Fast modulation of surface plasmons based on the photothermal effect of nonvolatile solid thin films

Chen, Fangqi; Yao, Jiacheng; Wang, Xujie; Wang, Shuangshuang; Liu, Ze; Ding, Tao

doi:10.1039/d2nr05527a

Cited by 7 publications

(7 citation statements)

References 68 publications

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“…Since a photothermal effect from the metal NW itself can modify the dielectric property and the propagating SP modes, the transmitted light intensity can potentially be optically modulated. 22 This is conventionally performed with Ag NWs which, however, can be easily damaged with long-term modulation (Figure 2g). In contrast, the Al NWs can support the propagating SP with power up to 4 mW, which shows stable waveguiding performance with a relative standard deviation (RSD) of 2.39% (Figure S13 in the SI).…”

Section: Resultsmentioning

confidence: 99%

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Superplastic Nanomolding of Aluminum Waveguides for Subwavelength Light Routing, Splitting, and Encryption

Yao,

Fang,

et al. 2023

ACS Nano

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Superplastic Nanomolding of Aluminum Waveguides for Subwavelength Light Routing, Splitting, and Encryption

Yao,

Fang,

et al. 2023

ACS Nano

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“…) , (10) in which, E v and E c denote the valence and conduction band edges, N v and N c denote the effective DOS in the valence and conduction bands, k B denotes the Boltzmann constant, and T denotes the absolute temperature.…”

Section: γ W → ∞mentioning

confidence: 99%

“…As well, it is possible to determine the electron mobility ( ) by applying the formula , where τ is the electron relaxation time, along with additional factors from Eqs. ( 9) and (10).…”

Section: The Effect Of Electron Relaxation Ratementioning

confidence: 99%

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THz plasmonics and electronics in germanene nanostrips

Tene,

Guevara,

Tubon-Usca

et al. 2023

J. Semicond.

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Germanene nanostrips (GeNSs) have garnered significant attention in modern semiconductor technology due to their exceptional physical characteristics, positioning them as promising candidates for a wide range of applications. GeNSs exhibit a two-dimensional (buckled) honeycomb-like lattice, which is similar to germanene but with controllable bandgaps. The modeling of GeNSs is essential for developing appropriate synthesis methods as it enables understanding and controlling the growth process of these systems. Indeed, one can adjust the strip width, which in turn can tune the bandgap and plasmonic response of the material to meet specific device requirements. In this study, the objective is to investigate the electronic behavior and THz plasmon features of GeNSs (≥100 nm wide). A semi-analytical model based on the charge-carrier velocity of freestanding germanene is utilized for this purpose. The charge-carrier velocity of freestanding germanene is determined through the GW approximation ( m·s−1). Within the width range of 100 to 500 nm, GeNSs exhibit narrow bandgaps, typically measuring only a few meV. Specifically, upon analysis, it was found that the bandgaps of the investigated GeNSs ranged between 29 and 6 meV. As well, these nanostrips exhibit -like plasmon dispersions, with their connected plasmonic frequency (≤30 THz) capable of being manipulated by varying parameters such as strip width, excitation plasmon angle, and sample quality. These manipulations can lead to frequency variations, either increasing or decreasing, as well as shifts towards larger momentum values. The outcomes of our study serve as a foundational motivation for future experiments, and further confirmation is needed to validate the reported results.

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Active plasmonic nanodevices: From basic principles to emerging applications

Zhang,

Ding

2024

Responsive Materials

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Tunable plasmonics has shown a wide range of applications in (bio)chemical sensing, displays, actuators, photonic chips, biomedicine, etc. in the last 2 decades. This review focuses on their recent development from the device perspective, which involves the understanding of fundamental principles and specific applications with desired functionality and compatibility. We classify these active plasmonic devices based on the nature of their structures and working environment as colloidal‐based, chip‐based, and colloidal chip‐based to further elaborate their performance and functions. We also highlight recent progress on tunable surface‐enhanced Raman spectroscopy, metasurfaces, and chiroptics to show the emerging applications of tunable plasmonic systems. We conclude this review with a general perception of the research trend in this field and challenges for their practical applications.

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Fast modulation of surface plasmons based on the photothermal effect of nonvolatile solid thin films

Abstract: Plasmon modulation based on the photothermal effect of non-volatile solid thin films (GSTs) is realized at a speed of hundreds of kHz, which is fundamental for optoplasmonic nanodevices.

Cited by 7 publications

References 68 publications

Superplastic Nanomolding of Aluminum Waveguides for Subwavelength Light Routing, Splitting, and Encryption

Superplastic Nanomolding of Aluminum Waveguides for Subwavelength Light Routing, Splitting, and Encryption

THz plasmonics and electronics in germanene nanostrips

Active plasmonic nanodevices: From basic principles to emerging applications

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