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Nikhil Chopra

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 34 2786 2612 967 854 146 6638

Nikhil Chopra publications per year

The chart shows the history of publications by Nikhil Chopra between 2003 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Nikhil Chopra published across 23 years, from 2003 to 2025, averaging 8.7 papers a year. Output peaked at 17 publications in 2015. 18 of the 201 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 2003 to 2025. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2015. 2003: 1 publication 2004: 5 publications 2005: 2 publications 2006: 6 publications 2007: 4 publications 2008: 9 publications 2009: 4 publications 2010: 6 publications 2011: 9 publications 2012: 13 publications 2013: 14 publications 2014: 7 publications 2015: 17 publications 2016: 6 publications 2017: 12 publications 2018: 14 publications 2019: 10 publications 2020: 9 publications 2021: 10 publications 2022: 14 publications 2023: 11 publications 2024: 11 publications 2025: 7 publications
2003 2025

201 publications in total across all disciplines

View publications per year as a table
Nikhil Chopra: publications per year, 2003 to 2025
Year Publications
2003 1
2004 5
2005 2
2006 6
2007 4
2008 9
2009 4
2010 6
2011 9
2012 13
2013 14
2014 7
2015 17
2016 6
2017 12
2018 14
2019 10
2020 9
2021 10
2022 14
2023 11
2024 11
2025 7
Total 201
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Nikhil Chopra publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Nikhil Chopra sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 63 bars. Horizontal axis: publications, 47–56 to 659+. Vertical axis: number of scientists, 0 to 155. Most scientists, 155, have 147–156 publications. The last bar groups every scientist with 659 publications or more. The highlighted bar, 137–146 publications, is where this scientist sits. 47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47–56 publications 659+

This scientist: 146 publications — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

View publications distribution as a table
Number of Mechanical and Aerospace Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
Publications Scientists This scientist
47–56 10
57–66 23
67–76 32
77–86 62
87–96 67
97–106 91
107–116 113
117–126 115
127–136 130
137–146 140 146
147–156 155
157–166 132
167–176 133
177–186 130
187–196 140
197–206 115
207–216 125
217–226 117
227–236 99
237–246 92
247–256 100
257–266 95
267–276 88
277–286 77
287–296 74
297–306 74
307–316 62
317–326 70
327–336 59
337–346 58
347–356 45
357–366 44
367–376 36
377–386 41
387–396 32
397–406 23
407–416 28
417–426 27
427–436 25
437–446 23
447–456 23
457–466 20
467–476 12
477–486 24
487–496 18
497–506 12
507–516 13
517–526 21
527–536 12
537–546 8
547–556 16
557–566 3
567–576 11
577–586 6
587–596 5
597–606 6
607–616 7
617–626 7
627–636 10
637–646 4
647–656 3
657–658 2
659+ 100
Download as CSV

Nikhil Chopra D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Nikhil Chopra sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 64 bars. Horizontal axis: D-Index, 30 to 93+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 34 D-Index. The last bar groups every scientist with 93 D-Index or more. The highlighted bar, 34 D-Index, is where this scientist sits. 30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 34 D-Index — 20th percentile

20% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

View D-Index distribution as a table
Number of Mechanical and Aerospace Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
D-Index Scientists This scientist
30 83
31 113
32 144
33 153
34 189 34
35 158
36 139
37 127
38 130
39 126
40 104
41 100
42 107
43 101
44 103
45 79
46 88
47 70
48 83
49 44
50 64
51 56
52 50
53 48
54 58
55 52
56 48
57 42
58 34
59 42
60 37
61 42
62 44
63 22
64 33
65 29
66 23
67 29
68 24
69 19
70 34
71 26
72 19
73 18
74 19
75 14
76 19
77 8
78 18
79 16
80 12
81 17
82 11
83 16
84 7
85 9
86 8
87 6
88 6
89 7
90 10
91 4
92 4
93+ 100
Download as CSV

Overview

Nikhil Chopra is affiliated with the University of Maryland, College Park in the United States. Their research spans over multiple fields within engineering and computer science, with a focus on artificial intelligence and control systems.

The scientist's main fields of study include Engineering and Computer Science. Within these, their work concentrates on several subfields:

  • Artificial Intelligence
  • Control and Systems Engineering
  • Computational Mechanics
  • Aerospace Engineering
  • Biomedical Engineering

The central topics addressed in their research involve:

  • Stochastic Gradient Optimization Techniques
  • Sparse and Compressive Sensing Techniques
  • Machine Learning and Extreme Learning Machines (ELM)
  • Underwater Vehicles and Communication Systems
  • Robotic Path Planning Algorithms
  • Teleoperation and Haptic Systems
  • Reinforcement Learning in Robotics

Nikhil Chopra has contributed to a number of recent publications, several of which illustrate this range of interests and expertise:

  • "Passivity-Based Control of Robots: Theory and Examples from the Literature," 2022, published in IEEE Control Systems
  • "Iterative pre-conditioning for expediting the distributed gradient-descent method: The case of linear least-squares problem," 2021, published in Automatica
  • "Decentralized Multisubsystem Co-Design Optimization Using Direct Collocation and Decomposition-Based Methods," 2020, published in Journal of Mechanical Design
  • "Generalized AdaGrad (G-AdaGrad) and Adam: A State-Space Perspective," 2021, presented at the 2021 60th IEEE Conference on Decision and Control (CDC)
  • "On Accelerating Distributed Convex Optimizations," 2021, available on arXiv (Cornell University)

The scientist has worked extensively with several frequent coauthors, including:

  • Kushal Chakrabarti
  • Nirupam Gupta
  • Tianchen Liu
  • Lasitha Weerakoon
  • Takeshi Hatanaka

Their work has appeared in multiple publication venues, highlighting an engagement with both conference and journal outlets. These venues include:

  • arXiv (Cornell University)
  • IEEE Control Systems Letters
  • Automatica
  • 2022 IEEE 61st Conference on Decision and Control (CDC)
  • 2021 60th IEEE Conference on Decision and Control (CDC)

Best Publications

  • Passivity-Based Control of Multi-Agent Systems

    Nikhil Chopra;Mark W. Spong

  • On Exponential Synchronization of Kuramoto Oscillators

    N. Chopra;M.W. Spong

  • Brief paper: Synchronization of bilateral teleoperators with time delay

    Nikhil Chopra;Mark W. Spong;Rogelio Lozano

  • On Event Triggered Tracking for Nonlinear Systems

    Pavankumar Tallapragada;Nikhil Chopra

  • Bilateral teleoperation over the internet: the time varying delay problem

    N. Chopra;M.W. Spong;S. Hirche;M. Buss

  • On tracking performance in bilateral teleoperation

    N. Chopra;M.W. Spong;R. Ortega;N.E. Barabanov

  • Passivity-Based Control and Estimation in Networked Robotics

    Takeshi Hatanaka;Nikhil Chopra;Masayuki Fujita;Mark Spong

  • Controlled Synchronization of Heterogeneous Robotic Manipulators in the Task Space

    Yen-Chen Liu;N. Chopra

  • Distributed control of multi-robot systems with global connectivity maintenance

    Lorenzo Sabattini;Cristian Secchi;Nikhil Chopra;Andrea Gasparri

  • Decentralized connectivity maintenance for cooperative control of mobile robotic systems

    Lorenzo Sabattini;Nikhil Chopra;Cristian Secchi

  • Bilateral Teleoperation Over Unreliable Communication Networks

    N. Chopra;P. Berestesky;M.W. Spong

  • Output Synchronization of Nonlinear Systems with Time Delay in Communication

    N. Chopra;M.W. Spong

  • Output Synchronization on Strongly Connected Graphs

    N. Chopra

  • Discrete time passivity in bilateral teleoperation over the Internet

    P. Berestesky;N. Chopra;M.W. Spong

  • Control of semi-autonomous teleoperation system with time delays

    Yen-Chen Liu;Nikhil Chopra

  • Decentralized Event-Triggering for Control of Nonlinear Systems

    Pavankumar Tallapragada;Nikhil Chopra

  • Passivity-Based Distributed Optimization With Communication Delays Using PI Consensus Algorithm

    Takeshi Hatanaka;Nikhil Chopra;Takayuki Ishizaki;Na Li

  • Adaptive coordination control of bilateral teleoperators with time delay

    N. Chopra;M.W. Spong

  • Output Synchronization of Nonlinear Systems with Relative Degree One

    Nikhil Chopra;Mark W. Spong

  • Event-triggered dynamic output feedback control for LTI systems

    Pavankumar Tallapragada;Nikhil Chopra

  • On Synchronization of Kuramoto Oscillators

    N. Chopra;M.W. Spong

Frequent Co-Authors

Mark W. Spong
Mark W. Spong The University of Texas at Dallas
Cristian Secchi
Cristian Secchi University of Modena and Reggio Emilia
Shapour Azarm
Shapour Azarm University of Maryland, College Park
Balakumar Balachandran
Balakumar Balachandran University of Maryland, College Park
Rogelio Lozano
Rogelio Lozano CINVESTAV
Jonathan Katz
Jonathan Katz University of Maryland, College Park
Na Li
Na Li Harvard University
Romeo Ortega
Romeo Ortega Instituto Tecnológico Autónomo de México
Brian M. Sadler
Brian M. Sadler United States Army Research Laboratory
Dusan M. Stipanovic
Dusan M. Stipanovic University of Illinois at Urbana-Champaign

External Links

Personal website of Nikhil Chopra Google Scholar page

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Related Online Degrees & Career Pathways

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Exploring these related online degrees helps broaden career pathways beyond traditional engineering roles, combining technical expertise with interdisciplinary skills for a competitive edge.

Best Scientists Citing Nikhil Chopra

Seung-Yeal Ha

Seung-Yeal Ha

Seoul National University

Publications: 58

Ali Saberi

Ali Saberi

Washington State University

Publications: 49

Anton A. Stoorvogel

Anton A. Stoorvogel

University of Twente

Publications: 44

Mahdi Tavakoli

Mahdi Tavakoli

University of Alberta

Publications: 40

Mark W. Spong

Mark W. Spong

The University of Texas at Dallas

Publications: 36

Cristian Secchi

Cristian Secchi

University of Modena and Reggio Emilia

Publications: 36

Sandra Hirche

Sandra Hirche

Technical University of Munich

Publications: 34

Frank L. Lewis

Frank L. Lewis

The University of Texas at Arlington

Publications: 31

Changchun Hua

Changchun Hua

Yanshan University

Publications: 25

Panos J. Antsaklis

Panos J. Antsaklis

University of Notre Dame

Publications: 25

Abdelhamid Tayebi

Abdelhamid Tayebi

Lakehead University

Publications: 24

Wei Ren

Wei Ren

University of California, Riverside

Publications: 23

Peter X. Liu

Peter X. Liu

Carleton University

Publications: 21

Cesare Fantuzzi

Cesare Fantuzzi

University of Modena and Reggio Emilia

Publications: 21

Dongjun Lee

Dongjun Lee

Seoul National University

Publications: 19

Francesco Bullo

Francesco Bullo

University of California, Santa Barbara

Publications: 18

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