Fig. 1: Schematic illustration and material characterization. | Light: Science & Applications

Fig. 1: Schematic illustration and material characterization.

From: Single-cell biomagnifier for optical nanoscopes and nanotweezers

Fig. 1

a Schematic illustration of the experimental setup. A conventional reflection-mode microscope equipped with a CCD camera and ×100 objective lens was used to observe samples and record images. The inset shown in a PC screen schematically depicting how the biomagnifier is used to magnify and image the subcellular structures inside a biosample. b SEM image of the fiber tip with a diameter of 1.0 μm at its tapered end. c SEM image showing yeast cell-based biomagnifiers with smooth surfaces and spherical shapes. d-f Dark-field images showing 644-nm red light (d), 532-nm green light (e), and 473-nm blue light (f) transmitting through the biomagnifier and being focused into subwavelength light spots with waist radii of 370, 300, and 270 nm, respectively

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