Assistant Professor

Dr. Siddhartha Ghosh

Department of Physics

Interests

  1. Novel Physics at exotic interfaces grown by pulsed laser deposition (PLD)
  2. Wettability studies of metal-oxide thin-film surfaces
  3. Nano-magnetism in transition metal oxides (TMO) and metal-organic frameworks (MOF)

Education

2003

University of Calcutta
India
Bachelors

2005

IIT Kanpur
India
Masters

2012

University of Florida
USA
Ph.D.

Experience

  • March 2013 to May 2019, Research Fellow | NUSNNI under National University of Singapore (NUS), Singapore.
  • Jan 2010 to Jan 2013, Graduate Research Assistant | Department of Florida at University of Florida, USA.
  • Aug 2006 to Dec 2009, Graduate Teaching Assistant | Department of Florida at University of Florida, USA.

Research Interest

Growth of thin-film and hetero-structure:
  • Growth of ferro-magnetic/ferro-electric/multiferroic metal oxide thin-films and hetero-structures.
  • Growth & study of opto-electronic properties of Graphene/Graphene Oxide (GO) & reduced Graphene Oxide (rGO) thin-films using CVD & PLD.
  • Growth of 2D-TMDC & 2D-TMDC/Metal Oxide hetero-structures using CVD & PLD.
Wettability studies of metal-oxide thin-films:
  • Systematic study of water contact angle (WCA) of of PLD grown epitaxial R2O3 (R = Lu, Sm, Tm, Tb etc.) thin-films and the temporal evolution of the WCA.
  • Study of correlation of nano-scale WCA to micro WCA using novel f-d curve
  • Study Of biological interaction of PLD grown epitaxial R2O3 thin-films with human osteoblast and fibroblast cells.
  • Study on the effect of Oxygen vacancy on the WCA of transition metal based [i.e. – SrTiO3, LaAlO3) and rare-earth based [i.e. - R2O3 (R = Lu, Sm, Tm, Tb etc.)] oxides.
Study of magnetism in novel nano-structures:
  • Novel soft-ferromagnetism in transition metal based metal-organic systems like Me(X)n. [(Me = Ru, Co, Fe, Pt, Pd etc.); (X=PAP; PCP etc.); (n=2,3,4 etc.)].
  • Study of Quantum Correction in Disordered antiferromagnet (Cr & Mn).
  • Ferromagnetic behavior in magnetic Quantum Dot (MQD) like FeCeTeS.
  • Role of interface in ferromagnetic, magneto-trasport and ferroelectric properties of perovskite and double perovskite (DP) super lattice structure.
Optical studies of Rare-earth based perovskites:
  • Growth & Study of Ce doped NdGaO3 thin-films to realize the concept of super-hydrogenic dopant.
  • Study of sharp Photoluminescence lines of various common oxide substrates including (but not limited to) LaAlO3, SrTiO3, DyScO3, NdGaO3, NdAlO3

Awards & Fellowships

  • 2019 – Long Service Award (LSA) – National University of Singapore (NUS).
  • 2017 - Invited speaker - Collaborative Conference on Materials Research (CCMR).
  • 2016 - Nomination for best poster award - Materials Research Society (MRS).
  • 2006 – Graduate Research Fellowship – College of Liberal Arts & Sciences (CLAS), University of Florida, USA.
  • 2003 - Certificate of Merit & Gold Medal - Indian Association of Physics Teachers (I.A.P.T.).

Memberships

  • Member of American Physical Society (APS): 2008-Present
  • Member of Material Res. Society of Singapore (MRS-S) : 2013-Present

Publications

  • Intrinsic Hydrophilic Nature of Epitaxial Thin-film of Rare-earth Oxide Grown by Pulsed Laser Deposition - S. Prakash, S. Ghosh*, A. Patra, M. Annamalai, M. R. Motapothula, S. Sarkar, Sherman J.R. Tan, Jia Zhunan, Kiang Ping Loh, T. Venkatesan - Nanoscale, 10, 3356 – 3361 (2018)
  • Robust Resistive Memory Devices Using Solution-Processable Metal-Coordinated Azo-aromatics - S. Goswami, A. J. Matula, S. P. Rath, S. Hedstrom, S. Saha, M. Annamalai, D. Sengupta, A. Patra, S. Ghosh, H. Jani, S. Sarkar, M. R. Motapothula, C. A. Nijhuis, J. Martin, S. Goswami, V. S. Batista, T. Venkatesan - Nature Materials 16, 1216–1224 (2017)
  • Enhancement of ferromagnetism in BaFeO3-KTa0.47Nb0.53O3 multilayers compared to pseudo-cubic BaFeO3 thin film grown by pulsed laser deposition - J. Cianfrone, S.Ghosh*, S. Kim, K.W.Kim, A.F.Hebard, D. Norton; Phys. Status Solidi A 1600707 (2017).
  • The effect of oxygen vacancies on water wettability of transition metal based SrTiO3 and rare-earth based Lu2O3 - T. Sarkar, S. Ghosh, M. Annamalai, A. Patra, K. Stoerzinger, Y. L. Lee, S. Prakash, M. R. Motapothula, Y. S. Horn, L. Giordano, T. Venkatesan -RSC Advances 6, 109234 (2016).
  • Origin and Quenching of Novel ultraviolet and blue emission in NdGaO3: Concept of Super-Hydrogenic Dopants - S. Ghosh*, S. Saha, Z. Q. Liu, M. Motapothula, A. Patra, N. Yakovlev, Y. Cai, S. Prakash, X. H. Huang, C. B. Tay, C. X. Cong, T. Bhatt, S. B. Dolmanan, J. Q. Chen, W. M. Lü, Z. Huang, S. Tripathy, S. J. Chua, T. Yu, M. Asta, A. Ariando, T. Venkatesan - Scientific Reports 6, 36352 (2016).
  • Correlation of nanoscale behaviour of forces and macroscale surface wettability - A. Rana, A. Patra, M. Annamalai, A. Srivastava, S. Ghosh, K. Stoerzinger, Y. L. Lee, S. Prakash, R. Y. Jueyuan, P. S. Goohpattader, N. Satyanarayan, K. Gopinadhan, M. M. Dykas, K. Poddar, S. Saha, T. Sarkar, B. Kumar, C. S. Bhatia, L. Giordano, Y. S. Horn, T. Venkatesan - Nanoscale, 8, 15597-15603 (2016).
  • Superlattice periodicity and magnetic properties of Ba2FeMoO6/Ba0.5Sr0.5TiO3 system - K.W.Kim, S.Ghosh*, S.V.Buvaev, A.F.Hebard, D. Norton - Journal of Applied Physics 119, 215303 (2016).
  • Strain induced enhancement of magnetization In Ba2FeMoO6 based heterostructure with (BaxSr1-x)TiO3 - K.W.Kim, S.Ghosh*, S.V.Buvaev, A.F.Hebard, D. Norton - Journal of Applied Physics 119, 185304 (2016).
  • The effects of oxygen pressure on disordering and magneto-transport properties of Ba2FeMoO6 thin films grown via pulsed laser deposition - K. W. Kim, S. Ghosh*, S. Buvaev, S. Mhin, J. L. Jones, A. F. Hebard, D. P. Norton - Journal of Applied Physics 118, 033903 (2015).
  • Transport measurements of the spin-wave parameters of thin Mn films - S. Buvaev, S. Ghosh, K. Muttalib, P. Wölfle, A. Hebard - Physical Review B 90, 214429 (2014).
  • Ferromagnetism in Stacked Bilayers of Pd/C60 - S. Ghosh, S. Tongay, A. F. Hebard, H. Sahin, F. M. Peeters - Journal of Magnetism and Magnetic Materials 349, 128-134 (2014).
  • Fe doped CdTeS magnetic quantum dots for bioimaging - A. K. Saha, P. Sharma, H. B. Sohn, S. Ghosh, R. K. Das, A. F. Hebard, H. Zeng, C. Baligand, G. A. Walter, B. M. Moudgil - Journal of Materials Chemistry B 1, 6312 (2013).
  • Magnetic and magnetotransport properties of Ba2FeMoO6 pulsed laser deposited thin films - K.W.Kim, S.Ghosh, S.V.Buvaev, S.Mhin, J. Jones, A.F.Hebard, D. Norton - Journal of Applied Physics 112, 083923 (2012).
  • Block Copolymer-Mediated Formation of Superparamagnetic Nanocomposites - S. Biswas, K. D. Belfield, R. Das, S. Ghosh, A. F. Hebard - Chemistry of Materials 21, 5644-5653 (2009).
Book Chapter:
  • “Wetting at Macro and Nanoscale” – M. Annamalai, S. Prakash, S. Ghosh, A. Patra, T. Venkatesan - Advances in Contact Angle, Wettability and Adhesion, Volume 4 (Editor – K. L. Mittal), Wiley Publisher (2019).

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