<ul data-eligibleForWebStory="true"><li>Researchers have discovered a phenomenon where a soft sphere can roll down a vertical wall when placed on a soft surface.</li><li>The effect relies on the right level of softness for both the wall and the sphere, allowing a 1-millimeter radius sphere to roll down the wall with slight slipping.</li><li>This rolling on a vertical surface is facilitated by the asymmetric contact between the soft sphere and the surface, providing the torque needed for rolling.</li><li>The findings could potentially lead to new advancements in soft robot capabilities for climbing and descending vertical surfaces.</li></ul>

Rolling Down Soft Surfaces

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