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The cover image shows a stretchable photovoltaic module consisting of ultrathin, inorganic solar cells interconnected in mesh‐like geometries and mounted onto structured elastomeric substrates, as reported by Yonggang Huang, John A. Rogers, and co‐workers on p. 986. Mechanical deformations are accommodated by the flexible interconnects of the mesh and stretchable trenches of the substrate.
Strategies are presented for achieving, simultaneously, both large areal coverage and high stretchability by using elastomeric substrates with surface relief in geometries that confine strains at the locations of the interconnections, and away from the devices. The studies involve a combination of theory and experiment to reveal the essential mechanics, and include demonstrations of the ideas in stretchable...
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