Work

A hybrid acoustofluidic device with Parafilm® that operates as a traditional bulk acoustic wave or flexural plate wave device

Year: 2025

Type: article

Abstract: In this article we describe new hybrid microfluidic acoustic devices (HMADs) composed of two types of materials: soft elastic lateral walls made of Parafilm® that include a channel, and rigid top and bottom walls consisting of a glass slide and a glass coverslip. Depending on the selected vibration frequency of two small piezoelectric transducers, these HMADs can operate as Bulk Acoustic Wave (BAW) or as Flexural Plate Wave (FPW) devices, which induce either levitating circular or linear particle aggregates at higher frequencies when operating as BAW-like devices, or at acoustic frequencies close to those of the transducer's thickness mode when operating as FPW-like devices. The use of a soft, elastic material permits a range of different geometrical channel configurations. These HMADs in the BAW-like mode induce the formation of very stable aggregates, and in the FPW-like mode allow manipulation and control of the position or angular motion of particles and cells with micrometric precision when a phase change is induced between the two transducers.

Source: RSC Advances

DOI: 10.1039/d5ra02351c

Authors: Abelino Vargas Jiménez, Diana Carolina Ochoa Cabezas, Michael Delay, Itziar González Gómez, Marcela Camacho

Institutions: Universidad Nacional de Colombia, Universidad Pedagógica Nacional, University of La Salle, Consejo Superior de Investigaciones Científicas, Instituto de Tecnologías Físicas y de la Información “Leonardo Torres Quevedo”

Language: English

Topic: Microfluidic and Bio-sensing Technologies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: Universidad de La Salle, Ministerio de Ciencia, Tecnología e Innovación, De La Salle University, Universidad Nacional de Colombia