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Bioinspired magnetic cilia:from materials to applications

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Microsystems & Nanoengineering 2023年第6期9卷 107-128页

作者： Seongjin Park Geonjun Choi Minsu Kang Woochan kim jangho kim Hoon Eui Jeong Department of Mechanical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Convergence Biosystems Engineering Chonnam National UniversityGwangju61186Republic of Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju61186Republic of Korea

Microscale and nanoscale cilia are ubiquitous in natural systems where they serve diverse biological *** artificial magnetic cilia have emerged as a highly promising technology with vast potential applications,ranging from soft robotics to highly precise *** this review,we comprehensively discuss the roles of cilia in nature and the various types of magnetic particles utilized in magnetic cilia;additionally,we explore the top-down and bottom-up fabrication techniques employed for their ***,we examine the various applications of magnetic cilia,including their use in soft robotics,droplet and particle control systems,fluidics,optical devices,and ***,we present our conclusions and the future outlook for magnetic cilia research and development,including the challenges that need to be overcome and the potential for further integration with emerging technologies.

关键词： magnetic overcome precise

Photodeposited metal-semiconductor nanocomposites and their applications

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Journal of Materiomics 2018年第2期4卷 83-94页

作者： Yoonkyung Lee Eunpa kim Yunjeong Park jangho kim WonHyoung Ryu Junsuk Rho Kyunghoon kim School of Mechanical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea Semiconductor R&D Center Samsung ElectronicsHwaseong 18448Republic of Korea Department of Rural and Biosystems Engineering Chonnam National UniversityGwangju 61186Republic of Korea Department of Mechanical Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea

While two-dimensional layered nanomaterials including transition metal oxides and transition metal dichalcogenides have been widely researched because of their unique electronic and optical properties,they still have some *** overcome these limitations,transition metal oxides and transition metal dichalcogenides based nanocomposites have been developed using various methods and have exhibited superior *** this paper,we introduce the photodeposition method and review the photodeposition of metal nanoparticles on the surface of transition metal oxide and transition metal *** current applications are also explained,such as photocatalysis,hydrogen evolution reaction,surface enhanced Ramanscattering,*** approach for nanocomposites has potential for future research areas such as photocatalysis,hydrogen evolution reaction,surface enhanced Raman scattering,and other *** approach for nanocomposite has the potential for future research areas.

关键词： Photodeposition Nanocomposite Transition metal oxide Transition metal dichalcogenide

Bioprinting Methods for Fabricating In Vitro Tubular Blood Vessel Models

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Cyborg and Bionic Systems 2023年第1期4卷 178-195页

作者： Seon-Jin kim Min-Gyun kim jangho kim Jessie SJeon Jinsoo Park Hee-Gyeong Yi Department of Rural and Biosystems Engineering College of Agriculture and Life SciencesChonnam National UniversityGwangjuRepublic of Korea Department of Convergence Biosystems Engineering College of Agriculture and Life SciencesChonnam National UniversityGwangjuRepublic of Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju 61186Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and TechnologyDaejeonRepublic of Korea Department of Mechanical Engineering Chonnam National UniversityRepublic of Korea

Dysfunctional blood vessels are implicated in various diseases,including cardiovascular diseases,neurodegenerative diseases,and *** studies have attempted to prevent and treat vascular diseases and understand interactions between these diseases and blood vessels across different organs and *** studies were conducted using 2-dimensional(2D)in vitro and animal ***,these models have difficulties in mimicking the 3D microenvironment in human,simulating kinetics related to cell activities,and replicating human pathophysiology;in addition,3D models involve remarkably high ***,in vitro bioengineered models(BMs)have recently gained *** created through biofabrication based on tissue engineering and regenerative medicine are breakthrough models that can overcome limitations of 2D and animal *** can also simulate the natural microenvironment in a patient-and target-specific *** this review,we will introduce 3D bioprinting methods for fabricating bioengineered blood vessel models,which can serve as the basis for treating and preventing various vascular ***,we will describe possible advancements from tubular to vascular ***,we will discuss specific applications,limitations,and future perspectives of fabricated BMs.

关键词： Blood organs printing

Wet tissue adhesive polymeric powder hydrogels for skeletal muscle regeneration

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Bioactive Materials 2024年第10期40卷 334-344页

作者： Mingyu Lee Daun Seo Junggeon Park Sun Hong Lee Jin Jeon Woochan kim jangho kim Hee Seok Yang Jae Young Lee School of Materials Science and Engineering Gwangju Institute of Science and TechnologyGwangju61005Republic of Korea Department of Nanobiomedical Science&BK21 FOUR NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan31116Republic of Korea Department of Convergence Biosystems Engineering Chonnam National UniversityGwangju61186Republic of Korea Department of Rural and Biosystems Engineering Chonnam National UniversityGwangjuRepublic of Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju61186Republic of Korea

Volumetric muscle loss(VML)frequently results from traumatic incidents and can lead to severe functional *** have been widely employed for VML tissue regeneration,which are unfortunately ineffective because of the lack of intimate contact with injured tissue for structural and mechanical *** hydrogels allow for strong tissue connections for wound ***,conventional adhesive hydrogels exhibit poor tissue adhesion in moist,bleeding wounds due to the hydration layer at the tissue–hydrogel interfaces,resulting in insufficient *** this study,we developed a novel,biocompatible,wet tissue adhesive powder hydrogel consisting of dextran-aldehyde(dex-ald)and gelatin for the regeneration of *** powder absorbs the interfacial tissue fluid and buffer solution on the tissue,spontaneously forms a hydrogel,and strongly adheres to the tissue via various molecular interactions,including the Schiff base *** particular,the powder composition with a 1:4 ratio of dex-ald to gelatin exhibited optimal characteristics with an appropriate gelation time(258 s),strong tissue adhesion(14.5 kPa),and ***-ald/gelatin powder hydrogels presented strong adhesion to various organs and excellent hemostasis compared to other wet hydrogels and fibrin glue.A mouse VML injury model revealed that the dex-ald/gelatin powder hydrogel significantly improved muscle regeneration,reduced fibrosis,enhanced vascularization,and decreased ***,our wet-adhesive powder hydrogel can serve as an effective platform for repairing various tissues,including the heart,muscle,and nerve tissues.

关键词： Powder Hydrogel Wet-adhesive Skeletal muscle regeneration

Giant hepatic neuroendocrine tumor

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Hepatobiliary Surgery and Nutrition 2021年第5期10卷 746-747页

作者： Seong Hoon kim jangho Park National Cancer Center Goyang-siKorea

A 47-year-old female was presented with progressive abdominal distension and dyspnea for 2 *** height was 152.3 cm and body weight was 53.9 *** was completely confined to bed and could not perform any selfcare *** serum total bilirubin level was 6.4 mg/*** imaging showed multiple hepatic tumors involving a whole liver and compressing inferior vena cava and other organs(Panel A).

关键词： organs female liver

Combinations of nerve blocks in surgery for post COVID-19 pulmonary sequelae patient:A case report and review of literature

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World Journal of Clinical Cases 2023年第5期11卷 1198-1205页

作者： Yehun Jin Suzie Lee Daehyun kim jangho Hur Woosik Eom Department of Anesthesiology and Pain Medicine National Cancer CenterGoyang-si 10408Gyeonggi-doSouth Korea

BACKGROUND Regional anesthesia is a promising method in patients with post coronavirus disease 2019(COVID-19)pulmonary sequelae for preserving pulmonary function and preventing postoperative pulmonary complications,compared with general *** SUMMARY We provided surgical anesthesia and analgesia suitable for breast surgery by performing pectoral nerve block type II(PECS-II),parasternal,and intercostobrachial nerve blocks with intravenous dexmedetomidine administration in a 61-year-old female patient with severe pulmonary sequelae after *** Sufficient analgesia for 7 h was provided via PECS-II,parasternal,and intercostobrachial blocks perioperatively.

关键词： Analgesia Anesthesia COVID-19 Regional anesthesia Nerve block Case report