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Recently, the capsule endoscope can be widely used for the diagnosis of digestive organs. It is passively moved by the peristaltic waves of gastro-intestinal tract and thus has some limitations for doctor to get the image of the organ and to diagnose more thoroughly. As a solution of these problems, therefore, a locomotive mechanism of capsule endoscopes(More)
For the development of bacteria-based biomedical microrobot, we propose the fabrication method of biocompatible poly(ethylene glycol) (PEG) microbeads using a cross-junction microfluidic channel. PEG droplets were polymerized by ultraviolet (UV) irradiation to form PEG microbeads of 8.18 ± 3.4 μm diameter in a microfluidic channel. Generally, the bacteria(More)
We propose a bacteria-based microrobot (bacteriobot) based on a new fusion paradigm for theranostic activities against solid tumors. We develop a bacteriobot using the strong attachment of bacteria to Cy5.5-coated polystyrene microbeads due to the high-affinity interaction between biotin and streptavidin. The chemotactic responses of the bacteria and the(More)
The purpose of this paper is to introduce a new generation of micro-robots utilizing electromagnetic actuation (EMA) systems technology. The fundamental principles and characteristics of EMA systems are presented in order to facilitate understanding of the technology. The proposed micro-robots using EMA systems are categorized as 1) micro-robots actuated by(More)
A wireless capsule endoscope, M2A, has been developed to replace the conventional endoscope. However, the commercialized capsule endoscope moves passively by peristaltic waves and gravity, which has some limitations for doctors to diagnose more thoroughly and actively. In order to solve this problem, a locomotive mechanism is proposed for a wireless capsule(More)
Recently, the capsule endoscope has been highlighted for the patient's convenience and the possibility of application in the small intestine. However, the capsule endoscope has some limitations in obtaining an image of the digestive organ because its movement depends only on the peristaltic motion. In order to solve these problems, it is necessary to(More)
Three-dimensional cultures in a microfabricated environment provide in vivo-like conditions for cells, and have been used in a variety of applications in basic and clinical studies. In this study, the contractility of cardiomyocytes in a 3D environment using complex 3D hybrid biopolymer microcantilevers was quantified and compared with that observed in a 2D(More)
Various actuators have been studied to develop micro robots for a capsule endoscope. In particular, some locomotive mechanisms based on the SMA (Shape Memory Alloy) actuator, the PZT actuator, the Polymer actuator, and the micro motor have been actively studied to fabricate a microrobot for a capsule endoscope. Before we fabricate microrobots, smart(More)
Recently, diseases in gastro-intestinal tract have drastically increased. As a result, endoscopic technologies are being developed to diagnose and treat these diseases. Bio-material property is essential information to develop endoscopic devices especially capsule type endoscope. Because the capsule endoscope is moved by the peristaltic motion, it has some(More)
0957-4158/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.mechatronics.2010.09.001 ⇑ Corresponding author. ⇑⇑ Corresponding author. E-mail addresses: jop@jnu.ac.kr (J. Park), spark@jn Various electromagnetic based actuation (EMA) methods have been proposed for the actuation of microrobots. The advantage of EMA is that it can generate a wireless(More)