Following phase transitions by depolarized light intensity. The experimental setup

2009 ◽  
Vol 28 (1) ◽  
pp. 36-41 ◽  
Author(s):  
B. Misztal-Faraj ◽  
P. Sajkiewicz ◽  
H. Savytskyy ◽  
O. Bonchyk ◽  
A. Gradys ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Light Intensity ◽  
Experimental Setup ◽  
Depolarized Light Intensity

Erratum to “Following phase transitions by depolarized light intensity. The experimental setup” [Polymer Testing 28 (2009) 36–41]

2009 ◽  
Vol 28 (4) ◽  
pp. 461
Author(s):  
B. Misztal-Faraj ◽  
P. Sajkiewicz ◽  
H. Savytskyy ◽  
O. Bonchyk ◽  
A. Gradys ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Light Intensity ◽  
Experimental Setup ◽  
Depolarized Light Intensity ◽  
Polymer Testing

Phase transformations in polyphosphazenes by the depolarized light intensity method. I. General features and examples

1989 ◽  
Vol 22 (12) ◽  
pp. 4636-4641 ◽  
Author(s):  
T. Masuko ◽  
R. Okuizumi ◽  
K. Yonetake ◽  
James H. Magill
Keyword(s):  
Light Intensity ◽  
Phase Transformations ◽  
Depolarized Light Intensity

scholarly journals An Advanced Sensor for Particles in Gases Using Dynamic Light Scattering in Air as Solvent

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5115
Author(s):  
Dan Chicea ◽  
Cristian Leca ◽  
Sorin Olaru ◽  
Liana Maria Chicea
Keyword(s):  
Particle Size ◽  
Light Scattering ◽  
Light Intensity ◽  
Dynamic Light Scattering ◽  
Scattered Light ◽  
Experimental Setup ◽  
Scattering Experiment ◽  
Processing Procedure ◽  
Average Size ◽  
Data Processing Procedure

Dynamic Light Scattering is a technique currently used to assess the particle size and size distribution by processing the scattered light intensity. Typically, the particles to be investigated are suspended in a liquid solvent. An analysis of the particular conditions required to perform a light scattering experiment on particles in air is presented in detail, together with a simple experimental setup and the data processing procedure. The results reveal that such an experiment is possible and using the setup and the procedure, both simplified to extreme, enables the design of an advanced sensor for particles and fumes that can output the average size of the particles in air.

PHOTON TRANSMISSION TECHNIQUE TO STUDY PHASE TRANSITIONS OF POLY(N-ISOPROPYLACRYLAMIDE) GELS

2004 ◽  
Vol 18 (12) ◽  
pp. 1717-1733 ◽  
Author(s):  
ÖNDER PEKCAN ◽  
SELIM KARA
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Free Radical ◽  
Light Intensity ◽  
Scattered Light ◽  
Study Phase ◽  
Temperature Sensitive ◽  
Transmission Technique ◽  
Almost All ◽  
Large Clusters

Temperature sensitive PNIPA Poly(N-isopropylacrylamide) gels were prepared by free-radical crosslinking copolymerization (FCC) of NIPA in the presence of various N,N'-methylenebisacrylamide (Bis) contents in water. FCC were carried out separately at various onset temperatures, T on (20, 22 and 24°C) for each Bis content gel. The photon transmission technique was used to study the demixing processes of these PNIPA gels at various wavelengths (450, 500, 550, 600, 690 nm). During the phase transition experiments, the temperatures of the gel samples increased from 24°C to 38°C with 0.4°C/min rate. It was observed that transmitted photon intensities I tr decreased dramatically around 34°C for almost all gel samples prepared at various onset temperatures in different Bis contents. The decrease in I tr was attributed to the increase in scattered light intensity I sc during demixing process. The behavior of I sc was modeled using Rayleigh's equation where the inverse power of wavelength λ was measured to interpret the demixing in water–PNIPA gel system. It was observed that large clusters are formed above demixing temperature, T d and it was understood that the PNIPA gel prepared at high T on presents low T d values.

scholarly journals Harnessing Solar Energy for Every Home: Energy Saving Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-3 ◽  
Author(s):  
Jitisha Aggarwal ◽  
M. L. Aggarwal
Keyword(s):  
Solar System ◽  
Solar Energy ◽  
Light Intensity ◽  
Energy Saving ◽  
Energy Crisis ◽  
Experimental Setup ◽  
The Sun ◽  
Next Generation ◽  
User Friendly

Most of the present day resources of energy are limited and irreplaceable. The next generation will face acute energy crisis if alternate resources of energy are not developed concurrently. Increasing cost and import of conventional resources have bad effect on the economy of a country, and the only cheaper solution is “unlimited power” from the sun. The use of solar energy is so far limited in household applications. In fact, if we harness only 0.0034 percent of the solar energy reaching the Earth’s surface, the energy need of the whole world will be met. In the present work, a substitute of 10-watt conventional night lamp has been proposed by a solar night lamp of the same light intensity through an experimental setup. The developed solar system is cheaper, portable, user friendly, and free from maintenance. The paper stresses on the need of replacement of conventional night lamp by solar night lamp in every home for reducing the energy crisis at present.

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