Sub-wavelength transmission and reflection mode tabletop imaging with 13nm illumination via ptychography CDI

2017 ◽  
Author(s):  
Michael Tanksalvala ◽  
Christina L. Porter ◽  
Dennis F. Gardner ◽  
Michael Gerrity ◽  
Giulia F. Mancini ◽  
...  
2011 ◽  
Vol 38 (6Part13) ◽  
pp. 3524-3525
Author(s):  
S Park ◽  
S Kang ◽  
K Cheong ◽  
T Hwang ◽  
M Lee ◽  
...  

2020 ◽  
Vol 312 ◽  
pp. 213-220
Author(s):  
Alexander A. Sergeev ◽  
Ksenia A. Sergeeva ◽  
Aleksandr Vladimirovich Nepomniaschiy ◽  
Sergey S. Voznesenskiy

This paper is related to the problem of enhancing the optical and functional performance of luminescent gas sensors via its excitation by photonic nanojets. The novel sensor structure consisting of the array of alumina microparticles covered by optical sensitive layer was designed. The parameters of the photonic nanojets generated in both transmission and reflection modes has been numerically end experimentally studied. It was shown that PNJ in reflection mode demonstrates an unexpectedly high enhancement of photoluminescence. It was obtained that the excitation of the sensitive layer by photonic nanojets extends the limit of gaseous ammonia detection up to 0.1 ppm for reflection mode and up to 0.02 ppm for transmission mode.


Sensors ◽  
2021 ◽  
Vol 21 (24) ◽  
pp. 8452
Author(s):  
Stylianos D. Assimonis ◽  
Sandhya Chandravanshi ◽  
Okan Yurduseven ◽  
Dmitry Zelenchuk ◽  
Oleksandr Malyuskin ◽  
...  

In this paper, we present the application of a resonant electric based metamaterial element and its two-dimensional metasurface implementation for a variety of emerging wireless applications. Metasurface apertures developed in this work are synthesized using sub-wavelength sampled resonant electric-based unit-cell structures and can achieve electromagnetic wave manipulation at microwave frequencies. The presented surfaces are implemented in a variety of forms, from absorption surfaces for energy harvesting and wireless power transfer to wave-chaotic surfaces for compressive sensing based single-pixel direction of arrival estimation and reflecting surfaces. It is shown that the resonant electric-synthesized metasurface concept offers a significant potential for these applications with high fidelity absorption, transmission and reflection characteristics within the microwave frequency spectrum.


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