Publications by Harshal Arun Sonar

Body impact evaluation system and wearable measurement system therefor

A measurement system (3) for a wearable item (2) comprising a pressure sensing system including a plurality of capsule chambers (22) each filled with a fluid, and pressure sensors (28) connected to the capsule chambers configured to measure a variation in ...

2024

Body impact evaluation system and wearable measurement system therefor

Kamiar Aminian, Harshal Arun Sonar

A measurement system for a wearable item comprising a capacitive pressure sensing system (5) including a plurality of capacitive sensors (6) comprising a deformable insulator layer (32a, 32b) and at least first and second electrodes (30a, 30b, 30c) on oppo ...

2024

Hand and face somatotopy shown using MRI-safe vibrotactile stimulation with a novel soft pneumatic actuator (SPA)-skin interface

Jamie Paik, Harshal Arun Sonar

The exact somatotopy of the human facial representation in the primary somatosensory cortex (S1) remains de-bated. One reason that progress has been hampered is due to the methodological challenge of how to apply automated vibrotactile stimuli to face area ...

ACADEMIC PRESS INC ELSEVIER SCIENCE2023

Soft Touch using Soft Pneumatic Actuator-Skin as a Wearable Haptic Feedback Device

Jamie Paik, Harshal Arun Sonar, Jian-Lin Huang

Understanding the external environment depends heavily on vision, audition, and touch. Like vision and audition, the human sense of touch is complex. Tactile perception is composed of multiple fundamental and physical experiences felt as changes in stiffne ...

2021

Flow Path Optimization for Soft Pneumatic Actuators: Towards Optimal Performance and Portability

Jamie Paik, Harshal Arun Sonar, Sagar Dattatray Joshi

Soft pneumatic actuators (SPAs) are highly desirable for interactive robotics applications owing to their unconventional properties like high compliance, safe human-machine interaction and adaptable design space. The SPA dynamic behaviour is governed by pn ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021

Comprehensive Interactive Soft Interfaces for Wearable Tactile Feedback

Harshal Arun Sonar

As the field of robotics continues to grow outside the manufacturing environment into our daily lives, the interactions between humans and robots are increasingly becoming close and dynamic. This type of environment requires robots to be less rigid, multi- ...

EPFL2021

Closed-Loop Haptic Feedback Control Using a Self-Sensing Soft Pneumatic Actuator Skin

Stéphanie Lacour, Jamie Paik, Harshal Arun Sonar, Aaron Powers Gerratt

In this article, we achieve a closed-loop control over haptic feedback, first time for an entirely soft platform. We prototyped a novel self-sensing soft pneumatic actuator (SPA) with soft strain sensors, called SPA-skin, which withstands large multiaxial ...

2020

Age-Dependent Asymmetry of Wrist Position Sense Is Not Influenced by Stochastic Tactile Stimulation

Jamie Paik, Olivier Lambercy, Harshal Arun Sonar

Stochastic stimulation has been shown to improve movement, balance, the sense of touch, and may also improve position sense. This stimulation can be non-invasive and may be a simple technology to enhance proprioception. In this study, we investigated wheth ...

2020

Design and Computational Modeling of a Modular, Compliant Robotic Assembly for Human Lumbar Unit and Spinal Cord Assistance (vol 7, 14391, 2017)

Jamie Paik, Matthew Aaron Robertson, Harshal Arun Sonar, Gunjan Agarwal

Nature Research2018

A reconfigurable interactive interface for controlling robotic origami in virtual environments

Jamie Paik, Harshal Arun Sonar, Zhenishbek Zhakypov, Jian-Lin Huang

Origami shape transformation is dictated by predefined folding patterns and their folding sequence. The working principle of robotic origami is based on the same principle: we design quasi-two-dimensional tiles and connecting hinges and define and program ...

2018