Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions
Abstract Counterfeit identity (ID) documents pose a serious threat to personal credit and national security. As a promising candidate, optical physical unclonable functions (PUFs) offer a robust defense mechanism against counterfeits. Despite the innovations in chemically synthesized PUFs, challenge...
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| Format: | Article |
| Language: | English |
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202411449 |
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| author | Panpan Niu Jiao Geng Qilin Jiang Yangyundou Wang Jianxin Sang Zhenghong Wang Liping Shi |
| author_facet | Panpan Niu Jiao Geng Qilin Jiang Yangyundou Wang Jianxin Sang Zhenghong Wang Liping Shi |
| author_sort | Panpan Niu |
| collection | DOAJ |
| description | Abstract Counterfeit identity (ID) documents pose a serious threat to personal credit and national security. As a promising candidate, optical physical unclonable functions (PUFs) offer a robust defense mechanism against counterfeits. Despite the innovations in chemically synthesized PUFs, challenges persist, including harmful chemical treatments, low yields, and incompatibility of reaction conditions with the ID document materials. More notably, surface relief nanostructures for PUFs, such as wrinkles, are still at risk of being replicated through scanning lithography or nanoimprint. Here, a femtosecond laser‐induced recrystallized silicon nanotexture is reported as latent PUF nanofingerprint for document anti‐counterfeiting. With femtosecond laser irradiation, nanotextures spontaneously emerge within 100 ms of exposure. By introducing a low‐absorption metal layer, surface plasmon polariton waves are excited on the silicon‐metal multilayer nanofilms with long‐range boosting, ensuring the uniqueness and non‐replicability of the final nanotextures. Furthermore, the femtosecond laser induces a phase transition in the latent nanotexture from amorphous to polycrystalline state, rather than creating replicable relief wrinkles. The random nanotextures are easily identifiable through optical microscopy and Raman imaging, yet they remain undetectable by surface characterization methods such as scanning electron and atomic force microscopies. This property significantly hinders counterfeiting efforts, as it prevents the precise replication of these nanostructures. |
| format | Article |
| id | doaj-art-35c75055f7104f228458fdf4f14b260f |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-35c75055f7104f228458fdf4f14b260f2025-01-09T11:44:46ZengWileyAdvanced Science2198-38442025-01-01121n/an/a10.1002/advs.202411449Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable FunctionsPanpan Niu0Jiao Geng1Qilin Jiang2Yangyundou Wang3Jianxin Sang4Zhenghong Wang5Liping Shi6Hangzhou Institute of Technology Xidian University Hangzhou 311231 ChinaHangzhou Institute of Technology Xidian University Hangzhou 311231 ChinaHangzhou Institute of Technology Xidian University Hangzhou 311231 ChinaHangzhou Institute of Technology Xidian University Hangzhou 311231 ChinaShanghai Guanzhong Optical Technology Co., Ltd. Shanghai 201900 ChinaShanghai Guanzhong Optical Technology Co., Ltd. Shanghai 201900 ChinaHangzhou Institute of Technology Xidian University Hangzhou 311231 ChinaAbstract Counterfeit identity (ID) documents pose a serious threat to personal credit and national security. As a promising candidate, optical physical unclonable functions (PUFs) offer a robust defense mechanism against counterfeits. Despite the innovations in chemically synthesized PUFs, challenges persist, including harmful chemical treatments, low yields, and incompatibility of reaction conditions with the ID document materials. More notably, surface relief nanostructures for PUFs, such as wrinkles, are still at risk of being replicated through scanning lithography or nanoimprint. Here, a femtosecond laser‐induced recrystallized silicon nanotexture is reported as latent PUF nanofingerprint for document anti‐counterfeiting. With femtosecond laser irradiation, nanotextures spontaneously emerge within 100 ms of exposure. By introducing a low‐absorption metal layer, surface plasmon polariton waves are excited on the silicon‐metal multilayer nanofilms with long‐range boosting, ensuring the uniqueness and non‐replicability of the final nanotextures. Furthermore, the femtosecond laser induces a phase transition in the latent nanotexture from amorphous to polycrystalline state, rather than creating replicable relief wrinkles. The random nanotextures are easily identifiable through optical microscopy and Raman imaging, yet they remain undetectable by surface characterization methods such as scanning electron and atomic force microscopies. This property significantly hinders counterfeiting efforts, as it prevents the precise replication of these nanostructures.https://doi.org/10.1002/advs.202411449anti‐counterfeitingfemtosecond lasernanotexturephysical unclonable functionssilicon |
| spellingShingle | Panpan Niu Jiao Geng Qilin Jiang Yangyundou Wang Jianxin Sang Zhenghong Wang Liping Shi Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions Advanced Science anti‐counterfeiting femtosecond laser nanotexture physical unclonable functions silicon |
| title | Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions |
| title_full | Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions |
| title_fullStr | Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions |
| title_full_unstemmed | Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions |
| title_short | Femtosecond Laser‐Induced Recrystallized Nanotexturing for Identity Document Security With Physical Unclonable Functions |
| title_sort | femtosecond laser induced recrystallized nanotexturing for identity document security with physical unclonable functions |
| topic | anti‐counterfeiting femtosecond laser nanotexture physical unclonable functions silicon |
| url | https://doi.org/10.1002/advs.202411449 |
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