Electronics for Sensors

The aim of this Special Issue is to explore new advanced solutions in electronic systems and interfaces to be employed in sensors, describing best practices, implementations, and applications. The selected papers in particular concern photomultiplier tubes (PMTs) and silicon photomultipliers (SiPMs) interfaces and applications, techniques for monitoring radiation levels, electronics for biomedical applications, design and applications of time-to-digital converters, interfaces for image sensors, and general-purpose theory and topologies for electronic interfaces

Design optimization of a magnetomechanical system for drug delivery in wireless capsule endoscopy

There is an increasing interest in the research community and the pharmaceutical industry for the development of an on-demand drug delivery system (DDS) for capsule endoscopy. Such a system is essential for site-specific drug delivery in order to treat diseases in the gastrointestinal tract in a non-invasive way. Despite different attempts to magnetically actuate DDS, two main problems remain with such systems. The first one is related to the operating distance and the second one is concerned with the miniaturization of mechanisms inside the capsule endoscope (CE). In this paper, we present an optimization of external permanent magnets to address both problems. An array of magnets is optimally designed to compensate the loss of magnetic link due to longer operating distances and miniaturization of components in the CE. © 2014 IEEE