ArticleScientific reports2018
Dot-Matrix Hologram Rendering Algorithm and its Validation through Direct Laser Interference Patterning.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Nanooptical elements for visual verification.Scientific reports · 2021Article
- Wettability control of polymeric microstructures replicated from laser-patterned stamps.Scientific reports · 2020Article
- Development of an Analytical Model for Optimization of Direct Laser Interference Patterning.Materials (Basel, Switzerland) · 2020Article
- Picosecond Laser Interference Patterning of Periodical Micro-Architectures on Metallic Molds for Hot Embossing.Materials (Basel, Switzerland) · 2019Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The fight against forgery of valuable items demands efficient and reasonably priced solutions. A security tag featuring holographic elements for anti-counterfeiting is one of them. However, the content and colours of a diffraction image that would be seen by an observer are often counterintuitive in the design stage. Here, we propose an original algorithm based on the conical diffraction formalism, which can be used to describe the variations of a diffraction image with respect to all aspects of observation. We validate the output of the algorithm by comparing it to test holograms, which we have produced by employing direct laser interference patterning (DLIP) in electrochemically grown nickel foil. We have employed a motorized femtosecond laser system to micro-machine arrays of 65 µm × 65 µm sized diffraction gratings with a defined orientation and pitch on the order of 1 µm. Based on completed diffraction efficiency measurements, we determined optimal ablation parameters, i.e. 57.4 mJ/cm
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Registered trials
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