| Titre : | Design of a highly ordered and uniform porous structure with multisized pores in film and particle forms using a template-driven self-assembly technique (2010) |
| Auteurs : | Asep Bayu Dani Nandiyanto, Auteur ; Nobuhiro Hagura, Auteur ; Ferry Iskandar, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Acta materialia (Vol. 58 N° 1, Janvier 2010) |
| Article en page(s) : | pp. 282–289 |
| Note générale : | Métallurgie |
| Langues : | Anglais |
| Tags : | Porous structure film particle Ultralow refractive index Spray-drying method Dip-coating |
| Résumé : | A highly ordered arrangement of pores with multiple sizes in film and particle forms was successfully prepared using the dip-coating and spray-drying methods, respectively. The template-driven self-assembly technique was effective when a combination of 5 nm silica (as a model of an inorganic nanoparticle) and two different sizes of monodispersed polystyrene (PS) spheres (as models of the template) were self-assembled to produce a composite silica/PS template. Heat treatment was then used to remove the PS, which produced the porous particle. A material with spherical pores in an “art-design” organization was produced. The size of the pores (large pore: 100–1000 nm; small pore: 30–200 nm) could be controlled simply by adjusting the PS size. Sufficient numbers of large/small pores made it possible to produce a material of ultralow density with an ultralow refractive index, because the multiple pores allocated free space, all of which was confirmed by calculation. |
| DEWEY : | 669 |
| ISSN : | 1359-6454 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S1359645409006016 |
