Optical Methods for Studying the Drying Dynamics of Fe2O3 Nanocolloid Droplets Depending on Variation of Substrate Temperature

2015 ◽  
Vol 789-790 ◽  
pp. 33-37
Author(s):  
Alexander Dmitriev ◽  
Petr Makarov
Keyword(s):  
Light Intensity ◽  
Lower Layer ◽  
Transmitted Light ◽  
Optical Methods ◽  
Light Transmittance ◽  
Quality Level ◽  
Transparent Substrate ◽  
Single Temperature ◽  
Water Drops ◽  
Shaped Pattern

This work is devoted to investigation of the way light transmittance of drying drop of Fe2O3 nanocolloid deposited on flat surface changes as liquid evaporates. According to results of transmitted light intensity measuring it is assumed that drying process can be divided into separate stages each being characterized by particular quality level of ability to transmit light because of different behavior and, thus, density of suspended nanoparticles inside the droplet. The last stage ends by forming of a ring-shaped pattern (known as “coffee ring”). Temperature of the surface was being changed by applying a varying potential difference to lower layer of transparent substrate made of ITO. Time dependences of integral transmitted light intensity for every single temperature are represented in graphs. They are compared with dependences for water drops of the same volume.

scholarly journals ANALISIS HUBUNGAN INDEKS BIAS DAN INTENSITAS CAHAYA PADA BERBAGAI FLUIDA

2021 ◽  
Vol 10 (4) ◽  
pp. 150
Author(s):  
Muhammad Akbar Mukhlis ◽  
Albertus Djoko Lesmono ◽  
Lailatul Nuraini
Keyword(s):  
Refractive Index ◽  
Light Intensity ◽  
Experimental Research ◽  
Measurement Data ◽  
Transmitted Light ◽  
Intensity Decrease ◽  
Key Word ◽  
The Relationship

This research aimed to examine the relationship between refractive index and light intensity in various fluids.  This type of this research was experimental research.  The measurement data obtained the refractive index values of various fluids, namely the refractive index of spirit, watered, alcohol, oil, and oil respectively 1. 3066 ± 0. 0053, 1. 319 ± 0. 0056, 1. 3422 ± 0. 0061, 1. 438 ± 0. 0054, 1. 576 ± 0. 0068.  The data from the measurement of light intensity in various fluids obtained the valued of the intensity of light that passed through spirit, watered, alcohol, oil, and oil, respectively, namely 1220. 8 ± 3. 72 lux, 1219 ± 3. 9 lux, 1216. 2 ± 3, 77 lux, 1202. 6 ± 3. 88 lux, and 1180. 2 ± 4. 07 lux.  The results of this research obtained a valued of r = 1 which indicates that the relationship between the refractive index and light intensity was very strong.  The conclusion in this studied was that there was a relationship between refractive index and light intensity.  This relationship could been seen in the refractive index, the greater the valued in the fluid would made the transmitted light intensity decrease or inversely proportional. Key word: fluid, light intensity, refractive index

SPECTRAL TRANSMISSION AND SCATTERING CHARACTERISTICS OF HUMAN SKIN

2021 ◽  
Author(s):  
Y. Akizuki ◽  
M. Osumi
Keyword(s):  
Light Intensity ◽  
Light Source ◽  
Human Skin ◽  
Spectral Reflectance ◽  
Layer Structure ◽  
Transmitted Light ◽  
Skin Sample ◽  
Unit Distance ◽  
Measurement And Analysis ◽  
Attenuation Ratio

It is necessary for making the real appearance of human skin sample to deal with not only the spectral reflectance characteristics but also the multi-layer structure and translucency. This paper reported the measurement and analysis of the spectral transmitted and scattering light characteristics. For five subjects, the maximum of transmitted light intensity was resulted at 700 nm near the light source, and decreased with decreasing wavelength. Longer the wavelength, longer the distance which the transmitted light intensity was downing to zero. we defined the average attenuation ratio per unit transmitted light intensity which had the calculation range from 3.5 mm from the light source to the distance that the variation ratio of the transmitted light intensity per unit distance was converged to zero. All subjects’ results showed the peak of the average attenuation ratio at 700 nm and the value were almost 0.5. And they decreased with decreasing wavelength.

Automation of a Filmscanner for Evaluation of Guinier Films and Applications to Determination of Diffraction Data of Pb2Sr2Ho0.625Ca0.375Cu3O8 and Measurement of Thermal Expansion of GeO2

1991 ◽  
Vol 6 (2) ◽  
pp. 82-84 ◽  
Author(s):  
Jens-Erik Jørgensen
Keyword(s):  
Thermal Expansion ◽  
High Temperature ◽  
Light Intensity ◽  
Transmitted Light ◽  
Stepper Motor ◽  
Lattice Constants ◽  
Film Scanner ◽  
Flat Film ◽  
High Temperature Study

AbstractA previously manually operated film comparator used to evaluate Guinier films has been automated as a film scanner of the flat film type. The film movement is controlled by a stepper motor and the intensity of the transmitted light is recorded as a function of position on the film. A personal computer controls the stepper motor and records the measurements of the transmitted light intensity. The data quality is judged from refinements of lattice constants for α-SiO2 and ZrO2. The powder pattern for Pb2Sr2Ho0.625Ca0.375Cu3O8 and a high temperature study of the thermal expansion of GeO2 are presented.

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 Analysis and optimization of rubidium spectrum lamp to eliminate frequency fluctuations of rubidium atomic frequency standard

2020 ◽  
Vol 316 ◽  
pp. 02003
Author(s):  
Jiqing Lian ◽  
Jinhai Zhang ◽  
Fucheng Shi ◽  
Jun Zhang ◽  
Lixun Wei ◽  
...  
Keyword(s):  
Light Intensity ◽  
Frequency Standard ◽  
Intensity Analysis ◽  
Resonance Signal ◽  
Output Frequency ◽  
Single Temperature ◽  
Temperature Controlled ◽  
Frequency Fluctuations ◽  
Atomic Frequency

Rubidium atomic frequency standard (RAFS) is the most widely used frequency standard in space. The light used to pump the atoms and detect the resonance signal is emitted by rubidium spectrum lamp, so the light intensity of rubidium spectrum lamp directly determines the performance of RAFS. This paper discussed on-board RAFS’ output frequency fluctuations caused by rubidium spectrum lamp. The reason of frequency fluctuations from rubidium lamps was described. To obtain stable lamp light intensity, analysis and optimization of the lamp was developed. Relevant experiments were carried out to verify the optimization. The study content of this paper is beneficial to improve the performance of a single temperature controlled space RAFS physics package.

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