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Godwin Ponraj
PhD Student, Department of Biomedical Engineering, National University of Singapore.

I am a Ph.D graduate (2024) from the Department of Biomedical Engineering, National University of Singapore (NUS) under the supervision of Assoc. Prof. Hongliang Ren. Since 2016, I have been with the Medical Mechatronics lab, NUS, and have been working in the field of tactile sensing, control, and teleoperation of soft robotic systems. Before that, I received my Masters degree in Electrical Engineering with specialization in Automation and Control, from the Department of Electrical and Computer Engineering, NUS in 2016.

I am currently working on integrating origami and kirigami designs into close-range chip-less RF sensing for use in biomedical applications.

godwin.joseph@u.nus.edu Google Scholar Linked In Github

Key Projects

Magnetic Resonance Coupling based Wireless Power Sharing Scheme

Chip-Less Wireless Sensing of Endotracheal Intubation

Chip-Less Wireless Sensing with Kirigami using Ink-Jet Printable Materials

Kirigami Bracelet to measure Skin Impedance & Classify Hand Gestures

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Key Publications

G. Ponraj, C. Cai, and H. Ren, “Chip-Less Real-time Wireless Sensing of Endotracheal Intubation Tubes by Printing and Mounting Conformable Antenna Tag,” in IEEE Robotics and Automation Letters, vol. 7, no. 2, pp. 2369-2376, April 2022, doi: 10.1109/LRA.2022.3141664.
G. Ponraj, W. Le Yeo, K. S. Kumar, M. S. Kalairaj, C. J. Cai, and H. Ren, “Chip-Less Wireless Sensing of Kirigami Structural Morphing Under Various Mechanical Stimuli Using Home-Based Ink-Jet Printable Materials,” in 2021 IEEE International Conference on Robotics and Automation (ICRA), May 2021, pp. 11400–11407, doi: 10.1109/ICRA48506.2021.9561945.
G. Ponraj, X. Z. Wang, K. S. Kumar, and H. Ren, “Comparative Study of Machine Learning Algorithms to Classify Hand Gestures from Deployable and Breathable Kirigami-Based Electrical Impedance Bracelet,” Multimodal Technol. Interact. 2020, vol. 4, no. 3, p. 47, Aug. 2020, doi: 10.3390/MTI4030047.
J. Li, Y. B. Seng, G. Ponraj, K. S. Kumar, C. J. Cai, and H. Ren, “Kirigami Strain Sensing on Balloon Catheters with Temporary Tattoo Paper,” 2021 IEEE 17th Int. Conf. Wearable Implant. Body Sens. Networks, BSN 2021, Jul. 2021, doi: 10.1109/BSN51625.2021.9507031.

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Education

Doctor of Philosophy
Biomedical Engineering
National University of Singapore
Aug’19 – Apr'24

Master of Science
Electrical Engineering (Automation & Control)
National University of Singapore
Aug’14 – Dec’15

Bachelor of Engineering
Electrical & Electronics Engineering
Thiagarajar College of Engineering, India
Jun’09 – Apr’13

Experience

Research Engineer
National University of Singapore
May’16 - Jul’19

Designed and fabricated piezoresistive tactile sensors, and worked on integration with soft robotic manipulators, and subsequent tactile based control. Collaborated with multiple research groups to demonstrate bimanual manipulation with tactile feedback capability.

Process Control System Engineer
Micron Semiconductors
Jul’15 - Apr’16

As a Run-to-Run control engineer, implemented feedback and feed forward control for several processes in the semiconductor chip fabrication workflow and improved the KPI metrics of run coverage to >98% and reduced error percentage to <1%.

Associate System Engineer
IBM India Pvt. Ltd.
Jun’13 – Jun’14

Supported maintenance of product and customer details database related to IBM’s commercial website and resolved critical performance issues.