top of page
photo_2021-05-18_17-52-30.jpg

Dr. N V R VIKRAM GELLI

Asst. Professor, Dept. of ECE

Vignan_logo.png

Vignan’s Foundation for Science, Technology and Research

Professional Overview

Dedicated Assistant Professor focused on research and teaching with professional experience of 7+ years. Striving for excellence in multidisciplinary research and teaching. Inclined towards developing new courses and activities to expand learning opportunities and in disbursing conceptual knowledge to the students, through the development of new technologies.

Research Interests

  • Thin films, MEMS, Nanotechnology, Nano-mechanics

  • Embedded systems, Scientific Instrumentation

  • Artificial Intelligence, Machine learning

gnvrvikram@gmail.com

+919482840480

Vadlamudi, Guntur, Andhra Pradesh, India-560064

Education

Ph.D., Mechanical Engineering, Center for Nano Science and Engineering (2008-2016)

Indian Institute of Science, Bangalore

Thesis Title: Influence of contact stresses on shape recovery in sputter-deposited NiTiCu thin films

Advisors: Prof. M. S. Bobji (Department of Mechanical Engineering (ME)), Prof. S. Mohan (Instrumentation (IN)/Center for Nano Science and Engineering (CeNSE))

M. Tech, Nanotechnology (2006-2008)

Andhra University College of Engineering (A) (AUCE (A)), Visakhapatnam

Project: CeO2 Thin Films as High-K Gate Dielectrics for VLSI Applications

B. Tech, Electronics and Communication Engineering (2002-2006)

Sasi Institute of Technology and Engineering (affiliated to J.N.T.U), Tadepalligudem

Project: Pick and Place Robot

Education
Experience

Teaching Experience (5Y-5M, 4Y 10M – Post-Ph.D.)

Asst. Professor, Department of Electronics and Communication Engineering

Vignan University, Vadlamudi, Guntur (July 2017 – till date)

Asst. Professor, Department of Electronics and Communication Engineering,

Nitte Meenakshi Institute of Technology, Bangalore (January 2016 – June 2017)

Subjects taught

  • MEMS for UG and PG, Entrepreneurship and IPR, Digital Electronics, Embedded systems, Automotive electronics, Multimedia communication, Embedded Systems & RTOS, Microcontrollers for Embedded Systems, Embedded System Design using FPGA

Students’ guidance and training (Broad areas)

  • Thin films, Tree climbing robot, Coconut harvesting robot, Embedded Systems, Instrumentation, MEMS

Research

Research Experience (12Y 6M– total, 7Y 6M - other than Ph.D.,
4Y 7M– post-Ph.D.)

code.png

Academic researcher (2016-till date)

  • Design, development of tree climbing robot

  • Deposition and characterization of Pulsed DC sputtered thin films (NiTi, TiN)

  • Fabrication and characterization of MEMS devices using thin films

  • Design and development of low-cost temperature-dependent four-probe resistivity measurement system

  • Funded through TEQIP-seed money

  • Design and development of high voltage amplifier for piezo driver applications

Ph.D. Guidance

  • Mohammad Taj – MEMS (2Y 1M, 1-Journal (submitted), 1-Conference)

  • Kota Rahim Reddy – Video analytics (Part-time, Literature survey)

  • M. Deepti – Application of deep learning algorithms for medical image processing (Part-time, just joined)

Senior Research fellow (RBCCPS) (2013-2015)

  • Development of simulation environment with active feedback for epidural procedures

  • Development and testing of electronics for the feedback and control

  • Development of a physics-based model for the tissue needle interaction using OpenGL and haptics

  • Design and development of high voltage amplifier

Research student (2008-2013)

  • Design, installation, and complete diagnosis of vacuum system using a residual gas analyzer

  • Deposition of thin films (NiTiCu) using sputtering from elemental, mosaic target systems

  • Fabrication of samples and structures using Focused Ion Beam(FIB) for transmission electron microscope (TEM) analysis and cross-sectional analysis(trained at Sheffield University, UK and CeNSE, IISc, Bangalore)

  • Study of mechanical properties of thin films using nanoindentation and analysis using atomic force microscope (AFM), scanning electron microscope (SEM) micrographs of the indents to correlate the structure and properties

  • Shape recovery properties of NiTiCu thin films after heating were evaluated by correlating the AFM and SEM micrographs of the nanoindenter, which were relocated precisely, before and after heating the thin films for shape recovery

  • Analysis of AFM and SEM micrographs of the nanoindenter was carried out using MATLAB to obtain the amount of shape recovery

  • Development of experimental setup for electric contact resistance (ECR) measurement at low loads

  • Characterization of ECR of thin films at various loads applied using a conductive diamond tip

M.Tech. (2006-2008), AUCE (A)

  • Electrical characterization of thin films for VLSI applications (carried out at IISc)

  • Fabrication of nanomaterials using ball milling

  • The corrosion resistance of aluminum alloys

Journals

code.png

Published

Sudipta Dutta, N V R Vikram Gelli, M S Bobji, Tabletop experimental setup for electrical contact resistance measurement during indentation, Measurement (ISSN 0263-2241), 1‑Feb‑2020, 152, 107286, (Impact factor 3.364), DOI: 10.1016/j.measurement.2019.107286

Vemuri Raghavendra, B Suryanarayana, K Chandra Mouli, P. V Achary, G. N. V. R Vikram, N Murali, Dielectric and Piezoelectric Properties of Sm3+ rare-earth ion-doped lead barium niobate (PBN) ceramics, Physica B: Condensed Matter (ISSN 0921-4526), 1‑Mar‑2019, 556, 75-81, (Impact factor 1.902), DOI: 10.1016/j.physb.2018.11.066

Jithin M A, Lakshmi Ganapathi Kolla, N V R Vikram Gelli, N K Udayashankar, S Mohan, Deposition and characterization of Titanium nitride thin films using pulsed dc magnetron sputtering for localized heat application in MEMS devices, Sensors & Actuators: A. Physical (ISSN 0924-4247), 1-Apr-2018, 272, 199-205, (Impact factor 2.904), DOI: 10.1016/j.sna.2017.12.066

N. V. R. Vikram Gelli, M. S. Bobji, and S. Mohan. Effect of contact stresses on shape recovery of NiTiCu thin films. Thin Solid Films (ISSN 0040-6090), 1-Aug- 2014,  564(0), 306–313, (Impact factor 2.03), DOI: 10.1016/j.tsf.2014.04.088

Patents Granted

Mandava Ravi Kumar, Nandure Narayana Rao, G N V R Vikram, A novel climbing mechanism for coconut tree,  Patent granted by IP Australia, on 09-06-2021

In Processing

 Mohammad Taj, NVR Vikram G, Nithya G, Veda Sandeep Nagaraja, DESIGN, SIMULATION and ANALYSIS OF MEMS BASED MULTI-DIRECTIONAL INERTIAL SENSOR (Accepted)

M.Deepthi, G.N.V.R.Vikram, Venkatappareddy, A Chebyshev Polynomial Based Activation Function In CNN Model For Classification (Communicated)

N. V. R. Vikram Gelli, Prasanth Pendyala, Mathematical analysis of Surface characteristics of NiTiCu thin films,

N. V. R. Vikram G, Low cost temperature-dependent resistivity measurement system (Patent Applied)

N. V. R. Vikram Gelli, M. S. Bobji, and S. Mohan, Effect of nodular growth on the mechanical properties of NiTiCu thin films

N V R Vikram Gelli, Jithin M A, N K Udayashankar, S Mohan, Correlation of structural and mechanical DC & PDC deposition of NiTi thin films

Conferences/Symposium Proceedings

G N V R Vikram, M A Jithin, S Mohan, and M.S. Bobji, Development of temperature dependent resistivity measurement system, INCAM 2019 Conference, 3-5 July 2019, IISc Bangalore

Mohammad Taj, N V R Vikram G, A review on MEMS-Based Energy Harvesters for IoT Applications, International Journal of Recent Technology and Engineering, 2019, 7, 554,433-436, (B Impact factor 5.92)

Design and Simulation of Mems Based Multi-Directional Inertial Sensor, Mohammad Taj, Dr. N. V. R. Vikram G (corresponding author), Dr. Veda Sandeep Nagaraja, ISSS National Conference on MEMS, Smart Materials, Structures and Systems, October 4-6, 2018, Madurai

Vemuri Raghavendra, B. Suryanarayana, K. Chandra Mouli, P V Achary, G N V R Vikram, Synthesis, Structural and Dielectric Studies of PBN Ceramics, A.P Science Congress-2017, November 7-11, 2017 Visakhapatnam.

Nodular Growth and their Influence on the Hardness of Sputter Deposited NiTiCu Thin Films: N. V. R. Vikram G., M.S. Bobji and S. Mohan, Nanoyantrika 2015, September 20-22, 2015, Trivandrum.

Mosaic Target Co-sputtering System for Deposition of SMA Films;H.S. Vijaya, Jithin M.A., N. V. R. Vikram G., Sudhir Kumar Sharma and S. Mohan; National Symposium on Instrumentation (NSI-35) at VTU Belgaun, January 7-9, 2011. SL Number 91.

Sudhir Kumar Sharma, N.V.R. Vikram G., Kunal Bose., M.S. Bobji and S. Mohan; Sputter Deposited Ti-Rich NiTi Shape Memory Alloy Thin Films: Variation of Hardness with Deposition and Annealing Temperature; Nanomeasure 2010 at Krakow, Poland, 2010, PP-47, Jun 03- 04,.

References

Prof. M. S. Bobji

Professor,

Department of Mechanical engineering

Indian Institute of Science, Bangalore, India

E-mail: bobji@mecheng.iisc.ac.in,

Phone: (O) +91-80-22933233 (M) +91-9886106433

Prof. S. Mohan

Visiting Professor

Centre for Nano Science and Engineering

(Former: Professor, Dept. of Instrumentation & Applied Physics)

Indian Institute of Science, Bangalore, India

E-mail: smohan46@yahoo.co.in

Phone: +91-80-23601143 (M) +91-9845451270

Prof. Kotipalli Srinivasa Rao

Professor

Department of Metallurgical Engineering

Andhra University College of Engineering (A)

Visakhapatnam – 530003

E-mail: arunaraok@yahoo.com, arunaraok@gmail.com

Phone: (O) +91-891-2844971 / 65 (M) +91-9866596714

Journals
Conferences
References
bottom of page