Materials Science Centre

• INSA medal for Young Scientists (2022)
• NASI Young Scientist Platinum Jubilee Award (2021)
• Nano Science Fellowship Award
• Smalley-Curl Fellowship

Journal
• Synthesis of atomically thin yellow pearl: An impetus for nonlinear optical effect assisted light scattering application Mandal N., Pramanik A., Dey A., Kumbhakar P., Kochat V., Gautam A.R.S., Glavin N., Roy A.K., Ajayan P.M., Tiwary C.S. By Optical Materials 135 - (2023)
• Raman spectroscopic studies on the evolution of interlayer coupling and stacking order in twisted bilayers and polytypes of WSe2 Paul S., Abhijith B.M., Ghosh P., Paromita Chanda P., Glavin N.R., Roy A.K., Watanabe K., Taniguchi T., Kochat V. By Journal of Applied Physics 133 - (2023)
• Emerging two-dimensional tellurides Siddique S., Chowde Gowda C., Demiss S., Tromer R., Paul S., Sadasivuni K.K., Olu E.F., Chandra A., Kochat V., Galvão D.S., Kumbhakar P., Mishra R., Ajayan P.M., Sekhar Tiwary C. By Materials Today 51 402-426 (2021)
• Spontaneous Time-Reversal Symmetry Breaking at Individual Grain Boundaries in Graphene Hseih K., Kochat V. , Biswas T. , Tiwary C. S., Mishra A. , Ramalingam G. , Jayaraman A. , Chattopadhyay K. , Raghavan S. , Jain M. , Ghosh A. By Physical Review Letters 126 206803- (2021)
• Spontaneous Time-Reversal Symmetry Breaking at Individual Grain Boundaries in Graphene Hsieh K., Kochat V., Biswas T., Tiwary C.S., Mishra A., Ramalingam G., Jayaraman A., Chattopadhyay K., Raghavan S., Jain M., Ghosh A. By Physical Review Letters 126 - (2021)
• Review of strategies toward the development of alloy two-dimensional (2D) transition metal dichalcogenides Singh A.K., Kumbhakar P., Krishnamoorthy A., Nakano A., Sadasivuni K.K., Vashishta P., Roy A.K., Kochat V., Tiwary C.S. By iScience 24 - (2021)
• Polytypism in ultrathin tellurium Apte A., Bianco E., Krishnamoorthy A., Yazdi S., Rao R., Glavin N., Kumazoe H., Varshney V., Roy A., Shimojo F., Ringe E., Kalia R.K., Nakano A., Tiwary C.S., Vashishta P., Kochat V., Ajayan P.M. By 2D Materials 6 - (2019)
• Optical control of non-equilibrium phonon dynamics Krishnamoorthy A., Lin M. , Zhang X. , Weninger C. , Ma R. , Britz A. , Tiwary C. S., Kochat V. , Apte A. , Yang J. , Park S. , Li R. , Shen X. , Wang X. , Kalia R. , Nakano A. , Shimojo F. , Fritz D. , Bergmann U. , Ajayan P. , Vashishta P. By Nano Letters 19 4981-4989 (2019)
• Polytypism in ultrathin tellurium Apte A., Bianco E. , Krishnamoorthy A. , Yazdi S. , Rao R. , Glavin N. , Kumazoe H. , Varshney V. , Roy A. , Shimojo F. , Ringe E. , Kalia R. K., Nakano A. , Tiwary C. S., Vashishta P. , Kochat V. , Ajayan P. M. By 2D Materials 6 015013- (2018)
• Consolidation of Functionalized Graphene at Ambient Temperature via Mechano-chemistry Kabbani M. A., Kochat V. , Bhowmick S. , Soto M. , Som A. , Krishnadas K. R., Woellner C. F., Jaques Y. M., Barrera E. V., Asif S. , Vajtai R. , Pradeep T. , Galvão D. S., Kabbani A. T., Tiwary C. S., Ajayan P. M. By Carbon 134 491-499 (2018)
• Exfoliation of a non-van der Waals material from iron ore hematite Balan A. P., Radhakrishnan S. , Woellner C. F., Sinha S. K., Deng L. , Reyes C. D., Rao B. M., Paulose M. , Neupane R. , Apte A. , Kochat V. , Vajtai R. , Harutyunyan A. H., Chu C. , Costin G. , Galyao D. S., Marti A. A., Aken P. A., Varghese O. K., Tiwary C. S., Ramaswamy Iyer A. M., Ajayan P. M. By Nature Nanotechnology 13 602-609 (2018)
• Atomically thin gallium layers from solid-melt exfoliation Kochat V., Samanta A. , Zhang Y. , Bhowmick S. , Asif S. A., Vajtai R. , Singh A. K., Tiwary C. S., Ajayan P. M. By Science Advances 4 1701373- (2018)
• Structural Phase Transformation in Strained Monolayer MoWSe2 alloy Apte A., Kochat V. , Rajak P. , Krishnamoorthy A. , Manimunda P. , Hatchel J. A., Idrobo J. C., Syed Amanulla S. A., Vashishta P. , Nakano A. , Kalia R. K., Tiwary C. S., Ajayan P. M. By ACS Nano 12 3468-3476 (2018)
• Re Doping in 2D Transition Metal Dichalcogenides as a New Route to Tailor Structural Phases and Induced Magnetism Kochat V., Apte A. , Hatchel J. A., Kumazoe H. , Krishnamoorthy A. , Susarla S. , Idrobo J. C., Shimojo F. , Vashishta P. , Kalia R. , Nakano A. , Tiwary C. S., Ajayan P. M. By Advanced Materials 29 1703754- (2017)
• Metal Immiscibility Route to Synthesis of Ultrathin Carbides, Borides, and Nitrides Wang Z., Kochat V. , Pandey P. , Kashyap S. , Chattopadhyay S. , Samanta A. , Sarkar S. , Manimunda P. , Zhang X. , Asif S. , Singh A. K., Chattopadhyay K. , Tiwary C. S., Ajayan P. M. By Advanced Materials 29 1700364- (2017)
• Phase Segregation Behavior of Two-Dimensional Transition Metal Dichalcogenide Binary Alloys Induced by Dissimilar Substitution Susarla S., Kochat V. , Kutana A. , Hatchel J. A., Idrobo J. C., Vajtai R. , Yakobson B. I., Tiwary C. S., Ajayan P. M. By Chemistry of Materials 29 7431-7439 (2017)
• Directly Identifying Phase Segregation in 2D Quaternary Alloys Hatchel J. A., Susarla S. , Kochat V. , Tiwary C. S., Ajayan P. , Idrobo J. C. By Microscopy and Microanalysis 23 1438-1439 (2017)
• Effect of Carrier Localization on Electrical Transport and Noise at Individual Grain Boundaries in Monolayer MoS2 Hseih K., Kochat V. , Zhang X. , Gong Y. , Tiwary C. S., Ajayan P. M., Ghosh A. By Nano Letters 17 5452-5457 (2017)
• Ultrafast non-radiative dynamics of atomically thin MoSe2 Lin M., Kochat V. , Krishnamoorthy A. , Weninger C. , Zhang X. , Apte A. , Tiwary C. S., Li R. , Prezhdo O. , Kalia R. , Ajayan P. , Nakano A. , Wang X. , Vashishta P. , Fritz D. , Bergmann U. By Nature Communications 8 1745- (2017)
• Fluorinated h-BN as magnetic semiconductor Radhakrishnan S., Das D. , Samanta A. , Reyes C. D., Deng L. , Alemany L. B., Weldeghiorghis T. K., Khabashesku V. N., Kochat V. , Jin Z. , Sudeep P. M., Marti A. A., Chu C. , Roy A. , Tiwary C. S., Ajayan P. M. By Science Advances 3 1700842- (2017)
• Quaternary 2D transition metal dichalcogenides with tunable bandgap Susarla S., Kutana A. , Hatchel J. A., Kochat V. , Apte A. , Vajtai R. , Idrobo J. C., Yakobson B. I., Tiwary C. S., Ajayan P. M. By Advanced Materials 29 1702457- (2017)
• 2D Heterostructure coatings of hBN-MoS2 layers for corrosion resistance Vandana S., Kochat V. , Lee J. , Varshney V. , Yazdi S. , Shen J. , Kosolwattana S. , Vinod S. , Vajtai R. , Roy A. K., Tiwary C. S., Ajayan P. M. By J. Phys. D: Appl. Phys. 50 045301- (2016)
• Magnitude and Origin of Electrical Noise at Individual Grain Boundaries in Graphene Kochat V., Tiwary C. S., Biswas T. , Ramalingam G. , Hseih K. , Chattopadhyay K. , Raghavan S. , Jain M. , Ghosh A. By Nano Letters 16 562- (2016)
• Origin of 1/f noise in graphene produced for large-scale applications in electronics Kochat V., Sahoo A. , Pal A. N., Easwar S. , Ramalingam G. , Sampathkumar A. , Tero R. , Thu T. V., Kaushal S. , Okada H. , Sandhu A. , Raghavan S. , Ghosh A. By IET Circuits, Devices & Systems 9 52- (2015)
• Insights on Defect-Mediated Heterogeneous Nucleation of Graphene on Copper Ghosh P., Kumar S. , Ramalingam G. , Kochat V. , Radhakrishnan M. , Dear S. , Suwas S. , Ghosh A. , Ravishankar N. , Raghavan S. By J. Phys. Chem. C 119 2513- (2015)
• Fermi-Edge Transmission Resonance in Graphene Driven by a Single Coulomb Impurity Karnatak P., Goswami S. , Kochat V. , Pal A. N., Ghosh A. By Physical Review Letters 113 026601- (2014)
• Direct observation of valley-hybridization and universal symmetry of graphene with mesoscopic conductance fluctuations Pal A. N., Kochat V. , Ghosh A. By Physical Review Letters 109 196601- (2012)
• Microscopic mechanism of 1/f noise in graphene: Role of energy band dispersion Pal A. N., Ghatak S. , Kochat V. , S S. E., S A. B., Raghavan S. , Ghosh A. By ACS Nano 5 2075-2081 (2011)
• High contrast imaging and thickness determination of graphene with in-column secondary electron microscopy Kochat V., Pal A. N., S S. E., Sampathkumar A. , Gairola A. , A S. S., Raghavan S. , Ghosh A. By J. Appl. Phys. 110 014315- (2011)

Principal Investigator

• 2D Van Der Waals Heterostructures for Spintronics
• Smart 2D Quantum Devices from Van der Waals Engineering of Layered Materials