Ti, Ni and TiNi nanoparticles physically synthesized by Ar+ beam milling.
ABSTRACT When the size of a particle decreases around 100 nm or less, there is a change in properties from those shown in the bulk material. In this work approximately 3 nm nanoparticles of Ni, Ti and TiNi bimetallic are produced using physical vapor deposition (PVD). Nanoparticles are characterized by High Resolution Transmission Electron Microscopy (HRTEM), High Angle Annular Dark Field (HAADF), Electron Diffraction (ED). The results show that all nanoparticles maintain the same crystal structure of bulk material but a change in their lattice parameter is produced.
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ABSTRACT: The advent of nanotechnological products in the market, while holding great promise, is raising concerns in consumers. Therefore, this contribution will attempt to compare different particulate formulations and to answer whether their passive penetration into, and potential permeation through the skin may be possible or not. To this end, skin structure, composition, and penetration paths will be concisely reviewed. Parameters generally cited to affect skin absorption will be resumed and commented on from the perspective of potentially penetrating nanosized agents. These sections will provide the basis to understand what is fiction and what is reality.Journal of Pharmaceutical Sciences 09/2009; 99(1):21-50. · 3.13 Impact Factor