wireless

KAUSTat: A Wireless, Wearable, Open-Source Potentiostat for Electrochemical Measurements

1 min read ·
Ahmad Rafiq, et al. "KAUSTat: A Wireless, Wearable, Open-Source Potentiostat for Electrochemical Measurements." 2019 IEEE SENSORS. IEEE 27, 2019, 1. Advanced technology is needed every day for wireless, wearable sensors/potentiostats to record real-time measurements and monitor the chemical processes and physiological signals of the human body. Most of the potentiostats present on the market work as “black boxes” without access to their internal structure and their limited information of circuitry makes it challenging to develop new measurement methods and further integration with other

A Compact, Passive Frequency-Hopping Harmonic Sensor Based on a Microfluidic Reconfigurable Dual-Band Antenna

1 min read ·
Liang Zhu, et al., "A Compact, Passive Frequency-Hopping Harmonic Sensor Based on a Microfluidic Reconfigurable Dual-Band Antenna," IEEE Sensors Journal, 2020, 1. We propose here a fully-passive wireless liquid sensor using a harmonic transponder, which comprises a dual-band microstrip antenna reconfigured by different types of liquids injected in a fluidic cavity. Different from traditional radio-frequency (RF) backscatter sensors, the proposed harmonic-transponder sensor (or harmonic sensor) receives frequency-hopped RF monotones and backscatters their second harmonics, with the peak