Name :   Dr.Paritosh Dubey

Designation :   Sr. Scientist

Contact Information :

• Email id :  paritosh.dubey@nml.res.in
• Mobile/Phone no:  06572345256

Educational Qualification :   Ph.D.

Areas of Expertise :   Synthesizing and developing nanocomposite coatings using PVD and thermal spray for various scientific and cutting-edge research areas like optoelectronics, energy harvesting, heat mirror, hard, wear, and corrosion resistance coatings materials

No. of Papers Published :   26

• International :   1. Komal Singh, Sharmistha Anwar, Suman K. Mishra, Paritosh Dubey, “Enhanced thermoelectric performance of mechanically hard nano-crystalline-sputtered SnSe thin film compared to the bulk of SnSe”, Journal of Materials Science: Materials in Electronics 34 (2023) 1115. 2. Marina V Makarova, Kaichi Suzuki, Hirofumi Kon, Paritosh Dubey, Hiroshi Sonobe, Toru Matsumura, Hitoshi Saito, “High-Frequency Magnetic Field Energy Imaging of Magnetic Recording Head by Alternating Magnetic Force Microscopy (A-MFM) with Superparamagnetic Tip”, Applied Sciences 13 (2023) 4843. 3. Ajay Kumar Verma, Kishor Kumar Johari, Paritosh Dubey, Christophe Candolfi, Bertrand Lenoir, Sumeet Walia, SR Dhakate, Bhasker Gahtori, “Coupling of electronic transport and defect engineering substantially enhances the thermoelectric performance of p-type TiCoSb HH alloy”, Journal of Alloys and Compounds 947 (2023) 169416. 4. Ajay Kumar Verma, Kishor Kumar Johari, Paritosh Dubey, Durgesh Kumar Sharma, Sudhir Kumar, Sanjay Rangnate Dhakate, Christophe Candolfi, Bertrand Lenoir, Bhasker Gahtori, “Realization of Band Convergence in p-Type TiCoSb Half-Heusler Alloys Significantly Enhances the Thermoelectric Performance”, ACS Applied Materials & Interfaces 15 (2023) 942–952. 5. K. Singh, P. Dubey, P. K. Joshi, B. L. Choudhary, G. Arora, B. L. Ahuja, K. Kumar, and S. K. Mishra, “Experimental and Theoretical Divulging of Electronic Structure and Optical Properties of Zn-Doped SnSe Thermoelectric Materials”, Materials Science in Semiconductor Processing 156 (2023) 107301. 6. Sunil Kumar Tiwari, Akula Umamaheswara Rao, Vipin Chawla, Paritosh Dubey, Vikas Saxena, Amit K Chawla, Devesh Kumar Avasthi, “Synthesis and characterization of sputter-deposited Ni-rich Ni3Al hard coatings”, Journal of Alloys and Compounds 926 (2022) 166802. 7. K Singh, S Anwar, P Dubey*, SK Mishra, “Influence of temperatures on structure, thermoelectric, and mechanical properties of nanocrystalline SnSe thin films deposited by thermal evaporation”, Materials Today Communications, 32 (2022) 103880. 8. A. Bose, Soni, K. Singh, P. Dubey*, S.K. Mishra, “Study of Dry Sliding Wear and Corrosion Behavior of Nanocomposite Al-Si-N Coated Steel”, Surface and coating Technology, 441 (2022) 128543. 9. Archana Mishra, Paritosh Dubey, Ramesh Chandra, Saurabh Kumar Srivastava, “Observation of large exchange bias field in Mn rich NiMnAl Heusler alloy thin film”, Journal of Magnetism and Magnetic Materials, 532 (2021) 167964. 10. C.V. Ramana, Anil K Battu, Paritosh Dubey, Gabriel A Lopez, “Phase-control-enabled enhancement in hydrophilicity and mechanical toughness in nanocrystalline tungsten oxide films for energy related applications”, ACS Applied Nano Materials 3 (4) (2020) 3264-3274. 11. P. Dubey, Anil K. Battu, V. Shutthanandan, and C.V. Ramana, “Effect of Interface Structure on the Hydrophobicity, Mechanical and Optical Properties of HfO2/Mo/HfO2 Multilayer Films”, Journal of The Minerals, Metals & Materials Society (TMS) 71 (2019) 3711-3719. 12. S. Goel, P. Dubey, Supriyo Ray, R. Jayaganthan, A. B. Pant, R. Chandra, “Co-sputtered Antibacterial and Biocompatible Nanocomposite Titania-Zinc Oxide thin films on Si substrates for Dental Implant applications”, Materials Technology: Advanced Performance Materials 34 (2019) 32-42. 13. P. Dubey, J. Gomez, S. Manandhar, V. Shutthanandan, C.V. Ramana, “Microstructure Tuning Facilitated Efficiency Enhancement and Environmental Benign Nature of HfO2/Mo/HfO2 Multilayer Films for Utilization in Buildings”, Solar Energy 166 (2018) 146–158. 14. P. Dubey, G. Martinez, S. Srivastava, R. Chandra, C.V. Ramana, “Effect of bias induced microstructure on the mechanical properties of nanocrystalline zirconium tungsten nitride coatings”, Surface & Coatings Technology 313 (2017) 121–128. 15. S. Verma, P. Dubey, A. W. Selokar, D. K. Dwivedi, R. Chandra, “Cavitation Erosion Behavior of Nitrogen Ion Implanted 13Cr4Ni Steel”, Transactions of Indian Institute of Metal 70(4) (2017) 957-965. 16. P. Dubey, G. A. Lopez, G. Martinez, and C. V. Ramana, “Enhanced mechanical properties of W1-yMoyO3 nanocomposite thin films”, Journal of Applied Physics 120, (2016) 245103. 17. P. Dubey, S. Srivastava, R. Chandra, C.V. Ramana, “Toughness enhancement in zirconium-tungsten-nitride nanocrystalline hard coatings”, AIP Advances 6 (7) (2016) 075211. 18. P. Dubey, V. Arya, S. Srivastava, D. Singh, R. Chandra, “Study on thermal stability and mechanical properties of nanocomposite Zr-W-B-N thin films” Surface and coating Technology 284 (2015) 173–181. 19. V. Chauhan, P. Dubey, S. Verma, R. Jayaganthan, R. Chandra, “Dry Sliding and Abrasive Wear Behavior of Nanostructure Zr-W-N Coating”, Transactions of Indian Institute of Metal 68(5) (2015) 799-807. 20. P. Dubey, V. Arya, S. Srivastava, D. Singh, R. Chandra, “Study of thermal stability and mechanical properties of fcc phase Zr22W19N58 thin films deposited by reactive magnetron sputtering”, Surface and coating Technology 245 (2014) 34-39. 21. Archana Mishra, S.K. Srivastava, Arvind Kumar, Paritosh Dubey, Samta Chauhan, Amit Kumar Singh, D. Kaur, R. Chandra, “Thickness dependent exchange bias in co-sputter deposited Ni–Mn–Al Heusler alloy hard nanostructured thin films”, Thin Solid Films 572 (2014) 142-146. 22. P. Dubey, V. Dave, S. Srivastava, D. Singh, R. Chandra, “Study of thermal stability and mechanical properties of amorphous Zr19W18N63 coatings deposited by DC/RF reactive magnetron sputtering, Surface and coating Technology 237 (2013) 205-211. 23. P. Dubey, V. Arya, S. Srivastava, D. Singh, R. Chandra, “Effect of nitrogen flow rate on structural and mechanical properties of Zirconium Tungsten Nitride (Zr-W-N) coatings deposited by magnetron sputtering”, Surface and coating Technology 236 (2013) 182-187. 24. V. Dave, P. Dubey, H.O. Gupta, R. Chandra, “Effect of sputtering gas on structural, optical and hydrophobic properties of DC-sputtered hafnium oxide thin films”, Surface and Coatings Technology, 232 (2013) 425–431. 25. V. Dave, P. Dubey, H.O. Gupta, R. Chandra, “Influence of sputtering pressure on the structural, optical and hydrophobic properties of sputtered deposited HfO2 coatings”, Thin Solid Films 549 (2013) 2 –7. 26. G. Das, Mousumi Das, Sabita Ghosh, Paritosh Dubey and A. K. Ray, “Effect of Aging on Mechanical Properties of 6063 Al-Alloy Using Instrumented Indentation Technique”, Materials Science and Engineering ‘A’ 527(6) (2010) 1590-1594.
• National :   1. V. Dave, P. Dubey, H.O. Gupta, R. Chandra, “Nanotechnology for outdoor High voltage insulator: An experimental investigation”, International Journal of ChemTech Research 5 (2) (2013) 666-670. 2. V. Dave, P. Dubey, H. O. Gupta and R. Chandra, “Temperature dependent structural, optical and hydrophobic properties of sputtered deposited HfO2 films”. AIP Conference Proceeding 29 1576 (2014); http://dx.doi.org/10.1063/1.486197. 3. V. Dave, P. Dubey, H.O. Gupta, R. Chandra, “Microstructural and optical properties of Sputter deposited Hafnium oxynitride films on glass substrate”, International Conference on Energy Efficient Technologies for Sustainability, ICEETS -2013, Article number 6533528 1031-1035 (2013).

No.of.Patents :  

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No.of.Technologies :  

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Equipment/Software Skills :   Fabrication Techniques • DC/RF Magnetron Sputtering • Thermal Evaporation • Pulse Laser Deposition • Spin Coater • E-beam Evaporation • High-Velocity-Oxy-Fuel Characterization Techniques • Field Emission Scanning Electron Microscope: Micrographs, Cross-section, EDS & EBSD • High-Resolution Transmission Electron Microscope: High-resolution lattice imaging, EDS • Scanning Probe Microscope: Tapping and contact mode, STM & MFM • Spectrophotometer: UV/Vis/NIR spectrum • X-Ray Diffractometer: θ-θ & θ-2θ scans, GIXRD & High-temperature XRD • Nano-indentation: Load-depth curves & scratch test • Electrical transport measurements: Four probe resistivity, I-V, C-V • Contact Angle by Goniometer: Hydrophobicity

Awards and Recognitions :