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- Visiting from Shanghai University (9/26 17:00~)
- On September 26th 2016, Shanghai University participated in the 8th International Conference on Recent Progress in Graphens/2D research (September 25 - 29th, 2016, SKKU Seoul , http://www.rpgr2016.org/) and discussed about the joint research center at SKKU Natural Sciences Campus in collaboration with Shanghai University and corporates in Shanghai City. Through this meeting, SKKU-SHU will proceed the Technology Transferring projects as the first step.
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- 작성일 2016-09-30
- 조회수 7362
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- Prof. Byungkwon LIM, New synthesis of fabrication of Silver Nanowires without the use of any organic stabilizers
- Prof. Byungkwon LIM and two doctorate level students, Hwansu SIM and Shingyu BOK, successfully demonstrated a new synthesis of fabrication of Silver (Ag) Nanowires (NWs) without the use of any organic stabilizers. Ag NWs have attracted great interest owing to their high electrical conductivity, solution processability, and potential for applications in highly conductive transparent or stretchable electrodes. However, organic capping molecules for the production of Ag NWs introduce insulating layers around each nanowire, thus dramatically increasing contact resistance between them and reducing efficiency in electrode applications. A typical procedure for removing organic capping layers from the NWs surface involves many cycles of the precipitation and re-dispersion of NWs in a good solvent for capping molecules, which is tedious and time consuming. The research team resolved the problems by using a little amount of metal salt instead of organic stabilizer. The heterogeneous nucleation and growth of Ag NWs initially formed AgCl particles, combined with oxidative etching of unwanted silver nanoparticles, resulted in the selective formation of long NWs with an average length of about 40 mm in the absence of a capping or stabilizing effect provided by surface-adsorbing molecules. These organic-stabilizer-free Ag NWs were directly used for the fabrication of high-performance transparent or stretchable electrodes without a complicated process for the removal of capping molecules from the NW surface. This research was published in the journal Angewandte Chemie under the subject name of Organic-Stabilizer-Free Polyol Synthesis of Silver Nanowires for Electrode Applications.
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- 작성일 2016-09-22
- 조회수 6827
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- Prof. Doosung LEE, pH-Responsive Biodegradable Polymeric Micelles for MR Imaging in Detection of Cerebral Ischemic Area
- Cerebral Ischemic Stroke mostly occurs in elderly people, and is a condition caused when there isn’t enough blood flow to the brain to meet metabolic demand. Due to high expenses and the sudden decline of people's quality of life after having a stroke, early diagnosis is considered the most important. However, the research on MRI probes and targeted therapy still remains in the early stages. To find possible treatments, several studies and the development of drugs are ongoing, as well as the ways to increase the impact of these drugs. Creating new nanocarrier systems using biodegradable polymeric micelles is one of the possible ways to increase drug effectiveness. This research is about new intelligent nanocarrier systems for magnetic resonance imaging (MRI), based on biodegradable polymeric micelles in order to detect cerebral ischemic areas. A novel type of pH-responsive biodegradable copolymer was developed based on methyloxy-poly(ethylene glycol)-block-poly[dopamine-2-(dibutylamino) ethylamine-L-glutamate] (mPEG-b-P(DPA-DE)LG), and applied to act as an intelligent nanocarrier system for magnetic resonance imaging (MRI). The mPEGb-P(DPA-DE)LG copolymer was synthesized by a typical ring opening polymerization of N-carboxyanhydrides (NCAs-ROP) using mPEG-NH2 as a macroinitiator, and two types of amine-terminated dopamine groups and pH-sensitive ligands were grafted onto a side chain by a sequential aminolysis reaction. This design greatly benefits from the addition of the dopamine groups to facilitate self-assembly, as these groups can act as high-affinity anchors for iron oxide nanoparticles, thereby increasing long-term stability at physiological pH. The mPEG moiety in the copolymers helped the nanoparticles to remain well dispersed in an aqueous solution, and pH-responsive groups could control the release of hydrophobic Fe3O4 nanoparticles in an acidic environment. The particle size of the Fe3O4-loaded mPEG-b-P(DPA-DE) LG micelles was measured by dynamic light scattering (DLS) and cryo-TEM. The superparamagnetic properties of the Fe3O4-loaded mPEG-b-P(DPA-DE)LG micelles were confirmed by a superconducting quantum interference device (SQUID). T2-weighted magnetic resonance imaging (MRI) of Fe3O4-loaded mPEG-b-P(DPA-DE)LG phantoms exhibited enhanced negative contrast with an r2 relaxivity of approximately 106.7 mM−1 s−1. To assess the ability of the Fe3O4-loaded mPEG-P(DE-DPA)LG micelles to act as MRI probes, we utilized a cerebral ischemia disease rat model with acidic tissue. We found that a gradual change in contrast in the cerebral ischemic area could be visualized by MRI after 1 hour, and maximal signal loss was detected after 24 h post-injection. These results demonstrated that the Fe3O4-loaded mPEG-b-P(DPA-DE)LG micelles can act as pH-triggered MRI probes for diagnostic imaging of acidic athological tissues. These results suggest that, due to their unique acid-triggered abilities, the pH-responsive mPEG-b-P(DPA-DE)LG copolymers may have more applications in the biomedical field from MR diagnostic imaging, to therapeutics for other acidic pathologic tissues. The result of this research was published in the journal nanoscale of Royal Society of Chemistry, UK.
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- 작성일 2016-09-20
- 조회수 7431
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- Prof. Tae Sung KIM (Mechanical), Equipment for Analyzing Real-time Defects on Semiconductor and Display
- Prof. Tae Sung KIM (Mechanical), Equipment for Analyzing Real-time Defects on Semiconductor and Display Have Been Commercialized Equipment that analyzes the defects in semiconductor and display during the process of production has been commercialized, and is expected to increase profitability. The Korea Research Institute of Standards and Science (KRISS) revealed that real-time defect analysis equipment, PCDS, has recently been commercialized and supplied to one of the major companies in the display field. PCDS was developed by Prof. Tae Sung KIM (School of Mechanical Engineering) and his research team, and KRISS led by Dr. Sang Woo KANG. The equipment is able to analyze in real-time, the size, shape, and contents of nano particles floating in the vacuum state. Because nano particles often contaminate a device and become a cause of defects, analysis is necessary. In the past, nano particles were analyzed at the stage of completion because there was a limitation in using analyzing equipment in the vacuum state. If defects were found, all devices would be discarded. However, PCDS can now analyze nano particles even in the high vacuum state. The Industry expects that business will expand to ₩50 billion won within the next 5 years.
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- 작성일 2016-09-13
- 조회수 6963
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- Graduation Ceremony in August, 2016
- The College of Engineering Graduation Ceremony was held on August 24, 2016 at the Auditorium in Natural Sciences Campus. Total 265 students received the certificate of graduation. The congratulatory speeches from Dean SONG, Sung-Jin, president of an alumni association of the College of Engineering, LEE, Dong-Woo, parent representative KIM, Myung-Hwa and student representative KIM, Yong-Baek were delivered. 9 students graduated summa cum laude with a degree in each school and department.
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- 작성일 2016-09-02
- 조회수 6695
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- SKKU PACE Team won excellence awards at 2016 PACE Global Forum
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SKKU PACE Team won excellence awards at 2016 PACE Global Forum The 2016 PACE Global Annual Forum is hosted by the University of Cincinnati along with the GM PACE Team in Warren, MI during the week of July 25 – 28th. In this forum, our PACE Team won award for excellence in CIC("Intelligent Cockpit for Future Vehicles", 2nd place) and RSMS(“Industrial Design", "Customer Insight", "Manufacturing Engineering", 3rd place for each part). - Supervisor: Han-soo Han and Sang-do Noh - Infromation about The 2016 PACE Global Annual Forum
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- 작성일 2016-08-30
- 조회수 6734
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- Prof. Jong Wook Bae(Chemical), developed the conversion CO2 to Clean fuel technology.
- Prof. Jong Wook Bae(Chemical), developed the conversion CO2 to Clean fuel technology. Prof. Jong wook Bae and his fellows developed the conversion CO2 to Clean fuel technology using 2-component mixing catalyst.
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- 작성일 2016-08-23
- 조회수 6482
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- 2016-2 NANOTEC(Thailand)-SKKU Program
- 2016-2 NANOTEC(Thailand)-SKKU Program, 1 Post Doctor, 5 in the Doctor's Course Six students belonging to NANOTEC (Thailand’s Nanotechnology Center) will study at SKKU’s SAINT (Sungkyun Advanced Institute of Nano Technology) from the 2nd semester of 2016, in order to exchange scientific knowledge and to learn SKKU’s advanced engineering education/research. Among these students, is one postdoc researcher, while the other students are under the doctoral program. Thailand’s government is showing great interest towards SKKU’S program; Her Royal Highness Crown Princess Maha Chakri Sirindhorn invited the students to her official residence and held a sending event for them. She mentioned that “This program is a very good opportunity where talented students of Thailand can learn advanced education and research in engineering at SKKU. Devote yourselves to study.” NANOTEC-SKKU collaboration started in 2015 with 9 students and applying students in the future is expected to increase due to the high satisfaction rate of the program. List of Students as follows: Postdoc: Dr. Lunjakorn Amornkitbamrung Doctoral: Arthitiya Prasertnavakul, Dulyawat Doonyapisut, Weerawat To-a-ran, Sillawan Aschakulporn, Porawin Charoennan - Post-doctor : Dr. Lunjakorn Amornkitbamrung - Doctor's course : Arthitiya Prasertnavakul, Dulyawat Doonyapisut, Weerawat To-a-ran, Sillawan Aschakulporn, Porawin Charoennan
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- 작성일 2016-08-05
- 조회수 6559
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- Prof.Dong June, CHUNG(Chemical) attended Project achievement presentation of Hazardous materials detecting project group
- Prof. Dongjune, Chung(Chemical) attended Project achievement presentation of Hazardous materials detecting project group 2016 Final year project achievement presentation of Hazardous materials detecting project group Supported by Disaster safety flat form development project under Ministry of Science, ICT and Future Planning was held on 21th July at Songdo ConvensiA, Incheon.
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- 작성일 2016-08-03
- 조회수 6432