Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

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

Effect of sodium hexametaphosphate on teeth.

Journal of dental research·2010

Same author

Effects of variation in the mercury-alloy ratio upon the amalgam filling.

Journal of dental research·2010

Same author

Studies on density of castings as related to the position in the ring.

Journal of dental research·2010

Same author

Yaks and yak-cattle hybrids in Asia.

The Journal of heredity·2010

Same author

Evaluation of species crosses of cattle by polyallel crossing; a study of zebu and Africander X Aberdeen-Angus cattle under subtropical conditions.

The Journal of heredity·2010

Same author

The multinipple trait in sheep.

The Journal of heredity·2010

Same journal

Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

Applied optics·2026

Same journal

High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

Applied optics·2026

Same journal

Automated stitching interferometry for high-precision metrology of X-ray mirrors.

Applied optics·2026

Same journal

Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

Applied optics·2026

Same journal

High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

Applied optics·2026

Same journal

Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

Applied optics·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 6, 2026

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition

Published on: August 29, 2017

Optical coatings for document security.

R W Phillips, A F Bleikolm

|December 4, 2010

Summary

This summary is machine-generated.

Optically variable inks, utilizing metal-dielectric multilayer thin films, offer robust security features. These advanced coatings prevent counterfeiting in currency and other applications due to their angle-dependent color shifts.

More Related Videos

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

TiO₂-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

Related Experiment Videos

Last Updated: Jun 6, 2026

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition

Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition

Published on: August 29, 2017

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

TiO₂-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

Area of Science:

Optics and Materials Science
Nanotechnology
Security Printing

Background:

Optical coatings with angle-dependent color properties are crucial for anti-counterfeiting measures.
Traditional security inks face challenges from advanced color reproduction technologies.
Metal-dielectric multilayer thin films offer unique optical characteristics.

Purpose of the Study:

To highlight the application of angle-variable optical coatings in security inks.
To explain the advantages of metal-dielectric multilayer structures for anti-copying technologies.
To showcase the use of these advanced coatings in protecting world currencies.

Main Methods:

Adaptation of angle-variable optical coatings into foils, pigments, and inks.
Fabrication of metal-dielectric multilayer thin-film structures.
Evaluation of optical properties such as color shift, chroma, color gamut, and light fastness.

Main Results:

Metal-dielectric multilayer thin films exhibit significant angle-dependent color shifts.
These structures possess high chroma and a large color gamut, enhancing visual security.
The thin films demonstrate excellent light fastness, ensuring durability.
Optically variable inks based on these films effectively prevent color copying.

Conclusions:

Metal-dielectric multilayer thin-film structures are uniquely suited for high-security ink applications.
These advanced optical coatings provide superior protection against counterfeiting compared to conventional methods.
The successful implementation in world currencies validates the efficacy of this technology.