ABOUT US

Chung-Hyeon Ryu (Ph.D. course)


Non-destructive evaluation using THz Nanoink fabrication for printed -electronics Flash light sintering


E-mail : rch5755@gmail.com

Graduate Student in Hanyang University
Ph.D. course of Multifunctional Composite Design and Manufacturing Laboratory
Department of Mechanical Engineering, HanyangUniversity
Engineering center, 311, 17 Haengdang-dong, Seoul133-791, Republic of Korea


Education
M.S. Mechanical Engineering HanYang   2013~  
B.S. Mechanical Engineering HanYang   2007~2013  
         
Jinju High School   2003~2006  
 
Publication

 International Journal Papers (Published 3, Accepted 1, Submitted 0)
 1. Yoon-Jin Kim, Chung-Hyeon Ryu, Sung-Hyeon Park and Hak-Sung Kim*, "The effect of poly (N-vinylpyrrolidone) (PVP) molecular weight on flash light sintering of copper nanoink", Thin Solid Films, 2014, Vol 570, pp.114-122
 2. Do-Hyoung KimChung-Hyeon Ryu, Sung-Hyeon Park and Hak-Sung Kim*, " Nondestructive evaluation of hidden damage in a glass fiber reinforced plastic using terahertz spectroscopy", Composite Structures, 2017, Vol. 4, Issue 2, pp. 211-219
 3. Chung-Hyeon Ryu, Sung-Hyeon Park, Do-Hyoung Kim and Hak-Sung Kim*, "Nondestructive evaluation of hidden multi-delamination in a glass fiber reinforced plastic composite using terahertz spectroscopy", Composite Structures, 2016, Vol 156, pp. 338-347
 4. 
Chung-Hyeon Ryu, Sung-Jun Joo and Hak-Sung Kim*, "Two-step flash light sintering of copper nanoparticle ink to remove substrate warping", Applied Surface Science, 2016, Vol 384, pp.182-191
 5. Supriya A. Patil, Chung-Hyeon Ryu and Hak-Sung Kim*, "Synthesis and Characterization of Copper Nanoparticles (Cu-Nps) using Rongalite as Reducing Agent and photonic sintering of Cu-Nps ink for printed electronics", International Journal of Precision Engineering and Manufacturing-green Technology, 2017 (Accepted)
6. Chung-Hyeon Ryu, Sung-Jun Joo, Hak-Sung Kim, "Flash light sintering of Cu nano/micro-ink assisted with heating and vacuum holding of substrate for warpage free printed electronic circuit", ACS Applied Materials & Interfaces, 2017(Submitted)


 Patents (3)
1. 김학성, 정완호, 황현준, 유충현, 주성준, "광소결을 이용한 디지타이저 연성인쇄회로기판 및 이의 제조방법", 국내특허등록, 등록번호 10-1734765, 등록일 May 2nd 2017.
 2. 김학성, 전은범, 유충현, 주성준, "구리 나노잉크의 다중 광소결방법 및 이를 이용하여 패턴화된 구리 나노잉크", 국내특허출원, 출원번호 10-2015-0023849, 출원일 February 17th 2015.
 3. 김학성, 정완호, 유충현, 주성준, 황현준, "백색광을 이용한 인쇄형 디지타이저 FPCB(Flexible Printed Circuits Board) 및 이의 제조방법", 국내특허출원, 출원번호 10-2016-0055260, 출원일 May 04th 2016.
 4. 김학성, 유충현, 주성준, 유명현, "전극의 소결 균일도 향상 및 기판 손상 최소화를 위한 백색광 조사 장치", 국내특허출원, 출원번호 10-2016-0068704, 출원일 June 02nd 2016.

 Conference (Presentation 10)
 1. 유충현, 황현준, 김윤진, 김학성*, "구리 나노 잉크 광 소결에 대한 PVP 분자량의 영향", 한국정밀공학회 추계학술대회, Nov 2013. (Presentation)
 2. 김학성*박성현, 김도형, 유충현, 김동현, "테라헤르츠파를 이용한 복합재료 및 반도체 잠닉손상 비파괴 검사법", 2013한국비파괴검사학회 추계학술대회, Oct 2013(Presentation)
 3. 유충현, 김도형, 김학성*, "테라헤르츠파를 이용한 복합재료의 잠닉손상 비파괴평가법 연구", 대한기계학회 재료 및 파괴부문 춘계학술대회, Apr 2014. (Presentation)
 4. Chung-Hyeon Ryu, Sung-Hyeon Park, Yoon-Jin Kim and Hak-Sung Kim*, "The effect of poly (N-vinylpyrrolidone) (PVP) molecular weight on flash light sintering of copper nanoink", Spring World Congress on Engineering and Technology 2014 (SCET 2014), Apr 2014(presentation)
 5. Do-Hyoung Kim, Chung-Hyeon Ryu and Hak-Sung Kim*, "Nondestructive evaluation of hidden damage in the fiber reinforced composites using terahertz spectroscopy", Interternational Conference on Mechanics of Composites 2014 (MECHCOMP 2014) Jun 2014. (Presentation)
 6. 유충현, 김학성*, "구리 나노입자의 광소결에 의한 기판의 휨 현상 저감 연구", 대한기계학회 추계학술대회, Nov 2014 (Presentation)
 7. Chung-Hyeon Ryu, Do-Hyoung Kim, Kyung-Young Jhang and Hak-Sung Kim*, "Nondestructive evaluation of hidden multiple-delamination in a glass fiber reinforced plastic using terahertz spectroscopy", International Conference on Advances in Composite Materials and Structures(CACMS), Apr 2015(Presentation)
 8.
 Chung-Hyeon Ryu, Do-Hyoung Kim, and Hak-Sung Kim*, "Nondestructive evaluation of hidden damage in a glass fiber reinforced plastic using terahertz spectroscopy", International Conference on Nondestructive Testing and Evaluation (ICNTE), May 2015(Presentation)
 9. Do-Hyoung Kim, Chung-Hyeon Ryu, Kyung-Young Jhang and  Hak-Sung Kim* , "Nondestructive evaluation technique of multiple-delaminations in glass fiber reinforced composites using terahertz spectroscopy", International Conference on Composite Structure(ICCS), Jun 2015(Presentation)
10. 유충현, 주성준, 김학성, "Flash light sintering of Cu nano/micro ink for warpage-free Cu electrode with high conductivity using substrate vacuum heating", 대한기계학회 April 2017
11. 유충현, 주성준, 김학성, "Substrate heating assisted flash light sintering of Cu nano/micro-ink for warpage reduction and high conductivity", ISGMA 2017, June 2017(Presentation) 

Awards and Honors

National Science&Engineer Scholarship   한국과학재단  2007