Optical property of a material is defined as
its interaction with electro-magnetic radiation in the visible
. Electromagnetic spectrum of radiation spans the wide range from γ-rays with wavelength as 10-12 m, through x-rays, ultraviolet, visible, infrared, and finally radio waves with wavelengths as along as 105 m.
What are optical properties of engineering materials?
Optical Properties of General Engineering Material:
Optical property
deals with the response of a material against exposure to electromagnetic radiations
, especially to visible light. When light falls on a material, several processes such as reflection, refraction, absorption, scattering etc.
What are the optical properties of metals?
In a quantitative way, the optical properties of metals are given in terms of two constants:
the index of refraction and the absorption coefficient
. In defining the index of refraction and absorption coefficient of a metal, it is specified that the amplitude is constant along a wave front.
What is the importance of optical properties of materials?
Optical properties characterize
the response of materials to incident electromagnetic radiation
. For each material, the incident radiation is partially transmitted, partially reflected and partially absorbed.
What are the three optical properties of materials?
- Refractive index.
- Dispersion.
- Transmittance and Transmission coefficient.
- Absorption.
- Scattering.
- Turbidity.
- Reflectance and Reflectivity (reflection coefficient)
- Albedo.
How do you classify optical materials?
Optical materials
Materials are classified on
the basis of their interaction with visible light into three categories
. Materials that are capable of transmitting light with relatively little absorption and reflection are called transparent materials i.e. we can see through them.
What are the physical properties?
A physical property is
a characteristic of matter that is not associated with a change in its chemical composition
. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.
What are optical materials and its types?
Various kinds of optical material are used for a large number of applications, including
transparent glasses and ceramics with specific transmission, reflection, and absorption properties for shielding applications
; impurity-doped dielectric crystals, ceramics, and glasses as well as semiconductors for solid state …
What is meant by optical materials?
Optical materials are
substances used to manipulate the flow of light
. This can include reflecting, absorbing, focusing or splitting an optical beam. The efficiency of a specific material at each task is strongly wavelength dependent, thus a full understanding of the interaction between light and matter is vital.
What are mechanical properties?
Mechanical properties are
physical properties that a material exhibits upon the application of forces
. Examples of mechanical properties are the modulus of elasticity, tensile strength, elongation, hardness and fatigue limit.
What are optical properties of nanoparticles?
Semiconductor and metallic nanomaterials and nanocomposites possess
interesting linear absorption, photoluminescence emission, and nonlinear optical properties
. Nanomaterials having small particle sizes exhibit enhanced optical emission as well as nonlinear optical properties due to the quantum confinement effect.
Which metal reflects light the best?
A
polished silver
surface, for example, reflects about 93 percent of the incident visible light, which is very good as metals go.
What is meant by optical property?
Any of several effects of a substance upon light
. Refractive index, double refraction, (and its strength, birefringence), dispersion, pleochroism, and color are gemmologically the most important optical properties.
What is the physical properties of a material?
Physical properties are
things that are measurable
. Those are things like density, melting point, conductivity, coefficient of expansion, etc. Mechanical properties are how the metal performs when different forces are applied to them. That includes things like strength, ductility, wear resistance, etc.
What is meant by refractive index?
Refractive Index (Index of Refraction) is
a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density
. The refractive index variable is most commonly symbolized by the letter n or n’ in descriptive text and mathematical equations.
What are the mechanical properties of material?
- Strength.
- Elasticity.
- Plasticity.
- Hardness.
- Toughness.
- Brittleness.
- Stiffness.
- Ductility.
