Catálogo de publicaciones - tesis
Título de Acceso Abierto
Estudio del llenado capilar en estructuras nano-porosas mediante técnicas interferométricas
Luisa Guadalupe Cencha Raúl Urteaga Patrick Huber Hernán Pastoriza Luis Marcelino Gugliotta Claudio Luis Alberto Berli
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Resumen/Descripción – provisto por el repositorio digital
The dynamic of capillary imbibition of various polymers in porous silicon and anodic alumina matrices was studied using interferometric techniques. The analysis of the filling dynamics allows one to investigate the polymer viscosity under confinement. The applicability of the technique was validated with unentangled polymers, having relatively low viscosities. To the date, there are no reports on a technique providing the advantages here presented: high temporal-spatial resolution, precise information on the dynamics of imbibition even at the first instants of the process and simplicity of the experimental set-up with capability of adaptation to vacuum systems. The interplay between optics, fluid dynamics and material science fundamentals, allowed the development of a new technique, also based on interferometry, but with greater application capabilities. This allowed the study of polymers under confinement as a function of temperature, expanding the applicability to very high viscosity polymers. In addition, the same fundamentals boosted the invention and development of a microfabrication technique termed "Capillary Imbibition Laser Lithography". The method allows the manufacturing of porous microchannels through the selective imbibition of hot-melt materials in porous membranes, promoted by a localized heating of the material. The common requirement of high specific surface for the micro-devices, typical of porous materials, added to other advantages like avoiding bonding steps, makes this development attractive to the microfluidic technology market, which today beats 2000 million dolars, with a sustained growth predicted until 2025.Palabras clave – provistas por el repositorio digital
Microfluidics; Polymer flow; Confined polymers; Microfabrication; Porous materials; Interferometry; Microfluídica; Flujo de polímeros; Polímeros en confinamiento; Microfabricación; Materiales porosos; Interferometría
Disponibilidad
| Institución detectada | Año de publicación | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No requiere | 2018 | Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) |
|
Información
Tipo de recurso:
tesis
Idiomas de la publicación
- español castellano
País de edición
Argentina
Fecha de publicación
2018-12-19