Antireflective structures on highly flexible and large area elastomer membrane for tunable liquid-filled endoscopic lens

Nanoscale ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 856-861 ◽  
Author(s):  
Sang-In Bae ◽  
Youngseop Lee ◽  
Yeong-Hyeon Seo ◽  
Ki-Hun Jeong
Keyword(s):  
Light Transmittance ◽  
Visible Range ◽  
Large Area ◽  
Elastomeric Membrane ◽  
Endoscopic Application

A highly flexible elastomeric membrane with antireflective structures, which enhances light transmittance over the visible range, is successfully integrated into tunable deformable lens for endoscopic application.

Probabilistic Model of the Reflectivity of Construction Materials of the Agroindustrial Complex

2021 ◽  
Vol 3 (44) ◽  
pp. 111-115
Author(s):  
Tat’yana R. Gallyamova ◽  
Keyword(s):  
Mathematical Model ◽  
Energy Consumption ◽  
Reflection Coefficient ◽  
Probabilistic Method ◽  
Construction Materials ◽  
Research Purpose ◽  
Visible Range ◽  
Industrial Complex ◽  
Large Area ◽  
Wide Range

When developing modern lighting technologies for objects of the agro-industrial complex, the problem arises of assessing the contribution of reflected light to the normalized illumination. The reflective properties of the surfaces of materials are characterized by a reflection coefficient ρ, which reaches a value of 0.7. This allows us to consider the reflective surfaces as an additional light source and the possibility of reducing energy consumption costs. (Research purpose) The research purpose is in developing a mathematical model that allows us to estimate the spectral reflection coefficient ρ(λ) of materials of construction technologies of the agro-industrial complex in the ultraviolet and visible spectral regions. (Materials and methods) That the disadvantage of various models is the lack of an analytical method for calculating the reflection coefficient in a wide range of wavelengths. We used a probabilistic method to overcome this disadvantage. (Results and discussion) The developed mathematical model makes it possible to estimate the reflection coefficient of the rough surface of materials in a wide range of the spectrum. For concrete, the area of agreement between theory and experiment is in the wavelength range from 250 to 1000 nm. The saturation mode predicted by the theory (the independence of the reflection coefficient from the wavelength) at a reflection coefficient of 0.4 is consistent with the experimental values in the visible range of the spectrum for construction materials of the agro-industrial complex, in particular, gray textured concrete, gray facade paint, light wood, gray silicate brick, new plaster without whitewash. (Conclusions) In the case of normal light incidence, the developed mathematical model allows us to theoretically estimate the reflection coefficient of the rough surfaces of construction technologies of the agro-industrial complex. The proposed model can be used in the development and design of a system of technological lighting of large-area premises (for example, when keeping birds on the floor), as well as for developing recommendations for reducing the energy consumption of existing lighting systems.

scholarly journals Problems and Prospects of Nanometer Transparent Infrared Thermal Insulation Glass

2018 ◽  
Vol 53 ◽  
pp. 01013
Author(s):  
Nan Zhang ◽  
Mengyuan Xu ◽  
Ning Li
Keyword(s):  
Energy Conservation ◽  
Visible Light ◽  
Energy Saving ◽  
Building Energy ◽  
Light Transmittance ◽  
Large Area ◽  
Existing Building ◽  
Economic Application ◽  
Performance Indexes ◽  
Building Energy Saving

The existing building energy-saving reconstruction has a large area in our country. If the performance indexes such as the shading coefficient, visible light transmittance and hardness of the coating heat-insulating glass are in the condition of reaching the specification, and it can meet the needs of energy conservation and reform in building, it is a suitable technology for economic application.

scholarly journals Rapid and Scalable Wire-bar Strategy for Coating of TiO2 Thin-films: Effect of Post-Annealing Temperatures on Structures and Catalytic Dye-Degradation

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1683 ◽  
Author(s):  
P. Divya ◽  
S. Arulkumar ◽  
S. Parthiban ◽  
Anandarup Goswami ◽  
Tansir Ahamad ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Dye Degradation ◽  
Window Glass ◽  
Visible Range ◽  
Large Area ◽  
Tio2 Thin Films ◽  
Water Contact ◽  
Annealing Temperatures ◽  
Post Annealing

Titanium dioxide (TiO2) thin films were rapidly coated on Corning glass substrates from the precursor solution using the wire-bar technique at the room temperature and then post-annealed at 400, 500 and 600 °C for 1 h under atmospheric conditions. The structural, morphological, optical, wettability and photocatalytic properties of the films were studied. X-ray diffraction analysis confirmed the formation of an anatase TiO2 structure irrespective of the post-annealing temperatures. The optical transparency of the films in the visible range was measured to be > 70%. A water contact angle (WCA) of ~0° was observed for TiO2 thin-film, post-annealed at 400 °C and 500 °C. However, WCA of 40.3° was observed for post-annealed at 600 °C. The photocatalytic dye-degradation using post-annealed thin-film was investigated indicating a steady improvement in the dye-degradation percentage (from 24.3 to 29.4%) with the increase of post-annealing temperature. The demonstrated TiO2 thin-films deposited by wire-bar coating technique showed promises for the manufacturing of large-area cost-effective self-cleaning window glass.

Large area double p–i–n heterostructure for signal multiplexing and demultiplexing in the visible range

2009 ◽  
Vol 517 (23) ◽  
pp. 6435-6439 ◽  
Author(s):  
M. Vieira ◽  
P. Louro ◽  
M. Fernandes ◽  
M.A. Vieira ◽  
A. Fantoni ◽  
...  
Keyword(s):  
Visible Range ◽  
Large Area

scholarly journals Large Area Nanohole Arrays for Sensing Fabricated by Interference Lithography

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 2182 ◽  
Author(s):  
Chiara Valsecchi ◽  
Luis Enrique Gomez Armas ◽  
Jacson Weber de Menezes
Keyword(s):  
Soft Lithography ◽  
Focused Ion Beam ◽  
Near Infrared ◽  
Ion Beam ◽  
Production Method ◽  
Interference Lithography ◽  
Visible Range ◽  
Large Area ◽  
Nanohole Array ◽  
Nanohole Arrays

Several fabrication techniques are recently used to produce a nanopattern for sensing, as focused ion beam milling (FIB), e-beam lithography (EBL), nanoimprinting, and soft lithography. Here, interference lithography is explored for the fabrication of large area nanohole arrays in metal films as an efficient, flexible, and scalable production method. The transmission spectra in air of the 1 cm2 substrate were evaluated to study the substrate behavior when hole-size, periodicity, and film thickness are varied, in order to elucidate the best sample for the most effective sensing performance. The efficiency of the nanohole array was tested for bulk sensing and compared with other platforms found in the literature. The sensitivity of ~1000 nm/RIU, achieved with an array periodicity in the visible range, exceeds near infrared (NIR) performances previously reported, and demonstrates that interference lithography is one of the best alternative to other expensive and time-consuming nanofabrication methods.

scholarly journals Controllable Vapor Growth of Large-Area Aligned CdSxSe1−x Nanowires for Visible Range Integratable Photodetectors

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Muhammad Shoaib ◽  
Xiaoxia Wang ◽  
Xuehong Zhang ◽  
Qinglin Zhang ◽  
Anlian Pan
Keyword(s):  
Visible Range ◽  
Large Area ◽  
Vapor Growth

Characterization of a-Se(As:Cl) Film for Phosphor Coupled X-Ray Light Modulators

2007 ◽  
Vol 124-126 ◽  
pp. 1677-1680
Author(s):  
Sang Sik Kang ◽  
Ji Koon Park ◽  
Byung Youl Cha ◽  
Jung Woog Shin ◽  
So Yeong Kim ◽  
...  
Keyword(s):  
Amorphous Selenium ◽  
Experimental Results ◽  
Visible Range ◽  
Electrical Measurements ◽  
Large Area ◽  
Light Modulator ◽  
X Ray ◽  
Light Modulators ◽  
Imaging Detector ◽  
Low X

Amorphous selenium (a-Se) film has the potential to fulfill the requirements of a novel x-ray image detector because of its good photo-to-dark impedance ratio, large area coverage, and low temperature deposition. In this work were studied the structural, optical and electrical properties of thermally- evaporated a-Se film for the phosphor-light modulator (PLM). From the x-ray diffraction and electron microscopy experimental results, the deposited film had an amorphous phase without any re-crystallization or defects. Also, the light absorption in widely visible range of 400 ~ 630 nm was over 95 %. From the electrical measurements, the low dark current density of 2.8 nA/cm2 was obtained at 10 V/㎛. The x-ray sensitivity of the 270㎛-Gd2O3:Eu phosphor coupled 20㎛-Se film was 7.31 nC/cm2-mR. From such experimental results, the novel x-ray detector which incorporates phosphor coupled x-ray light modulator, makes an operation at low x-ray exposure possible, therefore, the applications as a medical imaging detector are shown below.

scholarly journals Fabrication of Screen Printing-Based AgNWs Flexible Transparent Conductive Film with High Stability

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1027
Author(s):  
Jianjun Yang ◽  
Wei Zeng ◽  
Yaxin Li ◽  
Zichuan Yi ◽  
Guofu Zhou
Keyword(s):  
Screen Printing ◽  
High Stability ◽  
Large Scale ◽  
Silver Nanowires ◽  
Low Cost ◽  
Optical Microscope ◽  
Light Transmittance ◽  
Large Area ◽  
Transparent Substrate ◽  
Conductive Thin Films

Flexible transparent conductive thin films (TCFs) prepared from Silver nanowires (AgNWs) have attractive features of low cost, flexibility, and solution-processed, but the usual manufacturing methods could still be hard to be scaled up. In addition, large-scale/large-area fabrication process with industrialized potential is strongly needed. In this paper, the flexible TCFs with high stability are obtained via using screen printing method to print the AgNWs inks on a flexible and transparent substrate. The micro-structure of the AgNWs patterns is investigated by optical microscope and scanning electron microscope. Furthermore, the sheet resistance, light transmittance, and film thickness of the AgNWs patterns prepared under different conditions are characterized to explore the influence of different factors on its optical and electrical properties.

scholarly journals Flexible Transparent Heat Mirror for Thermal Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2479
Author(s):  
Shimin Li ◽  
Qianqian Xu ◽  
Ziji Zhou ◽  
Wenchao Zhao ◽  
Xiaowen Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Radiation ◽  
Thermal Energy ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Control Sample ◽  
Infrared Region ◽  
Visible Range ◽  
Large Area ◽  
Practical Applications

Transparent heat mirrors have been attracting a great deal of interest in the last few decades due to their broad applications, which range from solar thermal convection to energy-saving. Here, we present a flexible Polyethylene terephthalate/Ag-doped Indium tin oxide/Polydimethylsiloxane (PAIP) thin film that exhibits high transmittance in visible range and low emissivity in the thermal infrared region. Experimental results show that the temperature of the sample can be as high as 108 °C, which is ~23 °C higher than that of a blackbody control sample under the same solar radiation. Without solar radiation, the temperature of the PAIP thin film is ~6 °C higher than that of ordinary fabric. The versatility of the large-area, low-radiation-loss, highly-transparent and flexible hydrophobic PAIP thin film suggest great potential for practical applications in thermal energy harvesting and manipulation.

scholarly journals Development of Tandem Amorphous/Microcrystalline Silicon Thin-Film Large-Area See-Through Color Solar Panels with Reflective Layer and 4-Step Laser Scribing for Building-Integrated Photovoltaic Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Chin-Yi Tsai ◽  
Chin-Yao Tsai
Keyword(s):  
Thin Film ◽  
Light Transmittance ◽  
Solar Panels ◽  
Microcrystalline Silicon ◽  
Large Area ◽  
Silicon Thin Film ◽  
Laser Scribing ◽  
Building Integrated Photovoltaic ◽  
Photovoltaic Applications ◽  
Dark Blue

In this work, tandem amorphous/microcrystalline silicon thin-film large-area see-through color solar modules were successfully designed and developed for building-integrated photovoltaic applications. Novel and key technologies of reflective layers and 4-step laser scribing were researched, developed, and introduced into the production line to produce solar panels with various colors, such as purple, dark blue, light blue, silver, golden, orange, red wine, and coffee. The highest module power is 105 W and the highest visible light transmittance is near 20%.

Sign in / Sign up

Export Citation Format

Share Document