Varrla.jpg

Dr. Varrla Eswaraiah

Ph.D

Research Assistant Professor

Welcome to the Laboratory of Nanomaterials Dispersions and Devices (LND2). Our Lab focus is to develop scalable, sustainable production methods and processing techniques for nanomaterials with an emphasis to develop novel, energy efficient and cost-effective approaches for fundamentally and commercially useful low dimensional materials such as two-dimensional materials (Graphene, Transition Metal Dichalcogenides, black phosphorus), 1D/3D nanomaterials and their hybrids for a variety of applications. Our specific target is to achieve property enhancement and devices made from dispersions for a plethora of applications. We do an extensive study in production and characterization of exfoliated graphene and other 2D materials for estimating the quality of the nanosheets produced and their physical properties. 

Dr. Varrla Eswaraiah joined SRM Research Institute and Department of Physics and Nanotechnology as an Assistant Professor of Research in SRM University, Kattankulathur campus since August 2017. We develop energy efficient production and innovative processing techniques for low-dimensional materials especially 2D materials which find applications in sensing, printed electronics, composites, thermal and electronics applications. We have contributed key findings in graphene production and processing techniques in this emerging area of research and co-inventor of three inventions in the area of graphene and strain sensor nanocomposites. His current interest is in high yield production in 2D materials and design of devices using low dimensional materials for thermal and other applications. 

Research Expertise

  • Defect and defect-free graphene
  • Nanosheets of Transition metal dichalcogenides based semiconductors (MoS2, WS2 etc.)
  • Low dimensional materials
  • Liquid Phase Exfoliation of bulk layered materials
  • Suspensions and Rheological behavior
  • Scalable manufacturing of 2D materials
  • Efficient processing methodologies for nanomaterials
  • Sensors and Energy generation devices
  • Polymer nanocomposites and electrical percolation

 

 

 

  • Thermistors
  • Thin films and Devices
  • Liquid phase exfoliation
  • Sustainable and Scalable manufacturing
  • Novel techniques for characterization
  • 2D materials and Interfaces
  • Printed electronics
  • Piezo-resistive Sensors
  • Property enhancement

Group leader: Dr. Varrla Eswaraiah

Education

  • B.Sc. from Sri Ramakrishna Degree College, Nandyal   2002-2005
  • M.Sc. Physics from Sri Venkateswara University, Tirupati   2005-2007
  • Ph.D. Physics from Indian Institute of Technology Madras, Chennai  2007-2012

Experience

  • Aug 2017 – Present Research Assistant Professor in SRM Research Institute, SRM University, Department of Physics and Nanotechnology, Kattankulathur Campus.
  • Feb 2015 – July 2017 Research Fellow in School of Materials Science and Engineering, Nanyang Technological University, Singapore.
  • July 2012 – Dec 2014 Postdoc researcher in School of Physics and CRANN, Trinity College Dublin, Ireland.

Ph.D. students: None at this time

Research Assistants: None at this time

FYP Students: None at this time

Projects are available for Final Year students (B.Tech., M.Tech., B.Sc. and M.Sc.) and prospective candidates for Ph.D can contact the group leader.

  • Total number of published and granted patents: 3
  • Total number of published articles: 18
  • Total number of national and International conference presentations: 18
  • Total number of citations: 1554
  • h-index:12

Source: Google scholar, 19th August 2017

  • Subas Kumar Muduli, Varrla Eswaraiah et al. Black phosphorus nanosheets and nanoparticles for energy conversion and charge transfer applications, 2017 (Under revision, Journal of power sources and Journal of Materials Chemistry), TA-ART-06-2017-004889, POWER-D-17-03291. 

  • Juanjuan Liu, R Govindan Kutty, Qingshen Zheng, Varrla Eswaraiah, Sivaramapanicker Sreejith, Zheng Liu, Hexagonal Boron Nitride Nanosheets as High-performance Binder-Free Fire-Resistant Wood Coatings, Small, 2017, 13, doi: 10.1002/smll.201602456 (Impact factor 8.535).

  • Varrla Eswaraiah, Qingsheng Zeng, Long Yi and Zheng Liu, Black Phosphorus Nano-sheets: Synthesis, Characterization and Applications, Small, 2016, 12, 3480-3502 (Impact factor 8.535).
  • Jian-Yao Zheng, Hongjun Xu Jing Jing Wang, Sinéad Winters, Carlo Motta, Weigang Zhu, Toby Hallam, Varrla Eswaraiah, Georg Duesberg, Stefano Sanvito,Wenping Hu, and John F. Donegan, Vertical Single-Crystalline Organic Nano-wires on Graphene: Solution-Phase Epitaxy and Optical Microcavities, Nano letters,16, 4754–4762, 2016 (Impact factor: 13.592).
  • Varrla Eswaraiah, Backes Claudia, Paton Keith, Harvey Andrew, Gholamvand Zahra, McCauley Joe, Coleman Jonathan, Large scale production of size controlled MoS2 nanosheets by shear exfolaition, Chemistry of Materials, 27, 1129-1139, 2015 (Impact factor 9.466).
  • Paton, K. R.; Varrla, Eswaraiah.; Backes, C.; Coleman, J. N. et al., Scalable production of large quantities of defect-free, few-layer graphene, Nature Materials, 13, 624–630, 2014 (Impact factor ~40).
  • Varrla Eswaraiah, Keith R Paton, Claudia Backes, Andrew Harvey, Ronan Smith, Joe McCauley and Jonathan N Coleman, Turbulence-assisted shear exfoliation of graphene using household detergent and a kitchen blender,Nanoscale, 6, 11810-11819, 2014 (Impact factor: 7.760).
  • Varrla Eswaraiah, S.S. Jyothirmayee Aravind, Krishnan Balasubramaniam, Sundara Ramaprabhu, Graphene-Functionalized Carbon Nanotubes for Conducting Polymer Nanocomposites and Their Improved Strain Sensing Properties, Macromolecular Chemistry and Physics, 214, 2439-2444, 2013 (Impact factor: 2.616).
  • Varrla Eswaraiah, Krishnan Balasubramaniam and S. Ramaprabhu, one-pot synthesis of conducting graphene polymer composites and its electromechanical application, Nanoscale,4, 1258-1262, 2012 (Impact factor: 7.760).
  • Varrla Eswaraiah, Krishnan Balasubramaniam and Sundara Ramaprabhu, Functionalized graphene reinforced thermoplastic nanocomposites as strain sensors in structural health monitoring, Journal of Materials Chemistry, 21, 12626-12628, 2011.
  • Varrla Eswaraiah, S.S. Jyothirmayee Aravind and S. Ramaprabhu, Top down method for Synthesis of Highly Conducting Graphene by Exfoliation of Graphite Oxide using Focused Solar Radiation, Journal of Materials Chemistry, 21, 6800-6803, 2011.
  • Varrla Eswaraiah, V. Sankaranarayanan and S. Ramaprabhu, Graphene based engine oil nanofluids for tribological applications, ACS applied materials and interfaces, 3, 4221–4227, 2011 (Impact factor: 7.504)
  • Varrla Eswaraiah, V. Sankaranarayanan and S. Ramaprabhu, Functionalized Graphene-PVDF foam composites for EMI shielding, Macromolecular Materials and Engineering, 296, 894–898, 2011 (Impact factor: 2.781).
  • Varrla Eswaraiah, V. Sankaranarayanan and S. Ramaprabhu, Inorganic nanotubes reinforced polyvinylidene fluoride composites as low-cost electromagnetic interference shielding materials, Nanoscale Research Letters, 6, 137, 2011.

Patents

  • S. Ramaprabhu,Varrla Eswaraiah and S.S. Jyothirmayee Aravind, Production of graphene using electromagnetic radiation, Publication No: US 8828193 B2, Application No: US 13/226,321, filed on Sep 6, 2011, Publication on Sep 9, 2014, http://www.google.com/patents/US20130056346. Granted.
  • S. Ramaprabhu, Varrla Eswaraiah, S.S. Jyothirmayee Aravind and Krishnan Balasubramanian, Graphene Functionalized Carbon Nanotube Polymer Composites and Methods for their Preparation and Use, Filed on Jan 8, 2013, US patent application, PCT/IB2013/050144. (https://www.google.com/patents/WO2013190398A1).
  • S. Ramaprabhu, Varrla Eswaraiah, S.S. Jyothirmayee Aravind and, Graphene composites with dispersed metal or metal oxide, US Patent application, 13/956,807. www.google.com/patents/US20140054490.

Book Chapters

  • Rupali Nagar, Varrla Eswaraiah, Bhaghavathi P. Vinayan, Chapter 12: Conjugated polymer and nanocrystal nanocomposites for photocatalytic hydrogen production and organic contaminants degradation (Book Name: Multi-Functional Photocatalytic Materials for Energy, ELSEVIER, Production stage, 2017.

Course name: Materials Science (B. Tech 1st Year)
Course code: 15PY102L (Theory and Lab)

Opportunities:

  • Interested candidates can email group leader by mentioning the candidate’s research interests in a cover letter along with his/her CV.
  • You are most welcome to join my group through SRM Fellowship, INSPIRE fellowship and any other fellowships.
  • Keep follow us in knowing more updates on positions for project assistants and Ph.D positions.

Contact
Dr. V. Eswaraiah
Research Assistant Professor
SRM Research Institute
Department of Physics & Nanotechnology
709/A, 7th floor, Central library building,
SRM University, Kattankulathur 603203,
Kanchipuram district, Tamil Nadu, India.
Email: eswaraiahvarrla.l@ktr.srmuniv.ac.in