https://scholar.dgist.ac.kr/handle/20.500.11750/171 2026-07-14T07:06:51Z https://scholar.dgist.ac.kr/handle/20.500.11750/60440 Title: 자성-압전 마이크로 로봇 Author(s): 최홍수; 전성웅; 김진영; 김선형 Abstract: 온열 치료와, 전기적 치료 및 세포 치료가 가능한 자성-압전 마이크로 로봇이 개시된다. 자성-압전 마이크로 로봇은, 바디 및 상기 바디 표면에 형성되며 자성 입자와 압전 입자를 포함하고, 외부 자극에 의해서 상기 자성 입자에서 열이 발생하고, 상기 압전 입자에서 전기 자극이 발생하는 자극 발생층을 포함하여 구성 되고, 상기 자성 입자에 의한 온열 치료와 상기 압전 입자에 의한 전기적 치료 중 어느 하나의 치료 또는 두가지 치료가 동시에 수행된다. https://scholar.dgist.ac.kr/handle/20.500.11750/60431 Title: 자기구동시스템 Author(s): 이학준; Latifi Gharamaleki Nader; 최홍수; 김진영 Abstract: 본 개시에 따른 자기구동시스템은 베드; 상기 베드 일측에 설치한 제1자기발생부; 상기 베드 배면에 설치한 제2자기발생부; 상기 제1, 2자기발생부와 연결한 영상장치; 및 상기 제1, 2자기발생부와 상기 영상장치를 제어하는 제어부; 를 포함할 수 있다. https://scholar.dgist.ac.kr/handle/20.500.11750/60229 Title: A magnetically steerable soft gripper for navigating and grasping in constrained spaces Author(s): Dong Xiao; Lee, Hakjoon; Ahmed, Awais; Choi, Hongsoo Abstract: Magnetic soft grippers hold significant promise for applications requiring gentle and soft interaction with objects. However, steering their movement within constrained spaces remains a major challenge. This study presents a magnetically steerable soft gripper that combines a magnetically steerable soft tube with a magnetic soft gripper. By utilizing distinct magnetization directions for the soft gripper and soft tube, both steering and gripping can be achieved through an external magnetic field. The gripper is capable of lifting objects weighing more than 68 times its own weight under a 40 mT magnetic field (1.7 times per mT). It can also grasp objects of various shapes and sizes. When integrated with a commercial catheter, the steerable gripper successfully performs targeted gripping in a 3D phantom environment. This work introduces a novel magnetically steerable soft gripper system for precise manipulation in confined spaces, with strong potential for applications inside the human body. © The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2026. 2025-12-31T15:00:00Z https://scholar.dgist.ac.kr/handle/20.500.11750/60217 Title: Magnetic hyperthermia-induced hydrogen therapy for cancer treatment using PEG-coated Mg–Ni Degradable microrobots Author(s): Dutta, Sourav; Patra, Tanushree; Yea, Kyungmoo; Choi, Hongsoo Abstract: Hydrogen therapy using magnesium-based micromotors offers a promising strategy for treating diseases such as cancer, diabetes, and Alzheimer’s, which are associated with elevated levels of reactive oxygen species (ROS). However, their clinical application is limited by uncontrollable motion and high reactivity in physiological environments. To overcome these challenges, we have developed a polymer-coated, magnetically guided magnesium (Mg) microrobot that integrates hydrogen therapy with magnetic hyperthermia. The polymer coating ensures stability in phosphate-buffered saline (PBS), while the microrobot achieves a velocity of 18.63 ± 0.85 μm/s under a 15 mT, 10 Hz rotating magnetic field. Mild magnetic heating (∼43 °C) partially melts the polymeric shell, triggering hydrogen release. In vitro studies with HCT 116 cells demonstrated a significant reduction in ROS at 3 mg/mL following magnetic hyperthermia. In vivo experiments in mice showed that the microrobot alleviated oxidative stress and significantly decreased tumor volume. These results indicated that Mg-based microrobots represent a controllable and effective therapeutic platform for ROS-related diseases. © 2026 . 2026-01-31T15:00:00Z