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Purushottam Chakraborty

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Purushottam Chakraborty
Born1953
Kolkata
NationalityIndian
Alma materBrahmananda Keshab Chandra College, Presidency College, Kolkata, University of Calcutta
Known forSecondary Ion Mass Spectrometry, Ion Beam Analysis of Materials and Photonics

Purushottam Chakraborty is an Indian physicist who specializes in materials analysis using ion beams and secondary ion mass spectrometry (SIMS).[1][2]

He is a former senior professor of Physics at Saha Institute of Nuclear Physics, Kolkata, India[3] & former adjunct professor of Physics at University of Pretoria, South Africa.[4]

Scientific career

The title of the PhD thesis of Prof Chakraborty was "Design and development of a radio-frequency quadrupole mass spectrometer (QMS) for the study of secondary metal ions emitted from ion-bombarded surfaces". The QMS was initially fabricated by Profs S D Dey, S B Karmohapatro and B M Banerjee at Saha Institute of Nuclear Physics, Kolkata. Prof Chakraborty was awarded the "Premchand Roychand Scholarship" and conferred the Mouat Medal by the University of Calcutta in 1986. He initiated the experimental research on Atomic and Molecular Physics in his SIMS laboratory as a part of his Ph.D. work. Later, he developed a SIMS laboratory at Saha Institute of Nuclear Physics, Kolkata for undertaking research on ‘atomic collisions in solids’, ‘inelastic ion-surface collisions’ and ‘ion-beam analysis of low-dimensional structures and nanomaterials’.

Prof Chakraborty's work on the fabrication of ‘layered Synthetic Microstructures (LSM)’, at the FOM-Institute for Atomic and Molecular Physics – Amsterdam (AMOLF), in collaboration with the Philips Research Laboratories Netherlands, was recognized as a pioneering contribution in the “realization of optical devices for the extreme ultraviolet to soft X-rays”.[5][6]

The methodology of fabricating aspherically-curved mirrors for reflecting soft x-rays at near-normal incidence was employed to construct ‘Soft X-ray Telescopes’ for imaging Solar Corona and Solar Flakes in the X-UV domain of electromagnetic spectrum. The European Space Agency, Netherlands also used this technique for reflecting X-rays with wavelengths of 1.85 and 10 to 17 Angstroms.

Prof. Chakraborty's “Alkali-element based MCsn+ Molecular-ion SIMS” approach has been used for the quantitative analysis of materials without calibration standards, in general and for the composition analysis of surfaces and interfaces of ultrathin films, superlattices and nanostructured materials, in particular. The technique has been recognized as an important contribution in the field of ion-beam analysis of materials.[7]

Prof Chakraborty's work on ‘Ion-beam Synthesis of Metal-Glass Nanocomposites’ has led to the development of novel photonic materials, thereby opening the way for advances in all-optical switching, coupled waveguides and optical computation.[8][9]

Professor Chakraborty visited and delivered invited lectures at various renowned universities and research institutes across the globe such as Imperial College London, UK; Vanderbilt University, USA;[10] Yale University, USA; Asian Institute of Technology, Thailand;[11] Kyoto University, Japan; and CERN (Geneva), Switzerland[12] to name a few.

Prof Chakraborty was the visiting professor of Pontifical Catholic University of Rio de Janeiro, Brazil; Osaka Electro-Communication University, Japan; Universite Laval, Quebec, Canada; Friedrich Schiller University, Jena, Germany; University of Padova, Italy; International Centre for Theoretical Physics (ICTP), Trieste, Italy; FOM - Institute for Atomic and Molecular Physics, The Netherlands to name a few.

Awards and recognition

Keynote speeches

Prof Chakraborty organized and delivered keynote address at various international conferences; to name a few:

  • 16th International Workshop on Inelastic Ion-Surface Collisions (IISC-16) Sep. 17 - 22, 2006 Hernstein, A-2560 Hernstein, Austria[15]
  • 7th Asian International Seminar on Atomic and Molecular Physics, December 4 – 7, IIT-Madras, India[16]
  • International Summit on Current Trends in Mass Spectrometry, July 13 – 15, 2015, New Orleans, USA[17]
  • 8th World Congress on Spectroscopy and Analytical Techniques, September (11 – 12), 2018, Stockholm, Sweden[18]
  • 9th World Congress on Spectroscopy and Analytical Techniques, March (06 – 07), 2019, Paris, France[19]
  • International Webinar on Mass Spectrometry and Separation Techniques, London, March (05 – 06), 2021[20]

Publications

Purushottam Chakraborty has published more than 100 research papers in international and national journals that includes monographs, reviews and book-chapters.

  • Book “Ion Beam Analysis of Surfaces and Interfaces of Condensed Matter Systems” (Edited by Purushottam Chakraborty), Nova Science Publishers, New York, 2002, ISBN 1590335384[1]
  • Purushottam Chakraborty, MCsn+-SIMS: An Innovative Approach for Direct Compositional Analysis of Materials without Standards, Energy Procedia, Volume 41, (2013), p. 80-109
  • M P Bruijn, Prof. Chakraborty, J. Verhoeven, H W van Essen, M. J. van der Wiel, Automatic electron-beam deposition of multilayer soft x-ray coatings with laterally graded d-spacing, Optical Engineering 25, 916 (1986)
  • Purushottam Chakraborty, Layered synthetic microstructures as optical elements for the extreme ultraviolet and soft X-rays, Int. J. Mod. Phys B 5, (1991), p:2133-2228
  • Biswajit Saha, Purushottam Chakraborty, Hubert Gnaser, Manjula Sharma and Milan K Sanyal, Exact compositional analysis of SiGe alloys by matrix effect compensated MCs+-SIMS, Appl Phys A 108, 671 (2012)
  • P. Chakraborty, Metal nanoclusters in glasses as non-linear photonic materials, Journal of Materials Science (Kluwer Academic Publishers) Volume 33, p: 2235-2249 (1998)
  • Binita Ghosh and Purushottam Chakraborty, Optical Nonlinearities of Colloidal Metal Quantum Dot – Glass Composites for Nanophotonics (Book: Nanocomposites and Polymers with Analytical Methods) (Edited by John Cuppoletti, Intech Publishers) (2011)
  • Journal of Physics: Conference Series (IOP Publications, UK), Volume 80 (Edited by Pranawa C Deshmukh, Purushottam Chakraborty and Jim F Williams), (2006)

References

  1. ^ a b "Ion Beam Analysis of Surfaces and Interfaces of Condensed Matter Systems". novapublishers.org.
  2. ^ Saha, Biswajit; Chakraborty, Purushottam (1 January 2013). "MCsn+-SIMS: An Innovative Approach for Direct Compositional Analysis of Materials without Standards". Energy Procedia. 41: 80–109. doi:10.1016/j.egypro.2013.09.009.
  3. ^ "Purushottam Chakraborty | Saha Institute of Nuclear Physics - Academia.edu". saha.academia.edu.
  4. ^ "Staff List". www.up.ac.za.
  5. ^ Bruijn, M. P.; Chakraborty, P.; Essen, H. W. van; Verhoeven, J.; Wiel, M. J. van der (1986). "Automatic Electron-Beam Deposition Of Multilayer Soft X-Ray Coatings With Laterally Graded D-Spacing". Optical Engineering. 25 (8): 258916. Bibcode:1986OptEn..25..916B. doi:10.1117/12.7973930.
  6. ^ Chakraborty, Purushottam (10 August 1991). "Layered synthetic microstructures as optical elements for the extreme ultraviolet and soft x-rays". International Journal of Modern Physics B. 05 (13): 2133–2228. Bibcode:1991IJMPB...5.2133C. doi:10.1142/S0217979291000845.
  7. ^ Saha, Biswajit; Chakraborty, Purushottam; Gnaser, Hubert; Sharma, Manjula; Sanyal, Milan K. (1 September 2012). "Exact compositional analysis of SiGe alloys by matrix effect compensated MCs+-SIMS". Applied Physics A. 108 (3): 671–677. Bibcode:2012ApPhA.108..671S. doi:10.1007/s00339-012-6949-8. S2CID 96601050.
  8. ^ Chakraborty, P. (1 May 1998). "Metal nanoclusters in glasses as non-linear photonic materials". Journal of Materials Science. 33 (9): 2235–2249. Bibcode:1998JMatS..33.2235C. doi:10.1023/A:1004306501659. S2CID 137613490.
  9. ^ "IntechOpen Open Access Publisher - Open Science Open Minds | IntechOpen". www.intechopen.com.
  10. ^ "Condensed Matter and Optics Seminar". as.vanderbilt.edu.
  11. ^ "Special Talk with Prof. Purushottam Chakraborty – INDUSTRIAL SYSTEMS ENGINEERING". ise.ait.ac.th.
  12. ^ "ISOLDE Workshop and Users meeting 2012". Indico.
  13. ^ a b "Purushottam Chakraborty adjudged India's best spectrometrist". Hindustantimes.
  14. ^ "West Bengal Academy of Science" (PDF). Wast.in.
  15. ^ "16th International Workshop on Inelastic Ion-Surface Collisions (IISC-16)" (PDF). iap.tuwien.ac.at.
  16. ^ Deshmukh, Pranawa C.; Chakraborty, Purushottam; Williams, Jim F. (2007). "7th Asian International Seminar on Atomic and Molecular Physics". Journal of Physics: Conference Series. 80: 011001. doi:10.1088/1742-6596/80/1/011001.
  17. ^ "International Summit on Current Trends in Mass Spectrometry". massspectra.com.
  18. ^ "Spectroscopy Conferences | Mass Spectrometry Conferences | Analytical Techniques Conferences | Analytical Chemistry Conferences | Separation Techniques Conferences | Global Events | Euro Spectroscopy 2018 | Spectrometry Conferences in Europe | Spectroscopy Conferences in Europe | USA | Middle East | Asia Pacific | 2018 | 2019". analyticaltechniques.annualcongress.com.
  19. ^ "Meeting new horizons in the field of Spectroscopy & Analytical Chemistry". analyticaltechniques.annualcongress.com.
  20. ^ "International Webinar on Mass Spectrometry and Separation Techniques". Scientific Meditech.
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