Extended Data Fig. 2: Preparation of optical fiber shuttle arrays.

a, Schematic (top) and corresponding optical images (bottom) showing the preparation process of an optical fiber-based shuttle device. Scale bar, 250 μm. b, Preparation process of an optical fiber-based shuttle array. Magnified view shows the tips of the aligned optical fibers from the bottom. Scale bars, 2 mm and 1 mm (magnified view). c, Photos showing the etching process of an optical fiber shuttle array. From left to right: a 50-μm-long acrylate coating layer was removed from the front ends of all optical fibers; the exposed cladding layer was thinned down to ca. 60 μm in diameter; a 1-cm-long acrylate coating layer was removed from the front-ends of the optical fibers, and the exposed cladding and core layers were etched to form the final optical fiber shuttles with T-shaped front-ends. Scale bar, 1 mm. d, Photo of a shuttle array. Scale bar, 2 mm.