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MICROPARTICLE
CHARACTERIZATION USING
DIGITAL HOLOGRAPHY
By
Pranit P. Malgaonkar
Guided By – Prof. Nitin Satao
1
CONTENT
2
1) Micro particle Characterization &
methods of particle characterization
2)Introduction to digital holography
3)Holography and hologram
4)Digital in line holographic microscopy
5)Digital hologram processing for particle
measurement
6)Advantage
7)Conclusion
8)References
Micro particle Characterization & methods of particle characterization
3
particle size, particle shape, and surface area analysis of any particle
larger than 1 micron, but smaller than 1 mm should be called a micro
particle Characterization
4
INTRODUCTION TO DIGITAL HOLOGRAPHY
Digital holography :- Digital holography is an effective 3D technique
with the potential to be used for measurements of the position , size
distribution , and speed of particles or other micro objects
suspended in fluid
Digital holography provides 3D volume information from a single
hologram acquisition. The actual location of particle can be
determined subsequently by reconstructing the recorded hologram
at different depths.
5
HOLOGRAPHY AND HOLOGRAMS
6
Holography is a photographic technique that records the light
scattered from an object, and then presents it in a way that
appears three-dimensional.
Digital in line holographic microscopy
7
Digital hologram processing for particle measurement
Steps of hologram processing algorithm :-
a) Numerical reconstruction
b) Image segmentation
c) Localization of a particle
d) Particle size and shape measurements
8
9
ADVANTAGE
In comparison with classical film based holography the use of digital
holography is more attractive due to the ease of set up and recording process
using digital camera
It is possible to experiment a phenomena during a long time without
modification of the setup and to compensate
numerically for specimen movements afterwards
10
CONCLUSIONS
A particle size measurement methodology based on digital holographic
microscopy was presented. The size and shape measurements obtained
using digital holography microscopy show good agreement with the given
size and shape measured using independent techniques the results
obtained in this study extend the potential of digital holography for
applications in particle characterization
11
REFERENCES
MICROPARTICLE CHARACTERIZATION USING DIGITAL HOLOGRAPHIC
MICROSCOPY
Emmanouil Darakis,Taslima khanam , Arvind rajendran, Vinay kariwala, Thomas j.
naughton , Anand k. asundi
Chemical Engineering science 65(2010)1037-1044
www.elsevier.com/locate/ces
12
THANK YOU
13

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Microparticle characterization using digital holography

  • 1. MICROPARTICLE CHARACTERIZATION USING DIGITAL HOLOGRAPHY By Pranit P. Malgaonkar Guided By – Prof. Nitin Satao 1
  • 2. CONTENT 2 1) Micro particle Characterization & methods of particle characterization 2)Introduction to digital holography 3)Holography and hologram 4)Digital in line holographic microscopy 5)Digital hologram processing for particle measurement 6)Advantage 7)Conclusion 8)References
  • 3. Micro particle Characterization & methods of particle characterization 3 particle size, particle shape, and surface area analysis of any particle larger than 1 micron, but smaller than 1 mm should be called a micro particle Characterization
  • 4. 4
  • 5. INTRODUCTION TO DIGITAL HOLOGRAPHY Digital holography :- Digital holography is an effective 3D technique with the potential to be used for measurements of the position , size distribution , and speed of particles or other micro objects suspended in fluid Digital holography provides 3D volume information from a single hologram acquisition. The actual location of particle can be determined subsequently by reconstructing the recorded hologram at different depths. 5
  • 6. HOLOGRAPHY AND HOLOGRAMS 6 Holography is a photographic technique that records the light scattered from an object, and then presents it in a way that appears three-dimensional.
  • 7. Digital in line holographic microscopy 7
  • 8. Digital hologram processing for particle measurement Steps of hologram processing algorithm :- a) Numerical reconstruction b) Image segmentation c) Localization of a particle d) Particle size and shape measurements 8
  • 9. 9
  • 10. ADVANTAGE In comparison with classical film based holography the use of digital holography is more attractive due to the ease of set up and recording process using digital camera It is possible to experiment a phenomena during a long time without modification of the setup and to compensate numerically for specimen movements afterwards 10
  • 11. CONCLUSIONS A particle size measurement methodology based on digital holographic microscopy was presented. The size and shape measurements obtained using digital holography microscopy show good agreement with the given size and shape measured using independent techniques the results obtained in this study extend the potential of digital holography for applications in particle characterization 11
  • 12. REFERENCES MICROPARTICLE CHARACTERIZATION USING DIGITAL HOLOGRAPHIC MICROSCOPY Emmanouil Darakis,Taslima khanam , Arvind rajendran, Vinay kariwala, Thomas j. naughton , Anand k. asundi Chemical Engineering science 65(2010)1037-1044 www.elsevier.com/locate/ces 12