Dr. Somsubhra Saha

Engaging in collaborative Post Doctoral research work at Jadavpur University after obtaining the Ph.D. (Science) degree. Research Interest: Surface Enhanced Raman Spectroscopy (SERS) and Surface Enhanced Resonance Raman Spectroscopy (SERRS), Fabrication of SERS active substrate, Langmuir-Blodgett Film, Three-Dimensional Finite Difference Time Domain (3D-FDTD) Simulation, Statistical Analysis of Rough Surfaces, Multifractal Detrended Fluctuation Analysis (MFDFA)

• Assistant Professor, 05/2016, 07/2017, Dream Institute of Technology, Kolkata, West Bengal, 700104
• Project Fellow, 09/2013, 12/2015, Sammilani Mahavidyalaya, Kolkata, West Bengal, 700075
• Project Assistant, 07/2010, 04/2011, Meghnad Saha Institute of Technology, Kolkata, West Bengal, 700150

• Fabrication of novel and efficient SERS active substrate through self-assembly of silver coated gold nanoparticles in the Langmuir-Blodgett Film of Stearic acid (Student: Chandan Ghorai, M.Sc Physics, Vidyasagar University, India)
• Fabrication of SERS active substrate using Langmuir-Blodgett deposition technique (Student: Namrata Das, M.Sc Physics, Jadavpur University, India)
• Short review on SERS and its applications with Langmuir-Blodgett technique (Student: Nirmal Mondal, M.Sc Physics, Jadavpur University, India)
• Enhancement factors for the surface enhanced Raman bands of 4-Mecaptopyridine adsorbed on single layer Poly Methyl Methacrylate incubated in spherical gold nanocolloids (Student: Azharuddin Mallick, M.Sc Physics, Jadavpur University, India)
• Fabrication of template driven SERS active substrate using Langmuir-Blodgett deposition technique (Student: Senjuti Bhattacharya, B.Sc Physics, Bhawanipur Education Society, India)

• Worked as Laboratory Instructor of B.Tech Physics laboratory at Jadavpur University (6 Months)
• Worked as Assistant Professor in Basic Science and Humanities Department (Physics) in Dream Institute of Technology (Under MAKAUT) (1 Year 2 Months)
• Undergraduate Teaching: Geometrical Optics (B.Sc 1st Year, Sammilani Mahavidyalaya, University of Calcutta) (1 Year)
• Worked as Laboratory Instructor of B.Tech 1st year Physics laboratory at IIT Kharagpur (1 Year)

Langmuir- Blodgett Film trough (Model No.D2007, Apex Instruments), New XploRA Plus V Multiline Confocal Raman Microscope (Model: XploRA+/ML), UV-Vis spectrophotometer (Model No. V630, JASCO), Spectro fluorimeter (Model No. 8200, JASCO), Spin Coater (Spin NSGX1; Apex Instruments), Milli- Q- plus system of Millipore Corporation, USA, Vacuum Deposition Technique, Image J, Gwyddion, Microcal Origin, 3D- FDTD Lumerical Solutions, Inc., Gaussian 09, X-Ray Reflectivity (XRR), Scanning Electron Microscope (SEM), Laser Raman Spectrometer, Atomic Force Microscope (AFM), X-Ray Diffraction (XRD), Transmission Electron Microscope (TEM), X-Ray Photoelectron Spectroscopy (XPS), Energy Dispersive X-Ray Spectroscopy (EDX), Wet Chemical Synthesis of Silver Nanoparticles (Ag NP), Gold Nanoparticles (Au NP) with various sizes, Creighton Colloids, Silver Coated Gold Nanoparticles (Au@Ag NP), Gold Nanorods (Au NR) with various sizes, Silver Coated Gold Nanorods (Au@Ag NR) etc., University of Brescia Engineering Campus, Brescia, Italy (2019), Self-assembly of Au@Ag nanocolloids in the organised Langmuir-Blodgett film of DPPC: Evidence of an efficient SERS sensing platform; Somsubhra Saha, “Some recent trends in research in Physics” held on 21st March 2018 at Department of Physics, Jadavpur University, India. (Poster Presentation), Controlled Aggregation of Gold Nano particles in the Langmuir-Blodgett Film Matrix of PMMA: An Efficient SERS Sensing Platform with Unique Molecular Selectivity; Somsubhra Saha, “7th International Conference on Perspectives in Vibrational Spectroscopy (ICOPVS 2018) held on 25 – 29th November, 2018 at BARC Mumbai, India. (Poster Presentation), Overcoming the SERS uncertainty principle: Fabrication of highly reproducible SERS active substrate with controlled plasmonics; Somsubhra Saha, International Conference on “90 Years of Raman Effect: Current Status and Future Directions” held on 27th February –2nd March 2018 at Indian Institute of Science, Bengaluru, India. (Poster Presentation), Decoding the self-affine properties of SERS active substrates: Experimental vis à vis theoretical investigations; Somsubhra Saha, “VISPEC 2019: Emerging Trends in Vibrational Spectroscopy” held on 11th - 13th September, 2019 at University of Brescia Engineering Campus, Brescia, Italy. (Poster Presentation), Investigation of surface parameters of self-affine surfaces on SERS response; Somsubhra Saha, “National Seminar on Emerging Frontiers in Materials Science” held on 14 -15th February, 2019 at Behala College, Kolkata, India. (Oral Presentation), Self-assembly of silver nanocolloids in the Langmuir- Blodgett Film of stearic acid: Evidence of an efficient SERS sensing platform; Somsubhra Saha, Manash Ghosh, Bipan Dutta, Joydeep Chowdhury. Journal of Raman Spectroscopy, 2016, 47, 168 - 176., Silver coated gold nanocolloids entrapped in organized Langmuir- Blodgett Film of stearic acid: Potential evidence of a new SERS active substrate; Somsubhra Saha, Manash Ghosh, Bipan Dutta, Joydeep Chowdhury. Applied Surface Science, 2016, 362, 364 - 373., Self-assembly of metal nanocolloids entrapped in Langmuir-Blodgett Film templates: Evidence of efficient SERS sensing platforms; Joydeep Chowdhury, Somsubhra Saha, Manash Ghosh. Materials Today: Proceedings, 2018, 5, 10071–10076., Infused self- assembly on Langmuir–Blodgett Film: Fabrication of highly efficient SERS active substrates with controlled plasmonic aggregates; Somsubhra Saha, Manash Ghosh, Joydeep Chowdhury. Journal of Raman Spectroscopy, 2019, 50, 330 - 344., How SERS responses of probe molecules depend on topographies of the substrates? A vis-à-vis exploration; Sumit Kumar Das, Somsubhra Saha, Manash Ghosh, Joydeep Chowdhury. Vibrational Spectroscopy, 2020, 107, 103031 – 103038., Decoding the topographical features of more realistic SERS active substrates in presence of the probe molecules from statistical considerations: An in-depth study bridging Microscopy with Spectroscopy; Somsubhra Saha, Manash Ghosh, Subhendu Chandra, Joydeep Chowdhury. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021, 628, 127319-127330., Adsorption of 4-Mercapto Pyridine with Gold Nanoparticles embedded in the Langmuir-Blodgett Film matrix of stearic acid: SERS, XPS studies aided by Born-Oppenheimer on the fly dynamics, Time – Resolved Wavelet Transform Theory and DFT; Somsubhra Saha, Bipan Dutta, Manash Ghosh, Joydeep Chowdhury. ACS Omega, 2022, 7(32), 27818-27830., Are morphologies of SERS active substrates Multifractals? An in-depth study from Multifractal Detrended Fluctuation Analysis; Somsubhra Saha, Srimonti Dutta, Joydeep Chowdhury. Journal of Raman Spectroscopy, 2022, 53, 2031-2043.

• 2016 - 2022, Fabrication and characterization of SERS active substrates using self-assembly and Langmuir-Blodgett deposition technique
• 2013 - 2015, Fabrication of highly ordered SERS active nanostructured substrates using Langmuir-Blodgett technique to understand the enhancement mechanism in SERS
• 2012 - 2013, Synthesis and Characterization of Metallic Nanostructures using immiscible binaries
• 2010 - 2011, Diamond-like Nanocomposite thin film as an anti-reflection coating in silicon based solar cell
• 2008 - 2009, Interfacing of Instruments using Lab-View software

• Caste: Scheduled Caste
• Title: Engaging in collaborative Post Doctoral research work at Jadavpur University after obtaining the Ph.D. (Science) degree.
• Date of Birth: 04/30/1987
• Gender: Male
• Nationality: Indian
• Marital Status: Married

Bengali, English, Hindi

• Qualified Graduate Aptitude Test in Engineering 2011 (GATE 2011), organized by the Indian Institute of Technology, Madras (IITM)
• Awarded the International Travel Support by Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Govt. of India to attend and present a poster presentation in the International Conference “VISPEC 2019: Emerging Trends in Vibrational Spectroscopy” held on 11th – 13th September, 2019 at University of Brescia Engineering Campus, Brescia, Italy
• Awarded the Travel Support Grant by Rashtriya Uchchattar Shiksha Abhiyan 2.0 (RUSA 2.0) Govt. of India to attend and present a poster presentation in the International Conference “VISPEC 2019: Emerging Trends in Vibrational Spectroscopy” held on 11th – 13th September, 2019 at University of Brescia Engineering Campus, Brescia, Italy
• Awarded the Junior Research Fellowship (JRF) and Senior Research Fellowship (SRF) by University Grant Commission (UGC), Govt. of India through the Scheme National Fellowship for Scheduled Caste Students (NFSC) in 2017
• Received MHRD fellowship for M.Tech program

• Playing, Reading Books, Learning new topics
• Surface Enhanced Raman Spectroscopy (SERS) and Surface Enhanced Resonance Raman Spectroscopy (SERRS), Fabrication of SERS active substrate, Langmuir-Blodgett Film, Three-Dimensional Finite Difference Time Domain (3D-FDTD) Simulation, Statistical Analysis of Rough Surfaces, Multifractal Detrended Fluctuation Analysis (MFDFA)