Abstract: An inductive-capacitive resonant sensor architecture includes an inductively-coupled extender (ICE) that can both increase read range and lessen the effects of reader/sensor misalignment. The ICE can include a first coil configured with respect to a resonant sensor and a second coil separated from the first coil and coupled to the first coil by electrical wires. An external reader can be arranged with respect to the second coil. This architecture can nearly eliminate misalignment issues between the external reader and the resonant sensor. The ICE can be implemented with a closed circuit design. Additional apparatus, systems, and methods are disclosed.

Abstract: According to various aspects, a resonator includes a paper base. The paper base includes a channel bounded by least partially infused wax into the paper base. The resonator further includes an electronically conductive segment physically contacting the paper base. The resonator further includes a hydrogel component coating at least a portion of the electronically conductive segment.

Abstract: The present disclosure provides a resonator system for detecting perspiration. The system includes a resonator. The resonator includes an electronically conductive segment. The resonator further includes a polymeric component coating at least a portion of the electronically conductive segment. The resonator further includes a fluidic channel component positioned adjacent to the polymeric component and comprising a microfluidic channel.

Abstract: Various embodiments relate to a resonator system that can be used to monitor proteins, cells, or small molecules in a container. A resonant sensor, embedded in or on the container, can have an inductive element and a capacitive element, where the container and resonant sensor are structured such that, when a concentration of the proteins, cells, or small molecules in the container changes, dielectric permittivity and conductivity of the proteins, cells, or small molecules contributes to capacitance of the resonant sensor to affect a resonant frequency shift of the resonant sensor. Interrogating the resonant sensor can be conducted wirelessly along with wirelessly transmitting data collected from the interrogation. Additional apparatus, systems, and methods are disclosed.

Abstract: Various embodiments relate to a resonator system that can be used to monitor proteins, cells, or small molecules in a container. A resonant sensor, embedded in or on the container, can have an inductive element and a capacitive element, where the container and resonant sensor are structured such that, when a concentration of the proteins, cells, or small molecules in the container changes, dielectric permittivity and conductivity of the proteins, cells, or small molecules contributes to capacitance of the resonant sensor to affect a resonant frequency shift of the resonant sensor. Interrogating the resonant sensor can be conducted wirelessly along with wirelessly transmitting data collected from the interrogation. Additional apparatus, systems, and methods are disclosed.