Asymmetrically Curved Hyperbolic Metamaterial Structure with Gradient Thicknesses for Enhanced Directional Spontaneous Emission

Wang, Lu; Li, Shilong; Zhang, Biran; Qin, Yuzhou; Tian, Ziao; Fang, Yangfu; Li, Yonglei; Liu, Zhaowei; Mei, Yongfeng

doi:10.1021/acsami.7b19721

Cited by 14 publications

(7 citation statements)

References 31 publications

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“…The study suggested that the Purcell factor increases as the unit cell thickness decreases, exhibiting the maximum enhancement factor of about 40. Related analysis was done in work 84 , where the number of layers and their thickness were varied to study changes of the Purcell factor. The HMM was composed of alternate silver and silicon layers with a dipolar emitter on top of it.…”

Section: Metal-dielectric Multilayersmentioning

confidence: 99%

Photoluminescence control by hyperbolic metamaterials and metasurfaces: a review

Beliaev

Takayama

Melentiev

et al. 2021

OEA

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Photoluminescence including fluorescence plays a great role in a wide variety of applications from biomedical sensing and imaging to optoelectronics. Therefore, the enhancement and control of photoluminescence has immense impact on both fundamental scientific research and aforementioned applications. Among various nanophotonic schemes and nanostructures to enhance the photoluminescence, we focus on a certain type of nanostructures, hyperbolic metamaterials (HMMs). HMMs are highly anisotropic metamaterials, which produce intense localized electric fields. Therefore, HMMs naturally boost photoluminescence from dye molecules, quantum dots, nitrogen-vacancy centers in diamonds, perovskites and transition metal dichalcogenides. We provide an overview of various configurations of HMMs, including metal-dielectric multilayers, trenches, metallic nanowires, and cavity structures fabricated with the use of noble metals, transparent conductive oxides, and refractory metals as plasmonic elements. We also discuss lasing action realized with HMMs.

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Section: Metal-dielectric Multilayersmentioning

confidence: 99%

Photoluminescence control by hyperbolic metamaterials and metasurfaces: a review

Beliaev

Takayama

Melentiev

et al. 2021

OEA

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“…However, due to the limitation of dissipation and large impedance mismatch in bulk HMMs, it has been demonstrated theoretically and experimentally that the emission rate and intensity will be higher within the HMMs than near the interface. For example, using nanopatterned Ag–Si multilayer HMMs, the spontaneous recombination rate in InGaN/GaN quantum wells (QWs) can be enhanced to ≈160‐fold in broadband .…”

Section: D Bulk Hyperbolic Metamaterialsmentioning

confidence: 99%

“…Compared with other optical metamaterials, like chiral and split ring resonator–based metamaterials, HMMs have advantages of relative ease of fabrication at optical frequencies, broadband nonresonant and 3D bulk responses, and flexible wavelength tunability. As a result, HMMs have attracted widespread interest and become a good multifunctional platform for many exotic applications, such as optical negative refraction and light beam steering, subdiffraction‐limited imaging and nanolithography, spontaneous and thermal emission engineering, ultrasensitive optical, biological, and chemical sensing, omnidirectional and broadband optical absorption …”

Section: Introductionmentioning

confidence: 99%

Hyperbolic Metamaterials and Metasurfaces: Fundamentals and Applications

Huo

Zhang

Liang

et al. 2019

Advanced Optical Materials

171

107

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and their potential applications in various fields, including optical waveguiding, imaging, ultrasensitive optical sensing, and electromagnetic cloaking.Among the different types of optical metamaterials proposed and demonstrated to date, there is one class of highly anisotropic metamaterials which exhibit hyperbolic (or indefinite) dispersions, depending on their effective electric tensors (here, we only consider nonmagnetic media with unit magnetic tensors). Such hyperbolic metamaterials (HMMs) have reached the ultra-anisotropic limit of traditional uniaxial crystal and lead to dramatic changes for the light propagation behaviors. [12][13][14][15][16] Compared with other optical metamaterials, like chiral [17,18] and split ring resonator-based metamaterials, [19,20] HMMs have advantages of relative ease of fabrication at optical frequencies, broadband nonresonant and 3D bulk responses, and flexible wavelength tunability. As a result, HMMs have attracted widespread interest and become a good multifunctional platform for many exotic applications, such as optical negative refraction and light beam steering, [12,[21][22][23][24][25][26][27][28] subdiffraction-limited imaging and nanolithography, [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] spontaneous and thermal emission engineering, [71][72][73][74][75][76][77][78][79][80] ultrasensitive optical, biological, and chemical sensing, [81][82][83][84][85][86][87][88][89] omnidirectional and broadband optical absorption. [90][91][92][93] On the other hand, ultrathin metasurfaces, which comprise a class of planar optical metamaterials with many subwavelength structural units, have attracted much attention due to their ability of locally controlling the phase, amplitude, and polarization of light at the interface between two natural materials. [94][95][96][97] 2D planar metasurfaces have many advantages over bulk metamaterials, including simplifying the fabrication and integration process, reducing energy loss, and being compatible with other photonics devices. In this context, as an efficient surface wave modulation platform, hyperbolic metasurfaces (HMSs) with in-plane hyperbolic dispersions have a potential influence on the development of on-chip planar photonic devices. [95,98] In this review, we first discuss the dispersions and realizations of hyperbolic media. Then, we review the recent achievements of various optical applications based on 3D bulk HMMs and 2D planar HMSs. It should be stressed that, although some application scenarios for 3D HMMs and 2D HMSs are analogous, in fact they are not equal to each other because additional constrains will be introduced on the surface wave as the dimensionality degraded, which is accompanied by fancy in-plane Recent advances in nanofabrication and characterization technologies have spurred many breakthroughs in the field of optical metamaterials and metasurfaces that provide novel ways of manipulating light interaction in a well controllable manner. Among these artificial nanostructured materials, ...

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“…Selective coupling between 3D WGMs in rolled-up microtubes and localized surface plasmon resonances (LSPRs) has been demonstrated recently. ,, Utilizing the naturally existing outer notch (i.e., the end point of nanomembranes after rolling), a localized hotspot can be created at the sub-100 nm gap by deposition of a thin metal layer, which renders the design promising for ultrasensitive and spatially selective detection of analyte binding events. Apart from integrating dielectric tubes with metal nanostructures, direct rolling of stacked dielectric and metal layers have also been investigated with other exotic optical properties, such as anisotropic metamaterials with hyperbolic dispersion. , Theoretical work on rolled-up metamaterial-based biosensors has been reported with an improved sensing performance compared with conventional all-dielectric rolled-up microtubes …”

Section: Rolled-up Nanomembranes As Microtubular Sensorsmentioning

confidence: 99%

“…Apart from integrating dielectric tubes with metal nanostructures, direct rolling of stacked dielectric and metal layers have also been investigated with other exotic optical properties, such as anisotropic metamaterials with hyperbolic dispersion. 132,133 Theoretical work on rolled-up metamaterial-based biosensors has been reported with an improved sensing performance compared with conventional all-dielectric rolled-up microtubes. 134 Rolled-Up Microtube-Based Passive Optical Sensors.…”

Section: Acs Sensorsmentioning

confidence: 99%

Three-Dimensional Microtubular Devices for Lab-on-a-Chip Sensing Applications

et al. 2019

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The rapid advance of micro-/nanofabrication technologies opens up new opportunities for miniaturized sensing devices based on novel three-dimensional (3D) architectures. Notably, microtubular geometry exhibits natural advantages for sensing applications due to its unique properties including the hollow sensing channel, high surface−volume ratio, well-controlled shape parameters and compatibility to on-chip integration. Here the state-of-the-art sensing techniques based on microtubular devices are reviewed. The developed microtubular sensors cover microcapillaries, rolled-up nanomembranes, chemically synthesized tubular arrays, and photoresist-based tubular structures via 3D printing. Various types of microtubular sensors working in optical, electrical, and magnetic principles exhibit an extremely broad scope of sensing targets including liquids, biomolecules, micrometer-sized/nanosized objects, and gases. Moreover, they have also been applied for the detection of mechanical, acoustic, and magnetic fields as well as fluorescence signals in labeling-based analyses. At last, a comprehensive outlook of future research on microtubular sensors is discussed on pushing the detection limit, extending the functionality, and taking a step forward to a compact and integrable core module in a lab-on-a-chip analytical system for understanding fundamental biological events or performing accurate point-of-care diagnostics.

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Asymmetrically Curved Hyperbolic Metamaterial Structure with Gradient Thicknesses for Enhanced Directional Spontaneous Emission

Cited by 14 publications

References 31 publications

Photoluminescence control by hyperbolic metamaterials and metasurfaces: a review

Photoluminescence control by hyperbolic metamaterials and metasurfaces: a review

Hyperbolic Metamaterials and Metasurfaces: Fundamentals and Applications

Three-Dimensional Microtubular Devices for Lab-on-a-Chip Sensing Applications

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