanoporous metals have been extensively studied, their electronic properties at ultrafast timescales remain largely unexplored. 2/n

Nanoporous metals have emerged as promising functional architectures due to their tunable optical and electronic properties, high surface areas, and versatile use in real-life applications such as sensing, catalysis, and biomedicine. 1/n

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