UTFacultiesEEMCSDisciplines & departmentsBIOSResearchBiomedical microdevices (Loes Segerink)

Introduction: Biomedical microdevices

The focus of this theme is on the development of microfluidic systems for (bio)-medical applications, thereby increasing the knowledge of biological systems and improving the diagnostics and treatment of diseases. Microfluidics are a perfect tool for this, since dimensions comparable to single cells are used, low sample volumes are needed and multiple functionalities can be integrated in one platform. As an example electrodes can be integrated in in these devices, making electrical measurements on single cells such as sperm cells, or a tissue layer like the blood-brain barrier possible. By carefully analyzing these electrical signals, information about the morphology of the sperm cell or tightness of the tissue layer can be retrieved, which can be used to gain information about the semen quality or the functioning of the blood-brain barrier. Additional useful information can be retrieved form (automated) optical analysis using for instance fluorescence or bright field microscopy. So using these and other (new) techniques in combination with microfluidics, biomedical microdevices are developed that can finally be of use in the clinic. There are collaborations with other research groups at this and other universities, but also with doctors at the hospital, making it an applied multidisciplinary research area.

Within this theme, there are several focus areas:

Fertility chip

One out of six couples face involuntary childlessness. Semen analysis is one of the first step in the search for a treatment for such couple. For this the concentration, motility and morphology of spermatozoa are determined, but it has limitations in predicting pregnancy. In this theme we want to to improve the treatment of (sub)fertile men by developing microfluidic systems for analysis and treatment.

The picture shows a trapped spermatozoon on a protein island (https://doi.org/10.1039/C4LC00050A)

Technical challenges in organ on chip

Organ on chips are useful tools to investigate the effect of (new) drugs on the tissue and to get more insight in (dys)functioning of it. By integrating sensors and electrodes in these system, real-time measurements can be performed, revealing more information.

Biomarker detection

Detection (the presence) of biomarkers can be useful for diagnostic purposes, but also at the crime scene. Measuring these biomarkers in a microfluidic chip has several advantages,  thereby making point-of-care measurement possible. Examples of projects in this theme is: microfluidics for early cancer diagnostics and microfluidics for the crime scene.

Other application areas

Besides the fertility chip, organ on chip and biomarker detection, microfluidic devices are also developed for drug screening for brain stem cancer. Furthermore also miniaturized sensors are developed for different applications, such as erectile dysfunction. Additionally the use of microfluidic devices is not only limited to medical applications. Also research to protoplasts can benefit from miniaturization. 


Prof. dr. ir. Loes Segerink
+31 (0)53 489 4541
 l.i.segerink@utwente.nl