Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Authentication labels based on guided-mode resonant filters.

Mount-Learn Wu1, Che-Lung Hsu, Hsiao-Chin Lan

  • 1Department of Optics and Photonics, National Central University, Jhongli, Taiwan. mlwu@dop.ncu.edu.tw

Optics Letters
|June 19, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

An explainable machine learning framework for computable physiologic risk representation in preanesthetic assessment: Development and external validation.

International journal of medical informatics·2026
Same author

Axicon metalens for broadband light harvesting.

Nanophotonics (Berlin, Germany)·2024
Same author

Disentangling the impact of anthropogenic and natural processes on the environment in a subtropical subalpine lake catchment in northeastern Taiwan over the past 150 years.

The Science of the total environment·2023
Same author

Application of the paleolimnological method to assess metal contaminant distribution (As, Cu, Pb, Zn) in pulp mill stabilization basin sediments, Nova Scotia, Canada.

Environmental science and pollution research international·2021
Same author

Angular-insensitive optical filtering based on meta-GMR.

Optics express·2020
Same author

Macrofaunal control of microbial community structure in continental margin sediments.

Proceedings of the National Academy of Sciences of the United States of America·2020

This study demonstrates a novel guided-mode resonance (GMR) filter for secure authentication. The silicon nitride GMR filter exhibits wide angular tolerance, making it ideal for anti-counterfeiting applications.

Area of Science:

  • Photonics and Optical Engineering
  • Materials Science and Nanotechnology

Background:

  • Guided-mode resonance (GMR) filters offer label-free sensing and optical filtering capabilities.
  • Existing GMR filter designs often face limitations in angular tolerance and fabrication complexity.

Purpose of the Study:

  • To experimentally demonstrate a guided-mode resonance (GMR) filter with enhanced angular tolerance for authentication.
  • To explore the potential of free-standing silicon nitride membranes for GMR filter fabrication.

Main Methods:

  • Fabrication of a free-standing silicon nitride membrane using anisotropic wet etching.
  • Creation of simultaneous grating and waveguide structures on the membrane without a lower cladding layer.
  • Characterization of the filter's optical performance under unpolarized white light illumination.

Related Experiment Videos

Main Results:

  • The developed GMR filter exhibits a reflection resonance with a wide angular tolerance of +/-5 degrees at 629.5 nm.
  • The silicon nitride material's transparency in visible and infrared spectra is suitable for visible light applications.
  • The high refractive index of silicon nitride enables strongly modulated gratings and immunity to high angular deviation.

Conclusions:

  • The suspended-membrane-type GMR filter is a promising technology for secure authentication labels.
  • The demonstrated wide angular tolerance overcomes a key limitation in current GMR filter applications.
  • Anisotropic wet etching provides an effective method for fabricating these advanced optical filters.