High-resolution 1D moirés as counterfeit security features

Victor J Cadarso; Sylvain Chosson; Katrin Sidler; Roger D Hersch; Jürgen Brugger

doi:10.1038/lsa.2013.42

Go to Nature Website

Your Location：

Home >

Browse articles >

High-resolution 1D moirés as counterfeit security features

Original Articles

- High-resolution 1D moirés as counterfeit security features
- Light: Science & Applications Vol. 2, Issue 3-4, (2013)
- Affiliations：
  
  1.Microsystems laboratory, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland
  2.Peripheral Systems Laboratory, EPFL, Lausanne 1015, Switzerland
- Author bio：
  
  Dr VJ Cadarso, EPFL STI IMT LMIS1 Station 17, 1015 Lausanne, Switzerland Email: juergen.brugger@epfl.ch
  Professor Jürgen Brugger, EPFL STI IMT LMIS1 Station 17, 1015 Lausanne, Switzerland Email: juergen.brugger@epfl.ch
- Funds：
- DOI：10.1038/lsa.2013.42
  CLC：
- Published：2013-12，
  
  Published Online：19 July 2013，
  
  Received：19 November 2012，
  
  Revised：01 February 2013，
  
  Accepted：18 March 2013
- Accepted：
Scan QR Code
Cadarso, V. J et al. High-resolution 1D moirés as counterfeit security features. Light: Science & Applications, 2, e86 (2013).
DOI：

Cadarso, V. J et al. High-resolution 1D moirés as counterfeit security features. Light: Science & Applications, 2, e86 (2013). DOI： 10.1038/lsa.2013.42.

摘要

Abstract

A moiré is an interference pattern that appears when two different periodic structures are overlaid. The image created is extremely sensitive to small variations in the original layers and is thus very interesting for anti-counterfeit protection. We present a microfabricated 1D moiré enabling complex high-resolution patterns as a significantly improved security feature that cannot be reproduced using standard printing methods. Furthermore

we demonstrate

theoretically and experimentally

that a microscopic deviation from the original design results in a macroscopic variation in the moiré that is clearly visible to the naked eye. The record resolution achieved in the elements fabricated and the increased design freedom

make these high-resolution moirés excellent candidates for a variety of visually appealing security applications.

关键词

Keywords

anti-counterfeitingmicro-optical devicesmoiré effectoptical security

references

Amidror I. The Theory of The Moiré Phenomenon. Vol. 1, Berlin: Springer; 2009.

Righi A. Sui fenomeni che si producono colla sovrapposizione di due reticoli e sopra alcune loro applicazioni.Nuovo Cimento; 1887/22: 10–34..

Oster G, Wasserman M, Zwerling C. Theoretical Interpretation of Moiré Patterns.JOSA1964;54: 169–175..

Durelli AJ, Parks VJ. Moiré Analysis of Strain. New York: Prentice-Hall; 1970.

Post D. Sharpening and multiplication of moiré fringes.Exp Mech1994;7: 154–159..

Takasaki H. Moiré topography.Appl Optics1970;6: 1467–1472..

Mikami O. New image rotation using moiré lenses.Jpn J App Phys1975;14: 1065–1066..

Hutley MC, Hunt R, Stevens RF, SavanderP. The moiré magnifier.Pure Appl Optics1994;3: 133–142..

Amidror I. A generalized fourier-based method for the analysis of 2D moiré envelope-forms in screen superpositions.J Mod Optics1994;41: 1837–1862..

Kamal H, Völkel R, Alda J. Properties of moiré magnifiers.Optical Eng1998;37: 3007–3014..

Steenblik RA, Hurt MJ. Unison Micro-optic Security Film. In: van Renesse RL, editior. Optical Security and Counterfeit Deterrence Techniques V.Proc SPIE2004;5310: 321–327..

Schilling A, Thomkin WR, Staub R, Hersch RD, Chosson S, Amidror I. Diffractive moiré features for optically variable devices. In: van Renesse RL, editior. Optical Security and Counterfeit Deterrence Techniques VI.Proc SPIE2006;6075: 1–12..

Hersch RD, Chosson S. Band moiré images. Proceedings of SIGGRAPH 04, ACM Computer Graphics, Annual Conference Series; 2004: 239–247.

Madou M. Fundamentals of Microfabrication. Boca Raton: CRC press; 1997.

Xia YN, Whitesides GM. Soft lithography.Annu Rev Mater Sci1998;28: 153–184..

Llobera A, Wilke R, Johnson DW, Buttgenbach S. Polymer microlenses with modified micromolding in capillaries (MIMIC) technology.IEEE Photon Technol Lett2005;17: 2628–2630..

Schilling A, Merz R, Ossmann C, Herzig HP. Surface profiles of reflow microlenses under the influence of surface tension and gravity.Opt Eng2000;39: 2171–2176..

Lorenz H, Despont M, Fahrni N, Brugger J, Vettiger P, Renaud P. High-aspect-ratio, ultrathick, negative-tone near-UV photoresist and its applications for MEMS.Sensor Actuat A Phys1998;64: 33–39..

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

Elastomeric lenses with tunable astigmatism

Related Author

Peter Liebetraut

Sebastian Petsch

Jens Liebeskind

Hans Zappe

Related Institution

Gisela and Erwin Sick Chair of Micro-optics, Department of Microsystems Engineering, University of Freiburg

⁰