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Article
Open AccessWide field-of-hearing metalens for aberration-free sound capture
Metalenses are instruments that manipulate waves and have exhibited remarkable capabilities to date. However, an important hurdle arises due to the severe hampering of the angular response originating from com...
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Article
Open AccessRecent advancements of metalenses for functional imaging
Metasurfaces can modulate light with periodically arranged subwavelength scatterers, and they can generate arbitrary wavefronts. Therefore, they can be used to realize various optical components. In particular...
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Article
Scalable manufacturing of high-index atomic layer–polymer hybrid metasurfaces for metaphotonics in the visible
Metalenses are attractive alternatives to conventional bulky refractive lenses owing to their superior light-modulating performance and sub-micrometre-scale thicknesses; however, limitations in existing fabric...
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Article
Numerical study on the leakage characteristics of a stepped labyrinth seal with mixed honeycomb cell diameters
As the performance improvement of gas turbines becomes marginal, it is required to develop a seal geometry that can reduce unwanted leakage more effectively than conventional seals. Accordingly, in this paper,...
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Article
Open AccessMetasurface-driven full-space structured light for three-dimensional imaging
Structured light (SL)-based depth-sensing technology illuminates the objects with an array of dots, and backscattered light is monitored to extract three-dimensional information. Conventionally, diffractive op...
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Article
Ultracompact Plasmonic Meta-pixel for Arbitrary Polarization Detection
Polarization of light is a fundamental characteristic which represents the oscillation of electric fields in electromagnetic optics. The utilization of polarization gives opportunities to analyze the light-mat...
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Article
A study on 65 % potential efficiency of the gas turbine combined cycle
This study investigates the possibility of achieving 65 % efficiency in a gas turbine combined cycle. Several options to realize it were compared. A sensitivity analysis was performed for the latest H-class ga...
