Multispectral upconversion nanoparticles for near infrared encoding of wearable devices

7Citations
Citations of this article
10Readers
Mendeley users who have this article in their library.

Abstract

Individual recognition technology such as iris recognition and bar coding has been extensively investigated for non-face-to-face authorization. However, there are still strong unmet needs for facile, rapid, and robust individual recognition. Here, we developed multispectral transparent films of upconversion nanoparticles (UCNPs) for near-infrared (NIR) encoding of wearable devices including contact lenses and patch devices. A multispectral UCNP film in a contact lens showed various luminescence colors of patterns under 980 nm NIR light irradiation and each color could be assigned to a specific code by RGB value analysis. The encoded film of UCNPs in the contact lens was successfully decoded by the RGB value analysis with a charge coupled digital (CCD) camera. Furthermore, the UCNP barcode film could be applied in the form of attachable barcode patches onto various substrates like porcine skin and paper currency. Taken together, we could confirm the feasibility of multispectral UCNP transparent films as a facile individual recognition platform for non-face-to-face authorization.

Cite

CITATION STYLE

APA

Lee, G., Mun, J., Choi, H., Han, S., & Hahn, S. K. (2021). Multispectral upconversion nanoparticles for near infrared encoding of wearable devices. RSC Advances, 11(36), 21897–21903. https://doi.org/10.1039/d1ra03572j

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free