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Sanghamitra Ghosal

About


Designation: Research Scholar
Degree: Ph. D.
Fellowship: Visvesvaraya PhD Fellowship
Enrollment No.: 3625AE1, Date: 13 Jul 2015
Registration No.: PhD/R/2016/0133, Date: 16 Nov 2016Supervisor: Partha Bhattacharyya

Academic Qualification

PhD : School of VLSI Technology, Indian Institute of Engineering Science & Technology, Shibpur, Howrah, West Bengal, India,  : July 2015 - October 2020

Thesis:  “Ternary Hybrid Junctions of Semiconducting Oxide Nanostructures, Reduced Graphene Oxide and Noble Metal for Improved Gas Sensor Device Applications.”

M.Tech: Department of Instrumentation & Electronics Engineering, Jadavpur University, Kolkata, India : July 2009 - June 2011

Cumulative Performance Index (CPI): 9.28 - Rank 1st

Thesis:  “Characterization of Resonance Frequency Analysis (RFA) Based Transducer For Quantification Of Implant - Dental Plaster Interface Dynamics” (Biomedical Application - Synthesis and Application of Biosensor).

B.Tech : Electronics & Instrumentation Engineering, Academy of Technology, (WBUT),: July 2005 - June 2009

Degree Grade Point Average (DGPA): 8.47


Research Area


Topic: Ternary Hybrid Junctions of Semiconducting Oxide Nanostructures, Reduced Graphene Oxide and Noble Metal for Improved Gas Sensor Device Applications

Research Area : Binary and Ternary Hybrid (Graphene-semiconducting metal oxide-noble metal) nanoelectronics based gas sensor


Skills


Technical Skills : Languages and Software:  C, C++ Latex, Assembly (8085, 8086, 8051), VHDL (basic), LabVIEW (8.5), MATLAB (10), X-Pert HighScore plus, Chemdraw

Experimental Skills : Device Characterization Skills:

(a) Electrical: I-V, C-V, Hall Mobility, Electrochemical Impedance Spectroscopy (EIS)

(b) Optical: RAMAN, PL

(c) Structural: XRD, TEM

(d) Morphological: FESEM

(e) Surface: AFM, XPS

Wafer Fab Skills :

(a) Deposition: CVD, E-beam Evaporation, Thermal Evaporation

(b) Chemical Synthesis: Chemical Bath Deposition (CBD), Hydrothermal Synthesis, Electro-chemical deposition

(c) Lithography: Photo-lithography using AZ5214E (single layer and bilayer lift-off process)

(d) Etching: Dry Etch (ICPRIE)

(e) Annealing: Rapid Thermal Annealing

Sensing Measurement Skills :

Standardization of Frequency-Impedance and Frequency-Phase plots using Agilent LCR Meter; Hands on experience in Keithley 6487 Pieco-Keysight ammeter / voltage source

Presently working at : Actively looking for Post-Doc (PhD completion on 7th Oct, 2020)

Work Experience:

  • Professional experience (4 years in teaching - Supreme Knowledge Foundation Group of Institutions (WBUT))
  • PhD Internship (4 months - CeNSE Lab, IISc Bangalore) - Research internship (cleanroom  research experience along with expertise gained in the material synthesis, material characterization laboratory and gas sensor laboratory as an independent user) at CeNSE Lab, (Centre for Nano Science & Engineering,  Indian Institute of Science (IISc), Bangalore, India in the development of Micro-heater based packaging device embed with RGO/TiO2 nanotubes in the field of application in chemical sensing.

Awards


  1. Best Poster Presentation Award, International conference - SCAN (Synthesis, Characterization and Applications of nanomaterials)-2019, MRS (Materials Research Society of singapore), 1st to 2nd November, 2019.
  2. Best Oral Presentation Award in YSC (Young Scientist Colloquium)-2019, MRSI (Materials Research Society of India) on 17th  September, 2019.
  3. Visvesvaraya Fellowship' for PhD Research Programme, Indian Institute of Engineering Science & Technology (IIEST), Shibpur, India.
  4. ‘Gold Medalist' (Rank - 1st)  Master in Technology (M.Tech)  Jadavpur University, Kolkata, India, 2011.

Publications


Publications

Journal :

  1. Sanghamitra Ghosal, K.Dutta, P. Bhattacharyya, "Understanding the Improved Vapor Sensor Device Performance of Dual Surface Engineered WO3 Nanospheres using Semi-Quantitative Energy Band Model," IEEE Electron Device Letters, vol.41, no. 6, pp.912-915, 2020. DOI: 10.1109/LED.2020.2991085.
  2. Sanghamitra Ghosal, Partha Bhattacharyya, "Honeycomb Texturing of Hierarchical Nanoflowers WO3 as an Efficient Route to Improve Repeatability and Stability of Room Temperature Vapor Sensor," IEEE Transactions on Device and Materials Reliability, vol. 20, no. 1, pp. 84-91, 2020.DOI: 10.1109/TDMR.2019.2960932.
  3. Sanghmitra Ghosal, Partha Bhattacharyya, "Fabrication, Characterization and Gas Sensing Performance of Pd, RGO and MnO2 Nanoflowers based Ternary Junction Device," IEEE Transactions on Electron Devices, vol. 66, no. 9, pp.1–6, 2019. DOI:10.1109/TED.2019.2925862.
  4. Sanghamitra Ghosal, Partha Bhattacharyya, "Time Dependent Morphological Evolution of Hydrothermally Derived MnO2 Nanostructures and Corresponding Methanol Sensing Performance," IEEE Transactions on Nanotechnology, vol. 18, pp. 502–508, 2019}.DOI:10.1109/TNANO.2019.2915197.
  5. Sanghamitra Ghosal, Partha Bhattacharyya, "Irreversible n to p Transition and Corresponding Performance Improvement of RGO/TiO2 Nanotubes Hybrid Vapor Sensor Devices by Varying Electrophoretic Deposition Time," IEEE Transactions on Nanotechnology, vol. 17, no.6, pp. 1098–1105, 2018. DOI:10.1109/TNANO.2018.28376.
  6. Sanghamitra Ghosal, Partha Bhattacharyya, "A Potential Gas Sensor Device based on Pd/RGO/TiO2 Nanotube Ternary Hybrid Structure," Microelectronics Reliability (Elsevier), vol. 78, pp. 299-306, 2017. DOI: 10.1016/j.microrel.2017.09.020.
  7. Sanghamitra Ghosal, Partha Bhattacharyya, "An Integrated Methanol Micro-Sensor Device with Embedded Ti/Pt Microheater and TiO2 Nanotube Array Sensing Layer," Sensor Letters, vol. 17, pp. 1-6, 2019. DOI: 10.1166/sl.2019.4089.
  8. Sanghamitra Ghosal, Partha Bhattacharyya, "A Review on the Sensing performances for Three Different Ternary Hybrid (Pd/RGO/TiO2-NTs, Pd/RGO/MnO2-NFs and Pd/RGO/WO3-NFs) Gas Sensor Device Structures,"CSI transactions on ICT (Springer), pp. 1-6, 2020. DOI:10.1007/s40012-020-00299-z.
  9. Sanghamitra Ghosal, Partha Bhattacharyya, "Influence of Distributed Reduced Graphene Oxide Clusters on Methanol Sensing Performance of TiO2 Nanotube Based Device," CSI Transactions on ICT (Springer), vol. 6, no.1, pp. 71-74, 2017. DOI 10.1007/s40012-017-0177-5.
  10. R. Roychaudhuri, D. Acharyya, Sanghamitra Ghosal, P. Bhattacharyya, "Understanding the Apparent Non-Reliability in the Sensing Characteristics of MnO2 Self-assembled Hierarchical Nanostructure," IEEE Transactions on Device and Materials Reliability, vol. 1, no.4, pp. 628-635, 2017. DOI: 10.1109/TDMR.2018.2878257.

 

Conference :

  1. Sanghamitra Ghosal, Partha Bhattacharyya, "Highly Selective Integrated Micro-heater based packaged H2 Gas Sensor Device with RGO/TiO2 Nanotube Hybrid Sensing Layer,"YSC (Young Scientist Colloquium)-2019 (Materials Research Society of India (MRSI), 17th September, 2019, Saha Institute of Nuclear Physics, Kolkata, India.(Best Oral Presentation Award)
  2. Sanghamitra Ghosal, Partha Bhattacharyya, "Fabrication, Characterization and Gas Sensing Performance of Ternary Hybrid Junction of Honeycomb Textured WO3 Nanoflowers/rGO Pd,"SCAN-2019, Materials Research Society of Singapore (MRS-Singapore),1st to 2nd, November 2019, Novotel, Kolkata, India.(Best poster Presentation Award)
  3. Sanghamitra Ghosal, Indranil Maity, Partha Bhattacharyya, "An Integrated CO2 Sensor Using TiO2NT/RGO Hybrid Sensing Layer with embedded Micro hot Plate," IEEE-ISDCS (International Symposium on Devices, Circuits and Systems) 2019, March, 2019, Japan.
  4. Sanghamitra Ghosal, Partha Bhattacharyya,"Performance Improvement of RGO/MnO2 Nanoflower Hybrid Structure for Vapor Sensing Applications by Comparing with its Pristine Counterpart," IEEE-EDTM (Electron Devices Technology and Manufacturing), 13th to 15th March, 2019, Singapore.
  5. Sanghamitra Ghosal, Partha Bhattacharyya, "Fabrication, Characterizations And Vapor Sensing Characteristics Of Type I Heterostructure Employing 2D ZnO Nanosheets And 2D RGO," 1st International Conference on nanotechnology, 10th  to  13th December, 2018, NTAConf, Cairo, Egypt.
  6. Partha Bhattacharyya, Sanghamitra Ghosal, "Integrated Gas Sensor Device Using RGO/TiO2 Nanotube Hybrid Sensing Layer And Embedded Pt Microheater For Efficient H2 Detection," 1st International Conference on nanotechnology, 10th to 13th December, 2018, NTAConf, Cairo, Egypt.
  7. Sanghamitra Ghosal, Partha Bhattacharyya, "An Efficient Microsensor System for Selective Detection of Methanol using TiO2 Nanotubes," IEEE EDKCON (Electron Device Kolkata Conference), 24th to 25th November, 2018, The Pride Hotel, Kolkata, India.
  8. Sanghamitra Ghosal, Partha Bhattacharyya,"Fabrication and Electrical Characterization of $TiO_2$-NT/RGO/Pd Hybrid Structure,"ISDCS (International Symposium on Devices, Circuits and Systems)-2018 (IEEE), 29th to 31st March, 2018, Indian Institute of Engineering Science & Technology (IIEST) Shibpur, Howrah, Kolkata, India.
  9. Sanghamitra Ghosal, Partha Bhattacharyya, "Irreversible n to p Transition and Corresponding Performance Improvement of RGO/TiO2-NT Hybrid Gas Sensor Devices by Varying the Electrophoretic Deposition Time," NMDC (Nanotechnology Materials and Devices Conference-2017 (IEEE), 2nd to 4th, October, 2017, Singapore.
  10. Sanghamitra Ghosal, Partha Bhattacharyya, "Fabrication, Characterization and Gas Sensing properties of Two Dimensional Hybrid Structure of Reduced Graphene Oxide-ZnO,"Materials Research Society of India (YSC-2017), 11th October, 2017, Indian Institute of Engineering Science & Technology (IIEST) Shibpur, Howrah, Kolkata, India.
  11. Sanghamitra Ghosal, Partha Bhattacharyya, "Pd/RGO/TiO2 Nanotube Ternary Hybrid Structure as a Novel Gas Sensor Device," Materials Research Society of India (YSC-2016), 16th September, 2016, Kolkata, India.
  12. Sanghamitra Ghosal, Basanta Bhowmik, Partha Bhattacharyya, "Low temperature ethanol sensing performance of hydrothermally grown TiO2 nanoflowers in resistive mode," 4th Nano Today Conference Dubai, 6th to 10th December, 2015, Dubai.
  13. Partha Bhattacharyya, Sanghamitra Ghosal,"Fabrication, Characterizations and Gas Sensing Performance of TiO2 Nanotubes/RGO/Pd Ternary Hybrid Structure," 5th International Conference on Multifunctional, Hybrid and Nanomaterials,  6th to 10th March, 2017, lisbon, Portugal.
  14. D.Acharyya, Sangamitra Ghosal, R.Roychaudhuri, P. Bhattacharyya, "Hierarchical MnO2 Nanoflowers based Efficient Room Temperature Alcohol Sensor," IEEE Sensor Conference, 28th to 31st October, New Delhi, India.
  15. Koushik Dutta, Suman Ghosal, Sanghamitra Ghosal,Bikramdeb Chakraborty, Partha Bhattacharyya,"A quantitative Approach deriving Equivalent Circuit elements for p-rGO and n-TiO_2 nanotube junction," SCNE-2019, 8th to 9th November, BITS Pilani, 2019.
  16. Indrajit Sil, Sohini Mondal, Sanghamitra Ghosal, Partha Bhattacharyya, "An Integrated TiO2 Nanotube Array With Inbuild Microheater for NO Gas Sensing," IWPSD 2019, 17th to 20th December, 2019, Novotel, Kolkata.
  17. Sanghamitra Ghosal, Paramita Banerjee , Bhaswati Goswami, Ratna Ghosh, "Determination of Stability of Dental Implant from Impedance Studies using Resonance Frequency Analysis" 2011 Second International Conference on Emerging Applications of Information Technology," EAIT - 2011(IEEE),pp. 71-74, 19th to 20th February, 2011, Science City, Kolkata.DOI :10.1109/EAIT.2011.58