Fig. 2
From: Dynamic biospeckle analysis, a new tool for the fast screening of plant nematicide selectivity
Sample preparation and object detection with 5 nematodes per cuvette. a Sample cuvettes containing 1 mL Ludox to 1 mL water with the Ludox® TMA/water mixing layer containing the nematodes indicated by yellow arrows. b Water–air boundary with PEITC, methanol or water added for controls; PEITC as an oil formed a film on top of the water column, while methanol dissolved. c Examples of the numbers of bacterial feeders detected out of 5 with a high brightness detection threshold. A high threshold was set to ensure that speckle from sources other than the nematodes is excluded