StudentShare solutions
Triangle menu

Physical properties of transparent optical polymers - Dissertation Example

Nobody downloaded yet

Extract of sample
Physical properties of transparent optical polymers

substituted ethylenic) copolymer (Weber, 2003). Structural units of most of these polymers are given in the figure 5.2. Fig. 5.2: Structural units of common optical polymers (Martienssen and Warlimont, 2006). Because of the variations in structure, the properties such as refractive index, thermal stability, etc. vary among the different polymers (Losch et al., 1992). The properties of certain optical polymers (PC, PMMA, and ADC in comparison to glass are shown in figure 5.3. Fig. 5.3: Comparison of physical properties of glass and optical polymeric plastics – PC, PMMA and ADC (Optical Polymers International, 2010). This chapter describes and compares the physical properties of common optical polymers. The following physical properties will be discussed further: 1. ...
The scattering loss of these materials is low and their refractive indices are controllable (Jones, 1997). This allows their fabrication into waveguide structures. 5.2.1. Comparison of Refractive Index The refractive index of most transparent polymeric materials is around 1.5. As these are carbon based, their refractive indices and dispersion are very different from crystals and glasses (Weber, 2003). Polyetherimide (PEI) has a refractive index higher than most other optical polymers. Other polymers with high refractive indices include polyarylsulfone, polyarylate, PC, and PS. PMMA has a refractive index of 1.491. The refractive indices of some common polymers are shown in table 5.1. The refractive index of ADC is 1.50, which compares well with that of glass. Polymer Refractive index PEI 1.658 Polyarylsulfone 1.651 Polyarylate 1.61 PS 1.590 PC 1.586 SAN 1.579 CR-39 1.504 PMMA 1.491 TPX 1.466 Table 5.1: Refractive indices of common polymeric materials. The refractive index of a polymer is influenced by the polarizability, free volume and the difference between the maximum absorption wavelength and optical wavelength of the material (Ma et al., 2002). The higher the density and the polarizability of the material, the higher will be its refractive index. Various other polymeric materials have been used in optical focusing mechanisms. These include polyimides (PI), fluoropolymers (FP) such as Tedlar® PVF, Tefzel® ETFE, and Teflon® FEP, and hydrocarbon polymers (HCP) like polyvinylbutyral (PVB). Among the fluoropolymers, the lowest index of refraction is that of Teflon FEP, which is completely fluorinated (French et al., 2011). It is observed that as the amount of ...Show more


Chapter 5 Physical Properties of Transparent Optical Polymers 5.1. Introduction Owing to their optical properties, many transparent polymeric materials have found widespread use in a variety of optical applications. Transparent polymeric plastics such as polymethylmethacrylate (PMMA) and polycarbonate (PC) have replaced glass in several applications including optical focusing mechanisms (Optical Polymers International, 2010)…
Author : omohr
Physical properties of transparent optical polymers essay example
Read Text Preview
Save Your Time for More Important Things
Let us write or edit the dissertation on your topic
"Physical properties of transparent optical polymers"
with a personal 20% discount.
Grab the best paper

Check these samples - they also fit your topic

Abbey Properties Limited in Recession
This current recession had its roots in the bursting of the housing bubble in the United States. Long before this recession formally started, the housing bubble started to fall apart and the housing prices started to fall. Due to strong connectedness between the United States and United Kingdom, the effects in form of decreasing prices were visible.
15 pages (3750 words) Dissertation
Study of chemical vapor deposition CVD grown transparent conducting oxides (TCO)
In relation to samples 235 to 242 it was found out that the electrical properties and the optical properties tend to change as the ratio of tin to water and the number of passes changes. The mean transmission levels vary between 33.3% and 50.53% while the mean reflection levels vary between 2.36% and 6.34% with Sample 237 having the highest transmission.
1 pages (250 words) Dissertation
Correlation of the light scattering properties of transparent conducting oxides to PV efficiency
For sample 238, the transmission is directly proportion to the wavelength of the projected light. As the wavelength increases, the percentage transmission increases but a rapid increase in the percentage transmission can be seen by the projection of light from wave length of 455nm to 627nm.
24 pages (6000 words) Dissertation
Modelling of optical parameters for optimum collection of concentrated solar radiation for photovoltaic devices
Innovative ideas have come out to save the earth from destruction of its ozone layer. World population is expected to increase by about 10 billion by year 2050 and if electricity demands are not programmed by now, there will surely be insurmountable problems for the people and the deterioration of the environment will exacerbate.
15 pages (3750 words) Dissertation
Theoretical review in optical materials used in Concentrating Photovoltanic (CPV) Technology
Theoretical Review of Optical Materials used in Concentrating Photovoltaic (CPV) Technology. Solar cells produce electrical current in direct proportion to the amount of solar radiation falling on them. By increasing the intensity of solar radiation, it is possible to significantly increase the efficiency of electricity production by these cells.
21 pages (5250 words) Dissertation
Investigation and previous work on optical and thermal measurements in transparent materials
Therefore, this chapter details previous studies on the optical and thermal analysis of optical materials. The basics of ray tracing, optical features and thermal analysis are described first, followed by a discussion on previous investigations on optical, thermal and physical properties of glasses and polymeric materials such as polymethyl methacrylate (PMMA).
16 pages (4000 words) Dissertation
Zemax EE Software and Programming
This dissertation aims to use Zemax software to understand the light paths through ray tracing for various light shapes and samples with different geometries made from glass, polymeric materials, and Al metal. Optical design parameters are modeled based on the data obtained to achieve optimum collection of solar radiation.
11 pages (2750 words) Dissertation
Talent Development and Capability in Sunny Optical
SO has always prided itself on product quality, innovation and professional service. This was tied to employee satisfaction and independence. The paper shows us the main personable leader and his approvals. It explaines this flaw as a symptom of the leader's love for new challenges.
6 pages (1500 words) Dissertation
Runway properties
The planning process is also to determine the traffic pattern a few miles away from the airport. While approaching the airport during landing, the pilot maintains the appropriate angle by controlling the pitch angle and the glide slope angle (Civil Aviation Authority of New Zealand 2011).
3 pages (750 words) Dissertation
Family Owned Real Estate Properties in London
Family businesses are entities purely owned by members from one family, when two family members, say a wife and a husband create a partnership venture or where siblings team up to start a business venture. The top management of such entities is normally comprised of family members who undertake the daily roles of running business activities.
38 pages (9500 words) Dissertation
Hire a pro to write
a paper under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
Comments (0)
Click to create a comment
Contact Us