Hybrid Au@Si microspheres produced via laser irradiation in liquid for nonlinear photonics

Gurbatov, Stanislav; Puzikov, Vladislav; Cherepakhin, Artem; Mitsai, Eugeny; Tarasenka, Natalie; Shevlyagin, A. V.; Сергеев, А. А.; Kulinich, Sergei A.; Kuchmizhak, Aleksandr

doi:10.1016/j.optlastec.2021.107666

Cited by 7 publications

(8 citation statements)

References 43 publications

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“…The laser printing of Au/Si core–shell NPs was demonstrated in [ 20 ], while the assembly of Si/Au core/shell NPs was developed on the basis of double-beam nanosecond laser ablation in liquid [ 21 ]. The same geometry was realized by laser irradiation of a mixed Si-Au colloidal solution obtained by CW laser ablation [ 22 ] of corresponding targets in ethanol solution or isopropanol solution containing commercial Si micro-powder and AuCl

ions [ 23 ]. Si@Au NPs formation was reported in [ 24 ], where bare Si and Au NPs were produced by Yb:KGW femtosecond laser ablation in water–ethanol solutions followed by adding 3-aminopropyltrimethoxysilane to Si NPs solution and stirring with aqueous solution of Au NPs.…”

Section: Introductionmentioning

confidence: 99%

Femtosecond Laser-Assisted Formation of Hybrid Nanoparticles from Bi-Layer Gold–Silicon Films for Microscale White-Light Source

et al. 2022

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It is very natural to use silicon as a primary material for microelectronics. However, silicon application in nanophotonics is limited due to the indirect gap of its energy band structure. To improve the silicon emission properties, it can be combined with a plasmonic part. The resulting metal–dielectric (hybrid) nanostructures have shown their excellence compared to simple metallic dielectric nanostructures. Still, in many cases, the fabrication of such structures is time consuming and quite difficult. Here, for the first time, we demonstrate a single-step and lithography-free laser-induced dewetting of bi-layer nanoscale-thickness gold–silicon films supported by a glass substrate to produce hybrid nanoparticles. For obtaining hybrid nanoparticles, we study nonlinear photoluminescence by mapping their optical response and morphology by scanning electron microscopy. This method can be used for the fabrication of arrays of hybrid nanoparticles providing white-light photoluminescence with a good control of their microscopic sizes and position. The developed approach can be useful for a wide range of photonic applications including the all-optical data processing and storage where miniaturization down to micro- and nanoscale together with an efficiency increase is of high demand.

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Section: Introductionmentioning

confidence: 99%

Femtosecond Laser-Assisted Formation of Hybrid Nanoparticles from Bi-Layer Gold–Silicon Films for Microscale White-Light Source

et al. 2022

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“…Mixing nanocrystalline Si with plasmon-active materials is known to provide promising strategy to boost non-linear optical response of such hybrid nanomaterials 43,[51][52][53] . In particular, injection of photogenerated hot electrons from bulk Au inclusions and from surface Au nanoparticles into Si nanocrystals upon excitation with femtosecond IR laser pulses was previously shown to provide conditions for observation of nonlinear broadband visible-light PL from the LAL-generated Au-Si nanomaterial 24 . In the present work, we carried out systematic studies revealing that the highest nonlinear PL yield does not correlate with the amount of Au species added to the laser-treated dispersion (see Methods).…”

Section: B Optical Sensing and Anti-counterfeiting Withmentioning

confidence: 99%

“…This provides a pathway for the preparation of nanomaterials with a wide range of morphology, structure and composition (including meta-stable and non-equilibrium phases). Laser irradiation of LAL-generated dispersions can further expand the method functionality, allowing for highperformance preparation of diverse hybrid nanomaterials for photovoltaics 17,18 , photothermal conversion 19,20 , catalysis [21][22][23] , nonlinear optics 24 , sensing [25][26][27][28] and medi-cal applications 29,30 . Gold, the most chemically stable plasmon-active metal, and silicon, an earth-abundant semiconductor widely applied for all-dielectric metasurface design, present an intriguing combination, in which the advantages of plasmonic and nanophotonic concepts can be merged within unified nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Au-Si microspheres produced by laser ablation in liquid (LAL) for temperature-feedback optical nano-sensing and anti-counterfeit labeling

Gurbatov¹,

Puzikov²,

Storozhenko³

et al. 2022

Preprint

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“…This provides a pathway for the preparation of nanomaterials with a wide range of morphologies, structures and compositions (including metastable and nonequilibrium phases) . Laser irradiation of LAL-generated dispersions can further expand the method functionality, allowing for the high-performance preparation of diverse hybrid nanomaterials for photovoltaics, , photothermal conversion, ,− catalysis, − nonlinear optics, sensing, − and medical applications. , …”

Section: Introductionmentioning

confidence: 99%

Multigram-Scale Production of Hybrid Au-Si Nanomaterial by Laser Ablation in Liquid (LAL) for Temperature-Feedback Optical Nanosensing, Light-to-Heat Conversion, and Anticounterfeit Labeling

Gurbatov

Puzikov

Storozhenko

et al. 2023

ACS Appl. Mater. Interfaces

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Recent progress in hybrid optical nanomaterials composed of dissimilar constituents permitted an improvement in the performance and functionality of novel devices developed for optoelectronics, catalysis, medical diagnostics, and sensing. However, the rational combination of contrasting materials such as noble metals and semiconductors within individual hybrid nanostructures via a ready-to-use and lithography-free fabrication approach is still a challenge. Here, we report on a two-step synthesis of hybrid Au-Si microspheres generated by laser ablation of silicon in isopropanol followed by laser irradiation of the produced Si nanoparticles in the presence of HAuCl 4 . Thermal reduction of [AuCl 4 ] − species to a metallic gold phase, along with its subsequent mixing with silicon under laser irradiation, creates a nanostructured material with a unique composition and morphology, as revealed by electron microscopy, tomography, and elemental analysis. A combination of basic plasmonic and nanophotonic materials such as gold and silicon within a single microsphere allows for efficient light-to-heat conversion, as well as single-particle SERS sensing with temperature-feedback modality and expanded functionality. Moreover, the characteristic Raman signal and hot-electron-induced nonlinear photoluminescence coexisting within the novel Au-Si hybrids, as well as the commonly criticized randomness of the nanomaterials prepared by laser ablation in liquid, were proved to be useful for the realization of anticounterfeiting labels based on a physically unclonable function approach.

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Hybrid Au@Si microspheres produced via laser irradiation in liquid for nonlinear photonics

Cited by 7 publications

References 43 publications

Femtosecond Laser-Assisted Formation of Hybrid Nanoparticles from Bi-Layer Gold–Silicon Films for Microscale White-Light Source

Femtosecond Laser-Assisted Formation of Hybrid Nanoparticles from Bi-Layer Gold–Silicon Films for Microscale White-Light Source

Hybrid Au-Si microspheres produced by laser ablation in liquid (LAL) for temperature-feedback optical nano-sensing and anti-counterfeit labeling

Multigram-Scale Production of Hybrid Au-Si Nanomaterial by Laser Ablation in Liquid (LAL) for Temperature-Feedback Optical Nanosensing, Light-to-Heat Conversion, and Anticounterfeit Labeling

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