Optical Materials: X最新文献

{"title":"Advances in Ce3+ doped Y1±xAlO3 (x≠0) single crystal perovskite scintillators through nonstoichiometric engineering","authors":"Karol Bartosiewicz ,&nbsp;Jan Pejchal ,&nbsp;Romana Kucerkova ,&nbsp;Alena Beitlerova ,&nbsp;Vladimir Babin ,&nbsp;Vojtech Vanecek ,&nbsp;Shunsuke Kurosawa ,&nbsp;Kei Kamada ,&nbsp;Akira Yoshikawa","doi":"10.1016/j.omx.2024.100295","DOIUrl":"10.1016/j.omx.2024.100295","url":null,"abstract":"<div><p>The influence of nonstoichiometric engineering on the scintillation properties of Ce³⁺ doped yttrium aluminum perovskite (YAP:Ce) crystals was investigated. Crystals with slight yttrium excess (Y₁_·₀₀₄AlO₃:Ce), yttrium deficiency (Y₀_·₉₉₄AlO₃:Ce), and stoichiometric composition (YAlO₃:Ce) were synthesized using the micro-pulling down method. Structural characterization confirmed crystallization in the pure orthorhombic <em>Pnma</em> space group for all compositions. Optical absorption spectroscopy revealed an extensive background in the nonstoichiometric crystals due to the increased degree of light scattering centers associated with the defects. The photoluminescence excitation and emission spectra of Ce³⁺ ions were unaffected by nonstoichiometry. However, the scintillation decay kinetics and light yield exhibited marked improvements in the Y_1±xAlO₃:Ce (x≠0) crystals. The light yield increased by 22 % and 15 % and the slower component of the decay accelerated from 171 ns to 106 and 131 ns compared to the stoichiometric crystal. Thermoluminescence glow curves revealed that nonstoichiometry significantly altered the concentrations of antisite defects and oxygen vacancies. The EPR spectroscopy investigations revealed a correlation between the Ce³⁺ ions concentration and the degree of nonstoichiometry. Strategic engineering of nonstoichiometry in Y_1±xAlO₃:Ce (x≠0) scintillators may have provided an effective approach to optimizing scintillation performance.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259014782400007X/pdfft?md5=416dd0325b89956c69bcb97f1f480015&pid=1-s2.0-S259014782400007X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139637829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nd3+→ Cr4+ energy transfer in co-doped Nd,Cr:Y3Al5O12 garnet transparent ceramics","authors":"Ian R. Phillips,&nbsp;Ross A. Osborne,&nbsp;Nerine J. Cherepy,&nbsp;Alexander D. Drobshoff,&nbsp;Zachary M. Seeley,&nbsp;William F. Krupke,&nbsp;Stephen A. Payne","doi":"10.1016/j.omx.2024.100292","DOIUrl":"10.1016/j.omx.2024.100292","url":null,"abstract":"<div><p>Herein, we quantitatively analyze the Nd³⁺ → Cr⁴⁺ energy transfer efficiency in the co-doped transparent ceramic YAG host and determine that it can be maintained at less than a 20 % loss of Nd³⁺ excited states when the Cr⁴⁺ absorption coefficient at 1064 nm is less than 1.0 cm⁻¹. Furthermore, we conclude that the energy transfer mechanism can be fully accounted for on the basis of classic Förster-Dexter theory, as the transfer efficiency deduced from the emission kinetics is consistent with that independently determined from the spectroscopic properties of Cr⁴⁺ absorption and Nd³⁺ emission. Systematic studies of trends for Cr³⁺ → Cr⁴⁺ conversion are reported as a function of the oxygen annealing temperature, initial Cr³⁺ concentration, and incorporation of divalent (Mg²⁺ and Ca²⁺) charge compensators. Lastly, no effect of energy migration among the Nd³⁺ ions was observed.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000044/pdfft?md5=ffcbc59e9137c3705823cde19250fcd7&pid=1-s2.0-S2590147824000044-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139395965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the content of stacked ZnO on the structural and optical properties of heterostructured ZnO/Ga2O3 films","authors":"Peverga R. Jubu ,&nbsp;E. Danladi ,&nbsp;M.B. Ochang ,&nbsp;O. Adedokun ,&nbsp;C.C. Amadi ,&nbsp;D.D. Hile ,&nbsp;W.V. Zhiya ,&nbsp;A.A. Iorokpen ,&nbsp;Y. Yusof ,&nbsp;F.K. Yam","doi":"10.1016/j.omx.2024.100291","DOIUrl":"10.1016/j.omx.2024.100291","url":null,"abstract":"<div><p>The rising demand for heterojunction materials stimulated by the great achievements of modern nanotechnology has triggered enormous interests in the investigation of their materials properties. Heterostructured ZnO/Ga₂O₃ has been deployed for different device applications, but its several optical parameters have rarely been investigated. The present work attempts to investigate the influence of the thickness of stacked ZnO layer on the surface of Ga₂O₃ film. Optical parameters, such as absorption and extinction coefficient, Urbach energy, refractive index, dielectric constants, optical dispersion energy, single oscillator energy, static refractive index, oscillator strength, and oscillator wavelength of the ZnO/Ga₂O₃ films were studied. Morphological characterization showed microstructures of various shapes. Cross-section measurements showed that the thickness of the Ga₂O₃ layer remained approximately the same for all samples, while the thickness of the ZnO layer increased from 0 to 5.14 nm. Structural analysis revealed the coexistence of β-Ga₂O₃ and wurtzite ZnO crystal phases. UV–Vis absorption spectra demonstrated two distinct absorptions belonging to the β-Ga₂O₃ and ZnO. The bandgap of the composite ranged between 4.43 and 4.69 eV with an increase in the amount of ZnO at the surface. The absorption and extinction coefficient were in the order of 10³ cm⁻¹ and 10⁻⁵, respectively. The Urbach energy ranged between 0.688 and 1.125 eV. The refractive index was in the range 2.09–2.85, while the static refractive index ranged between 1.90 and 2.73. Also reported were other optical parameters, such as the real and imaginary dielectric constant, dispersive energy, single oscillator energy, oscillator strength, and oscillator wavelength.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000032/pdfft?md5=bac7b1e246517f91113e024c503ab73e&pid=1-s2.0-S2590147824000032-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139393715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gum Arabic-stabilized upconverting nanoparticles for printing applications","authors":"Christian Homann ,&nbsp;Emille M. Rodrigues ,&nbsp;Patrick Orsini ,&nbsp;Keven Savard ,&nbsp;Christophe-Badié Togola ,&nbsp;Marie-Maude de Denus-Baillargeon ,&nbsp;Maroun Massabki ,&nbsp;Eva Hemmer","doi":"10.1016/j.omx.2024.100290","DOIUrl":"10.1016/j.omx.2024.100290","url":null,"abstract":"<div><p>Upconverting nanoparticles (UCNPs) have been proposed for a variety of applications ranging from biomedical probes to luminescent sensors and security tags. Yet, bringing UCNPs into real-life, technologically relevant products requires implementation into industry-friendly processes. The need for stable dispersions, clean films or dry powders challenges users who look for a way to use UCNPs. In this work, an ink formulation was developed that offers a straightforward way to print UCNPs on glass and metallic substrates. The use of Gum Arabic as biocompatible emulsifier allowed to implement the NaGdF₄:Er,Yb/NaGdF₄ core/shell UCNPs into water-based ink formulations without the need of complex surface chemistry. The formulation, based on water, glycerin, and propanediol, exhibited good stability and applicability for printing with a commercial aerosol jet printer. Bright upconversion emission was retained upon printing, and the obtained UCNP films were used in proof-of-concept luminescent thermal sensing.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000020/pdfft?md5=b3203e28d3a1311d158d3795a9f7c745&pid=1-s2.0-S2590147824000020-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139394063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blue and green upconverted emission in fluoroindate glasses under 808 nm excitation","authors":"G. Lesly Jimenez ,&nbsp;Lijun Wang ,&nbsp;C. Vazquez-Lopez ,&nbsp;A.N. Meza-Rocha ,&nbsp;Marcin Kochanowicz ,&nbsp;B. Starzyk ,&nbsp;Ciro Falcony ,&nbsp;Dominik Dorosz","doi":"10.1016/j.omx.2024.100289","DOIUrl":"https://doi.org/10.1016/j.omx.2024.100289","url":null,"abstract":"<div><p>In this study, the upconversion (UC) luminescence of fluoroindate glasses (InF₃G) co-doped with Yb-Nd-Er (Tm) ions excited in the NIR-I biological window was analyzed. In the first system, UC emission of singly Er³⁺ doped InF₃G under 808 nm excitation occurred to be more efficient than those observed in InF₃G co-doped with Yb–Er and Yb-Nd-Er. The intensity of UC emission (InF₃G-Er) was 22 % higher than InF₃G-Yb-Er, and even more than two times higher than in the InF₃G-Yb-Nd-Er sample. The effective energy transfer (η) between Nd³⁺- Yb³⁺ (η = 45 %) and Yb³⁺-Er³⁺ (η = 68 %), was reflected in the emission observed in the NIR region mainly, ascribed to Yb³⁺:²F_5/2 → ²F_7/2 (978 and 999 nm) and Nd³⁺:⁴F_3/2 → ⁴I_9/2 (1053 nm) transitions. Meanwhile, the samples co-doped with Tm³⁺ exhibited a strong dependence on Yb-Nd-Tm co-doping. Samples without Yb and Nd did not exhibit any UC emission due to the absence of pumping channel. This contrasts with the downshifting NIR emission, which was at least two times higher than those exhibited in samples co-doped Yb-Nd-Er. These results suggest that Tm³⁺ plays a crucial role in populating the lower-lying exited levels of Yb and Nd, influencing the overall emission behavior.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000019/pdfft?md5=82c3f54a0d7074916a7246c876db2cee&pid=1-s2.0-S2590147824000019-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139108169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced thermoluminescence, radioluminescence, and optically stimulated luminescence from lithium fluoride and silver nanoparticles composites","authors":"Fraylenin Pinto Capia,&nbsp;Eder Jose Guidelli","doi":"10.1016/j.omx.2023.100287","DOIUrl":"10.1016/j.omx.2023.100287","url":null,"abstract":"<div><p>Plasmonic properties of metals can increase the sensitivity of ionizing radiation dosimeters. In this work, we study the plasmon resonance of silver nanoparticles (AgNp) to increase the optically stimulated luminescence (OSL) intensity of lithium fluoride (LiF) polycrystals. We produced LiF/Ag nanocomposites with different volumes of a silver nanoparticle dispersion and investigated their OSL response. We also investigated their thermoluminescence (TL) and radioluminescence/scintillation (RL) responses. X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV–vis spectroscopy characterized the synthesized materials. XRD results clearly show the characteristic peaks of LiF and AgNps. TEM images revealed silver nanoparticles with diameters between 80 and 120 nm and LiF crystals with sizes between 1 and 5 μm. Reflectance spectroscopy showed a band around 420 nm, attributed to the plasmon resonance of silver nanoparticles. The responses of the OSL curves to X-ray irradiation were analyzed, showing higher OSL sensitivity with 14 mL AgNp, attributed to the AgNp plasmon resonance. A significant increase in TL and RL intensity could be observed for the LiF/Ag nanocomposites. TL, RL, and OSL results support that addition of AgNps do not lead to the creation of more and new traps or luminescent centers. The increase of TL and RL intensities is therefore related to the coupling of the luminescent centers with the AgNPs plasmons, in an energy-transfer mechanism (plasmon-coupled emission), whereas the enhanced OSL intensity directly correlates with the increased photoionization cross-section of the electronic traps under plasmon resonance conditions (plasmon-coupled excitation). Therefore, these results indicate that AgNp are potential candidates to increase the OSL, TL, and RL intensity from LiF dosimeters.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259014782300061X/pdfft?md5=ea1363c64e20787e74b257ea9a684e2d&pid=1-s2.0-S259014782300061X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138985880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AgNPs incorporated in Eu(III)-doped hydroxyapatite biomaterial: Spectroscopic, cytotoxicity, and antimicrobial investigation","authors":"Lauany Mazzon Pontes,&nbsp;João Vitor Gonçalves de Faria,&nbsp;Marcela Guedes Matos Grespi,&nbsp;Lucas Alonso Rocha,&nbsp;Eduardo José Nassar","doi":"10.1016/j.omx.2023.100286","DOIUrl":"10.1016/j.omx.2023.100286","url":null,"abstract":"<div><p>This study aimed to synthesize and to characterize hydroxyapatite with antimicrobial action. For the synthesis, the precursors calcium nitrate and phosphoric acid were employed; europium(III), 1 % w/w in relation to calcium(II), was used as spectroscopic probe, to investigate structural alterations. Silver nanoparticles, as antimicrobial agents, were added to the resulting material. Formation of the hydroxyapatite phase was confirmed by X-ray diffraction and vibrational spectroscopy in the infrared region. Incorporation of silver nanoparticles in the material was confirmed by electronic absorption spectroscopy in the ultraviolet–visible region, through the absorption band at approximately 400 nm. Scanning electron microscopy revealed that the material had adequate morphology to induce bone formation. The excitation, emission, and lifetime measurements of the structural probe, europium(III), showed that the hydroxyapatite unit cell had two symmetry sites. Cytotoxicity evaluation in human cells showed that the material was toxic at concentrations above 1250 μg/mL. At 2000 ppm, the material displayed antimicrobial activity against <em>E. coli</em>, but the maximum evaluated concentration was insufficient to verify activity against <em>S. aureus</em>. Therefore, hydroxyapatite bearing silver nanoparticles is a promising material for application in the medical area.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147823000608/pdfft?md5=70cc4649d69af3dd4d6ceb894e73fc24&pid=1-s2.0-S2590147823000608-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138993806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photoluminescence and X-ray induced scintillation in Gd3+-Tb3+ co-doped fluoride-phosphate glasses, and derived glass-ceramics containing NaGdF4 nanocrystals","authors":"Gustavo Galleani ,&nbsp;Thiago A. Lodi ,&nbsp;Robin L. Conner ,&nbsp;Luiz G. Jacobsohn ,&nbsp;Andrea S.S. de Camargo","doi":"10.1016/j.omx.2023.100288","DOIUrl":"https://doi.org/10.1016/j.omx.2023.100288","url":null,"abstract":"<div><p>The glass system (50NaPO₃–20BaF₂–10CaF₂–20GdF₃)-xTbCl₃ with x = 0.3, 1, 3, 5, and 10 wt % was investigated. We successfully produced transparent glass ceramic (GC) scintillators with x = 1 through a melt-quenching process followed by thermal treatment. The luminescence and crystallization characteristics of these materials were thoroughly examined using various analytical methods. The nanocrystallization of Tb³⁺-doped Na₅Gd₉F₃₂ within the doped fluoride-phosphate glasses resulted in enhanced photoluminescence (PL) and radioluminescence (RL) of the Tb³⁺ ions. The GC exhibited an internal PL quantum yield of 33 % and the integrated RL intensity across the UV-visible range was 36 % of that reported for the commercial BGO powder scintillator. This research showcases that Tb-doped fluoride-phosphate GCs containing nanocrystalline Na₅Gd₉F₃₂ have the potential to serve as efficient scintillators while having lower melting temperature compared to traditional silicate and germanate glasses.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147823000621/pdfft?md5=1f88c030d73d83352e028bbe6efd25e9&pid=1-s2.0-S2590147823000621-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138839069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solar spectral management in space using lanthanide-based downshifting layers","authors":"Sandra F.H. Correia ,&nbsp;Lianshe Fu ,&nbsp;Paulo S. André ,&nbsp;Rute A.S. Ferreira","doi":"10.1016/j.omx.2023.100280","DOIUrl":"https://doi.org/10.1016/j.omx.2023.100280","url":null,"abstract":"<div><p>Photovoltaic (PV) cells are still the most used energy generation devices for aerospace applications. Although multijunction solar cells represent the standard commercial technology for powering spacecraft, spacecraft companies are still using Si-based PV cells to decrease the cost of satellites at the expense of efficiency and energy generation losses. One of the limitations on solar energy conversion is the mismatch between the solar spectrum and the absorption of the PV technology in use. Thus, strategies to overcome this have been proposed, namely the use of luminescent downshifting layers (DSLs) which are very promising to shape the incident sunlight. In this sense, downshifting materials with absorption in the UV/blue spectral region have been privileged considering the solar spectrum in space environments (AM0 solar spectrum), in which the UV component is larger than that on Earth surface (AM1.5 solar spectrum). Here, we propose the use of Eu³⁺-doped di-ureasil organic-inorganic hybrid materials as DSLs to be used on large area Si-based PV cells (∼0.1 m²) for space applications. Electrical measurements on the PV cell, done before and after the deposition of the DSLs, confirm the positive effect of the coatings on the device performance, with a relative increase on the generated electrical power of ∼2.6 %. Here, we report, for the first time, a DSL specifically designed for space applications and with the largest active area reported so far.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147823000542/pdfft?md5=274450eadd04003cee93049244f39b8b&pid=1-s2.0-S2590147823000542-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138548813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Active biosoluble composite material obtained by real-time LbL photoreduction of silver via light-based 3D printing","authors":"Alisson S. de Albuquerque ,&nbsp;Elaine C.R. Vaz ,&nbsp;Janaína V. dos Anjos ,&nbsp;Petrus A. Santa-Cruz","doi":"10.1016/j.omx.2023.100283","DOIUrl":"https://doi.org/10.1016/j.omx.2023.100283","url":null,"abstract":"<div><p>In this study, a silver-containing photopolymerizable resin was developed and synthesized to create an active biosoluble composite for various applications, including biomedical devices. The main goal was to investigate the properties of this material, which can be produced through real-time LbL (Layer-by-Layer) <em>in situ</em> silver photoreduction during resin photopolymerization. This process uses the 405 nm LEDs of an MSLA (Masked Stereolithography Apparatus) 3D printer. Characterization techniques reveal chemical changes caused by the photoreduction of silver as well as an improvement in physical properties attributed to the presence of metallic silver. The silver nanocomposite has the potential for applications such as 3D-printed antimicrobial structures for biomedicine and engineering. To demonstrate the application of the developed material, a PoC (Proof of Concept) of 3D printing of bioinspired microneedles is presented, aiming to contribute to methods of drug administration that bypass the stratum corneum without causing pain.</p></div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147823000578/pdfft?md5=f38f70ef36f1331964079c56a582ebb9&pid=1-s2.0-S2590147823000578-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138577533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}