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Mardani H, Mehrbakhsh S, Sheikhzadegan S, Babazadeh-Mamaqani M, Roghani-Mamaqani H. Colloidal Polymer Nanoparticles as Smart Inks for Authentication and Indication of Latent Fingerprints and Scratch. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1605-1615. [PMID: 38150585 DOI: 10.1021/acsami.3c16574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
An environmentally friendly smart ink was developed by incorporating fluorescein into functionalized poly(methyl methacrylate) (PMMA) nanoparticles synthesized using an emulsifier-free emulsion copolymerization approach. The functional comonomers of 2-(dimethylamino)ethyl methacrylate (DMAEMA), acrylamide, hydroxyethyl methacrylate, and glycidyl methacrylate in 10 wt % with respect to methyl methacrylate were used to obtain the functionalized colloidal PMMA nanoparticles. Functional groups of the latex nanoparticles were characterized by Fourier-transform infrared spectroscopy. Field emission scanning electron microscopy results showed that all of the latex nanoparticles have nearly spherical morphologies with variations in size and surface smoothness due to the presence of different comonomers. Ultraviolet-visible and fluorescence spectra indicated that the fluorescein-doped latex nanoparticles containing the DMAEMA comonomer had the highest absorbance and fluorescence intensity. In the alkaline media, fluorescein turns to a dianion, showing a red shift and increased absorbance in the UV-vis spectroscopy. In addition, the electron inductive characteristics of the tertiary amine groups result in enhancing the conjugation of fluorescein molecules and increasing the fluorescence intensities. Therefore, the colloidal nanoparticles with amine functional groups were used in the formulation of a smart ink with applications in securing documents and fingerprints, encrypting banknotes and money, detecting latent fingerprints, crafting anticounterfeiting paper, and eventually providing optical detection and indication of surface scratches.
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Affiliation(s)
- Hanieh Mardani
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box, Tabriz 51335-1996, Iran
| | - Sana Mehrbakhsh
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box, Tabriz 51335-1996, Iran
| | - Sina Sheikhzadegan
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box, Tabriz 51335-1996, Iran
| | - Milad Babazadeh-Mamaqani
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box, Tabriz 51335-1996, Iran
| | - Hossein Roghani-Mamaqani
- Faculty of Polymer Engineering, Sahand University of Technology, P.O. Box, Tabriz 51335-1996, Iran
- Institute of Polymeric Materials, Sahand University of Technology, P.O. Box, Tabriz 51335-1996, Iran
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Anwar A, Mur M, Humar M. Microcavity- and Microlaser-Based Optical Barcoding: A Review of Encoding Techniques and Applications. ACS PHOTONICS 2023; 10:1202-1224. [PMID: 37215324 PMCID: PMC10197175 DOI: 10.1021/acsphotonics.2c01611] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Indexed: 05/24/2023]
Abstract
Optical microbarcodes have recently received a great deal of interest because of their suitability for a wide range of applications, such as multiplexed assays, cell tagging and tracking, anticounterfeiting, and product labeling. Spectral barcodes are especially promising because they are robust and have a simple readout. In addition, microcavity- and microlaser-based barcodes have very narrow spectra and therefore have the potential to generate millions of unique barcodes. This review begins with a discussion of the different types of barcodes and then focuses specifically on microcavity-based barcodes. While almost any kind of optical microcavity can be used for barcoding, currently whispering-gallery microcavities (in the form of spheres and disks), nanowire lasers, Fabry-Pérot lasers, random lasers, and distributed feedback lasers are the most frequently employed for this purpose. In microcavity-based barcodes, the information is encoded in various ways in the properties of the emitted light, most frequently in the spectrum. The barcode is dependent on the properties of the microcavity, such as the size, shape, and the gain materials. Various applications of these barcodes, including cell tracking, anticounterfeiting, and product labeling are described. Finally, the future prospects for microcavity- and microlaser-based barcodes are discussed.
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Affiliation(s)
- Abdur
Rehman Anwar
- Department
of Condensed Matter Physics, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Maruša Mur
- Department
of Condensed Matter Physics, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Matjaž Humar
- Department
of Condensed Matter Physics, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- CENN
Nanocenter, Jamova 39, SI-1000 Ljubljana, Slovenia
- Faculty
of Mathematics and Physics, University of
Ljubljana, Jadranska
19, SI-1000 Ljubljana, Slovenia
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Ferraro A, Bruno MDL, Papuzzo G, Varchera R, Forestiero A, De Santo MP, Caputo R, Barberi RC. Low Cost and Easy Validation Anticounterfeiting Plasmonic Tags Based on Thin Films of Metal and Dielectric. NANOMATERIALS 2022; 12:nano12081279. [PMID: 35457987 PMCID: PMC9026069 DOI: 10.3390/nano12081279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/04/2022] [Accepted: 04/07/2022] [Indexed: 12/10/2022]
Abstract
Multilevel anticounterfeiting Physical Unclonable Function (PUF) tags based on thin film of silver (Ag), Zinc Oxide (ZnO) and PolyVinylPyrrolidone (PVP), are experimentally demonstrated and validated. We exploit the low adhesion of silver to glass and consequent degradation during ZnO deposition to induce morphological randomness. Several photographs of the tag surfaces have been collected with different illumination conditions and using two smartphones of diverse brand. The photos were analyzed using an image recognition algorithm revealing low common minutiae for different tags. Moreover, the optical response reveals peculiar spectra due to labels of plasmonic nature. The proposed systems can be easily fabricated on large areas and represent a cost-effective solution for practical protection of objects.
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Affiliation(s)
- Antonio Ferraro
- Physics Department, University of Calabria, 87036 Rende, Italy; (M.D.L.B.); (M.P.D.S.)
- Consiglio Nazionale delle Ricerche-Istituto di Nanotecnologia (CNR-Nanotec), 87036 Rende, Italy
- Correspondence: (A.F.); (A.F.); (R.C.); (R.C.B.)
| | - Mauro Daniel Luigi Bruno
- Physics Department, University of Calabria, 87036 Rende, Italy; (M.D.L.B.); (M.P.D.S.)
- Consiglio Nazionale delle Ricerche-Istituto di Nanotecnologia (CNR-Nanotec), 87036 Rende, Italy
| | - Giuseppe Papuzzo
- Consiglio Nazionale delle Ricerche-Institute for High Performance and Networking (CNR-ICAR), 87036 Rende, Italy;
| | | | - Agostino Forestiero
- Consiglio Nazionale delle Ricerche-Institute for High Performance and Networking (CNR-ICAR), 87036 Rende, Italy;
- Correspondence: (A.F.); (A.F.); (R.C.); (R.C.B.)
| | - Maria Penolope De Santo
- Physics Department, University of Calabria, 87036 Rende, Italy; (M.D.L.B.); (M.P.D.S.)
- Consiglio Nazionale delle Ricerche-Istituto di Nanotecnologia (CNR-Nanotec), 87036 Rende, Italy
| | - Roberto Caputo
- Physics Department, University of Calabria, 87036 Rende, Italy; (M.D.L.B.); (M.P.D.S.)
- Consiglio Nazionale delle Ricerche-Istituto di Nanotecnologia (CNR-Nanotec), 87036 Rende, Italy
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
- Correspondence: (A.F.); (A.F.); (R.C.); (R.C.B.)
| | - Riccardo Cristofaro Barberi
- Physics Department, University of Calabria, 87036 Rende, Italy; (M.D.L.B.); (M.P.D.S.)
- Consiglio Nazionale delle Ricerche-Istituto di Nanotecnologia (CNR-Nanotec), 87036 Rende, Italy
- Correspondence: (A.F.); (A.F.); (R.C.); (R.C.B.)
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Lee S, Kim H, Jeong Y. Angular distribution of luminescence dissymmetry observed from a random laser built upon the exocuticle of the scarab beetle Chrysina gloriosa. OPTICS EXPRESS 2021; 29:37712-37721. [PMID: 34808838 DOI: 10.1364/oe.438697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
We investigate the angular distribution of luminescence dissymmetry of random lasing in the mixture of rhodamine 6G and titanium dioxide nanoparticles upon a biocompatible natural material substrate, i.e., the elytron of the scarab beetle Chrysina gloriosa. We look into both green and gold-colored areas of the elytron that exhibit distinctly different circular dichroism properties. The fabricated sample asymmetrically emits both left- and right-handed circularly polarized light at 570 nm when pumped at 532 nm, depending on the direction of emission and the angle of the pump incidence. We characterize the light via measuring the angular distribution of its luminescence dissymmetry factor (g lum), which reaches an unusually high maximal value of 0.90 or -0.50 at some specific angle depending on the handedness of its polarization. This random laser source can be used in numerous potential optoelectronic applications which require light emission of distributed luminescence dissymmetry or of high luminescence dissymmetry.
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Ni Y, Wan H, Liang W, Zhang S, Xu X, Li L, Shao Y, Ruan S, Zhang W. Random lasing carbon dot fibers for multilevel anti-counterfeiting. NANOSCALE 2021; 13:16872-16878. [PMID: 34610058 DOI: 10.1039/d1nr04707h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Random lasers, which achieve light amplification through random light scattering in disordered laser gain medium, have found widespread applications in varieties of areas due to the convenient design of laser cavities. In this work, carbon dot fibers with superior fluorescence stability under a high temperature or high humidity environment are fabricated by using a single-step partial thermal decomposition method. Random lasers, which are used for multilevel anti-counterfeiting, are achieved from different types of carbon dot fibers by 370 nm excitation at room temperature. Multilevel anti-counterfeiting is realized by tuning the lasing spectra (between ∼428 and 560 nm) and threshold (between ∼2 and 25 mJ cm-2) at designated decomposition times and fiber diameters. It is extremely difficult to counterfeit lasing spectra and the specific laser threshold simultaneously. As a result, this will comprehensively improve system safety.
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Affiliation(s)
- Yiqun Ni
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Honghao Wan
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Wenqing Liang
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Shaofeng Zhang
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Xuesong Xu
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Ling Li
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Yonghong Shao
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shuangchen Ruan
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
| | - Wenfei Zhang
- Shenzhen Key Laboratory of Laser Engineering, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P. R. China.
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