Photonic hook formation in near-infrared with MXene Ti<sub>3</sub>C<sub>2</sub> nanoparticles

Spector, Marat; Ang, Angeleene S.; Minin, Igor V.; Karabchevsky, Alina

doi:10.1039/d0na00485e

Cited by 30 publications

(18 citation statements)

References 58 publications

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“…The vast majority of studies on MXene optical properties have only addressed Ti 3 C 2 , for which density functional theory suggests that optically active interband transitions could be associated with the ≈800 nm extinction peak. [38][39][40] On the other hand, a study employing scanning transmission electron microscopy with electron energy loss spectroscopy (STEM-EELS) found a loss peak for Ti 3 C 2 nanoflakes at 1.7 eV (730 nm) that is independent of the flake size, has uniform intensity across the lateral dimensions of the flake, and shifts to higher energy in proportion to increased carrier concentration; on this basis, the authors convincingly assigned the loss peak to plasmon resonance. [17] The nearly perfect correspondence between the energy of the EELS peak in individual nanoflakes and the p-polarized reflectance peak in Ti 3 C 2 films at 720 nm (Figure 4e) is highly suggestive of a common mechanism, that is, that both transitions may be plasmonic in origin.…”

Section: Solid State Mxene Optical Transmission and Reflectancementioning

confidence: 99%

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

Maleski

Shuck

Fafarman

et al. 2020

Advanced Optical Materials

157

158

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Transition metal carbides and nitrides (MXenes) are a relatively new class of 2D materials, which include metallic and semiconducting examples. The chemical compositions of the vast MXene family span a broad range of the periodic table, yet the optical spectra of only a handful of MXene compositions have been reported, and in only one example are the spectroscopic features assigned. The optical properties of nine carbide MXenes, representing a systematic variation of chemical composition and atomic structure are presented here. The observed optical phenomena span the UV to IR and include interband transitions and plasma excitations. The spectral features involving excitation of the plasma provide an optical readout of the composition‐dependent carrier concentration, revealing even subtle changes due to modification of the surface chemistry. The high carrier concentration found in many MXenes differentiates them from other known 2D materials and the authors present evidence in favor of the hypothesis that MXenes host optically active plasmon resonances that naturally span the UV to near‐IR, as a function of composition. This study introduces optical properties of novel MXenes, benefits the interpretation of 2D materials spectroscopy, and suggests the tremendous potential for this class of optoelectronic building blocks.

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Section: Solid State Mxene Optical Transmission and Reflectancementioning

confidence: 99%

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

Maleski

Shuck

Fafarman

et al. 2020

Advanced Optical Materials

157

158

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“…This device, however, is only able to produce a 10 nm photonic structural shift in the presence of analyte cells, which was insufficient for visual colorimetric detection of Escherichia coli in practical uses [65]. Furthermore, while the LSPRs of plasmonic Au are mainly observed in the visible range, titanium (IV) carbide (Ti 3 C 2 ) nanoparticles could produce LSPR that are tunable to near-infrared wavelengths [79,80]. In these studies, a curved photonic nanojet, dubbed "photonic hook," was generated using a high-intensity narrow light beam generated by dielectric structures such as gold or Ti 3 C 2 MXene nanoparticles.…”

Section: Plasmon-photonic Biosensorsmentioning

confidence: 99%

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

et al. 2020

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Issues related to global energy and environment as well as health crisis are currently some of the greatest challenges faced by humanity, which compel us to develop new pollution-free and sustainable energy sources, as well as next-generation biodiagnostic solutions. Optical functional nanostructures that manipulate and confine light on a nanometer scale have recently emerged as leading candidates for a wide range of applications in solar energy conversion and biosensing. In this review, recent research progress in the development of photonic and plasmonic nanostructures for various applications in solar energy conversion, such as photovoltaics, photothermal conversion, and photocatalysis, is highlighted. Furthermore, the combination of photonic and plasmonic nanostructures for developing high-efficiency solar energy conversion systems is explored and discussed. We also discuss recent applications of photonic–plasmonic-based biosensors in the rapid management of infectious diseases at point-of-care as well as terahertz biosensing and imaging for improving global health. Finally, we discuss the current challenges and future prospects associated with the existing solar energy conversion and biosensing systems.

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“…In these studies, both surface plasmons (SPs) as well as bulk plasmons and interband transitions (IBTs) were identified. Optical forces on MXene nanoparticles in the near-infrared have been calculated using the finite-difference time-domain method [20]. Non-linear optical properties of MXenes have also been studied [21].…”

Section: Introductionmentioning

confidence: 99%

Interband, Surface Plasmon and Fano Resonances in Titanium Carbide (MXene) Nanoparticles in the Visible to Infrared Range

et al. 2021

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Since the discovery of the optical properties of two-dimensional (2D) titanium carbide (MXene) conductive material, an ever increasing interest has been devoted towards understanding it as a plasmonic substrate or nanoparticle. This noble metal-free alternative holds promise not only due to its lower cost but also its 2D nature, hydrophilicity and apparent bio-compatibility. Herein, the optical properties of the most widely studied Ti3C2Tx MXene nanosheets are theoretically analyzed and absorption cross-sections are calculated exploiting available experimental data on its dielectric function. The occurrence of quadrupole surface plasmon mode in the optical absorption spectra of large MXene nanoparticles is demonstrated for the first time. The resonance wavelengths corresponding to interband transitions, longitudinal and transversal dipole oscillations and quadrupole longitudinal surface plasmon mode are identified for single and coupled nanoparticles by modeling their shapes as ellipsoids, disks and cylinders. A new mechanism of excitation of longwave transversal surface plasmon oscillations by an external electric field perpendicular to the direction of charge oscillations is presented. Excitingly enough, a new effect in coupled MXene nanoparticles—Fano resonance—is unveiled. The results of calculations are compared to known experimental data on electron absorption spectroscopy, and good agreement is demonstrated.

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Photonic hook formation in near-infrared with MXene Ti₃C₂ nanoparticles

Abstract: MXene, a recently developed 2D material, has attracted considerable attention because of its graphene‐like but highly tunable properties. It appears that the metallic properties of MXene titanium carbide are pronounced...

Cited by 30 publications

References 58 publications

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

Interband, Surface Plasmon and Fano Resonances in Titanium Carbide (MXene) Nanoparticles in the Visible to Infrared Range

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Photonic hook formation in near-infrared with MXene Ti3C2 nanoparticles

Abstract: MXene, a recently developed 2D material, has attracted considerable attention because of its graphene‐like but highly tunable properties. It appears that the metallic properties of MXene titanium carbide are pronounced...

Cited by 30 publications

References 58 publications

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

The Broad Chromatic Range of Two‐Dimensional Transition Metal Carbides

Photonic–Plasmonic Nanostructures for Solar Energy Utilization and Emerging Biosensors

Interband, Surface Plasmon and Fano Resonances in Titanium Carbide (MXene) Nanoparticles in the Visible to Infrared Range

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Photonic hook formation in near-infrared with MXene Ti₃C₂ nanoparticles