Zobrazeno 1 - 10
of 287
pro vyhledávání: '"Kun-Hong Lee"'
Autor:
Dong Su Bae, Chunghun Kim, Hunsu Lee, Omar Khater, Keun Su Kim, Homin Shin, Kun-Hong Lee, Myung Jong Kim
Publikováno v:
Nano Convergence, Vol 9, Iss 1, Pp 1-10 (2022)
Abstract Highly crystalline and few-walled boron nitride nanotubes (BNNTs) had been synthesized by laser ablation using only ammonia borane as a precursor. As a molecular precursor, ammonia borane supplied both B and N atoms with a ratio of 1:1, and
Externí odkaz:
https://doaj.org/article/c9c979192cee45adace9e2e563bf72a2
Autor:
Hyunjung Cho, Kun-Hong Lee, Dong-Myeong Lee, Sung-Hyun Lee, Haemin Lee, Jaegeun Lee, Eugene Oh
Publikováno v:
Carbon. 182:185-193
The information about CNT lengths is essential to realize the unique properties of CNTs at the macroscopic scale. Here, we experimentally demonstrate a short-cut method to characterize the average length of carbon nanotubes (CNTs) based on the isotro
Publikováno v:
Carbon. 173:782-791
We propose a reliable and accurate method that uses ultraviolet–visible–near infrared absorbance to measure the isotropic-cloud point (ICP) of carbon nanotube (CNT)/chlorosulfonic acid (CSA) solutions. This information is necessary to improve und
Autor:
Hyunjung Cho, Jinwoo Lee, Haemin Lee, Sung-Hyun Lee, Junbeom Park, Cheol-Hun Lee, Kun-Hong Lee
Publikováno v:
Materials, Vol 11, Iss 11, p 2170 (2018)
To increase the strength of carbon nanotube (CNT) fibers (CNTFs), the mean size of voids between bundles of CNTs was reduced by wet-pressing, and the CNTs were cross-linked. Separate and simultaneous physical (roller pressing) and chemical methods (c
Externí odkaz:
https://doaj.org/article/d4c7230f3bc14cb1a1133343c38429ac
Publikováno v:
RSC Advances. 11:38152-38160
Macroscopic assemblies of carbon nanotubes (CNTs) usually have a poor alignment and a low packing density due to their hierarchical structure. To realize the inherent properties of CNTs at the macroscopic scale, the CNT assemblies should have a highl
Autor:
Dongju Lee, Seo Gyun Kim, Seungki Hong, Cristina Madrona, Yuna Oh, Min Park, Natsumi Komatsu, Lauren W. Taylor, Bongjin Chung, Jungwon Kim, Jun Yeon Hwang, Jaesang Yu, Dong Su Lee, Hyeon Su Jeong, Nam Ho You, Nam Dong Kim, Dae-Yoon Kim, Heon Sang Lee, Kun-Hong Lee, Junichiro Kono, Geoff Wehmeyer, Matteo Pasquali, Juan J. Vilatela, Seongwoo Ryu, Bon-Cheol Ku
Publikováno v:
Science advances. 8(16)
Theoretical considerations suggest that the strength of carbon nanotube (CNT) fibers be exceptional; however, their mechanical performance values are much lower than the theoretical values. To achieve macroscopic fibers with ultrahigh performance, we
Publikováno v:
Carbon. 167:181-187
The yield and length of carbon nanotube (CNT) forests were increased by using regenerated quartz tubes. Carbonaceous impurities remained in the walls of the regenerated quartz tube. When CNT forests were synthesized in regenerated quartz tubes, the c
Autor:
Zhe Wang, Henry A. Colorad, Zhan-Hu. Guo, Hansang. Kim, Cho-Long Park, H. Tomas Hahn, Sang-Gi. Lee, Kun-Hong Lee, Yu-Qin Shang
Publikováno v:
Materials Research, Vol 15, Iss 4, Pp 510-516 (2012)
A brand-new type of multifunctional nanocomposites with high DC conductivity and enhanced mechanical strength was fabricated. Ionic liquid functionalized Carbon Nanotubes (CNTs-IL) were embedded into epoxy matrix with covalent bonding by the attached
Externí odkaz:
https://doaj.org/article/d19e5c45e4dd427f94b967b4742a946e
Autor:
Kun-Hong Lee, Junbeom Park, Dong-Myeong Lee, Sung-Hyun Lee, Seung Min Kim, Hyeon Su Jeong, Jaegeun Lee
Publikováno v:
Carbon. 152:151-158
The mechanical behaviors of carbon nanotube yarn (CNTY) can be described as collective mechanical behaviors of the components that comprise its hierarchical structures. The internal structures and mechanical behaviors of CNTYs closely resemble those
Publikováno v:
Carbon. 152:482-488
To increase the length and coherence of carbon nanotube (CNT) forests that are grown by chemical vapor deposition, we implant Fe ions into an Al2O3 supporting layer to weaken the gradient of Fe concentration when Fe catalyst layer is deposited on it.