Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Jun Mok Ha"'
Autor:
Jun Mok Ha, Seoung Ho Lee, Daehyeon Park, Young Jun Yoon, In Mok Yang, Junhyeok Seo, Yong Seok Hwang, Chan Young Lee, Jae Kwon Suk, Jun Kue Park, Sunmog Yeo
Publikováno v:
Discover Nano, Vol 19, Iss 1, Pp 1-9 (2024)
Abstract We present the first work of the synthesis mechanism from graphene quantum dots (GQDs) to carbon nanotubes (CNTs) by an ion-sputtering assisted chemical vapor deposition. During the annealing process, a Pt thin film deposited by the ion-sput
Externí odkaz:
https://doaj.org/article/40d22f9b92e64c368f0b2abc51db94f0
Autor:
Na Eun Lee, Cho Rong Kim, Jun Mok Ha, Sunmog Yeo, Young Jun Yoon, Jae Kwon Suk, Seoung Ho Lee, Yong-Seok Hwang, Chan Young Lee
Publikováno v:
Carbon. 186:28-35
A synthesis and patterning process of luminescent graphene quantum dots (GQDs) is highly desirable in applications to industrial- and bio-fields. In this paper, a novel strategy to obtain GQDs is proposed and demonstrated by an ion-beam assisted chem
Autor:
Maengjun Kim, Myung-Hwan Jung, Jun Mok Ha, Jaekwon Suk, Hye-ran Jeon, Jae S. Lee, Dong-Seok Kim, Chan Young Lee, Chorong Kim, Yong-Seok Hwang, Jun Kue Park, Won-Je Cho, Sunmog Yeo
Publikováno v:
Journal of the Korean Physical Society. 77:395-398
We have developed a real-time dose monitoring system for a low-energy ion-beam facility. Before we developed the monitoring system, the system had given a substantial error of ±23% when we irradiated an ion beam with a dose as much as 3.0 × 1016 cm
Autor:
Chorong Kim, Chan Young Lee, Jun Mok Ha, Won-Je Cho, Dong-Seok Kim, Yong-Seok Hwang, Jae Kwon Suk, Sunmog Yeo
Publikováno v:
RSC Advances. 10:28603-28607
H+ irradiation increases the surface hardness of polycarbonate. Nano indentation measurement shows that the hardness increases up to 3.7 GPa at the dose of 5 × 1016 # cm−2 and at the irradiation energy of 150 keV. In addition, the hardness increas
Autor:
Sunmog, Yeo, Won-Je, Cho, Dong-Seok, Kim, Chan Young, Lee, Yong Seok, Hwang, Jae Kwon, Suk, Chorong, Kim, Jun Mok, Ha
Publikováno v:
RSC advances. 10(48)
H
Publikováno v:
RSC Advances. 6:44788-44793
We present a simple and convenient route to freestanding graphene nanosheets and large-area/patterned graphene nanofilms by thermal annealing of an indium (In) and graphite mixture. In particles mixed with graphite powder catalytically oxidize the gr
Publikováno v:
Journal of nanoscience and nanotechnology. 17(4)
There are various different approaches in synthesizing graphene including chemical vapor deposition (CVD) and solid-phase method, where gas or solid type carbon source, to be converted into graphene, interacts with transition metals such as nickel an
Publikováno v:
ACS applied materialsinterfaces. 8(30)
The effects of electron-beam irradiation on the organic semiconductor rubrene and its application as a dosimeter was investigated. Through the measurements of photoluminescence and the ultraviolet photoelectron spectroscopy, we found that electron-be
Publikováno v:
Nanoscale Research Letters
We have presented a mechanism to explain why the resulting oxide morphology becomes a porous or a tubular nanostructure when a zircaloy is electrochemically anodized. A porous zirconium oxide nanostructure is always formed at an initial anodization s
Publikováno v:
Nanoscale Research Letters
Silicon (Si) nanostructures that exhibit a significantly low reflectance in ultraviolet (UV) and visible light wavelength regions are fabricated using a hydrogen etching process. The fabricated Si nanostructures have aperiodic subwavelength structure