scholarly journals Polariton condensation in an organic microcavity utilising a hybrid metal-DBR mirror

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kirsty E. McGhee ◽  
Anton Putintsev ◽  
Rahul Jayaprakash ◽  
Kyriacos Georgiou ◽  
Mary E. O’Kane ◽  
...  
Keyword(s):  
Silver Film ◽  
Silver Layer ◽  
Strongly Coupled ◽  
Simplified Approach ◽  
High Reflectivity ◽  
Bottom Cavity ◽  
Similar Threshold ◽  
Quarter Wave ◽  
Polariton State ◽  
Complete Collapse

AbstractWe have developed a simplified approach to fabricate high-reflectivity mirrors suitable for applications in a strongly-coupled organic-semiconductor microcavity. Such mirrors are based on a small number of quarter-wave dielectric pairs deposited on top of a thick silver film that combine high reflectivity and broad reflectivity bandwidth. Using this approach, we construct a microcavity containing the molecular dye BODIPY-Br in which the bottom cavity mirror is composed of a silver layer coated by a SiO2 and a Nb2O5 film, and show that this cavity undergoes polariton condensation at a similar threshold to that of a control cavity whose bottom mirror consists of ten quarter-wave dielectric pairs. We observe, however, that the roughness of the hybrid mirror—caused by limited adhesion between the silver and the dielectric pair—apparently prevents complete collapse of the population to the ground polariton state above the condensation threshold.

scholarly journals Photonic Spin Hall Effect: Contribution of Polarization Mixing Caused by Anisotropy

2020 ◽  
Vol 2 (4) ◽  
pp. 489-500
Author(s):  
Maxim Mazanov ◽  
Oleh Yermakov ◽  
Ilya Deriy ◽  
Osamu Takayama ◽  
Andrey Bogdanov ◽  
...  
Keyword(s):  
Hall Effect ◽  
Spin Hall Effect ◽  
Optical Systems ◽  
Quarter Wave Plate ◽  
Orbital Interaction ◽  
Spin Orbital ◽  
Simplified Approach ◽  
Beam Incident ◽  
Quarter Wave ◽  
Spin Orbital Interaction

Spin-orbital interaction of light attracts much attention in nanophotonics opening new horizons for modern optical systems and devices. The photonic spin Hall effect or Imbert-Fedorov shift takes a special place among the variety of spin-orbital interaction phenomena. It exhibits as a polarization-dependent transverse light shift usually observed in specular scattering of light at interfaces with anisotropic materials. Nevertheless, the effect of the polarization mixing caused by anisotropy on the Imbert-Fedorov shift is commonly underestimated. In this work, we demonstrate that polarization mixing contribution cannot be ignored for a broad range of optical systems. In particular, we show the dominant influence of the mixing term over the standard one for the polarized optical beam incident at a quarter-wave plate within the paraxial approximation. Moreover, our study reveals a novel contribution with extraordinary polarization dependence not observable within the simplified approach. We believe that these results advance the understanding of photonic spin Hall effect and open new opportunities for spin-dependent optical phenomena.

scholarly journals Nanoplasmonic methods in angular spectroscopy of nanoscale biological objects

2021 ◽  
Vol 23 (4) ◽  
pp. 111-115
Author(s):  
Valeriy V. Yatsishen
Keyword(s):  
Silver Film ◽  
Angular Spectrum ◽  
Silver Layer ◽  
Resonance Spectroscopy ◽  
Layered System ◽  
Narrow Resonance ◽  
Metal Boundary ◽  
Characteristic Features ◽  
High Degree

The paper presents the results of calculating the angular spectra of light reflection under the condition of excitation of surface plasmons in the Kretschman scheme. The silver layer in this scheme plays the role of a reference material, the minimum in the angular spectrum of which serves as a reference point for the shift of the minimum of the angular spectrum when a layer of the studied biological material is added to the considered layered system, which were melanin and biological tissue. As a result of the work, specific pronounced minima in the angular spectra were obtained, which make it possible to identify these materials with a high degree of accuracy due to the narrow resonance peaks in the angular reflection spectra, which are spaced from the peak in the reflection from the silver film by certain angles. The method contains all the characteristic features of the resonance spectroscopy method; the conditions for the excitation of a surface plasmon at the metal boundary act as resonance conditions.

Transparent and miniature FM antenna in printed technology

2018 ◽  
Vol 10 (1) ◽  
pp. 19-24 ◽  
Author(s):  
A. Martin ◽  
C. Gautier ◽  
X. Castel ◽  
M. Himdi
Keyword(s):  
Field Effect Transistor ◽  
Signal To Noise Ratio ◽  
Wire Antenna ◽  
Silver Layer ◽  
Received Signal Strength Indicator ◽  
Fm Radio ◽  
Receiving Antenna ◽  
Quarter Wave ◽  
Effect Transistor ◽  
Visual Impact

AbstractAn optically transparent and electrically small frequency modulation (FM) radio receiving antenna has been designed and fabricated from a mesh silver layer printed onto a glass substrate. The studied FM antenna consists of a transparent meandering monopole associated with a micrometric size MEtal Semiconductor Field Effect transistor. An optical transparency of 87% and a sheet resistance lower than 0.22 Ω/sq are obtained. The received signal strength indicator and the signal-to-noise ratio are both measured and compared with those of a commercial monopole antenna (a quarter-wave wire antenna). The transparent FM antenna exhibits similar radiofrequency performance with, in addition, a low visual impact.

Uniform high-reflectivity silver film deposited by planar magnetron sputtering

Vacuum ◽  
2021 ◽  
Vol 185 ◽  
pp. 109999
Author(s):  
Liyang Mao ◽  
Yanquan Geng ◽  
Yongzhi Cao ◽  
Yongda Yan
Keyword(s):  
Magnetron Sputtering ◽  
Silver Film ◽  
High Reflectivity ◽  
Planar Magnetron

Electroless Deposition of Silver Layer on Silicon of High Density Plasma Bombarment

2012 ◽  
Vol 190-191 ◽  
pp. 474-477
Author(s):  
Yuan Gee Lee
Keyword(s):  
Surface Tension ◽  
High Temperature ◽  
Surface Chemistry ◽  
Electroless Deposition ◽  
Silver Film ◽  
Silver Layer ◽  
High Temperature Annealing ◽  
Si Substrate ◽  
Fine Microstructure ◽  
Density Plasma

Electroless silver film was deposited on the Ti/Si substrate which was suffered from plasma bombardment to modify its surface chemistry. The surface tension of the Ti/Si surface was found to be reduced after plasma bombardment. After thermal annealing, the silver film was smoothened and showed a fine microstructure. However, the recrystal at high temperature annealing facilitated an increase of sheet resistance instaneously.

Electroless Deposition of Silver Layer on Atomic-Layer-Deposited TiN

2012 ◽  
Vol 190-191 ◽  
pp. 471-473
Author(s):  
Yuan Gee Lee
Keyword(s):  
Surface Tension ◽  
Reaction Mechanism ◽  
Electroless Deposition ◽  
Silver Film ◽  
Atomic Layer ◽  
Silver Layer ◽  
Thermal Reliability ◽  
Layer Deposition ◽  
O2 Plasma ◽  
The Continuum

A laminate of silver/atomic layer deposition TiN/Si was prepared to research the thermal reliability. The atomic layer TiN was subjected into different kinds of plasma to modify its surface chemistry. The surface tension of the TiN/Si surface was found to be reduced by O2 plasma bombardment. The reaction mechanism of the continuum of silver film was also explored in this paper.

The application of video-enhanced constrast/differential interference constrast microscopy in conjunction with whole mount electron microscopy to the study of organelle transport

1988 ◽  
Vol 46 ◽  
pp. 66-67
Author(s):  
J. H. Hayden
Keyword(s):  
Electron Microscopy ◽  
Rana Pipiens ◽  
Silver Film ◽  
Immunofluorescence Microscopy ◽  
Organelle Transport ◽  
Linear Element ◽  
Whole Mount ◽  
Carbon Coated ◽  
Linear Elements ◽  
Dic Microscopy

In a previous study, Allen video-enhanced constrast/differential interference constrast (AVEC-DIC) microscopy was used in conjunction with immunofluorescence microscopy to demonstrate that organelles and vesicle move in either direction along linear elements composed of microtubules. However, this study was limited in that the number of microtubules making up a linear element could not be determined. To overcome this limitation, we have used AVEC-DIC microscopy in conjunction with whole mount electron microscopy.Keratocytes from Rana pipiens were grown on glass coverslips as described elsewhere. Gold London Finder grids were Formvar- and carbon coated, and sterilized by exposure to ultraviolet light. It is important to select a Formvar film that gives a grey reflection when it is floated on water. A silver film is too thick and will detract from the image in the light microscope.

Strongly coupled nonneutral plasmas : Equilibrium and relaxation in two-component plasmas in Penning-Malmberg trap

2000 ◽  
Vol 10 (PR5) ◽  
pp. Pr5-271-Pr5-274
Author(s):  
H. Totsuji ◽  
K. Tsuruta ◽  
C. Totsuji ◽  
K. Nakano ◽  
T. Kishimoto ◽  
...  
Keyword(s):  
Strongly Coupled ◽  
Nonneutral Plasmas ◽  
Two Component
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