Fig. 7: Surface interaction of carrier (gray) with active pharmaceutical ingredient (API) (blue). | Communications Materials

Fig. 7: Surface interaction of carrier (gray) with active pharmaceutical ingredient (API) (blue).

From: Aerodynamic performance of tailored microparticles as carriers in dry powder inhaler formulations made by multi-focus multi-photon 3D laser printing

Fig. 7

a Surface grooves of carrier are larger than API leading to API getting stuck; b API is larger than grooves, rough surface leading to small contact area; c API is larger than grooves, smooth surface leading to larger contact area.

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