Sankar Dhar | Department of Physics

Profile

Sankar
Dhar
Professor and Head
Department of Physics
School of Natural Sciences (SoNS)
A021
Block-A, Shiv Nadar University
Gautam Buddha Nagar Uttar Pradesh
India
+91 8750464017
Extn: 
804
Profile Summary 

Professor Sankar Dhar has joined Physics department of SNU in 2012. He obtained his Ph.D. degree in Physics from I.I.T. Kanpur in 1997 and master degree in physics from Jadavpur University in 1989. After receiving DST young scientist award in 1997, he joined as a post-doctoral fellow and later (1998-2003) worked as a scientist and group leader of the ion beam based materials research program in II. Physics Institute at the University of Göttingen, Germany. Later in 2003, he joined as a leader of ion beam based materials research program of the Accelerator center at the University of Maryland, College Park, USA. Prior to joining SNU, Prof. Dhar worked in the National university of Singapore (NUS) from 2007 as a senior scientist for building and developing the NUSNNI-NanoCore, an integrated new nano-materials research center. He is enthusiastic about teaching and his general research interests include the growth of functional thin films/nano-materials and manipulating their structural, electronic, magnetic, and optical properties using pulsed laser and ion beam. He has filed several patents and published over 120 articles in referred international journals and books.

Educational Qualifications 
1997
Ph.D. in Physics
I.I.T. Kanpur
1989
M.Sc. in Physics
Jadavpur University
Work Experience 
2012
Professor and Head
Department of Physics, Shiv Nadar University
India
I currently work here
20072012
Senior Research Scientist,
NUSNNI-NanoCore, National university of Singapore
Singapore
20032007
Senior Scientist & Program Leader
NSF Accelerator center, University of Maryland,
College Park, USA
19982003
Research Scientist
II. Physics Institute, University of Göttingen
Germany
19981999
Post-doctoral Fellow
II. Physics Institute, University of Göttingen
Germany
Teaching & Research Interests: 

Research Interest

My primary interest is on the functional oxide materials at sub-500 nm thickness range, where fascinating science has manifested over the last decade. New oxide materials with exotic properties and functions for the next generation electronic devices are being explored by growing thin epitaxial 2D/3D films, nano-materials, and hetero-structures using pulsed laser, pulsed electron and sputter deposition and ion implantation of surfaces. I am currently focused on transparent oxide layers, homo/hetero junction, bandgap engineering, 2D layer-oxide interactions, strain engineering at sharp atomic interfaces, defect induced ferromagnetism and resistive switching. Moreover, I use energetic ion beam for material characterizations and modifications via impurity doping, atomic mixing, alloying, nano-structuring, and solid state catalysis processes.search Interest

Teaching Courses

  • Characterization of Materials
  • Introduction to Thin Films
  • Exploration in Research
  • Introduction to Physics I
  • Introduction to Physics II
  • Fundamentals of Physics I
  • Fundamentals of Physics II

 

Conferences (Select): 
  • “Novel functional oxides by tailoring cations and anion” at the international workshop on the “Recent Trends in Condensed Matter Physics" at IACS, Kolkata from 16-17January 2018 (Invited Speaker).
  • “Novel ferromagnetic oxides by tailoring defects” at the62nd DAE-Solid State Physics” Symposium at Bhabha Atomic Research Centre (BARC), Mumbai, India from December 26-29, 2017 (Invited Speaker).
  • “Tailoring New Materials and Devices” at the 8th International USPEX Workshop at Shiv Nadar University from January 20-24, 2015 (Invited Speaker).
  • “Tailoring Low-dimensional Exotic Materials” at the International conference on the “Current trend in Condensed Matter Physics” NEISER, Bhubaneswar 2015 (Invited Speaker).
  • “Novel Oxide Thin Films by Doping and Alloying” at the International Conference on “Emerging Materials: Characterization & Application” December 4-6, 2014 at CGCRI, Kolkata, 2014 (Invited Speaker).
  • “Synthesis of novel functional oxides by tailoring defects” at the 3rd international conference on Advanced Nanomaterials (ANM 2012) at IIT Madras from October 17-19, 2012 (Invited Speaker).
Awards(Selected): 
  • Invited for a panel discussion on the “Future of Ion beam research” at the international Conference on “Nanostructures by Ion Beam (ICNIB 2017)” at Devi Ahilya Vishwavidyaalya, Indore, INDIA  from October 11-13, 2017 (Invited Speaker).
  • Invited talk at the international workshop on the  “Recent Trends in Condensed Matter Physics" at IACS, Kolkata from 16-17January 2018.
  • Invited for a panel discussion on the “Future of Ion beam research” at the international Conference on “Nanostructures by Ion Beam (ICNIB 2017)” at Devi Ahilya Vishwavidyaalya, Indore, INDIA  from October 11-13, 2017.
  • Invited talk at the62nd DAE-Solid State Physics” Symposium at Bhabha Atomic Research Centre (BARC), Mumbai, India from December 26-29, 2017
  • Invited talk at the 8th International USPEX Workshop at Shiv Nadar University from January 20-24, 2015.
  • Invited talk at the International conference on the “Current trend in Condensed Matter Physics” NEISER, Bhubaneswar 2015.
  • Invited in the 12 International Surface Paints and Coating Symposium at Greater Noida on 7-9 Oct, 2015.
  • Invited talk at the International Conference on “Emerging Materials: Characterization & Application” December 4-6, 2014 at CGCRI, Kolkata, 2014.
  • Invited talk at the 3rd international conference on Advanced Nanomaterials (ANM 2012) at IIT Madras from October 17-19, 2012.
  • Invited talk at the IUAC -AU symposium “Nano-structuring by ion beam”, Allahabad, India 2011.
  • Invited talk in int. conf.  “Advanced Nano-materials & Nanotech”, IIT Guwahati, India 2011.
  • DST young scientist award 1997.
  • UGC-CSIR fellowship 1991.
  • GATE 1990.
  • UGC-CSIR national award for university lecturer 1989.

Scholarly Activity

Journal Publications (accepted or published)

2018

Resistive Switching Behavior in Oxygen Ion Irradiated TiO2-x Films- A. Barman, C. P. Saini, P. Sarkar, G. Bhattacharjee, G. Bhattacharya, S. Srivastava, B, Satpati, D. Kanjilal, S. Ghosh, S. Dhar, A. Kanjilal J. Phys. D: Appl. Phys. 51, 065306 (2018).

2017

Nanoscale evidence of self-recovery of resistive switching in TiO2 films- A. Barman, C. P. Saini, D. Das, S. Dhar, M. Singh, A. K. Sinha, D. Kanjilal, M. Gupta, D. Phase, A. Kanjilal, J. Phys. D: Appl. Phys. 50, 475304 (2017).

2016

Probing electron density across Ar+ irradiation-induced self-organized TiO2-x nanochannels for memory application” A. Barman, C.P. Saini, P. Sarkar, A. Roy, B. Satpati, D. Kanjilal, S. K. Ghosh, S. Dhar, A. Kanjilal, Appl. Phys. Lett. 108, 244104 (2016)

2015

Resistive switching in self-organized titanium oxide nano-channels-- A. Barman, C.P. Saini, P. Sarkar, B. Satpati, D. Kabiraj, D. Kanjilal, S. Dhar, A. Kanjilal, J. Appl. Phys. 118, 224903 (2015).

2015

Unexpected observation of spatially separated Kondo scattering and ferromagnetism in Ta alloyed anatase TiO2 thin films”-- T. P. Sarkar, K. Gopinadhan, M. Motapothula, S. Saha, Z. Huang, S. Dhar, A. Patra, W. M. Lu, F. Telesio Pallecchi, Ariando, D. Marré & T. Venkatesan, Nature Scientific Reports 5, 13011 (2015). 

2015

Effect of Nb and Ta substitution on donor electron transport and ultrafast carrier dynamics in anatase TiO2 thin-- Kalon Gopinadhan, Brijesh Kumar, Natalie Palina, M. Motapathula, I. Pallecchi, T. P. Sarkar, Y. Zhihua, J. Q. Chen, A. Annadi, A. Rana, Amar Srivastava, D. Marré, Jingsheng Chen, Ariando, S. Dhar, A. Rusydi and T. Venkatesan, J. Mater. Chem. C 3, 6329 (2015).

2013

Anisotropic two dimensional electron gas at the LaAlO3/SrTiO3 (110) interface - A. Annadi, Q. Zhang, X. Renshaw Wang, N. Tuzla, K. Gopinadhan, W.M. Lu, A. Roy Barman, Z.Q. Liu, A. Srivastava, S. Saha, Y.L. Zhao, S.W. Zheng, S. Dhar, E. Olsson, B. Gu, S. Yunoki, S. Maekawa, H. Hilgenkamp, T. Venkatesan, Ariando, Nature Commun. 4, 1838 (1013) (Selected as Science Magazine Editors' Choice: Jelena Stajic, Unexpected Conductivity, Science 14 June 2013: Vol. 340 no. 6138 p. 1267)

2013

Reversible room-temperature ferromagnetism in Nb-doped SrTiO3 single crystals - Z.Q. Liu, W.M. Lu, S.L. Lim, J.B. Yi, M. Yang, S. Dhar, T. Venkatesan, Ariando, Phys. Rev. - Rapid Communication B87, 220405 (2013).

2012

Electronic correlation and strain effects at the interfaces between polar and nonpolar complex oxides- A. Annadi, A. Putra, Z. Q. Liu, X. Wang, K. Gopinadhan, Z. Huang, S. Dhar, T. Venkatesan, and Ariando, Phys. Rev. B 86, 085450 (2012).