Inductive Locating Method to Locate Miniaturized Wireless Sensors within Inhomogeneous Dielectrics For the measurement of process data in bioreactors, very small wireless sensors are currently under development to replace the conventional rod probes. The socalled SensoSpheres measure the temperature and in future the oxygen content and the pH of fluids. In order to evaluate the distribution of the measured values within the process, it is necessary to locate the wireless sensors. Because of the small size of the sphere (diameter 8 mm), inhomogeneous ambient media and the size of the reactor (less than 2 m), an inductive locating by magnetic fields with a frequency of f  13.56 MHz is necessary. Since the behaviour of the magnetic field is very different from that of the electromagnetic wave, new locating methods are required, which are presented in this paper.

LCVoltageControlledOscillatorBased Biosensor in 180nm CMOS Process Targeting xcexb2Dispersion for Detecting Exosomes Recently, minimally invasive cancer care represented by liquid biopsy has attracted considerable interest. Some substances in blood, such as circulating tumor cells and exosomes, are receiving increasing attention as potential biomarkers for liquid biopsy. In this paper, we present an LCvoltagecontrolledoscillatorbased biosensor for detecting exosomes. In order to detect exosomes, we focused on dielectric xcexb2dispersion and utilized the frequency band in which xcexb2dispersion occurs. To validate the operation of the proposed system, we performed electromagnetic (EM) analysis. The results of EM simulation demonstrated the possibility of detecting exosomes. In addition, a test chip was fabricated in 180nm CMOS process. We performed the test chip measurement by adding a drop of water on the inductor, and an average measured frequency shift of 5.723 kHz was confirmed, which demonstrates the feasibility of the proposed biosensor in detecting exosomes.