Wireless Flexible Potentiometric Microsensors for Temperature-Compensated Sweat Electrolyte Monitoring DOI Creative Commons
Jimin Lee,

Leel Mazal Liberty,

Ira Soltis

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 10, 2025

Sweat electrolyte analysis using potentiometric systems is a promising approach for continuous health monitoring. However, despite its potential, temperature-induced measurement errors remain critical challenge, and, to our knowledge, no study has effectively addressed this issue accurate sensing during physiological activities. Here, we present temperature-compensated flexible microsensor integrated with wireless circuit real-time sweat analysis. The wearable system features an array of microsensors simultaneous detection pH, Na+, K+, and skin temperature, enabling dynamic temperature compensation. A PEDOT:PSS/graphene ion-to-charge transducer enhances sensitivity through superior electron acceptor properties expanded electroactive surface area. incorporation Nafion top layer ensures 2-week-long stability by facilitating selective cation transport while mitigating sensor degradation. With compensation, the device measures level electrolytes under extreme variations (8 56 °C), including outdoor exercises exposure dry saunas, assess necessity correction. This work collectively establishes robust, high-performance platform monitoring biomarkers, thus advancing diagnostic technology personalized healthcare applications.

Language: Английский

Wireless Passive Flexible Radio Frequency Tactile Sensor for Material Recognition DOI

Enkang Wu,

Jun‐Ge Liang, Nam‐Young Kim

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Developing intelligent tactile systems for perceiving the real world is significant electronic skin and wearable devices. However, avoiding complex circuitry achieving lightweight wireless devices remain challenging. This study presents a biomimetic, ultrasensitive, multifunctional radio frequency sensor (WiRFTS), which comprises porous polyaniline-polydimethylsiloxane (PANI-PDMS) sponge, pressure electrodes, communication coil. Benefiting from synergistic effect of microstructure high dielectric PANI particles, WiRFTS exhibits an ultrahigh sensitivity 1.394 MHz/kPa (<10 kPa), linear 0.319 (10-200 resolution 0.28%. Especially, electromagnetic field at surface endows it with exceptional spatial perception. A noncontact material cognition system established by combining artificial intelligence algorithms, 100% recognition accuracy eight materials. Extensive RF-based properties ensures surpasses other technologies in identification diversity.

Language: Английский

Citations

0
Wireless Flexible Potentiometric Microsensors for Temperature-Compensated Sweat Electrolyte Monitoring DOI Creative Commons
Jimin Lee,

Leel Mazal Liberty,

Ira Soltis

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 10, 2025

Sweat electrolyte analysis using potentiometric systems is a promising approach for continuous health monitoring. However, despite its potential, temperature-induced measurement errors remain critical challenge, and, to our knowledge, no study has effectively addressed this issue accurate sensing during physiological activities. Here, we present temperature-compensated flexible microsensor integrated with wireless circuit real-time sweat analysis. The wearable system features an array of microsensors simultaneous detection pH, Na+, K+, and skin temperature, enabling dynamic temperature compensation. A PEDOT:PSS/graphene ion-to-charge transducer enhances sensitivity through superior electron acceptor properties expanded electroactive surface area. incorporation Nafion top layer ensures 2-week-long stability by facilitating selective cation transport while mitigating sensor degradation. With compensation, the device measures level electrolytes under extreme variations (8 56 °C), including outdoor exercises exposure dry saunas, assess necessity correction. This work collectively establishes robust, high-performance platform monitoring biomarkers, thus advancing diagnostic technology personalized healthcare applications.

Language: Английский

Citations

0