M.Sc. (Nano-Technology) (Semester II)
(CBCS) Examination, 2017
PROPERTIES OF NANOMATERIALS
Day Date: Friday, 21-04-2017 Max. Marks: 70
Time: 10.30 AM to 01.00 PM
N.B. part question 1iscompulsory.
Attempt any four questions from Part II.
Figures to the right indicate full marks.
Answers to the Part- 1 and Part -II are to written in
Same answer booklet only.
PART- I
Q.1 Rewrite the sentence after choosing correct answer from
the given alternatives
07
Fluorescence is the emission of light by a substance that has
light
Absorbed Emit
Desorb Color
As the surface area changes the of nanomaterials
changes
Properties Behavior
Size Color
Luminescence is of light by a substance not resulting
from heat
Volume Emission
Excitation Size dependent
Thermoluminescence is a form of luminescence that is
exhibited by certain___
Intermolecular bonds Absorption
Excitation Size dependent
Magnetism is a class of physical phenomena that are
mediated by
Domain Magnetic field
Spin of electron Temperature
Light emission from any form of matter after the absorption of
photons
Photoluminescence Chemiluminescence
Page 2 of 2
Thermoluminescence Discoloration
Particle size is a notion introduced for comparing of
solid particles
Dimension Intermolecular
Volume Size
Q.1 Definitions 07
Exciton
Quantum dots
Nanoceramics
Magnetic domain
Nanodisc
Dielectric
Fluorescence
PART II
Answer any four of the following:
Explain the size dependent properties surface to volume ratio
behavior of nanomaterial
14
What are quantum dots? Explain the optical properties of
quantum dots
14
Explain the non-leaner optical susceptibility and properties of
nanomaterial
14
What is random anisotropy? Describe magnetic materials 14
Write notes on any two: 14
Optoelectronics
Magnetocrystalline anisotropy
Stimulated Raman scattering
Answer any two. 14
Quantum confinement of supper lattice
Nanocrystalline ceramics
Dielectric constant of nanoscale silicon