• Categoría: Artículo
  • Título: Microfluidic flow spectrometer
  • Autor (es): Pamela Vázquez-Vergara, Aimee M Torres Rojas, Pablo E Guevara-Pantoja, Eugenia Corvera Poiré and Gabriel A Caballero-Robledo
  • Revista: Journal of Micromechanics and Microengineering
  • Volumen: 27
  • Páginas: 10
  • Formato: Enlace
  • Subido por: Pamela

Microfluidic flow spectrometer

Pamela Vázquez-Vergara, Aimee M Torres Rojas, Pablo E Guevara-Pantoja, Eugenia Corvera Poiré and Gabriel A Caballero-Robledo

We present a microfluidic device which allows one to study the dynamics of oscillatory

flows for a frequency range between 1 and 300 Hz. The fluid in the microdevice could be

Newtonian, viscoelastic, or even a biofluid, since the device is made of PMMA, which makes

it biocompatible and free of elastomeric elements. Coupling a piezoelectric to a micropiston

allows one to impose periodic movement to the fluid, with zero mean flow and amplitudes

of up to 20 µm, within the microchannels in which the dynamics is studied. The use of a fast

camera coupled to a microscope allows one to study the dynamics of 1 µm tracer particles and

interfaces at an image acquisition rate as fast as 5000 frames per second. The fabrication of the

device is easy and cost-effective, since it is based on the use of a micromilling machine. The

dynamics of a Newtonian fluid is studied as a proof of principle.