Figure 2
From: Optical tweezing and binding at high irradiation powers on black-Si
(a–c) Fluorescence micrographs of 2D-trapping of polystyrene beads (d = 500 nm) dependent on light intensity (I): (a) 30, (b) 55, (c) 320 kW/cm2. The image (d) at I = 740 kW/cm2 corresponds to 1D-trapping and details are noted in the Fig. 3. Irradiation area is shown as a white circle. Scale bar is 1 μm. Also, a schematic illustration of 2D-trapping of polystyrene beads on a MFBS surface is shown.
