Open AccessControlled nanostructures formation on stainless steel by short laser pulses for products protection against falsification
Author(s) -
Eduard Ageev,
Vadim P. Veiko,
E. A. Vlasova,
Yulia Karlagina,
A. Krivonosov,
M. K. Moskvin,
Г. В. Одинцова,
V. E. Pshenichnov,
В. В. Романов,
R. M. Yatsuk
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.002117
Subject(s) - laser , materials science , optics , nanosecond , wavelength , polarization (electrochemistry) , microstructure , laser scanning , optoelectronics , composite material , physics , chemistry
The coloration of stainless steel surface due to the formation of spatially periodic structures induced by laser pulses of nanosecond duration is demonstrated. The period of microstructures corresponds to the laser wavelength, and their orientation angle depends on the adjustment of laser polarization. The marking algorithm for the development of authentication patterns is presented. Such patterns provide several levels of protection against falsification (visual, colorimetric and structural) along with high recording speed and capability of automated reading.