Carrier based dry powder inhalers (DPIs) are common vehicles for pulmonary delivery of active pharmaceutical ingredients (APIs), thus powder properties of carrier would generate a pronounced impact on the two dominant delivery stages of the DPIs. In our previous study, a novel modified carrier, the nanoporous mannitol carriers (NPMCs) was prepared to achieve satisfactory aerosolization performance. While the aerosolization performance enhancement mechanism of NPMCs based DPI was still...