Tunable optical properties of transition metal dichalcogenide nanoparticles synthesized by femtosecond laser ablation and fragmentation

Chernikov, A. S.; Tselikov, Gleb; Gubin, M. Yu.; Shesterikov, A. V.; Khorkov, K. S.; Syuy, Alexander V.; Ermolaev, Georgy A.; Kazantsev, I. S.; Романов, Р. И.; Markeev, Andrey M.; Popov, Anton A.; Tikhonowski, Gleb V.; Kapitanova, Olesya O.; Кочуев, Д. А.; Leksin, A. Yu.; Tselikov, Daniil I.; Arsenin, Aleksey V.; Kabashin, Andrei V.; Volkov, Valentyn S.; Prokhorov, A. V.

doi:10.1039/d2tc05235k

Cited by 7 publications

(5 citation statements)

References 74 publications

(112 reference statements)

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“…Indeed, the comparison of Bi2Se3 with traditional materials such as Au [78], Si [79], and MoS2 [21] in the therapeutic window NIR-I reveals a more than tenfold enhancement in heating efficiency (Figure 3f). Given the recent success of the fabrication of nanospheres from vdW materials [21,75], we also considered Bi 2 Se 3 nanospheres for efficient heating in the therapeutic window, known as NIR-I (700-980 nm) [21]. To demonstrate the efficiency invariance of Bi 2 Se 3 for the optical response of nanoparticles, we employed the Mie theory [76] to calculate the multipole decomposition of the extinction spectrum (Figure 3c), scattering (Figure 3d), and absorption (Figure 3e) cross-sections for a nanosphere with a standard diameter of d = 100 nm in a water environment using the dielectric function of CVD and MBE-grown Bi 2 Se 3 .…”

Section: Applications Of Bi 2 Sementioning

confidence: 99%

Broadband Optical Properties of Bi2Se3

et al. 2023

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Materials with high optical constants are of paramount importance for efficient light manipulation in nanophotonics applications. Recent advances in materials science have revealed that van der Waals (vdW) materials have large optical responses owing to strong in-plane covalent bonding and weak out-of-plane vdW interactions. However, the optical constants of vdW materials depend on numerous factors, e.g., synthesis and transfer method. Here, we demonstrate that in a broad spectral range (290–3300 nm) the refractive index n and the extinction coefficient k of Bi2Se3 are almost independent of synthesis technology, with only a ~10% difference in n and k between synthesis approaches, unlike other vdW materials, such as MoS2, which has a ~60% difference between synthesis approaches. As a practical demonstration, we showed, using the examples of biosensors and therapeutic nanoparticles, that this slight difference in optical constants results in reproducible efficiency in Bi2Se3-based photonic devices.

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Section: Applications Of Bi 2 Sementioning

confidence: 99%

Broadband Optical Properties of Bi2Se3

et al. 2023

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“…We proceed with the design and fabrication of 3R-MoS 2 subwavelength optical resonators. Due to challenges in fabricating spherical nanoresonators capable of hosting optical Mie modes [47,48], TMD nanodisks are preferred for their highest possible symmetry [35,49]. Specifically, TMD nanodisks are insensitive to incident linear polarization and can support optical modes across visible and near-infrared ranges.…”

Section: Mainmentioning

confidence: 99%

Combining ultrahigh index with exceptional nonlinearity in resonant transition metal dichalcogenide nanodisks

Shegai,

Zograf,

Polyakov

et al. 2023

Preprint

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Second-order nonlinearity in solids gives rise to a plethora of unique physical phenomena ranging from piezoelectricity and optical rectification to optical parametric amplification, spontaneous parametric down-conversion, and the generation of entangled photon pairs. Monolayer transition metal dichalcogenides (TMDs), such as MoS2, exhibit one of the highest known second-order nonlinear coefficients. However, the monolayer nature of these materials prevents the fabrication of resonant objects exclusively from the material itself, necessitating the use of external structures to achieve optical enhancement of nonlinear processes. Here, we exploit the 3R phase of a molybdenum disulfide multilayer for resonant nonlinear nanophotonics. The lack of inversion symmetry, even in the bulk of the material, provides a combination of a massive second-order susceptibility, an extremely high and anisotropic refractive index in the near-infrared region (n > 4.5), and low absorption losses, making 3R-MoS2 highly attractive for nonlinear nanophotonics. We demonstrate this by fabricating 3R-MoS2 nanodisks of various radii, which support resonant anapole states, and observing substantial (> 100-fold) enhancement of second-harmonic generation in a single resonant nanodisk compared to an unpatterned flake of the same thickness. The enhancement is maximized at the spectral overlap between the anapole state of the disk and the material resonance of the second-order susceptibility. Our approach unveils a powerful tool for enhancing the entire spectrum of optical second-order nonlinear processes in nanostructured van der Waals materials, thereby paving the way for nonlinear and quantum high-index TMD-nanophotonics.

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“…Existing literature reports on the generation of nanoparticles from different classes of materials (i.e. metals, semiconductors, and insulators) using ultrafast lasers in a liquid medium [39][40][41][42][43][44]. Metal nanoparticles generated from the bulk targets of plasmonic materials have shown wide ranging applications.…”

Section: Introductionmentioning

confidence: 99%

New aspects of femtosecond laser ablation of Si in water: a material perspective

Kumar,

Banerjee,

Akkanaboina

et al. 2024

J. Phys.: Condens. Matter

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We report a study of the role of material’s conductivity in determining the morphology of nanoparticles and nanostructures produced by ultrafast laser ablation of solids. Nanoparticles and textured surfaces formed by laser ablation display a wide variation in size and morphology depending on the material. In general, these qualities can be grouped as to material type, insulator, semiconductor, or metal; although each has many other different material properties that make it difficult to identify the critical material factor. In this report, we study these nanoparticle/ surface structural characteristics as a function of silicon (Si) resistivity, thus honing-in on this critical parameter and its effects. The results show variations in morphology, optical and non-linear properties of Si nanoparticles. The yield of colloidal Si nanoparticles increased with an increase in the conductivity of Si. Laser-induced periodic surface structures (LIPSS) formed on ablated substrates are also found to be sensitive to the initial conductivity of the material. Further, the laser ablation of Gamma-irradiated Si has been investigated to verify the influence of altered conductivity on the formation of Si nanoparticles. These observations are interpreted using the basic mechanisms of the laser ablation process in a liquid and its intricate relation with the initial density of states and thermal conductivities of the target material.

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Tunable optical properties of transition metal dichalcogenide nanoparticles synthesized by femtosecond laser ablation and fragmentation

Abstract: Manipulation of resonant dielectric nanostructures is of paramount importance for next-generation photonic devices. Traditionally, researchers use two-dimensional or phase-change materials for this purpose. However, the former leads to small efficiency,...

Cited by 7 publications

References 74 publications

Broadband Optical Properties of Bi2Se3

Broadband Optical Properties of Bi2Se3

Combining ultrahigh index with exceptional nonlinearity in resonant transition metal dichalcogenide nanodisks

New aspects of femtosecond laser ablation of Si in water: a material perspective

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