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Bibliografie tematiche / Multi-photon polymerization

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Letteratura scientifica selezionata sul tema "Multi-photon polymerization"

Autore: Grafiati

Pubblicato: 9 novembre 2024

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Articoli di riviste sul tema "Multi-photon polymerization"

1

Huang, Ying, Yusheng Zhang, Yuming Su, Zhenghao Zhai, Jiawei Chen e Cheng Wang. "Two-photon induced polymerization in a porous polymer film to create multi-layer structures". Chemical Communications 57, n. 37 (2021): 4516–19. http://dx.doi.org/10.1039/d1cc01383a.

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Lin, Jieqiong, Peng Liu, Xian Jing, Mingming Lu, Kaixuan Wang e Jie Sun. "Stochastic Multi-Molecular Modeling Method of Organic-Modified Ceramics in Two-Photon Induced Photopolymerization". Materials 12, n. 23 (24 novembre 2019): 3876. http://dx.doi.org/10.3390/ma12233876.

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Organic-modified ceramics (Ormocer) are an outstanding class of hybrid materials due to the fact of their various excellent properties, and they have been successfully used in two-photon polymerization microfabrication fields. A series of functional devices has been fabricated and widely used in aerospace, information science, biomedicine, and other fields. However, quantization of intermolecular energy during the fabrication process is still a difficult problem. A stochastic multi-molecular modeling method is proposed in this paper. The detailed molecular-interaction energies during the photon polymerization of Ormocer were obtained by molecular dynamics analysis. The established molecular model was verified by comparing the simulated shrinkage results with commercial calibrated ones. This work is expected to provide a reference for optimizing the fabrication of organically modified ceramics and reducing photoresist shrinkage in two-photon polymerization.

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Verbitsky, Lior, Nir Waiskopf, Shlomo Magdassi e Uri Banin. "A clear solution: semiconductor nanocrystals as photoinitiators in solvent free polymerization". Nanoscale 11, n. 23 (2019): 11209–16. http://dx.doi.org/10.1039/c9nr03086g.

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Semiconductor nanocrystals are shown as highly efficient quantum photoinitiators for solvent-and-additive-free polymerization with micromolar loading, surpassing traditional organic initiators. The new quantum photoinitiators demonstrate a two-photon polymerization capacity, allowing multi-functional microprinting.

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Glöckler, Felix, Florian Hausladen, Igor Alekseenko, Alexander Gröger, Giancarlo Pedrini e Daniel Claus. "Two-photon-polymerization enabled and enhanced multi-channel fibre switch". Engineering Research Express 3, n. 4 (11 novembre 2021): 045016. http://dx.doi.org/10.1088/2631-8695/ac34c5.

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Abstract This article discusses the fabrication and performance of a multi-channel fibre switch, consisting of 19 single-mode fibres, with enhanced coupling efficiency due to micro-optics, directly printed via two-photon-polymerization on the end-face of each fibre. The use of high-resolution two-photon-polymerization not only allows the enhancement of the coupling efficiency with respect to the coupling device in use but likewise offers great freedom in the arrangement of the used fibres. This letter gives a thorough explanation of the fabrication method as well as the optical simulations for the lenses on the fibre assembly.

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Pisanello, Marco, Di Zheng, Antonio Balena, Filippo Pisano, Massimo De Vittorio e Ferruccio Pisanello. "An open source three-mirror laser scanning holographic two-photon lithography system". PLOS ONE 17, n. 4 (15 aprile 2022): e0265678. http://dx.doi.org/10.1371/journal.pone.0265678.

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Two-photon polymerization is a widely adopted technique for direct fabrication of 3D and 2D structures with sub-diffraction-limit features. Here we present an open-hardware, open-software custom design for a holographic multibeam two-photon polymerization system based on a phase-only spatial light modulator and a three-mirror scanhead. The use of three reflective surfaces, two of which scanning the phase-modulated image along the same axis, allows to overcome the loss of virtual conjugation within the large galvanometric mirrors pair needed to accommodate the holographic projection. This extends the writing field of view among which the hologram can be employed for multi-beam two-photon polymerization by a factor of ~2 on one axis (i.e. from ~200μm to ~400μm), with a voxel size of ~250nm × ~1050nm (lateral × axial size), and writing speed of three simultaneous beams of 2000 voxels/s, making our system a powerful and reliable tool for advanced micro and nano-fabrications on large area.

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Filippidis, G., J. Catherine, M. Farsari, V. Zorba e C. Fotakis. "Construction of micron three-dimensional structures employing multi-photon polymerization". Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems 219, n. 4 (dicembre 2005): 165–68. http://dx.doi.org/10.1243/17403499jnn48.

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Zhao, Yuxia, Xue Li, Feipeng Wu e Xiangyun Fang. "Novel multi-branched two-photon polymerization initiators of ketocoumarin derivatives". Journal of Photochemistry and Photobiology A: Chemistry 177, n. 1 (gennaio 2006): 12–16. http://dx.doi.org/10.1016/j.jphotochem.2005.05.006.

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Cui, Hai-Bo, Yan Li, Zhao-Pei Liu, Hong Yang e Qi-Huang Gong. "Controlling aspect ratios of suspended nanorods fabricated by multi-photon polymerization". Applied Physics A 105, n. 4 (19 agosto 2011): 897–901. http://dx.doi.org/10.1007/s00339-011-6539-1.

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Lee, W., S. A. Pruzinsky e P. V. Braun. "Multi-Photon Polymerization of Waveguide Structures Within Three-Dimensional Photonic Crystals". Advanced Materials 14, n. 4 (19 febbraio 2002): 271–74. http://dx.doi.org/10.1002/1521-4095(20020219)14:4<271::aid-adma271>3.0.co;2-y.

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Parkatzidis, Kostas, Maria Chatzinikolaidou, Eleftherios Koufakis, Maria Kaliva, Maria Farsari e Maria Vamvakaki. "Multi-photon polymerization of bio-inspired, thymol-functionalized hybrid materials with biocompatible and antimicrobial activity". Polymer Chemistry 11, n. 25 (2020): 4078–83. http://dx.doi.org/10.1039/d0py00281j.

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Più fonti

Tesi sul tema "Multi-photon polymerization"

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Müller, Jonathan Benedikt [Verfasser], e M. [Akademischer Betreuer] Wegener. "Exploring the Mechanisms of Three-Dimensional Direct Laser Writing by Multi-Photon Polymerization / Jonathan Benedikt Müller. Betreuer: M. Wegener". Karlsruhe : KIT-Bibliothek, 2015. http://d-nb.info/1072464608/34.

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Ogor, Florie. "Microfabrication 3D par polymérisation multiphotonique massivement parallélisée pour des applications photoniques et biomédicales". Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0413.

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Les structures de taille submicroniques en 3D sont utiles dans de nombreux domaines (photonique,optique, biologie...). La fabrication de telles structures est difficile. La polymérisation multiphotonique est une technique adaptée, mais les temps de fabrication actuels sont longs (une journée pour fabriquer une structure d’un mm3), rendant la production industrielle couteuse et limitant le développement de ces structures. Nous présentons notre contribution au développement et à l’optimisation d’un procédé de fabrication rapide de ces structures par polymérisation multiphotonique massivement parallélisée. Deux techniques de parallélisation sont étudiées à IMT Atlantique : une avec un élément optique diffractif, et l’autre, plus étudiée dans cette thèse, avec un modulateur spatial de lumière en configuration imagerie et une résine ultrasensible TTA (annihilation triplet-triplet), permettant d’écrire avec 1920×1080 faisceaux en parallèle. L’utilisation de multiples faisceaux d’écriture peut entraîner des effets de proximité qui limitent la résolution. Nous présentons notre simulation numérique du processus photochimique pour comprendre, prédire et corriger ces effets. Ensuite, nous présentons des améliorations effectuées, identifiées grâce aux simulations et à une meilleure compréhension du système optique. La méthode de fabrication développée permet de fabriquer des structures avec une résolution d’environ un micromètre en X,Y et de plusieurs dizaines de micromètres de hauteur sur des surfaces de l’ordre du cm2 en quelques minutes. Enfin, des exemples d’applications en biologie et en ophtalmologie, adaptés à ces performances, sont présentés
Submicron 3D structures are required in many fields (photonics, optics, biology, etc.). Fabricating such structures is difficult. Multiphoton polymerization is a suitable technique, but current fabrication times are long (one day to fabricate a mm3 structure), making industrial production costly and limiting the development of these structures. We present our contribution to the development and optimization of a massively parallelised multiphoton polymerization fabrication process for these structures. Two parallelization techniques are investigated at IMT Atlantique: one using a diffractive optical element and another, studied in this thesis, using a spatial light modulator in an imaging configuration and an ultra-sensitive TTA resist (Triplet-Triplet Annihilation), enabling writing with 1920 × 1080 beams in parallel. The use of multiple write beams can lead to resolution limiting proximity effects. We present our numerical simulation model of the photochemical process to understand, predict and correct these effects. We present possible improvements based on these simulations and the improved understanding of the optical system. The fabrication method we have developed enables us to fabricate structures with a resolution of around one micrometer in X,Y and several tens of micrometers in height on surfaces of the order of cm2 in just a few minutes. Finally, examples of applications in biology and ophthalmology, adapted to the photoplotter performance are presented

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Liang, Wen Ping, e 梁文評. "Fabrication of two- and three-dimensional photonic crystals with defect by combining multiple-exposure of two-beam interference and multi-photon polymerization". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/39234243665121255414.

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碩士
國立中正大學
光機電整合工程研究所
93
We demonstrated theoretically and experimentally a simple and easy method using multi-exposure of two-beam interference technique for fabrication of large-area two- and three-dimensional photonic crystals. Multi-exposure of two-beam interference pattern of a He-Cd laser or an argon laser into a negative SU8 or a positive AZ photopolymerizable photoresist is used to pattern square, rectangular, and hexagonal two- and three-dimensional periodic structures. The type of periodic structures depends on the orientation of photoresist with respect to the laser beam and the number of exposure. The lattice constants of three-dimensional periodic structures obtained by this technique are close in three dimensions, which is difficult to be obtained by one-exposure of multi-beam interference. In particular, we proposed a new ideal to fabricate two- and three-dimensional photonic crystals with well-defined defects by using the combination of interference and multi-photon polymerization techniques. Desired defects are introduced in the photonic crystals (fabricated by multi-exposure of two-beam interference technique) by tightly focused 100 femto-second duration pulses at 830nm-wavelength through an objective lens (numerical aperture = 0.85) to generate multi-photon absorption effect. A 6mm ´ 6mm photonic crystal with the lattice constant as small as 650nm embedding several kinds of defects, such as bending waveguides, numbers or letters defects, is obtained by employing this combination technique. Our new fabrication technique using multi-exposure of two-beam interference and its combination with multi-photon polymerization should be useful for mass production of photonic crystals and optoelectronics devices.

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Atti di convegni sul tema "Multi-photon polymerization"

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Tkaczyk, Tomasz S., Jiawei Lu e Haimu Cao. "Imaging Snapshot Spectrometers enabled with 2-Photon Polymerization based Additive Manufacturing". In Imaging Systems and Applications, IM1G.7. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/isa.2024.im1g.7.

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The work presents examples of two imaging spectrometers enabled with 2-Photon Polymerization 3D printing. The presented spectrometers are field integral devices and image reorganization is achieved with high density waveguide array (waveguide spectrometer) or multifaceted, multi-angle mirror array respectively (Image Mapping Spectrometer - IMS). Fabricated components allow void spaces between image points dedicated for spectral information. High precision and repeatability of the fabricated components simplifies system calibration, improved image quality allows and more compact systems implementations.

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Shahriar, Shaimum, Javier J. Pazos, Robin Howell, Tyrone Morales, Desiree Aguilar, Stephen M. Kuebler e Jimmy Touma. "Morpho Butterfly-Inspired Sensors Created by Multi-Photon Polymerization". In 2022 IEEE Research and Applications of Photonics in Defense Conference (RAPID). IEEE, 2022. http://dx.doi.org/10.1109/rapid54472.2022.9911536.

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Gregory, Serge L. H. F., e Elijah Kannatey-Asibu. "Analysis of Voxel Size During Two-Photon Polymerization". In ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/msec2012-7374.

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Two-photon polymerization combines the concepts of multi-photon absorption with polymerization of a free radical polymerizable monomer. It can be used to fabricate a variety of micro-devices including micro-fluidic, biomedical, micro-optical, and micro-mechanical devices. A critical aspect of two-photon polymerization is the resolution of the process. This paper derives an expression for the voxel (volume element) size produced during two-photon polymerization. The model assumes a Gaussian beam and the effects of beam power, lens parameters, and resin polymerization threshold are investigated. A sensitivity analysis is also performed, and the results show that the voxel formed is more sensitive to changes in beam power and resin threshold than to changes in the incident beam diameter.

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Obata, Kotaro, Jürgen Koch e Boris N. Chichkov. "Individually controlled multi-focus laser processing for two-photon polymerization". In SPIE LASE, a cura di Hiroyuki Niino, Michel Meunier, Bo Gu e Guido Hennig. SPIE, 2010. http://dx.doi.org/10.1117/12.842117.

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Somers, Paul, Xiaolong He e Xianfan Xu. "Numerical modeling of multi-photon polymerization by ultrafast laser (Conference Presentation)". In Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIII, a cura di Beat Neuenschwander, Gediminas Račiukaitis, Tetsuya Makimura e Costas P. Grigoropoulos. SPIE, 2018. http://dx.doi.org/10.1117/12.2290612.

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Obata, Kotaro, Sven Passinger, Andreas Ostendorf e Boris Chichkov. "Multi-focus system for two-photon polymerization using phase modulated holographic technique". In ICALEO® 2007: 26th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2007. http://dx.doi.org/10.2351/1.5061168.

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Zhang, Qianyi, Antoine Boniface, Virendra Kumar Parashar e Christophe Moser. "Multi-Photon Polymerization with Upconversion Nanoparticles for Adaptive Feature-Size 3D Printing". In 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2023. http://dx.doi.org/10.1109/cleo/europe-eqec57999.2023.10232766.

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Tsunemitsu, Kaneto, Ryo Sano, Akira Watanabe, Hiroaki Onoe e Mitsuhiro Terakawa. "Microfabrication of double-network hydrogel with enhanced mechanical properties by multi-photon polymerization". In Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI, a cura di Carlos Molpeceres, Aiko Narazaki e Jie Qiao. SPIE, 2021. http://dx.doi.org/10.1117/12.2576707.

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Kurth, Daniel, e Alexander Verl. "Kinematic multi-axis two-photon polymerization printer concept for the manufacturing of micro optics". In 3D Printing for Lighting, a cura di Nadarajah Narendran, Samuel T. Mills e Govi Rao. SPIE, 2023. http://dx.doi.org/10.1117/12.2675889.

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Obata, Kotaro, Francesc Caballero Lucas e Koji Sugioka. "Multi-photon polymerization by GHz burst mode femtosecond laser pulses for improvement of process resolution". In Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVII, a cura di Laura Gemini, Aiko Narazaki e Jie Qiao. SPIE, 2022. http://dx.doi.org/10.1117/12.2610529.

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