Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Choong Sun Kim"'
Publikováno v:
Universe, Vol 6, Iss 3, p 40 (2020)
In the 2-spinor formalism, the gravity can be dealt with curvature spinors with four spinor indices. Here we show a new effective method to express the components of curvature spinors in the rank-2 4 × 4 tensor representation for the gravity in a lo
Externí odkaz:
https://doaj.org/article/5b5bc0e0c6e94a52895adc4dd632c3cd
Publikováno v:
Symmetry, Vol 7, Iss 2, Pp 726-773 (2015)
Some of the outstanding questions of particle physics today concern the neutrino sector, in particular whether there are more neutrinos than those already known and whether they are Dirac or Majorana particles. There are different ways to explore the
Externí odkaz:
https://doaj.org/article/9b1629fb2060446096dec40b3a175a80
Autor:
In Ki Hong, Choong Sun Kim
Publikováno v:
Universe, Vol 5, Iss 6, p 135 (2019)
By using complex quaternion, which is the system of quaternion representation extended to complex numbers, we show that the laws of electromagnetism can be expressed much more simply and concisely. We also derive the quaternion representation of rota
Externí odkaz:
https://doaj.org/article/5ed3e29cd6c94eed9829fad96afd1348
Autor:
Gyusoup Lee, Garam Choi, Choong Sun Kim, Yong Jun Kim, Hyeongdo Choi, Seongho Kim, Hyo Seok Kim, Won Bo Lee, Byung Jin Cho
Publikováno v:
Applied Sciences, Vol 7, Iss 10, p 1015 (2017)
Thermoelectric power generation using human body heat can be applied to wearable sensors, and various applications are possible. Because the thermoelectric generator (TEG) is highly dependent on the thermoelectric material, research on improving the
Externí odkaz:
https://doaj.org/article/fa85b9fe476246f79d34c9c58d3694b9
Autor:
Ockkyun Oh, Seong Ho Kim, Taeyeon Kim, Gyusoup Lee, Byung Jin Cho, Hyeongdo Choi, Yongjun Kim, Choong Sun Kim
Publikováno v:
Soft Robotics. 7:736-742
In this study, we introduce a haptic communication method using two-dimensional (2D) arrayed thermal haptic module. The 2D thermal haptic module delivers real-time information to user through the thermoception of the user's skin. Such 2D thermal hapt
Autor:
Jun Sik Kim, Kyoungsoo Yi, Seung-Won Kim, Choong Sun Kim, Youngsu Cha, Sung Hee Kim, Byung Jin Cho
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
Scientific Reports
Scientific Reports
Thermal perception is essential for the survival and daily activities of people. Thus, it is desirable to realize thermal feedback stimulation for improving the sense of realism in virtual reality (VR) for users. For thermal stimulus, conventional sy
Autor:
Seong Eun Park, Ji-Won Park, Gyusoup Lee, Byung Jin Cho, Yongjun Kim, Hyeongdo Choi, Choong Sun Kim
Publikováno v:
ACS Applied Energy Materials. 3:4155-4161
The dye-sensitized solar cell–thermoelectric hybrid generator (DS-TEG), which is a hybridization of a dye-sensitized solar cell (DSSC) and a thermoelectric generator (TEG) not at the structural lev...
Publikováno v:
Energy. 179:12-18
Thermoelectric generators (TEGs) represent a promising technology for self-powered wearable systems. Since the conventional TEGs have limitation to be used on the human body due to its structural rigidity, flexible TEGs have been studied and develope
Autor:
Choong Sun Kim, Seong Ho Kim, Ji-Won Park, Byung Jin Cho, Gyusoup Lee, Hyeongdo Choi, Seong Eun Park, Yongjun Kim
Publikováno v:
ACS Applied Energy Materials. 2:2381-2386
A high-performance monolithic photovoltaic–thermoelectric hybrid generator with a photothermal conversion layer is introduced. The layer, a thin acrylic film dyed with black colored AZO dye, effectively absorbs photons in the near-infrared region.
Autor:
Kevin K. Yi, Byung Jin Cho, Hyeongdo Choi, Hyun Mo Gu, Sang-Gug Lee, Yongjun Kim, Gyusoup Lee, Choong Sun Kim, Seong Ho Kim
Publikováno v:
Energy. 162:526-533
As industrial environments expand and become more automated, wireless sensor networks are attracting attention as an essential technology for efficient operation and safety. A wireless sensor node (WSN), self-powered by an energy harvester, can signi