Silicon Nanophotonics for Light Manipulation

2019 ◽  
Author(s):  
Daoxin Dai ◽  
Jiang Li ◽  
Dajian Liu ◽  
Yaocheng Shi
Keyword(s):  
Silicon Nanophotonics ◽  
Light Manipulation

Silicon nanophotonics for on-chip light manipulation

2018 ◽  
Vol 27 (10) ◽  
pp. 104208 ◽  
Author(s):  
Jingshu Guo ◽  
Daoxin Dai
Keyword(s):  
Silicon Nanophotonics ◽  
Light Manipulation ◽  
On Chip

scholarly journals Extraordinary Optical Transmission by Hybrid Phonon–Plasmon Polaritons Using hBN Embedded in Plasmonic Nanoslits

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1567
Author(s):  
Shinpei Ogawa ◽  
Shoichiro Fukushima ◽  
Masaaki Shimatani
Keyword(s):  
Optical Transmission ◽  
Hexagonal Boron Nitride ◽  
Incident Angle ◽  
Optical Filters ◽  
Extraordinary Optical Transmission ◽  
Light Manipulation ◽  
Rigorous Coupled Wave Analysis ◽  
Fabry Perot ◽  
Hyperbolic Dispersion ◽  
Rigorous Coupled Wave

Hexagonal boron nitride (hBN) exhibits natural hyperbolic dispersion in the infrared (IR) wavelength spectrum. In particular, the hybridization of its hyperbolic phonon polaritons (HPPs) and surface plasmon resonances (SPRs) induced by metallic nanostructures is expected to serve as a new platform for novel light manipulation. In this study, the transmission properties of embedded hBN in metallic one-dimensional (1D) nanoslits were theoretically investigated using a rigorous coupled wave analysis method. Extraordinary optical transmission (EOT) was observed in the type-II Reststrahlen band, which was attributed to the hybridization of HPPs in hBN and SPRs in 1D nanoslits. The calculated electric field distributions indicated that the unique Fabry–Pérot-like resonance was induced by the hybridization of HPPs and SPRs in an embedded hBN cavity. The trajectory of the confined light was a zigzag owing to the hyperbolicity of hBN, and its resonance number depended primarily on the aspect ratio of the 1D nanoslit. Such an EOT is also independent of the slit width and incident angle of light. These findings can not only assist in the development of improved strategies for the extreme confinement of IR light but may also be applied to ultrathin optical filters, advanced photodetectors, and optical devices.

scholarly journals A microbiota–root–shoot circuit favours Arabidopsis growth over defence under suboptimal light

Nature Plants ◽  
2021 ◽  
Author(s):  
Shiji Hou ◽  
Thorsten Thiergart ◽  
Nathan Vannier ◽  
Fantin Mesny ◽  
Jörg Ziegler ◽  
...  
Keyword(s):  
Stress Responses ◽  
Photosynthetically Active Radiation ◽  
Bacterial Community Composition ◽  
Light Condition ◽  
Long Distance ◽  
Active Radiation ◽  
Light Manipulation ◽  
Growth Deficiency ◽  
Dependent Growth ◽  
Control Light

AbstractBidirectional root–shoot signalling is probably key in orchestrating stress responses and ensuring plant survival. Here, we show that Arabidopsis thaliana responses to microbial root commensals and light are interconnected along a microbiota–root–shoot axis. Microbiota and light manipulation experiments in a gnotobiotic plant system reveal that low photosynthetically active radiation perceived by leaves induces long-distance modulation of root bacterial communities but not fungal or oomycete communities. Reciprocally, microbial commensals alleviate plant growth deficiency under low photosynthetically active radiation. This growth rescue was associated with reduced microbiota-induced aboveground defence responses and altered resistance to foliar pathogens compared with the control light condition. Inspection of a set of A. thaliana mutants reveals that this microbiota- and light-dependent growth–defence trade-off is directly explained by belowground bacterial community composition and requires the host transcriptional regulator MYC2. Our work indicates that aboveground stress responses in plants can be modulated by signals from microbial root commensals.

Site-selective, resonant photochemical desorption of metal atoms with laser light: manipulation of metal surfaces on the atomic scale

2003 ◽  
Vol 526 (1-2) ◽  
pp. L151-L157 ◽  
Author(s):  
D. Martin ◽  
T. Jacob ◽  
F. Stietz ◽  
B. Fricke ◽  
F. Träger
Keyword(s):  
Metal Surfaces ◽  
Laser Light ◽  
Atomic Scale ◽  
Light Manipulation ◽  
Metal Atoms ◽  
Site Selective

Light manipulation in a dually ordered porous TiO2–rGO composite for efficient solar energy utilization

2017 ◽  
Vol 4 (4) ◽  
pp. 578-580 ◽  
Author(s):  
Xiaoyong Lai
Keyword(s):  
Solar Energy ◽  
Light Response ◽  
Energy Utilization ◽  
Porous Tio2 ◽  
Light Manipulation ◽  
Solar Energy Utilization ◽  
Ordered Porous

A dually ordered macro-mesoporous TiO2–rGO composite with tunable light response was developed for efficient solar energy utilization.

scholarly journals Light manipulation with flat and conformal inhomogeneous dispersive impedance sheets: an efficient FDTD modeling

2016 ◽  
Vol 55 (11) ◽  
pp. 2967 ◽  
Author(s):  
Samad Jafar-Zanjani ◽  
Jierong Cheng ◽  
Hossein Mosallaei
Keyword(s):  
Light Manipulation

Polarization-independent broadband achromatic metalens in the mid-infrared (3-5 μm) region

2021 ◽  
Author(s):  
Wenhui Xiong ◽  
Chenchen Sha ◽  
Jianping Ding
Keyword(s):  
Numerical Simulation ◽  
Infrared Imaging ◽  
Chromatic Aberration ◽  
Infrared Region ◽  
Mid Infrared ◽  
Light Manipulation ◽  
Wavefront Shaping ◽  
Polarization Independent

Abstract With superior capabilities for light manipulation and wavefront shaping, the metasurface recently has caught growing attention. However, the presence of chromatic aberration hinders metasurfaces, especially metalenses, from wider applications. Here, we design a polarization-independent broadband achromatic focusing metalens in the mid-infrared region, which covers continuous bands in 3-5 μm. Numerical simulation shows that different wavelengths can be focused to the same plane with a nearly diffraction-limited resolution, and can achieve an average focusing efficiency of nearly 70% in the whole bandwidth. We expect that our approach can underpin the development of integrated and mid-infrared imaging and detection.

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