Sensors for blood brain barrier on a chip.

The blood-brain barrier (BBB) is a highly selective membrane that regulates the passage of substances between the bloodstream and the brain, thus safeguarding the central nervous system. This chapter provides an overview of current experimental models and detection methods utilized to study the BBB, along with the implementation of sensors and biosensors in BBB research. We discuss static and dynamic BBB models, highlighting their respective advantages and limitations. Additionally, we examine various detection methods employed in BBB research, including those specific to static and dynamic models. Furthermore, we explore the applications of physical sensors and biosensors in BBB models, focusing on their roles in monitoring barrier integrity and function. We also discuss recent advancements in sensor integration, such as robotic interrogators and integrated electrochemical and optical biosensors. Finally, we present a brief conclusion and future outlook, emphasizing the importance of continued innovation in BBB research to advance our understanding of neurological disorders and drug development.