A Comparative Analysis of Thermal Flow Sensing in Biomedical Applications

TL;DR

This paper reviews thermal flow sensing technologies in biomedical applications, highlighting recent advancements in miniaturization, sensitivity, and integration, with a focus on their use in diagnostics, drug delivery, and movement monitoring.

Contribution

It provides a comprehensive comparison of various thermal flow sensing modes and transduction methods tailored for biomedical applications, emphasizing design simplicity and technological progress.

Findings

Thermal flow sensors are widely used in biomedical diagnostics and monitoring.

Miniaturization has improved sensitivity and integration capabilities.

A comparative analysis of sensing technologies is presented.

Abstract

Flow sensors have diverse applications in the field of biomedical engineering and also in industries. Micromachining of flow sensors has accomplished a new goal when it comes to miniaturization. Due to the scaling in dimensions, power consumption, mass cost, sensitivity and integration with other modules such as wireless telemetry has improvised to a great extent. Thermal flow sensors find wide applications in biomedical such as in hydrocephalus shunts and drug delivery systems. Infrared thermal sensing is used for preclinical diagnosis of breast cancer, for identifying various neurological disorders and for monitoring various muscular movements. In this paper, various modes of thermal flow sensing and transduction methods with respect to different biomedical applications are discussed. Thermal flow sensing is given prime focus because of the simplicity in the design. Finally, a comparison of flow sensing technologies is also presented.