Author(s): Mateusz Wiśniewski and Jakub Spiechowicz A recent pioneering experiment [Ginot and Bechinger, Nat. Commun. 16, 10114 (2025)] demonstrated that a driven overdamped colloidal particle in a harmonic trap immersed in a viscoelastic fluid can recuperate energy dissipated into the surrounding bath and convert it into useful work. In this Letter … [Phys. Rev. Lett. 137, 177102] Published Wed Oct 21, 2026