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. 2014 Aug 18;86(18):9029–9035. doi: 10.1021/ac501491t

Figure 1.

Figure 1

Functionalization of retroreflector cubes. (A) Reaction of glycine with epoxy groups on exposed SU-8 surfaces. (B) Addition of 6-mercapto-1-hexanol to gold surfaces. (C) and (D) EDC/NHS addition of antibodies. (E) Wafer of cubes before release. (F) SEM image of cubes spotted onto a wafer after release and functionalization. Aggregation shown here is an artifact of drying; aggregation of cubes in normally negligible. Black scale bars (E, F) are 10 μm. (G) Image of retroreflector cubes spotted onto a wafer, captured with a 0.085 numerical aperture CMOS camera with inline light source; white scale bar 100 μm.