Research press release


Nature Communications

Chemistry: A cost effective, wearable sensor for monitoring ultraviolet radiation



今回、Vipul Bansalたちの研究グループは、スペクトル選択的な超高感度UVセンサーの新しい作製方法を考案した。この新しい設計の秘密は、ポリオキソメタレートを用いた透明インクの開発にある。このインクは、スペクトル選択的なUVセンサーの独特な特性を示す。ろ紙と透明シート、万年筆といった低コストで入手しやすい材料を組み合わせて、ウエアラブルな紙製低コストUVセンサーが作られた。


A new strategy to produce low-cost sensors that allow ultrasensitive detection of ultraviolet radiation (UVR) by the naked-eye is described in Nature Communications this week. The sensors, which are paper-based and wearable, could enable users to manage the impact of UVR on their daily lives.

UVR can be classified into UVA, B and C by wavelength. To monitor the impact of different UV radiations, low-cost, spectrally-selective UV sensors are needed. However, current sensors are hindered from mass deployment owing to the cost and complexity of the processes used to create them.

Vipul Bansal and colleagues have devised a new approach for fabricating spectrally-selective and ultrasensitive UV sensors. The secret to their design is the creation of a polyoxometalate-based invisible ink. This ink shows unique properties for spectrally-selective UV sensing. When combined with low-cost and readily available components, such as filter papers, transparency sheets and a fountain pen, a wearable paper-based and low-cost UV sensor can be created.

The authors demonstrate the applicability of their new technology by developing customized paper-based, smiley, UV sensors that provide real-time dosimetry of maximum permissible exposure thresholds for each type of UVR for people with six different skin types. This suggests that the spectrally-selective UV sensors may have potential for large-scale fabrication, and can be tailored for specific skin types.

doi: 10.1038/s41467-018-06273-3

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