Fabrication and Hydrodynamic Characterization of a Microfluidic Device for Cell Adhesion Tests in Polymeric Surfaces

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Ponmozhi, J. (Autor) Outra; J. M. R. Moreira (Autor) Outra; F. J. Mergulhão (Autor) FEUP; João B. L. M. Campos (Autor) FEUP; J. M. Miranda (Autor) Outra

Revista

Título: Micromachines

Vol. 10 Nº 5

Páginas: 1-16

ISSN: 2072-666X

Editora: MDPI

Indexação

ISI Web of Knowledge - 1 Citação

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-00Q-HMM

DOI: 10.3390/mi10050303

Abstract (EN): A fabrication method is developed to produce a microfluidic device to test cell adhesion to polymeric materials. The process is able to produce channels with walls of any spin coatable polymer. The method is a modification of the existing poly-dimethylsiloxane soft lithography method and, therefore, it is compatible with sealing methods and equipment of most microfluidic laboratories. The molds are produced by xurography, simplifying the fabrication in laboratories without sophisticated equipment for photolithography. The fabrication method is tested by determining the effective differences in bacterial adhesion in five different materials. These materials have different surface hydrophobicities and charges. The major drawback of the method is the location of the region of interest in a lowered surface. It is demonstrated by bacterial adhesion experiments that this drawback has a negligible effect on adhesion. The flow in the device was characterized by computational fluid dynamics and it was shown that shear stress in the region of interest can be calculated by numerical methods and by an analytical equation for rectangular channels. The device is therefore validated for adhesion tests.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 16