scholarly journals Extraction of light trapped due to total internal reflection using porous high refractive index nanoparticle films

Nanoscale ◽  
2014 ◽  
Vol 6 (14) ◽  
pp. 8177-8184 ◽  
Author(s):  
Peng Mao ◽  
Fangfang Sun ◽  
Hanchao Yao ◽  
Jing Chen ◽  
Bo Zhao ◽  
...  
Keyword(s):  
Refractive Index ◽  
Gas Phase ◽  
Total Internal Reflection ◽  
High Refractive Index ◽  
Internal Reflection ◽  
Cluster Beam ◽  
Nanoparticle Films ◽  
Phase Cluster ◽  
Cluster Beam Deposition ◽  
Beam Deposition

Porous TiO2nanoparticle layers are fabricated by gas phase cluster beam deposition at glancing incidence.

scholarly journals Highly bactericidal Ag nanoparticle films obtained by cluster beam deposition

2015 ◽  
Vol 11 (6) ◽  
pp. 1417-1423 ◽  
Author(s):  
Emanuele Cavaliere ◽  
Sebastiano De Cesari ◽  
Giulia Landini ◽  
Eleonora Riccobono ◽  
Lucia Pallecchi ◽  
...  
Keyword(s):  
Cluster Beam ◽  
Ag Nanoparticle ◽  
Nanoparticle Films ◽  
Cluster Beam Deposition ◽  
Beam Deposition

scholarly journals Attenuated Total Reflection at THz Wavelengths: Peculiarities of Total Internal Reflection and Polariscopy

2021 ◽  
Author(s):  
Meguya Ryu ◽  
Soon Hock Ng ◽  
Vijayakumar Anand ◽  
Stefan Lundgaard ◽  
Jingwen Hu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Biological Samples ◽  
Total Internal Reflection ◽  
Refractive Index Change ◽  
High Refractive Index ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Internal Reflection ◽  
Optical Elements ◽  
Frustrated Total Internal Reflection

Capabilities of the Attenuated Total Reflection (ATR) at THz wavelengths for increased sub-surface depth characterisation of (bio-)materials is presented. The penetration depth of a THz evanescent wave in biological samples is dependent on the wavelength and temperature and can reach 0.1-0.5 mm depth due to strong refractive index change ∼0.4 of the ice-water transition; this is quite significant and important when studying biological samples. Technical challenges are discussed when using ATR for uneven, heterogeneous, high refractive index samples with possibility of frustrated total internal reflection (a breakdown of the ATR reflection-mode into transmission-mode). Local field enhancements at the interface are discussed with numerical/analytical examples. Maxwell’s scaling was used to model behaviour of absorber-scatterer inside materials at the interface with ATR prism for realistic complex refractive indices of bio-materials. Modality of ATR with polarisation analysis is proposed and its principle illustrated, opening an invitation for its experimental validation. The sensitivity of the polarised ATR mode to the refractive index between the sample and ATR prism is revealed. Design principles of polarisation active optical elements and spectral filters are outlined. The results and concepts are based on experiments carried out at the THz beamline of the Australian Synchrotron.

scholarly journals Attenuated Total Reflection at THz Wavelengths: Prospective Use of Total Internal Reflection and Polariscopy

2021 ◽  
Vol 11 (16) ◽  
pp. 7632
Author(s):  
Meguya Ryu ◽  
Soon Hock Ng ◽  
Vijayakumar Anand ◽  
Stefan Lundgaard ◽  
Jingwen Hu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Biological Samples ◽  
Total Internal Reflection ◽  
Refractive Index Change ◽  
High Refractive Index ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Internal Reflection ◽  
Experimental Conditions ◽  
Frustrated Total Internal Reflection

Capabilities of the attenuated total reflection (ATR) at THz wavelengths for increased sub-surface depth characterisation of (bio-)materials are presented. The penetration depth of a THz evanescent wave in biological samples is dependent on the wavelength and temperature and can reach 0.1–0.5 mm depth, due to the strong refractive index change ∼0.4 of the ice-water transition; this is quite significant and important when studying biological samples. Technical challenges are discussed when using ATR for uneven, heterogeneous, high refractive index samples with the possibility of frustrated total internal reflection (a breakdown of the ATR reflection mode into transmission mode). Local field enhancements at the interface are discussed with numerical/analytical examples. Maxwell’s scaling is used to model the behaviour of absorber–scatterer inside the materials at the interface with the ATR prism for realistic complex refractive indices of bio-materials. The modality of ATR with a polarisation analysis is proposed, and its principle is illustrated, opening an invitation for its experimental validation. The sensitivity of the polarised ATR mode to the refractive index between the sample and ATR prism is numerically modelled and experimentally verified for background (air) spectra. The design principles of polarisation active optical elements and spectral filters are outlined. The results and proposed concepts are based on experimental conditions at the THz beamline of the Australian Synchrotron.

Stabilization of binder-free vanadium oxide-based oxygen electrodes using Pd clusters for Li–O2 batteries

2020 ◽  
Vol 56 (12) ◽  
pp. 1823-1826 ◽  
Author(s):  
Jiade Li ◽  
Senchuan Huang ◽  
Guangyao Zhang ◽  
Zhi Li ◽  
Shengfu Tong ◽  
...  
Keyword(s):  
Gas Phase ◽  
Carbon Cloth ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Oxygen Electrodes ◽  
Phase Cluster ◽  
Binder Free ◽  
Pd Clusters ◽  
Cluster Beam Deposition ◽  
Beam Deposition

A stable binder-free carbon cloth supporting V2O5-Pd clusters was synthesized through hydrothermal and gas-phase-cluster beam deposition. The as-prepared binder-free electrode showed potential application in hybrid energy storage systems.

scholarly journals A facile synthesis of directly gas-phase ordered high anisotropic Sm Co based non-segregated nanoalloys by cluster beam deposition method

2019 ◽  
Vol 181 ◽  
pp. 108052
Author(s):  
Nadeem Abbas ◽  
Yun Li ◽  
Jian-zhong Ding ◽  
J. Ping Liu ◽  
Hu-bin Luo ◽  
...  
Keyword(s):  
Gas Phase ◽  
Cluster Beam ◽  
Deposition Method ◽  
Facile Synthesis ◽  
Cluster Beam Deposition ◽  
Beam Deposition

Anisotropy antireflection TiO2 nanoparticle films fabricated with directed cluster beam deposition

2012 ◽  
Vol 9 (12) ◽  
pp. 2366-2369 ◽  
Author(s):  
Peng Mao ◽  
Jinhui Chen ◽  
Yang Zhou ◽  
Kaiming Liao ◽  
Bo Zhao ◽  
...  
Keyword(s):  
Tio2 Nanoparticle ◽  
Cluster Beam ◽  
Nanoparticle Films ◽  
Cluster Beam Deposition ◽  
Beam Deposition

Mapping cell-glass contacts of Dictyostelium amoebae by total internal reflection aqueous fluorescence overcomes a basic ambiguity of interference reflection microscopy

1988 ◽  
Vol 89 (1) ◽  
pp. 107-114
Author(s):  
I. Todd ◽  
J.S. Mellor ◽  
D. Gingell
Keyword(s):  
Refractive Index ◽  
Cell Body ◽  
Evanescent Wave ◽  
Total Internal Reflection ◽  
Short Range ◽  
Cell Types ◽  
High Refractive Index ◽  
Internal Reflection ◽  
Entire Cell ◽  
Coated Surface

The widespread ability of eukaryotic cells to produce thin cytoplasmic sheets or lamellae 100–200 nm thick can give rise to uncertainties in the interpretation of interference reflection microscopy (IRM) images when cell-substratum topography is the key interest. If allowed to spread upon a poly-L-lysine-coated surface, Dictyostelium discoideum amoebae typically form ultrathin lamellae of approximately equal to 100 nm thickness by cytoplasmic retraction. Whereas the cell body is grey, the lamellae appear very dark under IRM optics. These dark areas could be misinterpreted as stemming from a closer cell-substratum apposition beneath the lamellae than the cell body. This ambiguity can be avoided if the technique of total internal reflection aqueous fluorescence (TIRAF) is used in conjunction with a high refractive index glass (n = 1.83) as substratum. Contributions to the image generated by thin cytoplasm and also variable cytoplasmic refractive index are thereby minimized due to the extremely short range of the ‘illuminating’ evanescent wave. From our comparative IRM and TIRAF study of the ultrathin lamellae of Dictyostelium amoebae it is concluded that the cell-glass gap is relatively uniform beneath the entire cell. We briefly discuss the sensitivity of several cell types to TIRAF, the generation of ultrathin lamellae and the nature of the cell-glass gap.

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