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K. V. Rao Scientific Society Award for Student
Mr. Choudhury Abinash Bhuyan received 'Best Researcher Award' (2023)
Senior Member Insights: Sandip Dhara
https://www.optica-opn.org/home/career/2023/july/senior_member_insights_sandip_dhara/
Studying Light Matter Interaction : Micro Raman Spectrometer Coupled with Surface Probe Microscopy
Raman Spectrometer
Micro-Raman Spectrometer (Renishaw inVia)
Excitations 325, 488, 514.5 and 785 nm
Spectral resolution : 0.4 cm-1
Detection Limit 200-1700 nm Raman Imaging for 100 nm resolution (Point Source : Slow Scan) and 600 nm resolution (Line Source : Fast Scan)
Temperature 80-600 K on Raman Stage (LN2 Cooled)
Surface Probe Microscopy (SPM)
Four Probe with Independent Tuning Fork Feed Back ( MV4000, Nanonics, Israel)
One probe with Beam Bounce Feed Back
Max Scanning Range 150x150x150 micrometer
Tip Enhance Raman Spectroscopy (TERS)
Near-Field Scanning Optical Microscopy (NSOM) with Single Photon Detector
Conductance Mapping, Kelvin Probe Microscopy, Magnetic Force Microscopy
Thermal Scanning
Nano-delivery (Gas, Liquid)
1E-7 mbar (ion pump and Turbo pump)
Temperature -25-300 oC on SPM Stage (Thermoelectric Cooled)
International Conference on Light Matter Interaction (ICLMIN – 2021) was organized by Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam during May 19-21, 2021 online mode. [https://sites.google.com/view/iclmin2021/home]
Media Coverage
https://pib.gov.in/PressReleasePage.aspx?PRID=1721373 (Please use google translator)
https://kalaipoonga.net/business/international-conference-on-light-matter-interaction-iclmin-2021/
Nano-spectroscopic and nanoscopic imaging of single GaN nanowires in the sub-diffraction limit [J. Appl. Phys. 127 (2020) 173103]
Role of the surface density of states in understanding size-dependent surface band bending in GaN nanowires [Appl. Surf. Sci. 510 (2020) 145502]
Phase transition in VO2 with the novel observation of low-frequency collective spin excitation [Sci. Rep. 10 (2020) 1977]
Polarized tip-enhanced Raman spectroscopy in understanding metal to insulator and structural phase transition in VO2 [J. Phys. Chem. C 123 (2019) 11189]
Size Dependent Localized Phonon Population in Semiconducting Si Nanowires [Nano Letter 18 (2018) 7181]
Surface plasmon polaritons in 2D electron gas of surface electron accumulation in InN nanostructures [Nanotechnology 29 (2018) 275707]
Localized Charge Transfer Process in Methane Sensing in single O-rich GaN Nanowires using Scanning Kelvin Probe Microscopy (SKPM) [J. Phys. chem. C 119 (2015) 21251]
Optically Confined Polarized Resonance Raman Spectroscopy for Crystallographic Analysis of Single AlGaN NWs [Appl. Phys. Lett. 106 (2015) 173017; Cryst. Growth & Des. 15 (2015) 1311]
TERS Study in QDs and Single GaN Nanowire @NSS, SND, MSG
III-V Nitride Nanowire Research @ NSS, SND, MSG
Nanosensors @ NSS, SND. MSG
Single Nanostructure Raman Spectroscopic Imaging @ NSS, SND. MSG
Name : Sandip Kumar Dhara, FRSC, FInstP, SMOptica
Ph. D. (1994, National Physical Laboratory, New Delhi ‑ 12, India,
under the affiliation of Birla Institute of Technology and Science, Pilani, Rajasthan, India)
M. S. ( Physical Science 1992, Birla Institute of Technology and Science, Pilani, Rajasthan, India
Present Status : Outstanding Scientist, Head, Surface & Sensors Studies Division, IGCAR; Sr. Professor, A CI of HBNI, Mumbai
Address for Correspondence : Surface & Sensors Studies Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam- 603102, Tamil Nadu, INDIA
Email : dhara@igcar.gov.in; s_dhara2001@yahoo.com
Ph : 91-44-27480347, 27480500-22513, 22659 (Off), 2954 4535 (Res) Official Website http://www.researcherid.com/rid/J-5852-2015 ; http://orcid.org/0000-0001-9728-9952
Scopus ID : 57205352014
https://scholar.google.co.in/citations?user=-aPOWNwAAAAJ&hl=en&oi=ao
Positions Held
Director, Materials Science Group, IGCAR (Feb 9, 2024 - Contd)
Head, Surface & Sensors Studies Division (Jun 2017 - Contd.)
Senior Professor (Feb 1, 2024 - Contd.): A CI of Homi Bhabha National Institute, Mumbai, India HBNI Website (Personal page)
Outstanding Scientist (Dec 18, 2023 - Contd.): Material Science Group, Kalpakkam, Tamil Nadu-603102, India
Professor (Dec 5, 2016 - Feb 1, 2024): A CI of Homi Bhabha National Institute, Mumbai, India HBNI Website (Personal page)
Scientific Officer-H (Aug 18, 2016 – Dec 18, 2023): Material Science Group, Kalpakkam, Tamil Nadu-603102, India
Head, Nanomaterials Characterization and Sensors Section (Mar 2017 - May 2017)
Associate Professor (Sept 19, 2013 - Dec 5, 2016): A CI of Homi Bhabha National Institute, Mumbai, India HBNI Website (Personal page)
Head, Nanomaterials and Sensors Section (May 2012 - Mar 2017)
Program Leader, Nanomaterials and Surface Science Section (Jun 2009- Apr 2012)
Scientific Officer-G (Jul 2011 – Aug 17, 2016 ) : Material Science Group, Kalpakkam, Tamil Nadu-603102, India
Assistant Professor (Nov 18, 2009 - Sept 19, 2013): A CI of Homi Bhabha National Institute, Mumbai, India HBNI Website
Research Associate Professor (Nov 2007 – Oct 2008): National Cheng Kung University, Tainan City 7001, Taiwan
Visiting Scholar (April 2007 - June 2007) : Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei-106, Taiwan
Scientific Officer- F (August 2006 - June 2011) Materials Science Group, IGCAR, Kalpakkam,, Tamil Nadu -603 102, India
Visiting Scientist (September 2001- February 2003) : Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei-106, Taiwan
Scientific Officer- E (February 2001 – July 2006 ) Materials Science Division, IGCAR, Kalpakkam,, Tamil Nadu - 603 102, India
Scientific Officer- D (1996 - January 2001) Materials Science Division, IGCAR, Kalpakkam, Tamil Nadu -603 102, India
Research Associate (1994-1995) : National Physical Laboratory, New Delhi.