Journal
ACS SENSORS
Volume 5, Issue 6, Pages 1548-1554Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.0c00563
Keywords
wearable; Janus textiles; bands; sweat; electrochemical detection
Funding
- National Natural Science Foundation of China [21804007, 21890742]
- Beijing Natural Science Foundation [2184109]
- Fundamental Research Funds for Central Universities [FRF-TP-17-066A1]
- National Postdoctoral Innovative Talents Support Program of China [BX20180036]
- China Postdoctoral Science Foundation [2019M650479]
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Wearable sweat sensors have spearheaded the thrust toward personalized health monitoring with continuous, real-time, and molecular-level insight in a noninvasive manner. However, effective sweat sampling still remains a huge challenge. Here, we introduce an intelligent Janus textile band that bridges the gap between self-pumping sweat collection, comfortable epidemic microclimate, and sensitive electrochemical biosensing via an integrated wearable platform. The dominant sweat sampling configuration is a textile with Janus wettability, which is fabricated by electrospinning a hydrophobic polyurethane (PU) nanofiber array onto super-hydrophilic gauze. Based on a contact-pumping model, the Janus textile can unidirectionally and thoroughly transport sweat from skin (hydrophobic side) to embedded electrode surface (hydrophilic side) with epidemic comfort. On-body experimentation reveals that the sensitive detection of multiple biomarkers including glucose, lactate, K+, and Na+ is achieved in the pumped sweat. Such smart Janus textile bands can effectively drain epidermal sweat to targeted assay sites via interface modifications, representing a reinforced and controlled biofluids analysis pathway with physiological comfort.
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