Ecoresorbable chipless temperature-responsive tag made from biodegradable materials for sustainable IoT.

ABSTRACT: Temperature monitoring within the cold chain, essential for safety of perishable products, typically employs devices such as battery-powered data loggers and radio-frequency identification tags. Such devices include non-eco-friendly components, posing challenges for their safe disposal and recycling. This study demonstrates the fabrication of a fully ecoresorbable, chipless, and wireless temperature-responsive tag, designed to irreversibly track temperature changes through a permanent shift in resonance frequency. The tag is printed on a customized moisture-resistant poly(β-hydroxybutyrate)-cellulose composite substrate. An RLC circuit made of printed zinc metallic traces, encapsulated with beeswax to prevent oxidation, enables seamless wireless operation. The tag utilizes bio-based phase-

SUBMITTER: Bourely J 

PROVIDER: S-EPMC12647737 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature