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All‐inorganic cesium lead triiodide (CsPbI3) perovskite is considered a promising solution‐processable semiconductor for highly stable optoelectronic and photovoltaic applications. However, despite its excellent optoelectronic properties, the phase instability of CsPbI3 poses a critical hurdle for practical application. In this study, a novel stain‐mediated phase stabilization strategy is demonstrated...
Endothelial and epithelial cells usually grow on a curved environment, at the surface of organs, which many techniques have tried to reproduce. Here a simple method is proposed to control curvature of the substrate. Prestrained thin elastomer films are treated by infrared laser irradiation in order to rigidify the surface of the film. Wrinkled morphologies are produced upon stress relaxation for irradiation...
In article number 1900162, Caterina Tomba, Valeriy Luchnikov, and co‐workers present a versatile approach to produce curved surfaces with dynamic and variable topographic parameters. Mid‐infrared laser exposure allows for surface stiffening of an elastomer that is suitable as wavy substrate to grow cells on smooth and more realistic micro‐environments. The wrinkled geometry is tuned by controlling...
In article number 1900219, Donghwa Lee, Jooho Moon, and co‐workers develop an approach to stabilize α‐CsPbI3 perovskite through strain engineering, whereby CsPbI3 perovskite is confined by a vertically aligned nanoporous template. By imposing a strain on the perovskite lattice, the ultra‐stable black α‐CsPbI3 with its desirable optoelectrical properties is obtained. This universally applicable template‐based...
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