Surface Plasmon Resonance (SPR) has transformed medical diagnostics. This paper presents a highly sensitive SPR biosensor developed for the accurate detection of tuberculosis (TB) causing bacteria, Mycobacterium tuberculosis. By leveraging a novel hybrid structure incorporating black phosphorus and optimized material layers, the sensor achieved remarkable angular sensitivity, enabling rapid, label-free diagnosis with high precision. It can detect even trace amounts of bacteria, providing a powerful tool for faster and accurate TB screening.

The ease of fabrication and versatile use make capacitive sensors a popular choice. This work introduces a fully differential analogue read-out circuit for differential capacitive sensors, featuring an auto-balancing bridge with voltage-controlled capacitors (VCCs) and integral negative feedback. The interface achieved 102 mV/pF sensitivity, and a linearity error of 0.47%, with 8–11 ms dynamic response times. The design enhances sensitivity and linearity, reduces parasitic effects, and demonstrates strong potential for precision sensing.

Wearable sensors have garnered significant attention in recent years, particularly in the realm of personalized diagnostics and continuous health monitoring. This paper discusses the development of a wearable sweat-based sensor system for monitoring cystic fibrosis (CF) in patients. It offers a resolution of ±2 mV and sensitivity of 56.9 mV/dec, with an average power consumption of 350 micro watts. The sensor is a compact, energy-efficient, and developed for home use.