Dr. SUDIPTA SARKAR PAL

Sr. Principal Scientist, Micro and Nano Optics Centre (µ-NOC)

Nanophotonics

Current Work Area

My ongoing research is in the field of Nanophotonics which has emerged as an exciting new arena concerned with the interaction of light with nanostructured materials. My current activities involve:
(a) Modification of Optical fiber with plasmonic nanostructures for sensing application
Plasmonics — a rapidly emerging subdiscipline of nanophotonics exploits both localized and propagating surface plasmons for technologically important applications, specifically in sensing and wave guiding. Our group targets sensing application using optical fiber based plasmonic probes. We modify the surface of the optical fiber with metallic nanostructures either by self-assembly or by physical vapour deposition to excite localized and propagating SPR which in turn depends on the refractive index of the dielectric medium in the proximity of the metallic structures. This dependence is exploited in detection scheme for chemical and biological sensing applications, thus enabling the label-free detection of target molecules in real time and at very low concentrations.
(b) Optical fiber based Nanoantenna : It’s application in tweezing, microscopy and spectroscopy
Optical antennas are devices that convert freely propagating optical radiation into localized energy. They enable the control and manipulation of optical fields at the nanometre scale and hold promise for enhancing the performance and efficiency of photodetection, light emission and sensing. Optical nanoantenna is being fabricated in our lab by chemically etching the tip of the optical fiber and being used for
(i) Manipulating light beam - from Gaussian to Bessel and vortex beam
(ii) Optical tweezing
(iii) Tip-enhanced Raman scattering
(iv) Implementation of the antenna as optical probe for optical imaging instrumentation:
(a) Near field and far field Imaging (Near field scanning optical microscope, Interferrometric scanning optical microscope)
(b) Optical coherence tomography

Qualification

(a) B.Sc: Bethune College, Kolkata, West Bengal, India
(b) M.Sc: Calcutta University, West Bengal, India
(c) PhD: Saha Insttitute of Nuclear Physics, Kolkata, West Bengal, India (2006)

R&D Interest

My research interest involves study of light-matter interaction at the nanoscale which will eventually lead to nano-photonic instrumentation and sensing devices. I am particularly interested in integrating functionalized nanostructures within a single optical fiber which can provide the control and manipulation of light at nano-scale. Both metallic and dielectric Photonic and plasmonic crystals when attached to the optical fiber tip will offer unprecedented opportunities for subwavelength field confinement and resonant field enhancement that promise new applications ranging from tumour therapy to tip-enhanced Raman scattering, nonlinear optics and energy harvesting. Single molecule sensing scheme based on these structures can be developed which is the ultimate limit in optical sensing.

Research Publications

1. SHARMA PALLAVI, BHAGATJI ALPANA, TYAGI SACHIN, PAL SUDIPTA SARKAR. Harvesting light from ZnS:Mn:Eu/PVDF mechano-luminescent composite under mechanical impact for energy conversion application. Sensors and Actuators A-Physical . 16-04-2023, 353, 114197
2. SHARMA PALLAVI, DAIPURIYA RITU, BHAGATJI ALPANA, TYAGI SACHIN, PAL SUDIPTA SARKAR. Impurity induced mechano-luminescence under different pressure impacts for Mn doped ZnS microcrystals. Optical Materials. 01-12-2021, 122 (B), 111798
3. CHOPRA ADITI, MOHANTA GIRISH CHANDRA, DAS BHARGAB, BHATNAGAR RANDHIR, PAL SUDIPTA SARKAR. Tuning the Sensitivity of a Fiber-Optic Plasmonic Sensor: An Interplay Among Gold Thickness, Tapering Ratio and Surface Roughness. IEEE Sensors Journal. 15-05-2021, 21(10), 12153-12161
4. KANAWADE RAJESH VISHWANATH, KUMAR AJAY, PAWAR DNYANDEO, VAIRAGI KAUSHAL, LATE DATTATRAY, PAL SUDIPTA SARKAR, SINHA RAVINDRA KUMAR, MONDAL SAMIR K. Negative axicon tip-based fiber optic interferometer cavity sensor for volatile gas sensing. Optics Express. 01-03-2019, 27(5), 7277-7290
5. KAUSHIK SIDDHARTH, TIWARI UMESH KUMAR, PAL SUDIPTA SARKAR, SINHA RAVINDRA KUMAR. Rapid detection of Escherichia coli using fiber optic surface plasmon resonance immunosensor based on biofunctionalized Molybdenum disulfide (MoS2) nanosheets. Biosensors & Bioelectronics. 01-02-2019, 126, 501-509
6. DEVI SARITA, KAUR AMANJOT, PAL SUDIPTA SARKAR, VOHRA SUJATA, TYAGI SACHIN. Synthesis and characterization of highly luminescent N-doped carbon quantum dots for metal ion sensing. Integrated Ferroelectrics. 01-01-2018, 186, 32-39
7. MINZ RASHMI A, PAL SUDIPTA SARKAR, CHOPRA ADITI, BARGUJAR SHIVAM, BHATNAGAR RANDHIR, SINHA RAVINDRA KUMAR, MONDAL SAMIR K. Magnetron Sputtering Coated Optical Fiber Probe Designs for Surface Plasmon Resonance Sensor. IEEE Journal of Selected Topics in Quantum Electronics. 01-04-2017, 23(2), 4601106
8. MINZ RASHMI A, PAL SUDIPTA SARKAR, SINHA RAVINDRA KUMAR, MONDAL SAMIR K. Plasmonic Coating on Chemically Treated Optical Fiber Probe in the Presence of Evanescent Wave: a Novel Approach for Designing Sensitive Plasmonic Sensor. Plasmonics. 01-04-2016, 11(2), 653–658
9. DECOMBE JEAN- BAPTISTE, MONDAL SAMIR K, KUMBHAKAR DHARMDAS, PAL SUDIPTA SARKAR, FICK JOCHEN. Single and Multiple Microparticle Trapping Using Non-Gaussian Beams From Optical Fiber Nanoantennas. IEEE Journal of Selected Topics in Quantum Electronics. 01-07-2015, 21(4), Article No. 4500106
10. PAL SUDIPTA SARKAR, MONDAL SAMIR K, KUMAR RAJ, AKULA APARNA, GHOSH RIPUL, BHATNAGAR RANDHIR. Optical fiber antenna generating spiral beam shapes. Applied Physics Letters. 23-01-2014, 104, 031105
11. MONDAL SAMIR K, PAL SUDIPTA SARKAR, TIWARI UMESH KUMAR. Evanescent wave assisted nanomaterial coating. Applied Optics. 01-08-2013, 52(22), 5455-5459
12. PAL SUDIPTA SARKAR, MONDAL SAMIR K, BAJPAI P P, KAPUR PAWAN. Optical fiber tip for field-enhanced second harmonic generation. Optics Letters. 01-10-2012, 37(19), 4017-4019
13. MONDAL SAMIR K, PAL SUDIPTA SARKAR, KAPUR PAWAN. Optical fiber nano-tip and 3D bottle beam as non-plasmonic optical tweezers. Optics Express. 01-07-2012, 20(15), 16180-16185
14. PAL SUDIPTA SARKAR, MONDAL SAMIR K, TIWARI UMESH KUMAR, SWAMY P. VENU GOPALA, KUMAR MANISH, MEHLA N S, BAJPAI P P, KAPUR PAWAN. Etched multimode microfiber knot-type loop interferometer refractive index sensor. Review of Scientific Instruments. 01-09-2011, 82(9), 095107-4
15. PAL SUDIPTA SARKAR, K SCHOUTEDEN, HAESENDONCK C VAN. Influence of confinement on single-electron charging in a network of nanoparticles. Journal of Applied Physics. 15-08-2011, 110(4),

Patents

Patent(s) Filed


Patent(s) Granted

Significant recognition: Awards, Honours and Fellowships

Other Information

Work Experience :
1. Visiting Research Fellow, Max-Planck-Institut für Metallforschung, Stuttgart, Germany (3 months, 2002)
2. Post Doctoral Fellow, Katholieke Universiteit Leuven, Belgium (2006-2008)
3. Visiting scientist, Materials Science Division, Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu, India (2008-2009)
4. Guest Lecturer, Department of Nanoscience and Nanotechnology, Panjab University, Chandigarh, India (2009-2010)
5. Fellow Scientist, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, India (2010-June 2012)
6. Senior Scientist, CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Chandigarh, India (June 2012-present)

Technology (Developed/Transfered/Commercialised) / Software Applications, Algorithms designed/developed/deployed and implemented

Contact



Email:

sudipta[at]csio[dot]res[dot]in

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