Fabrication and Application of Iron(III)-Oxide Nanoparticle/Polydimethylsiloxane Composite Cone in Microfluidic Channels

Figure 12

The process of the nanoparticle/PDMS droplet becomes a cone shape. The weight ratio of the nanoparticles is 10.2%. (a) 𝐷=1.5 mm, 𝑡=0 s. (b) 𝐷=1.5 mm, 𝑡=10 s. (c) 𝐷=1.5 mm, 𝑡=20 s. (d) 𝐷=1.75 mm, 𝑡=0 s. (e) 𝐷=1.75 mm, 𝑡=10 s. (f) 𝐷=1.75 mm, 𝑡=20 s. (g) 𝐷=2.0 mm, 𝑡=0 s. (h) 𝐷=2.0 mm, 𝑡=10 s. (i) 𝐷=2.0 mm, 𝑡=20 s. (j) 𝐷=1.5 mm. The composite which expands between the substrate and the magnetic is about to break. (k) 𝐷=1.5 mm. The composite breaks into two parts.

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