Figure 3
From: Mosquito repellence induced by tarsal contact with hydrophobic liquids
Rapid wetting on mosquito legs distract staying on liquid-coated substrates. (a) Contact-time of mosquitoes on glass substrates coated with PDMSs (n = 8–13). L-PDMS (γ = 19.2 mN/m, η = 0.0054 Pa s) (light green and orange circle), M-PDMS (γ = 20.9 mN/m, η = 0.060 Pa s) (green circle), and H-PDMS (γ = 21.4 mN/m, η = 4.5 Pa s) (dark green and orange circle). Application ratio: 0.25 and 2.0 mg/cm2. Liquid viscosity difference did not affect attraction behaviour of mosquitoes and coated state on the substrates (Supplementary Fig. S4b, S5b). Different letters (A or B) indicate significant variance among liquids (one-way ANOVA with the Tukey post hoc test, P = 2.27 × 10−5). The contact time of each trial is displayed in Supplementary Table S3. (b). Schematic of AFM-probe contacting on a PDMS film. Attractive capillary force caused by meniscus formation is obtained with atomic force microscopy. (c) Dynamical generation of attractive capillary force between the probe and PDMS films (n = 5–6). LPDMS-1 (thickness, h = 200 nm), HPDMS-1 (h = 200 nm), HPDMS-2 (h = 120 nm). Data are plotted as the mean value of the attractive force ± s.d. (d) Attractive capillary force in short time range of (c). Data are plotted as the mean ± s.d.
