Observing and taming the effects arising from non-trivial light–matter interaction has always triggered scientists to better understand nature and develop photonic technologies. However, despite tremendous conceptual advances^1,2, so far there have been only a few experimental proposals to reveal unusual optomechanical manifestations that are hardly seen in everyday life, such as negative radiation pressure^3,4, transverse forces^5,6 or left-handed torques⁷. Here, we report naked-eye identification of spin-dependent lateral displacements of centimetre-sized objects endowed with structured birefringence. Left-handed macroscopic rotational motion is also reported. The unveiled effects ultimately rely on spin–orbit optical interactions and are driven by lateral force fields that are five orders of magnitude larger than those reported previously, as a result of the proposed design. By highlighting the spin–orbit optomechanics of anisotropic and inhomogeneous media, these results allow structured light–matter interaction to move from a scientific curiosity to a new asset for the optical manipulation toolbox.

观察和驯服非平凡的光与物质相互作用所产生的影响，总是促使科学家更好地了解自然并开发光子技术。但是，尽管在概念上取得了巨大的进步^1,2，但到目前为止，只有很少的实验性建议来揭示在日常生活中几乎看不到的不寻常的光机械表现，例如负辐射压力^3,4，横向力^5,6或左向压力。扭矩⁷。在这里，我们报告了具有结构化双折射的厘米级物体的自旋相关横向位移的肉眼识别。还报告了左手宏观旋转运动。最终提出的效应最终取决于自旋轨道的光学相互作用，并由横向力场驱动，该力场是拟议设计的结果，比以前报道的力场大五个数量级。通过强调各向异性和非均匀介质的自旋轨道光机，这些结果使结构化的光-质相互作用从科学的好奇心转变为光学操纵工具箱的新资产。