Advanced Functional Materials· 2016Q1
Plasmonic Nanoparticles as a Physically Unclonable Function for Responsive Anti‐Counterfeit Nanofingerprints
- 412citations
- Q1SCImago
- 2016year
Short summary
Randomly deposited gold nanoparticles (Au NPs) create unique scattering patterns that function as unclonable optical 'nanofingerprints' for anti-counterfeit applications, easily produced but difficult to replicate.
AI-generated from the title and abstract; the full text is not read.
Key points
- Randomly deposited Au nanoparticles create unique, unclonable far-field scattering patterns for anti-counterfeit 'nanofingerprints'.
- The scattering patterns are easily produced but highly impractical to replicate.
- Au and Ag NP nanofingerprints exhibit detectable color changes in media with different refractive indices, enabling sensing capabilities.
- These nanofingerprints can function as tamper-evident and aging labels.
AI-generated from the title and abstract; the full text is not read.
Abstract
Far‐field scattering of randomly deposited Au nanoparticles (NPs) is demonstrated as a physically unclonable optical function for anti‐counterfeit applications in which the scattering patterns are easily produced yet impractical to replicate. Colloidal metal NPs are superb components for nanoscale labels owing to their small dimensions and intense far‐field scattering visible at wavelengths that depend on colloidal size, shape, composition, and their local environment. The feasibility of Au NP depositions as nanofingerprints is presented using a simple pattern matching algorithm. These NPs offer extended functionality as environmental sensors. Taking advantage of the local refractive index dependent scattering wavelengths of metal NPs, a detectable color change is also demonstrated from a nanofingerprint comprised of Au and Ag NPs when placed in media with different refractive index. The facile deposition method coupled with the intense scattering and optical response of metal NPs provides physically unclonable tags (nanofingerprints) with the ability to serve as tamper‐evident and aging labels.
The authors' abstract, as published at the source. Advanced Functional Materials, 2016 · DOI ↗
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Field: Hardware and Architecture
Hardware and ArchitectureComputer Science