April 22 - 26, 2024
Seattle, Washington
May 7 - 9, 2024 (Virtual)

Event Supporters

2024 MRS Spring Meeting
EL08.01.04

Temporal Vs Stable Plasmonic Anticounterfeit Tags for Structural Health Monitoring Studies

When and Where

Apr 22, 2024
9:15am - 9:30am
Room 340/341, Level 3, Summit

Presenter(s)

Co-Author(s)

Maha Ibrar1,Megan Knobeloch1,Zachery Mccurtain1,David Crandall1,Sara Skrabalak1

Indiana University Bloomington1

Abstract

Maha Ibrar1,Megan Knobeloch1,Zachery Mccurtain1,David Crandall1,Sara Skrabalak1

Indiana University Bloomington1
Proliferation of counterfeit goods has resulted in exorbitant economic fallout, device reliability issues, and health and safety concerns. Hence, developing anticounterfeit platforms has become imperative for reliable and cost-effective authentication, tracking of products, and detection of potential tamper activity. Here, we report covert anticounterfeit platforms where plasmonic nanoparticles (NPs) were used to develop tags to authenticate goods. The two platforms developed are Unique images and Physical Unclonable Functions (PUFs). Fabrication of Unique images entails assembling plasmonic nanoparticles in arrays with the help of templates, whereas PUFs result from light scattering from randomly drop casted NPs. These techniques allow critical goods to be facilely tagged, and the resultant pattern from either a nanoparticle assembly or individual NPs is analyzed with darkfield optical microscopy imaging. Au and Ag NPs were prioritized due to their tailorable optical responses in the visible spectrum. The sensitivity of metal nanoparticles (particularly Ag) to the environment was also leveraged as a monitor of structural health and to show evidence of tampering. Functionalized Ag NP inks were used to create tags that serve as temporal sensors where changes in color response were tracked with variable exposure times to ambient environmental conditions. These temporal sensors are authenticated with machine learning protocols that keep track of the optical changes with time.

Keywords

Ag | self-assembly

Symposium Organizers

Yao-Wei Huang, National Yang Ming Chiao Tung University
Min Seok Jang, Korea Advanced Institute of Science and Technology
Ho Wai (Howard) Lee, University of California, Irvine
Pin Chieh Wu, National Cheng Kung University

Symposium Support

Bronze
APL Quantum
Kao Duen Technology Corporation
Nanophotonics Journal

Session Chairs

Ho Wai (Howard) Lee
Pin Chieh Wu

In this Session