scholarly journals Hyperbolic metamaterials: fusing artificial structures to natural 2D materials

eLight ◽  
2022 ◽  
Vol 2 (1) ◽  
Author(s):  
Dasol Lee ◽  
Sunae So ◽  
Guangwei Hu ◽  
Minkyung Kim ◽  
Trevon Badloe ◽  
...  
Keyword(s):  
Negative Refraction ◽  
State Of The Art ◽  
2D Materials ◽  
Super Resolution ◽  
Hyperbolic Metamaterials ◽  
Optical Metamaterials ◽  
Innovative Method ◽  
High Anisotropy ◽  
Hyperbolic Dispersion ◽  
Resolution Imaging

AbstractOptical metamaterials have presented an innovative method of manipulating light. Hyperbolic metamaterials have an extremely high anisotropy with a hyperbolic dispersion relation. They are able to support high-k modes and exhibit a high density of states which produce distinctive properties that have been exploited in various applications, such as super-resolution imaging, negative refraction, and enhanced emission control. Here, state-of-the-art hyperbolic metamaterials are reviewed, starting from the fundamental principles to applications of artificially structured hyperbolic media to suggest ways to fuse natural two-dimensional hyperbolic materials. The review concludes by indicating the current challenges and our vision for future applications of hyperbolic metamaterials.

OPTICAL METAMATERIALS AND SUPER-RESOLUTION IMAGING

COSMOS ◽  
2011 ◽  
Vol 07 (01) ◽  
pp. 43-63
Author(s):  
EUNICE S. P. LEONG ◽  
HONG LIU ◽  
YAN JUN LIU ◽  
JINGHUA TENG
Keyword(s):  
Super Resolution ◽  
Optical Metamaterials ◽  
Resolution Imaging

SUPER-RESOLUTION IMAGING OF THE GRADED PHOTONIC CRYSTAL WITH NEGATIVE REFRACTION

2012 ◽  
Vol 25 ◽  
pp. 185-195 ◽  
Author(s):  
Meiling Liu ◽  
Maojin Yun ◽  
Feng Xia ◽  
Weijin Kong ◽  
Yong Wan ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Negative Refraction ◽  
Super Resolution ◽  
Resolution Imaging

scholarly journals Visualizing and discovering cellular structures with super-resolution microscopy

Science ◽  
2018 ◽  
Vol 361 (6405) ◽  
pp. 880-887 ◽  
Author(s):  
Yaron M. Sigal ◽  
Ruobo Zhou ◽  
Xiaowei Zhuang
Keyword(s):  
State Of The Art ◽  
Super Resolution ◽  
Building Blocks ◽  
Diffraction Limit ◽  
Three Dimensions ◽  
Cellular Structures ◽  
Nanometer Scale ◽  
Molecular Building Blocks ◽  
Resolution Imaging ◽  
Super Resolution Microscopy

Super-resolution microscopy has overcome a long-held resolution barrier—the diffraction limit—in light microscopy and enabled visualization of previously invisible molecular details in biological systems. Since their conception, super-resolution imaging methods have continually evolved and can now be used to image cellular structures in three dimensions, multiple colors, and living systems with nanometer-scale resolution. These methods have been applied to answer questions involving the organization, interaction, stoichiometry, and dynamics of individual molecular building blocks and their integration into functional machineries in cells and tissues. In this Review, we provide an overview of super-resolution methods, their state-of-the-art capabilities, and their constantly expanding applications to biology, with a focus on the latter. We will also describe the current technical challenges and future advances anticipated in super-resolution imaging.

scholarly journals Super-Resolution Imaging Approaches for Quantifying F-Actin in Immune Cells

2021 ◽  
Vol 9 ◽  
Author(s):  
Evelyn Garlick ◽  
Steven G. Thomas ◽  
Dylan M. Owen
Keyword(s):  
Immune Cells ◽  
State Of The Art ◽  
Super Resolution ◽  
Biological Processes ◽  
Important Research ◽  
Analysis Software ◽  
Cellular Machinery ◽  
Research Goal ◽  
Resolution Imaging ◽  
Statistical Analysis Software

Immune cells comprise a diverse set of cells that undergo a complex array of biological processes that must be tightly regulated. A key component of cellular machinery that achieves this is the cytoskeleton. Therefore, imaging and quantitatively describing the architecture and dynamics of the cytoskeleton is an important research goal. Optical microscopy is well suited to this task. Here, we review the latest in the state-of-the-art methodology for labeling the cytoskeleton, fluorescence microscopy hardware suitable for such imaging and quantitative statistical analysis software applicable to describing cytoskeletal structures. We also highlight ongoing challenges and areas for future development.

scholarly journals Realization of broadband negative refraction in visible range using vertically stacked hyperbolic metamaterials

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sanghun Bang ◽  
Sunae So ◽  
Junsuk Rho
Keyword(s):  
Negative Refraction ◽  
Super Resolution ◽  
Visible Spectrum ◽  
Dielectric Materials ◽  
Multilayer Structures ◽  
Visible Range ◽  
Optical Phenomenon ◽  
Optical Resonances ◽  
Resolution Imaging ◽  
Invisibility Cloaks

Abstract Negative refraction has generated much interest recently with its unprecedented optical phenomenon. However, a broadband negative refraction has been challenging because they mainly involve optical resonances. This paper reports the realization of broadband negative refraction in the visible spectrum by using vertically-stacked metal-dielectric multilayer structures. Such structure exploits the characteristics of the constituent metal and dielectric materials, and does not require resonance to achieve negative refraction. Broadband negative refraction (wavelength 270–1300 nm) is numerically demonstrated. Compared to conventional horizontally-stacked multilayer structures, the vertically-stacked multilayer structure has a broader range of working wavelength in the visible range, with higher transmittance. We also report a variety of material combinations with broad working wavelength. The broadband negative refraction metamaterial provides an effective way to manipulate light and may have applications in super-resolution imaging, and invisibility cloaks.

scholarly journals Tunable Plasmonic and Hyperbolic Metamaterials Based on Enhanced Nonlinear Response

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Christos Argyropoulos ◽  
Francesco Monticone ◽  
Nasim Mohammadi Estakhri ◽  
Andrea Alù
Keyword(s):  
Negative Refraction ◽  
Nonlinear Effects ◽  
Optical Switches ◽  
Third Order ◽  
Hyperbolic Metamaterials ◽  
All Optical ◽  
Hyperbolic Dispersion ◽  
Tunable Sensors ◽  
Scattering Response ◽  
Induced Transparency

We present here tunable and reconfigurable designs of linear and nonlinear plasmonic and hyperbolic metamaterials. Rich scattering features of multilayered composite nanoparticles are demonstrated, which include complex and exotic scattering signatures combining multiple dipolar Fano resonances and electromagnetic induced transparency (EIT) features. These dipole-dipole multi-Fano scattering responses can be further tuned through altering the plasmonic properties of the concentric layers or the permittivity of the core, for instance, by the presence of nonlinearities. Strong third-order nonlinear effects, such as optical bistability, may also be induced in the scattering response of nonlinear nanoparticles due to the highly enhanced and confined fields inside their core. Nonlinear hyperbolic metamaterial designs are also explored, which can realize tunable positive-to-negative refraction at the same frequency, as a function of the input intensity. Negative Goos-Hänchen shift is demonstrated based only on the hyperbolic dispersion properties of these layered metamaterials without the usual need of negative index metamaterials. The Goos-Hänchen shift may be tuned from positive-to-negative values, when the structure is illuminated with different frequencies. A plethora of applications are envisioned based on the proposed tunable metamaterials, such as ultrafast reconfigurable imaging devices, tunable sensors, novel nanotag designs, and efficient all-optical switches and memories.

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