Archive

This study reports the identification of an electromagnetic perceptive gene (EPG) from glass catfish and its expression in mammalian cells, neuronal cultures, and rat brain. The authors report that magnetic/EMF stimulation remotely increased intracellular calcium in EPG-expressing cells and neurons. They also report…

This engineering study describes miniaturized, flexible, battery-free wearable pulse oximetry systems that use near-field communication (NFC) for wireless operation. The devices capture and transmit photoplethysmograms to derive blood oxygenation, heart rate, and heart rate variability. The abstract reports…

This engineering study uses a 3D electromagnetic solver to simulate in-to-out body RF path loss for a wireless capsule endoscopy link. The capsule antenna is tuned for the 402 MHz MICS band while accounting for human body properties. The authors examine how capsule misalignment, rotation, and the human body model…

This conference paper reports an engineering approach to convert wireless microwave power into near-infrared light using a miniaturized, wirelessly powered laser. The device is described as millimeter-scale and capable of being powered through >1 cm of tissue. The abstract focuses on enabling in vivo activation of…

This engineering conference paper describes a method for controlling the locomotion of swallowable wireless capsule endoscopy devices using a dynamic magnetic field generated by external coils. A permanent magnet embedded in the capsule is manipulated by adjusting external field strengths to maintain equilibrium for…

This engineering paper presents an experimentally validated wearable personal exposimeter system for RF-EMF exposure monitoring, motivated by increasing wireless applications. It uses a distributed measurement approach and integrates inertial sensors to capture activity and posture during measurements. The system is…

This paper describes development of a fully implantable biotelemetry system that wirelessly transmits cardiac biomechanical force data along with ECG. The system uses a microcontroller with a bidirectional RF transceiver and was tested in a porcine model. The authors report successful transmission and recording of…

The paper describes the development of RF-shielded hats using a microwave absorbing sheet intended to reduce EMF exposure to a cameraman’s head. Three hat designs are described, and measurements are planned/performed in an anechoic chamber using a wireless video camera operating around 1.9–2.7 GHz, including a 2.45…

This engineering study assesses optimal RF frequencies for wireless communication with intraoral electronic devices using an intraoral tongue drive system as an example. It compares 27 MHz, 433.9 MHz, and 2.48 GHz based on path loss, radiation patterns, and bit error rate tests, with adaptive impedance matching…

This paper describes development and testing of a Wi-Fi–enabled tele-localisation prototype for radiotherapy field localisation using a personal digital assistant (PDA). Trial tests on 30 subjects across multiple treatment regions reported localisation times under 1.5 minutes and similar transmission speeds across…

This engineering paper presents an intraoral version of the Tongue Drive System (iTDS) built into a dental retainer. It uses four 3-axis magnetoresistive sensors to detect tongue motion and transmits digitized data wirelessly via a dual-band 27/432 MHz transmitter, with configuration updates via a 13.56 MHz inductive…

This engineering paper describes a mm-scale implantable device that is wirelessly powered and remotely controlled to locomote in a fluid medium. The prototype is reported to receive 500 µW from a 2 W, 1.86 GHz RF power signal at 5 cm and to support 2.5–25 Mbps data rates using asynchronous PWM on the carrier. The…

This paper describes an engineering device for wireless microscopy using a mobile phone and a WiFi system. The system allows recording, displaying, and storing microscopic images from a remote end via wireless LAN. Conceptual demonstrations are reported for monitoring common objects and liver cancer cells, with…

This engineering paper describes a wireless implementation of a near-infrared profiling sensor using multiple sensor nodes and a base station for data preprocessing and realignment. It reports an enhanced classification approach using a back-propagation neural network to categorize objects as human, animal, or…

This engineering study evaluated long-term encapsulation and packaging reliability of a fully wireless 100-channel Utah Slant Electrode Array system in vitro. The device was soaked in PBS for over 12 months while being wirelessly powered/configured at 2.765 MHz and transmitting an FSK-modulated 900 MHz RF signal. The…

This paper describes the design and preliminary implementation of a mobile-phone-based wireless blood pressure monitoring system that transmits data via Bluetooth and computes blood pressure and heart rate on the phone. The authors state that experiments demonstrated the device’s reliability and stability, and that…

This engineering paper proposes a control method for a photo-electromagnetic field (EMF)-based ammonia gas sensor that uses a wireless network and adjusts illumination light intensity. It reports that measurement error is minimized over 3800 ppm ammonia when the concentration corresponds to an optimal illumination…

This engineering study develops and experimentally evaluates a fuzzy-logic method for locating mobile robots in an intelligent space using wireless sensor networks. Localization relies on inter-node range measurements estimated from RF signal strength attenuation, which the authors describe as noisy and unreliable.…

This engineering paper describes a system implementation for interoperation between a 915 MHz UHF RFID reader and a TCP/IP gateway device. The architecture uses wired communication between the TCP/IP device and RFID reader, and wireless ZigBee (IEEE 802.15.4) links to an end-device/coordinator. Web-based tests are…