Recent progress in the assembly of nanodevices and van der Waals heterostructures by deterministic placement of 2D materials

Frisenda, Riccardo; Navarro‐Moratalla, Efrén; Gant, Patricia; Lara, David Pérez de; Jarillo‐Herrero, Pablo; Gorbachev, Roman; Castellanos-Gómez, Andrés

doi:10.1039/c7cs00556c

Cited by 523 publications

(475 citation statements)

References 48 publications

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“…S4). We note that the Raman spectra of TiS 2 flakes thinner than 65 nm have very low signal to noise ratio, what is probably related with sulfur vacancies and/or intercalated Ti ions, other defects in the titanium disulfide thin film structures, or more likely low absorption coefficient of TiS 2 , or faster structural degradation of very thin TiS 2 layers as observed for others 2D materials …”

Section: Calculated Parameters From Fit Of Equations and To Temperamentioning

confidence: 70%

Temperature‐induced phonon behavior in titanium disulfide (TiS₂) nanosheets

Dużyńska

Judek

Wilczyński

et al. 2019

J Raman Spectroscopy

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A detailed study of temperature‐dependent phonon properties of exfoliated titanium disulphide (TiS2) nanosheets probed by Raman spectroscopy in the 80‐ to 450‐K temperature range is reported here. The TiS2 Raman mode (Eg, A1g, and Sh) positions exhibit linear shift dependences; however, in contradiction to typical behavior, the Sh mode surprisingly exhibits positive first‐order temperature coefficient (χ=0.0592 cm‐1/K) with increase of the temperature. In addition, the widths of studied peaks typically increase with temperature and peak intensity ratio shows no changes proving that relative phonon population is not affected by temperature. Our findings can be useful for further analysis of phonon properties and determination of thermal conductivity of supported TiS2 thin films for advanced electronics devices.

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Section: Calculated Parameters From Fit Of Equations and To Temperamentioning

confidence: 70%

Temperature‐induced phonon behavior in titanium disulfide (TiS₂) nanosheets

Dużyńska

Judek

Wilczyński

et al. 2019

J Raman Spectroscopy

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“…Given the similarity between conventional processing methods for rigid (SiO 2 /Si) and flexible substrates, a more detailed description of these methods can be found in the respective section of other reviews …”

Section: D Materials Processing In Flexible Substratesmentioning

confidence: 99%

Flexible Photodetector Based on 2D Materials: Processing, Architectures, and Applications

Dong

Simões

Yang

2020

Adv Materials Inter

125

111

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Flexible photodetectors have emerged during the past few years for applications in healthcare, security, and environmental monitoring. Recently, 2D materials have started being implemented as functional layers in flexible photodetector due to their outstanding optoelectronic characteristics paired with high mechanical flexibility. In this work, the authors analyze the progress of 2D material‐based flexible photodetectors architectures, with a focus on graphene family, (Di)chalcogenides and van der Waals heterostructures. The optical and mechanical characteristics of 2D materials flexible photodetectors are systematically analyzed. Furthermore, the processing techniques compatible with flexible substrates and proof‐of‐concept sensors integrating 2D material flexible photodetectors are also reviewed. In the last section, the remaining challenges and future perspectives are discussed, envisioning to support future developments in the field.

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“…Besides the straightforward engineering of interface properties, stacks of vdW materials can support hybridized polaritonic modes. For example, in an h‐BN‐graphene heterostructure, graphene plasmons and h‐BN phonons hybridize into infrared surface plasmon–phonon polaritons .…”

Section: Polaritonic Dispersion Engineering In Van Der Waals Crystalsmentioning

confidence: 99%

Functional Mid‐Infrared Polaritonics in van der Waals Crystals

Kim

Menabde

Brar

et al. 2019

Advanced Optical Materials

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Despite high scientific and technological potential, nanophotonics research in the mid‐infrared regime remains relatively less explored compared to other frequency bands, largely because the mid‐infrared requires a totally different set of optical materials. Polaritons in layered 2D materials, or van der Waals (vdW) crystals, provide a new set of building blocks for mid‐infrared nanophotonics. Herein, the recently reported polaritonic properties of various vdW crystals are summarized in the context of their mid‐infrared applications. Both polaritons in vdW crystals with naturally anisotropic atomic structures as well as tunable plasmon polaritons in vdW semimetals are discussed. The extreme field confinement of 2D polaritons (confinement factors ≈100) enhances both their radiative heat transfer as well as the optical coupling to the vibrational modes of molecules, allowing for highly sensitive chemical detection. Their tunable properties, meanwhile, enable dynamic modulation of mid‐infrared light to realize dynamic phase shifters, mid‐infrared modulators, and spectrally tunable thermal emitters. By vertically stacking vdW crystals, it is possible to create a large variety of new effective materials with substantially different polaritonic properties compared to their building blocks.

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Recent progress in the assembly of nanodevices and van der Waals heterostructures by deterministic placement of 2D materials

Abstract: Designer heterostructures can be assembled layer-by-layer with unmatched precision thanks to the recently developed deterministic placement methods to transfer two-dimensional materials.

Cited by 523 publications

References 48 publications

Temperature‐induced phonon behavior in titanium disulfide (TiS₂) nanosheets

Temperature‐induced phonon behavior in titanium disulfide (TiS₂) nanosheets

Flexible Photodetector Based on 2D Materials: Processing, Architectures, and Applications

Functional Mid‐Infrared Polaritonics in van der Waals Crystals

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Recent progress in the assembly of nanodevices and van der Waals heterostructures by deterministic placement of 2D materials

Abstract: Designer heterostructures can be assembled layer-by-layer with unmatched precision thanks to the recently developed deterministic placement methods to transfer two-dimensional materials.

Cited by 523 publications

References 48 publications

Temperature‐induced phonon behavior in titanium disulfide (TiS2) nanosheets

Temperature‐induced phonon behavior in titanium disulfide (TiS2) nanosheets

Flexible Photodetector Based on 2D Materials: Processing, Architectures, and Applications

Functional Mid‐Infrared Polaritonics in van der Waals Crystals

Contact Info

Product

Resources

About

Temperature‐induced phonon behavior in titanium disulfide (TiS₂) nanosheets

Temperature‐induced phonon behavior in titanium disulfide (TiS₂) nanosheets