J.Y. Choi

ORCID: 0000-0002-0400-7272
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About
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Research Areas
  • Superconducting Materials and Applications
  • Particle accelerators and beam dynamics
  • Magnetic confinement fusion research
  • Piezoelectric Actuators and Control
  • Thermal Analysis in Power Transmission
  • Spacecraft and Cryogenic Technologies
  • Advanced MEMS and NEMS Technologies
  • Characterization and Applications of Magnetic Nanoparticles
  • Nanoparticle-Based Drug Delivery
  • Microfluidic and Bio-sensing Technologies
  • Advanced Fiber Optic Sensors
  • Particle Accelerators and Free-Electron Lasers

Daegu Gyeongbuk Institute of Science and Technology
2023

Korea Basic Science Institute
2003-2006

Samsung (South Korea)
2002

Superparamagnetic iron oxide nanoparticles (SPIONs) have been widely employed in biomedical fields, including targeted delivery of antitumor therapy. Conventional magnetic tumor targeting has used simple static fields (SMFs), which cause SPIONs to linearly aggregate into a long chain-like shape. Such agglomeration greatly hinders the intracellular tumors, thus reducing therapeutic efficacy. In this study, we investigated enhancement uptake through application rotating (RMFs). Based on...

10.1021/acsnano.3c03780 article EN ACS Nano 2023-07-21

The aim of the Korea superconducting tokamak advanced research (KSTAR) project is to develop a steady-state-capable for establishing scientific and technological basis an attractive fusion reactor. Since KSTAR mission includes achievement operation, use coils obvious choice magnet system. system consists 16 toroidal field (TF) 14 poloidal (PF) which include 8 central solenoid coils. Both TF PF coil systems internally-cooled cable-in-conduit conductors (CICC). provides magnetic 3.5 T at...

10.1088/0029-5515/45/8/003 article EN Nuclear Fusion 2005-07-26

A superconducting cable-in-conduit conductor (CICC) is adopted for the Korea Superconducting Tokamak Advanced Research (KSTAR) magnet system which consists of 16 TF coils and 14 PF coils. The KSTAR Magnet uses two different types CICCs-Nb/sub 3/Sn cable with Incoloy 908 conduit NbTi 316LN stainless-steel conduit. continuous CICC jacketing developed fabrication tube-mill process, forming, welding, sizing squaring procedures. design specification CICCs process described. welding strip joint...

10.1109/tasc.2002.1018473 article EN IEEE Transactions on Applied Superconductivity 2002-03-01

This paper presents the highly reliable and wafer level vacuum packaged vertical micro-gyroscope with decoupled vibrating structures. In order to increase sensitivity by exact tuning resonant modes without instability problem, we devised two torsion springs for sensing mode in addition four driving attached outer gimbal. For fabrication of proposed gyroscope high aspect ratio packaging, used mixed micro-machining process which has merits a conventional surface bulk process. The measured...

10.1109/robot.2001.933145 article EN 2002-11-13

The KSTAR (Korea Superconducting Tokamak Advanced Research) superconducting magnet system consists of 16 TFs (Toroidal Field) and 14 PFs (Poloidal coils. Internally-cooled cabled superconductors will be used for the system. systems adopt a CICC (Cable-In-Conduit Conductor) type conductor. TF uses Nb/sub 3/Sn cable with Incoloy 908 conduit. For fabrication 1/spl sim/3 CICC, cables have been fabricated has length 640 m diameter 22.3 mm. A continuous jacketing is developed tube-mill process,...

10.1109/tasc.2003.812752 article EN IEEE Transactions on Applied Superconductivity 2003-06-01

The KSTAR (Korea Superconducting Tokamak Advanced Research) superconducting magnet system adopts a CICC(Cable-In-Conduit Conductor) type conductor. It consists of 16 TF (Toroidal Field) coils and 14 PF (Poroidal it also uses two different types CICCs- <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$ Nb_3 Sn$</tex> cable with Incoloy 908 conduit NbTi 316LN stainless-steel conduit. A special CICC jacketing is developed for the fabrication:...

10.1109/tasc.2006.870530 article EN IEEE Transactions on Applied Superconductivity 2006-06-01

Summary form only given, as follows. The Mission of Korea Superconducting Tokamak Advanced Research (KSTAR) Project is to develop a steady-state-capable advanced superconducting tokamak for establishing scientific and technological basis an attractive fusion reactor. Because the KSTAR mission includes achievement operation, use coils obvious choice magnet system. system consists 16 TF (Toroidal Field) 14 PF (Poloidal coils. Both coil internally-cooled Cable-In-Conduit Conductors (CICC)...

10.1109/plasma.2003.1228910 article EN 2003-12-22

The mission of Korea Superconducting Tokamak Advanced Research (KSTAR) project is to develop an advanced steady-state superconducting tokamak for establishing a scientific and technological basis attractive fusion reactor. Because one the KSTAR achieve operation, use coils obvious choice magnet system. system consists 16 Toroidal Field (TF) 14 Poloidal (PF) coils. Internally-cooled Cable-In-Conduit Conductors (CICC) are put into in both TF PF coil systems. provides field 3.5 T at plasma...

10.1088/1009-0630/6/5/003 article EN Plasma Science and Technology 2004-10-01

The KSTAR (Korea Superconducting Tokamak Advanced Research) superconducting magnet system which consists of 16 TF coils and 14 PF adopts a CICC (Cable-In-Conduit Conductor) type conductor. uses two different types CICCs-Nb/sub 3/Sn cable with Incoloy 908 conduit NbTi 316LN stainless-steel conduit. A continuous jacketing is developed for the fabrication tube-mill process. It forming, welding, sizing squaring procedures. welding condition CICCs process described. repair also discussed.

10.1109/tasc.2005.849110 article EN IEEE Transactions on Applied Superconductivity 2005-06-01
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