Aerosolization efficiency is the key characteristic of dry powder inhaler (DPI). However, lack of knowledge about powder dispersion and deposition is still a major obstacle to further improve inhaler. In the current work, both the in vitro deposition experiments and numerical simulations were employed to investigate the performance of three different DPI channel designs. The powder model was co...

–The use of powder of calcined brick (PCB) as the low-cost adsorbents was investigated as a replacement for current costly methods of removing nickel ions from aqueous solutions. Batch adsorption studies were conducted to examine the effects of physico-chemical key parameters such as the stirring rate, initial metal ion concentration, pH, agitation time, particle size and adsorbent dosage on th...

Abstract Metal 3D printing technologies have made it possible to produce different parts, but the mechanical properties of parts connected using not yet been sufficiently studied. In study, 316L stainless steel was laser powder deposited (DED) with cladding head on bed fusion (PBF-LB) printed and joint investigated experimentally. The microstructure examined from cross-sections by optical micro...

Using X-ray diffraction (XRD), it was confirmed that the deposition of hole-transporting materials (HTM) on a CH3NH3PbI3 perovskite layer changed the CH3NH3PbI3 perovskite crystal, which was due to the material exchanging phenomena between the CH3NH3PbI3 perovskite and HTM layers. The solvent for HTM also changed the perovskite crystal. In order to suppress the crystal change, doping by chlorid...

Abstract The authors have studied the effect of solid-state nanoparticle-based modification on structure zinc oxide powders. To carry out experiment, seven types nanoparticles various oxides were applied. was performed by heating powder mixtures in air at 650°C for 2 hours. concentration nanopowders 10 wt.%, average grain size varied from to 80 nm. It established that high-temperature does not ...

Self-standing carbon-based substrates with satisfied structural stability and property adjustability have promising applications in flexible lithium (Li) metal batteries (FLMBs). Current strategies for modifying carbon materials are normally carried out on powder carbon, very few of them suitable self-standing substrates. Herein, a pore-forming strategy based the redox chemistry metallic oxide ...

Solid-state nanopores have emerged as sensors for single molecules and these have been employed to examine the biophysical properties of an increasingly large variety of biomolecules. Herein we describe a novel and facile approach to precisely adjust the pore size, while simultaneously controlling the surface chemical composition of the solid-state nanopores. Specifically, nanopores fabricated ...

Plasma treatment of particles offers to tailor macroscopic powder properties like wettability, flowability or compactibility. Plasma activation normally leads to an enhanced wettability and the deposition of SiOx-like nanostructures on the substrate particle surface increases the flowability and compactibility. These different functionalities are investigated and compared for the polymer HDPE (...