Abstract
Moirés have been increasingly applied to create novel security features typically implemented by means of printing techniques, which achieve a resolution up to 2000 dpi. However, this resolution is not sufficient to effectively prevent counterfeits by desktop scanners and printers. In this paper we propose and demonstrate the design and cost-efficient fabrication of moiré-based security features with a new record resolution of 9754 dpi by means of micro-fabrication techniques. The moirés presented in our work are designed to exhibit macroscopic visible distortions for small deviations (1 μm in period) from the ideal design, increasing drastically the difficulty to counterfeit them.
Original language | English |
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Title of host publication | 2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 |
Publisher | IEEE, Institute of Electrical and Electronics Engineers |
Pages | 2696-2699 |
Number of pages | 4 |
ISBN (Print) | 9781467359818 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
Event | International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers & Eurosensors 2013) - Centro de Convenciones Internacional de Barcelona (CCIB), Barcelona, Spain Duration: 16 Jun 2013 → 20 Jun 2013 Conference number: 17th https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=30951 |
Conference
Conference | International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers & Eurosensors 2013) |
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Abbreviated title | TRANSDUCERS and EUROSENSORS XXVII |
Country/Territory | Spain |
City | Barcelona |
Period | 16/06/13 → 20/06/13 |
Internet address |
Keywords
- Anti-counterfeiting
- Micro-optical devices
- Moiré effect
- Optical security