Current Team


Dr. Sujatha Srinivasan

Department of Mechanical Engineering
IIT Madras
+91-44-2257 5695/4728

PhD, Mechanical Engineering, The Ohio State University, 2007
MS, Mechanical Engineering, The University of Toledo, 1994
B.Tech, Mechanical Engineering, IIT Madras, 1992

Google Scholar Profile

Sujatha Srinivasan is Professor in the Department of Mechanical Engineering and heads the TTK Center for Rehabilitation Research and Device Development (R2D2) at IIT Madras. Her research focuses on applying mechanism design and movement biomechanics to develop functional and affordable assistive/rehabilitation devices for people with movement disability.

Prof. Sujatha has nearly 30 years of experience in her field including 8 years in the US industry. She is a 1992 alumna of IIT Madras and joined its faculty in 2008. She is also co-founder of NeoMotion, a startup on assistive devices, incubated at IIT Madras. In her free time, she likes tailoring, going for walks and spending time with her family.

Associated Faculty

Dr. Sourav Rakshit

Assistant Professor, Department of Mechanical Engineering, IIT Madras

Dr. Sundararajan Natarajan

Associate Professor, Department of Mechanical Engineering, IIT Madras

Dr. Sivakumar Balasubramanian

Professor, Department of Bioengineering, CMC Vellore

Dr. Manish Anand

Assistant Professor, Department of Mechanical Engineering, IIT Madras

Core Team

Vivek Sarda
Head, Design Projects

Vivek Sarda is a graduate from IIT Madras with specialization in Product Design. His interest for creating impact with work made him start his career in assistive devices. Some of the devices he has worked on include - Body Movement Wheelchair, Arise Standing Wheelchair, NeoBolt - Wheelchair clip-on, NeoFly - Customized wheelchair, Polycentric Prosthetic knee, EZ-Lok Orthotic knee etc. User-centric design forms his core value for product development. His motto - “Build great products which users love”

Vivek heads the design team at the R2D2 center. The work involves development of devices and assisting various teams in their product development journey.

Justin Vijay Jesudas
Head, Operations & Outreach

Justin Jesudas joins us with over two decades of corporate experience in research and analytics across banking and engineering services industries with companies like UBS, RR Donnelley and Cognizant.

Justin heads the operations and outreach activities of R2D2, apart from guiding the team on user perspectives, prototype refining and device commercialization.

With 11 years of lived experience as a tetraplegic (paralyzed neck downwards), working in the assistive technologies space was a natural calling for Justin.

He is an international swimming champion, and has represented India at the World Swimming Championship and Para-Asian Games. He enjoys long drives in his modified hand-operated car, beach surfing and SCUBA diving.

Samson Daniel
Head, Clinical training & research

Samson is an occupational therapist by education and a former tutor and clinical occupational therapist at the Rehabilitation Institute, CMC Vellore for 8 years. At R2D2, Samson oversees the partner dissemination program for Arise Standing Wheelchair and research for TouchFREEDOM among other projects. He has developed wheelchair cushions, which are now part of IIT Madras incubated NeoMotion’s product portfolio.

A combination of upbringing in a service minded family, interest in DIY projects and passion for restoring hand functions of persons with such a need pushed him to a space which many therapists overlook - assistive technologies.

He lives in Chennai with parents and sister. He loves photography, cooking and long rides on his motorcycle.

Post-Doctoral Researcher Project Officer

Dr. T M Balaramakrishnan

T M Balaramakrishnan is a research engineer based at Chennai with interests in the fields of biomechanics, finite element analysis and product design.

An alumnus of National Institute of Technology Tiruchirappalli and Indian Institute of Technology Madras, his doctoral thesis involved the proposition of a novel design framework for prosthetic feet using non-linear finite element analysis. He is presently implementing the developed framework towards designing a series of highly functional and affordable prosthetic feet.

Besides being a researcher, he is a learning musician and a photographer.

Rahul Bhamare

As a Project Officer at R2D2, Rahul has been working on a variety of projects such as Saathi WalkChair, Gait trainer, CP chair, customisable back brace, scoliosis correction brace and ankle therapy device.

After completing Masters in Design Engineering at IIT, Delhi, his search for an opportunity to design and develop innovative products that are useful to the society led him to R2D2. His absolute love for technological products and preference for using customized and personalised products got him interested in assistive technology, where the need for personalization is rather high.

Project Staff

Seethapathi P

Seethapathi is a Senior Machinist at R2D2 and holds a diploma in Mechanical Engineering. He has worked on various projects such as Arise Standing Wheelchair, NeoFly, NeoBolt and EZ-LOK orthotic knee, and has been involved in assembly and associated works of Prosthetic knee and Hip simulator.

He voluntarily trained in Mastercam and has taken the responsibility for manufacturing prosthetic knee prototypes at R2D2. With over 5 years of experience, he has accumulated a wealth of knowledge that makes him more productive and easily take on challenges and achieve required output.

He is interested in developing educational games for school children. He likes to play cricket, and listen to music.

Rajesh KumaR

Rajesh Kumar is a senior fabrication and assembly person. Formally educated at the Industrial Training Institute, he started working on the Gait trainer and Standing wheelchair, where he understood the need for assistive technologies. He has also contributed to more projects like NeoFly, NeoBolt, Beach Wheelchair, TCM, Saathi Walkchair and Body Movement Wheelchair.

With his experience he is able to find fabrication possibilities and enhancements within the design stage itself that helps the research team in all aspects. He is also interested in and started learning Solid works and Mastercam helping his involvement in design and manufacturing stages of any product.

He loves to play cricket, volleyball, football and he is very much interested in trekking and sea swimming.

He also holds a bachelor’s degree in arts.

Naveenprasad Rajendran

Naveenprasad is working as a Project Associate at R2D2 since August 2020. He completed his undergraduate in Biomedical engineering from Sri Ramakrishna Engineering College, Coimbatore and Masters in Bioengineering from Christian Medical College, Vellore. His research interest is focused on development of new technologies and serious games for rehabilitation. Currently he is working in commercialization of Plug and Train robot (PLUTO). Having an exposure inside a rehabilitation institute for more than 2 years during his Masters made him understand difficulties and needs for therapists and patients during rehabilitation. That fueled his interest to undertake development of affordable and accessible technologies for rehabilitation.

He has a bucket list of experiments listed in his personal journal, which he wants to pursue. He is an excellent biker and has travelled 20,000 KM in 6 months, a district level tennis player, a marathoner and a good cook, which he realized during COVID lockdownr. He finds his inner peace by talking to his mother, feeling the cool breeze in the mountains, cycling with mesmerizing Ilaiyaraja and Yuvan songs.


Vigneshwar is a Mechanical Engineer from Agni College of Technology, Chennai. He is a Project Associate since 2017 and is currently working on production follow-up, quality checks and design assistance of EZ LOK orthotic knee joint.

He is also involved in prosthetic knee production follow-up, quality, assembly and static mechanical testing. He has picked up a keen interest in assistive devices and has worked on projects like hip simulator and NeoFly.

He also assists the research team in using the Gait Analysis system and VO2 analyser to generate data for biomechanical analysis of subjects.

His interest lies in project management and R&D; he enjoys listening to music, podcasts and reading books.


Bharath Shankar is a Mechanical Engineering graduate from Sri Sai Ram Institute of Technology, Chennai with over 2 years of experience in Quality Control/Assurance in the field of plastic injection moulding at Shibaura Machines in Chennai.

As a mechanical engineer he has always wanted to work on designing and manufacturing products that are actually helpful to people and what better way than to help in making assistive devices at the R2D2 center in IIT-Madras.

Being a big Leo Messi fan he enjoys watching football and even playing it. He is also an avid gamer and has experience building PCs for friends, family and himself.

Anandhakumar Murugesan

Anandhakumar joined R2D2 as a Project Associate in August 2020. He did his under-graduation in Biomedical Engineering from Sri Ramakrishna Engineering College, Coimbatore and Masters in Medical Electronics from College of Engineering, Chennai.

His interest lies in Rehabilitation Engineering and Bio Signal Processing. He is currently working on the project PLUg and Train robot (PLUTO) for assessing and training hand functions and also focuses on its commercialization.

He enjoys playing badminton and basketball. He loves spending most of his time on reading books and computing.

Manish Jadhav

Manish Rajendra Jadhav, is a young industrial designer with interest in designing and developing products that are inclusive and universal. His orientation to bridge the gap between thought and product, abled and disabled, between the privileged few and common people, drives him to create inclusive, adaptable, responsible and sensible design solutions for a wider and diverse audience.

He is an alumnus of the National Institute of Design (NID), Bangalore and Indian Institute of Technology (IIT), Jodhpur. His industry experience with Tata Automation Ltd, and National Engineering Pvt Ltd, supports the required technical knowledge with design skills to develop user center products.

In his free time, he would mostly be in the garden appreciating and tending to plants or reading books.

ashish jebin

Ashish holds a Bachelors in Mechanical Engineering from Visvesvaraya Technological University.

Concept ideation, designing and creating prototypes of the designs is something which has always been his interest

During college, he designed and developed a lower limb exoskeleton which was later sponsored by IISc Bangalore to aid in rehabilitation. The suit which was completely mechanized was programmed to imitate a human gait (walking) motion controlled by a simple joystick.

Later, he worked in a kitchen robotics & automation firm as their Design Engineer for 2 years, leading the design and development of multiple customized, automated machines which replicate a variety of dishes to aid restaurant franchises across the country.

He likes watching movies, travelling, 3D printing DIY crafts.


Alexander is a mechanical engineering graduate from Mar Athanasius College of Engineering, Kerala. He is interested in biomechanics and the development of prosthetics.

Currently he is doing MS Research at Indian Institute of Technology Madras with a major focus on the design and development of a Passive Energy Storage and Return Prosthetic Foot. He chose this area due to his interest in the field of biomechanics and human gait.

He is also interested in cycling, badminton and traveling.

Clinical training and research Team

Kritika Jain

Kritika is a Physiotherapy alumnus from Christian Medical College, Vellore, and School of Allied Health Sciences (MAHE), Manipal. She is a postgraduate in Neurosciences Physiotherapy and has more than four years of experience in treating patients who have neuromotor disorders with a specific focus on spinal cord injury rehabilitation.

She is currently a part of Touch REHAB project under R2D2 as Content Leader and leads a subsidiary project, Touch FREEDOM as well. Both the projects are user oriented and aim at disseminating evidence-based information about best affordable practices to live well with spinal cord injury. The projects also focus on delivering rehabilitation related guidance to users with spinal cord injury in remote locations to enable them to lead an independent life.

In her free time, she loves to read and has a new found love for gardening.

Karthik R. Rao

Karthik R. Rao is a Developmental Physiotherapist with more than 16 years of experience in working with children with special needs. He has many certifications in Pediatric Therapy including Sensory Integration (USA, 2006), Aquatic Therapy and Handwriting Without Tears.

He has over 9 years of experience working with the prestigious THE SPASTICS SOCIETY OF TAMILNADU (SPASTN) in various capacities as a Therapist, Course Coordinator, HOD and Senior Manager. He is a Master Trainer and has conducted more than 70 in-person workshops in different parts of the country. He was invited as a Resource Person by Sultan Qaboos University, Muscat in 2014. He has also been one of the course writers for Early Childhood Special Education for Cerebral Palsy (ECSE-CP) by the Indira Gandhi National Open University (IGNOU), New Delhi.

He has a private clinic named Shrishti Therapy Centre, in Chennai. He is currently working as Training & Quality Head in JOGO Biofeedback Clinic in Adyar, Chennai.

Karthik was associated with R2D2 since the early days of Arise SWC as a representative of SPASTN. He brings years of experience in working with children and their families and gives a therapeutic touch to assistive devices right from device planning to user stories. He is currently part of the dissemination team for ARISE SWC and has conducted workshops on behalf of R2D2 at Hyderabad and Bangalore apart from two webinars on this topic. He has also done the video editing of Arise Webinars that are currently aired in R2D2 IITM YouTube channel.

Besides his professional commitments, he claims himself to be an accomplished Bathroom Singer.


Ebenezer David is an Occupational Therapist from Christian Medical College, Vellore. She completed her Bachelor’s degree in 2017 and worked at Mary Varghese Institute of Rehabilitation until March 2021.

She is currently residing in Qatar and working part time as Project Associate at R2D2. She finds her work meaningful, as she gets to be a part in the journey of a person with spinal cord injury, with whom she works with.

Her hobbies and interests are singing, baking, home decor and organizing events.

PhD Scholars

Padma Naveena

Naveena completed her bachelor's degree in Mechanical engineering after which she worked with a startup where she undertook responsibilities as a tutor and content creator in the field of education.

Currently she is under a joint doctoral degree program with Indian Institute of Technology Madras and The University of Melbourne where she is working in the field of biomechanics with a major focus on movement at the knee joint after Anterior Cruciate Ligament Reconstruction. Her motivation behind choosing to work in the field of biomechanics is the curiosity about the human body and its complexity.

Besides academics, she is a passionate yoga practitioner and is trying to learn Indian classical instrument Veena.

Aravind Nehrujee

Aravind is a Ph.D. scholar in a joint program between IIT Madras and CMC Vellore; his research is focused on developing a robot for assessing and training hand functions. He did his undergrad in Mechanical Engineering from VIT University Vellore and Masters in Bioengineering from CMC Vellore. His research interests include rehabilitation engineering, serious games, and neuromechanics.

Having been a high school basketball player and going through multiple ACL reconstruction surgeries has pushed him towards the field of rehabilitation engineering. His personal experiences and professional experiences of working with patients motivate him to develop accessible and affordable tools for rehabilitation. Aravind enjoys his weekend bicycle rides and spends his free time reading non-fiction books and rock tumbling.

Preethi Srinivasan

Preethi is currently pursuing her PhD in Humanities and Social Sciences at IIT Madras. Before that, she was working full-time for nearly 7 years at as a content writer.

She is the founder of Soulfree, a public charitable trust that is working to improve the quality-of-life of persons living with spinal cord injury in India, with a special focus on women and those living below the line of poverty. Currently, she is working to set up an Integrated Spinal Rehabilitation centre called INSPIRE in a 20,000 ft² facility at Thiruvannamalai, Tamil Nadu.

As a person who has spent more than two decades in a body that is paralysed below the neck, she has an experiential understanding of the vital importance of assistive devices in enabling persons with impairments and empowering us by giving us access to improved quality-of-life and independence.

Preethi leads a simple spiritual life at Thiruvannamalai, with her mother. She loves nature, music, sports and food, but most of all, the bliss of just being fully alive in the present moment.

Prem Kumar

He began his journey at IIT Madras as a M.Tech student and is currently a Ph.D scholar. His interest in robotics and the challenges in physical human-robot interaction was a driving force for him to work in the assistive technologies space. He did his graduation in Mechanical Engineering at Government College of Engineering, Tirunelveli.

He is currently working on an Arm Rehabilitation Robot (AREBO). The robot focuses on the rehabilitation of the shoulder joint with intensive game therapy. His research interests include biomechanics and physical Human-Robot Interaction(pHRI).

Prem is an avid reader of storybooks and enjoys traveling.

Sachin Kumar

Sachin Kumar is a research scholar at IIT Madras with interests in the fields of biomechanics, smart material and vibration isolation.

An alumnus of National Institute of Technology Agartala and Indian Institute of Technology Madras he did course work along with project titled Design and development of MR damper for prosthetic knee application, under the guidance of Prof. Sujatha C and with help of Prof. Sujatha Srinivasan. He is presently working in characterization, mathematical modelling and designing of optimized MR damper for ankle application.

Apart from being a researcher, he loves cricket, chess and pets.

Honorary Member

S. Vaidyanathan (Advisor to R2D2 and NeoMotion)

    • Co-Founder of The Ganga Foundation and The Spinal Foundation

    • 30 years of living exceptionally well on a wheelchair and guiding others

    • Distinguished Alumnus of IIM Bangalore

It is with a heavy heart that we bade goodbye to Vaidy recently (May 2021). His spirit will continue to guide us in our work. Johan Dinakaran, Team NeoMotion, created this tribute to Vaidy.

Team Neomotion


NeoMotion will always be an integral part of the R2D2 family. Incubated at IIT Madras, NeoMotion was founded by our alumni, who are very passionate about empowering persons with mobility impairments and aim to create social equity through high quality assistive devices.



  • S. Sudheesh (joint guidance with Prof. MS Shunmugam), Swing Phase Analysis of Transfemoral Prosthesis Users Walking with Passive Knees, PhD 2021

  • TM Balaramakrishnan (joint guidance with Prof. Sundararajan Natarajan), A Novel Framework for Design and Analysis of Customised Prosthetic Feet using Non-linear Finite Element Analysis, PhD 2020

  • N Babu (joint guidance with Prof. S. Narayanan), Kinematic, Dynamic and Stability Study of Track, Leg, and Hybrid Locomotion Robot, PhD 2019

  • Ganesh Bapat, Development, Analysis And Clinical Evaluation Of Knee-Ankle-Foot Orthosis With Alternative Knee Joint Designs, PhD 2018

  • Solomon Seid Kebede, Optimal Design of Magnetorheological Damper for Prosthetic Knee Application (joint guidance with Prof. C. Sujatha, PhD 2017

  • DS Mohan Varma, Minimal kinematic models for the inverse dynamics analysis of normal and asymmetric gait, PhD 2015


  • Gunjan Patel (joint guidance with Dr. Rajdeep Ojha and Dr. Judy John, CMC), Development and Clinical Validation of a Portable and Wearable System for Gait Analysis, MS 2019

  • Sandeep Guguloth, Design and development of robotic mechanisms for upper extremity rehabilitation (joint guidance with Dr. Sivakumar Balasubramanian, CMC Vellore), MS 2018

  • Nitin Prakash Kamble, Stair Climbing Mechanism for Wheelchair, MS 2016

  • Kumaraswamy Udugu, Tolerance Analysis in mechanisms (joint guidance with Prof. M. S. Shunmugam), MS 2013


  • Guhan Narayanan, creating synthetic gait data using a multibody simulator, B.Tech 2021

  • Subham Swastik Kamal, Cyclic Knee Testing Machine, B.Tech 2020

  • Akshay Molawade, Design and Spring Balancing of a Manually Operated Pool Lift, B. Tech 2019

  • Sourya Varenya, Stance Control Knee Ankle Foot Orthoses, B. Tech 2018

  • Manish Prajapat and Vishwajeet Sikchi, Add-on Device to Assist Stair Climbing of a Wheelchair, B. Tech 2017

  • Saish Kapadi, Design of an All-Terrain Wheelchair, B. Tech 2014

  • VVK Harish, Design of a Coconut Tree Climber, B. Tech 2014

  • Sushant Veer, Spring Balancing of Orthotic and Prosthetic Devices, B. Tech 2013

  • Girish A, Interactive Technology for Orientation and Mobility training of Blind and Visually Impaired Children, B.Tech 2013

  • Prashant Poondla, Design of the I-Tilt and Go (i-TAG) device, B.Tech 2012


  • Vishnu Teja, software simulations of transfemoral prosthesis, M.Tech 2021

  • Pranjali Manjrekar, Mobility Device Assisted by Functional Electrical Stimulation, DD 2020

  • G. Manideep,Biomechanics of Standing Wheelchair, M.Tech 2019

  • Shoudho Das, Development of a sit-to-stand device, M. Tech 2019 (co-guide Prof. Sourav Rakshit)

  • Venkat Teja, Development of an exercising device using muscle stimulation, DD 2019

  • Sanjay Hansdah, Wheelchair Bike, DD 2017

  • Sripriya Kalidoss, Electromechanically Assisted Gait and Lower Body Exercise Device, DD 2016

  • Ashish Mohan Sharma, Development of motorized assistive device for people with paraplegia, DD 2016

  • K Narayan Pai, Development of Clutch Adjustment Device, M.Tech 2016

  • Harsha Vardhan Reddy, Computer aided optimal synthesis of fixed length and adjustable planar mechanisms, DD 2015

  • Kaushik Naidu, Transfer device for wheelchair users, M. Tech 2015

  • TS Anand, Synthesis and Design of Polycentric Knee for Transfemoral Prosthesis, M. Tech 2014

  • Vivek Sarda, Training and Mobility Device for Children with Cerebral Palsy, DD 2014

  • Swostik Sourav Dash, Swimming Pool Lift for Physically Challenged, DD 2013

  • Sumit Pethwadajkar, Design of an Improved Standing Wheelchair (co-guide Prof. Shankar Krishnapillai), DD 2013

  • M. V. Jairaj, Design of a Low Vision Telescope, DD 2013

  • P. S. Satyanarayana, Development of a novel mechanically variable valve timing (M-VVT) system to improve volumetric efficiency of small engines (co-guide Prof. A. Ramesh), M. Tech 2013

  • Harshal Chaudhari, Development of a Standing Wheelchair, DD 2012

  • Varun Joshi, Software for Mechanism Design, DD 2012

  • K. Aravind Reddy, Design and Analysis of KAFO with improved stance stability, DD 2011

  • Banugade Nitin Madhukar, Design of gravity-balancing leg orthosis for gait rehabilitation, M.Tech 2011

  • Ramu Banoth, Design of polycentric knee mechanism for above-knee amputee, M.Tech 2011

  • T. Praveen, Standing wheelchair (co-guide Prof. Seshadri Shekar), M. Tech 2011

  • J. Santi Sagar, Manufacturing improvements for the Jaipur foot, M.Tech 2010

  • G. Veerababu, Mechanical characterization of the Jaipur foot, M.Tech 2010

  • Mayank Pareek, Development of an adjustable KAFO, DD 2009

  • Vishnu Vardhan Reddy, Development of a knee mechanism for a KAFO, M.Tech 2009

  • R Ramaraj, Design, development and performance evaluation of mechanically operated multiplate wet clutch for PTO application (co-guide Prof. M. M. Mayuram), M.Tech 2009