American Chemical Society
am8b06482_si_001.pdf (1.48 MB)

Flexible Polymer–Carbon Nanotube Composite with High-Response Stability for Wearable Thermal Imaging

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journal contribution
posted on 2018-07-13, 00:00 authored by Mingyu Zhang, John T. W. Yeow
In this work, we report a wearable thermal detector based on poly­(vinyl alcohol) and carbon nanotube (CNT) composite via photo-thermoelectric effect. Passive room-temperature human body thermal imaging is demonstrated with optimum detectivity up to 4.9 × 106 cm Hz1/2 W–1. Highly stable photoresponse (variation < 4%) is obtained under a bending radius down to 3.5 mm. We also found that the detector photoresponse is influenced by the composite channel length because of Seebeck effect. This flexible, self-powered, and sensitive detector opens up opportunities for wearable thermal imaging and real-time health monitoring.