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. 2022 Apr 6;13:1873. doi: 10.1038/s41467-022-29157-z

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Fig. 1 — a A beam focused using an external lens through a 1-cm cuvette filled with a diluted intralipid solution (0.2 %). A sharp focal point with a contrast ratio of 5 is obtained with merely ballistic photons (scale bar = 25 µm). b The percentage of guided photons through a waveguide with dn = 0.002 and a scattering core of g = 0.85. The dashed line in the inset represents a threshold of 0.6%. c Percentage of guided scattered photons for increasing values of dn.