Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Gwangseok, Hwang"'
Autor:
Ohmyoung Kwon, Gwangseok Hwang
Publikováno v:
International Journal of Thermal Sciences. 108:81-88
With the rapid reduction in the characteristic length of electronic devices down to tens of nanometers in recent times, the characterization of self-heating in nanotransistors fabricated on silicon-on-insulator (SOI) substrates has become a major cha
Autor:
Ohmyoung Kwon, Gwangseok Hwang
Publikováno v:
Nanoscale. 8:5280-5290
Using null-point scanning thermal microscopy (NP SThM), we have measured and analyzed the size dependence of the thermal conductivity of graphene. To do so, we rigorously re-derived the principal equation of NP SThM in terms of thermal property measu
Publikováno v:
Journal of Nanoscience and Nanotechnology. 15:9077-9082
In the development of graphene-based electronic devices, it is crucial to characterize the thermal contact resistance between the graphene and the substrate precisely. In this study, we demonstrate that the thermal contact resistance between CVD-grow
Autor:
Gwangseok Hwang, Hong Goo Kim, Jaehun Chung, Joon Sik Lee, Kichul Yoon, Ohmyoung Kwon, Kenneth D. Kihm
Publikováno v:
Carbon. 76:77-83
Despite the importance of the accurate measurement of the thermal conductivity of graphene, deviations in previous data are still quite large due to the low signal-to-noise ratio in the measurement of graphene temperature, the uncertainties in the me
Publikováno v:
Ultramicroscopy. 171
With the vigorous development of new nanodevices and nanomaterials, improvements in the quantitation and resolution of the measurement of nanoscale energy transport/conversion phenomena have become increasingly important. Although several new advance
Publikováno v:
Journal of nanoscience and nanotechnology. 15(11)
In the development of graphene-based electronic devices, it is crucial to characterize the thermal contact resistance between the graphene and the substrate precisely. In this study, we demonstrate that the thermal contact resistance between CVD-grow
Autor:
Gwangseok Hwang, Sung Jin Kim, Jungwon Kim, Kyungbae Park, Hayeong Kim, Ohmyoung Kwon, Woochul Kim
Publikováno v:
Applied Physics Letters. 108:071907
With the increasing application of nanomaterials in the development of high-efficiency thermoelectric energy conversion materials and electronic devices, the measurement of the intrinsic thermal conductivity of nanomaterials in the form of nanowires
Publikováno v:
2012 12th IEEE International Conference on Nanotechnology (IEEE-NANO).
For graphene-based electronic devices, it is crucial to measure and analyze the thermal contact resistance between the graphene and the insulating layer. Herein, we measure the thermal contact resistance between CVD-grown graphene and a SiO 2 layer u
Publikováno v:
ACS nano. 5(11)
Because of its high spatial resolution, scanning thermal microscopy (SThM) has been developed quite actively and applied in such diverse areas as microelectronics, optoelectronics, polymers, and carbon nanotubes for more than a decade since the 1990s
Nanoscale range finding of subsurface structures by measuring the absolute phase lag of thermal wave
Autor:
Jaehun Chung, Joon Sik Lee, Gwangseok Hwang, Seungho Park, Kyeongtae Kim, Ohmyoung Kwon, Young Ki Choi
Publikováno v:
The Review of scientific instruments. 81(5)
The need for a subsurface imaging technique to locate and characterize subsurface defects in multidimensional micro- and nanoengineered devices has been growing rapidly. We show that a subsurface heater can be located accurately using the phase lag o