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Chang-Sei Kim

6 accepted papers

2023

MagNeed - Needle-Shaped Electromagnets for Localized Actuation Within Compact Workspaces

RA-L 2023

Electromagnetic actuation of micro-/milli-sized agents has traditionally relied on large electromagnets positioned at considerable distances from the agents. As a result, the electromagnets consume kilowatts of power to overcome the limited generation of magnetic field gradients. Miniaturized electr

Cited by 3SourceScholar
2022

2D Magnetic Actuation and Localization of a Surface Milli-Roller in Low Reynolds Numbers

RA-L 2022

Magnetic actuation of minimally invasive medical tetherless devices holds great promise in several biomedical applications. However, there are still several challenges in noninvasive localization, both in terms of sensing detectable signals of these devices and estimating their states. In this work,

Cited by 6SourceScholar
2022

A Multi-Segmented Soft Finger Using Snap-Through Instability of a Soft Valve With a Slit

RA-L 2022

Soft fingers with multiple segments can perform various grasping modes when each segment is individually controlled, although this requires a number of inputs and leads to a complicated structure. In this paper, we propose a multi-segment soft finger capable of generating dual modes only using a sin

Cited by 3SourceScholar
2021

Ascidian-Inspired Soft Robots That Can Crawl, Tumble, and Pick-and-Place Objects

RA-L 2021

A cylindrical shaped marine invertebrate ascidian has muscle fibers surrounding its body, which induce the contraction motion when the animal senses the external stimuli. As inspired by its cylindrical shape and the contraction motion of the ascidian, we introduce a soft robot that resembles this wa

Cited by 6SourceScholar
2021

Open-Loop Magnetic Actuation of Helical Robots using Position-Constrained Rotating Dipole Field

IROS 2021poster

Control of tetherless magnetically actuated helical robots using rotating dipole fields has a wide variety of medical applications. The most promising technique in manipulation of these robots involves a rotating permanent magnet controlled by a robotic manipulator. In this work, we study the open-l…

Cited by 7SourceScholar