Stacks of layers with periodical corrugations of interfaces as devices for document security

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00007064%3AK01__%2F19%3AN0000054" target="_blank" >RIV/00007064:K01__/19:N0000054 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11030/1103019/Stacks-of-layers-with-periodical-corrugations-of-interfaces-as-devices/10.1117/12.2520739.short?SSO=1" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11030/1103019/Stacks-of-layers-with-periodical-corrugations-of-interfaces-as-devices/10.1117/12.2520739.short?SSO=1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2520739" target="_blank" >10.1117/12.2520739</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stacks of layers with periodical corrugations of interfaces as devices for document security

Popis výsledku v původním jazyce

Abstrakt stati ve sborníku (viz R30) Protection of documents against tampering and counterfeiting can be accomplished by visually identifiable devices. A key requirement for them is that they should provide unique features enabling verification of authenticity. In stacks of layers with periodic undulations, diffraction and interference effects can be combined together with excitation of guided modes and long-range plasmons to provide large security potential. The studied stacks are composed of a hot-stamped HRI embossing foil, with or without a thin metal film deposited on the foil HRI coating, and they are embossed with diffraction gratings. Designs of stacks are analysed by dedicated numerical methods, with the gratings having sinusoidal profiles of the same modulation depth at each internal interface of the stack. The designs take into account aspects of practical producibility of final foil devices via embossing and vacuum deposition techniques. Corresponding experimentally realized samples are tested by angular and spectroscopic scatterometry.

Název v anglickém jazyce

Stacks of layers with periodical corrugations of interfaces as devices for document security

Popis výsledku anglicky

Abstrakt stati ve sborníku (viz R30) Protection of documents against tampering and counterfeiting can be accomplished by visually identifiable devices. A key requirement for them is that they should provide unique features enabling verification of authenticity. In stacks of layers with periodic undulations, diffraction and interference effects can be combined together with excitation of guided modes and long-range plasmons to provide large security potential. The studied stacks are composed of a hot-stamped HRI embossing foil, with or without a thin metal film deposited on the foil HRI coating, and they are embossed with diffraction gratings. Designs of stacks are analysed by dedicated numerical methods, with the gratings having sinusoidal profiles of the same modulation depth at each internal interface of the stack. The designs take into account aspects of practical producibility of final foil devices via embossing and vacuum deposition techniques. Corresponding experimentally realized samples are tested by angular and spectroscopic scatterometry.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/VI20172020051" target="_blank" >VI20172020051: Bezpečnostní hologramy využívající kombinaci difrakce a interference světla ve vrstevnatém prostředí fólie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Holography: Advances and Modern Trends VI - Proc. of SPIE Vol. 11030

ISBN

9781510627260

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

15

Strana od-do

1103019-1-1103019-15

Název nakladatele

The international society for optics and photonics (SPIE)

Místo vydání

Neuveden

Místo konání akce

Praha, Česká republika

Datum konání akce

1. 1. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000485115700037