Purushottam Chakraborty Explained

Purushottam Chakraborty
Birth Date:1953
Birth Place:Kolkata
Nationality:Indian
Alma Mater:Brahmananda Keshab Chandra College, Presidency College, Kolkata, University of Calcutta
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Known For:Secondary Ion Mass Spectrometry, Ion Beam Analysis of Materials and Photonics
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Purushottam Chakraborty is an Indian physicist who is one of the renowned experts in materials analysis using ion beams and secondary ion mass spectrometry (SIMS).[1]

He is a former senior professor of Physics at Saha Institute of Nuclear Physics, Kolkata, India[2] & former adjunct professor of Physics at University of Pretoria, South Africa.[3]

Scientific career

Prof Chakraborty did his Ph.D. on the "Design and development of a radio-frequency (RF) quadrupole mass spectrometer (QMS) for the study of secondary-ions emitted from ion-bombarded metal 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, India.

Prof Chakraborty upgraded the equipment by appropriately lowering the frequency of the RF voltage so that the QMS could handle the masses above 200 amu and also by converting the system into a full-fledged UHV-based Secondary Ion Mass Spectrometry (SIMS) Setup at Saha Institute of Nuclear Physics, Kolkata. Making use of the indigenous SIMS instrument, he initiated the experimental research on Ion-Matter Interactions, for which he was awarded "Premchand Roychand Scholarship (PRS)" and conferred "Mouat Medal" by the University of Calcutta in 1986. Later, he pursued research on Atomic Collisions in Solids, Inelastic Ion-Surface Collisions and Ion-Beam Modifications & Analysis of Materials. His other research areas include Low-Dimensional Materials and Nanoscale Systems, X-UV Optics, Optoelectronics, Nonlinear Optics, Photonics, Plasmonics, etc.

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".[4] [5]

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.[6] 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.[7] [8]

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;[9] Yale University, USA; Asian Institute of Technology, Thailand;[10] Kyoto University, Japan; and CERN (Geneva), Switzerland[11] 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:

Publications

Purushottam Chakraborty has published more than 120 research papers in international journals that includes monographs, reviews and book-chapters.

Books edited

Notes and References

  1. Saha . Biswajit . Chakraborty . Purushottam . MCsn+-SIMS: An Innovative Approach for Direct Compositional Analysis of Materials without Standards . Energy Procedia . 80–109 . en . 10.1016/j.egypro.2013.09.009 . 1 January 2013. 41 . free .
  2. Web site: Purushottam Chakraborty Saha Institute of Nuclear Physics - Academia.edu . saha.academia.edu.
  3. Web site: Staff List . www.up.ac.za.
  4. Bruijn . M. P. . Chakraborty . P. . Essen . H. W. van . Verhoeven . J. . Wiel . M. J. van der . Automatic Electron-Beam Deposition Of Multilayer Soft X-Ray Coatings With Laterally Graded D-Spacing . Optical Engineering . 258916 . 10.1117/12.7973930 . 1986. 25 . 8 . 1986OptEn..25..916B .
  5. Chakraborty . Purushottam . Layered synthetic microstructures as optical elements for the extreme ultraviolet and soft x-rays . International Journal of Modern Physics B . 2133–2228 . 10.1142/S0217979291000845 . 10 August 1991. 05 . 13 . 1991IJMPB...5.2133C .
  6. Saha . Biswajit . Chakraborty . Purushottam . Gnaser . Hubert . Sharma . Manjula . Sanyal . Milan K. . Exact compositional analysis of SiGe alloys by matrix effect compensated MCs+-SIMS . Applied Physics A . 671–677 . en . 10.1007/s00339-012-6949-8 . 1 September 2012. 108 . 3 . 2012ApPhA.108..671S . 96601050 .
  7. Chakraborty . P. . Metal nanoclusters in glasses as non-linear photonic materials . Journal of Materials Science . 2235–2249 . en . 1 May 1998. 33 . 9 . 10.1023/A:1004306501659 . 1998JMatS..33.2235C . 137613490 .
  8. Web site: IntechOpen Open Access Publisher - Open Science Open Minds IntechOpen . www.intechopen.com . en.
  9. Web site: Condensed Matter and Optics Seminar . as.vanderbilt.edu . en.
  10. Web site: Special Talk with Prof. Purushottam Chakraborty – INDUSTRIAL SYSTEMS ENGINEERING . ise.ait.ac.th.
  11. Web site: ISOLDE Workshop and Users meeting 2012 . Indico.
  12. News: Purushottam Chakraborty adjudged India's best spectrometrist . Hindustantimes.
  13. Web site: West Bengal Academy of Science . Wast.in.
  14. Web site: 16th International Workshop on Inelastic Ion-Surface Collisions (IISC-16) . iap.tuwien.ac.at.
  15. 7th Asian International Seminar on Atomic and Molecular Physics . Journal of Physics: Conference Series . 2007 . en . 10.1088/1742-6596/80/1/011001. Deshmukh . Pranawa C. . Chakraborty . Purushottam . Williams . Jim F. . 80 . 011001 . free .
  16. Web site: International Summit on Current Trends in Mass Spectrometry . massspectra.com . 13 July 2015 . en.
  17. Web site: 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 . en.
  18. Web site: Meeting new horizons in the field of Spectroscopy & Analytical Chemistry . analyticaltechniques.annualcongress.com.
  19. Web site: International Webinar on Mass Spectrometry and Separation Techniques . Scientific Meditech.
  20. Web site: Nanostructures: Fundamentals & Quantitative Analysis . rgu.ac.in.
  21. Web site: Alkali based molecular-ion sims: An innovative chemical approach for the exact composition analysis of quantum structures Nanotechnology Conferences 2022 Nanomaterials Conference 2022 Nanomaterials Conferences Nanoscience Conferences 2022 Nano Event 2022 . worldnanotechnologyconference.com.
  22. Web site: NanoSeries Experts . nanoseriesconference.
  23. Web site: 30th National Conference on Condensed Matter Physics . nitnagaland.ac.in.
  24. Web site: SAIP2023 . SAIP Event Management System (Indico).
  25. Web site: Ghosh . Binita . Chakraborty . Purushottam . Metal Quantum Dot – Glass Composites as Nonlinear Optical Materials for Photonic Applications . Encyclopedia of Materials: Electronics . Elsevier . 139–175 . 1 January 2023.
  26. Web site: Ion Beam Analysis of Surfaces and Interfaces of Condensed Matter Systems . novapublishers.org.
  27. Web site: Encyclopedia of Materials: Electronics . ScienceDirect . en.
  28. Web site: Nanoscale Matter and Principles for Sensing and Labeling Applications . springer.com . en.

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