Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Jong-Wook Roh"'
Autor:
Dae-Hwan Kwon, Eui-Hyun Jin, Dae-Hwang Yoo, Jong-Wook Roh, Dongjun Suh, Walter Commerell, Jeung-Soo Huh
Publikováno v:
Sensors, Vol 22, Iss 11, p 4125 (2022)
The sensing characteristics of toluene gas are monitored by fabricating ZnO nanorod structures. ZnO nanostructured sensor materials are produced on a Zn film via an ultrasonic process in a 0.01 M aqueous solution of C6H12N4 and Zn(NO3)2∙6H2O. The r
Externí odkaz:
https://doaj.org/article/ae1c67fa461141efb3860b5510cf6c2a
Autor:
Doh Won Jung, Chan Kwak, Hee Jung Park, Weon Ho Shin, Hyun Sik Kim, Jong Wook Roh, Sungwoo Hwang, Jongmin Lee, Kimoon Lee, Changhoon Jung, Dong-Su Ko, Se Yun Kim
Publikováno v:
Alexandria Engineering Journal, Vol 107, Iss , Pp 878-885 (2024)
This study focused on enhancing the electrical conductivity of metal oxide nanosheet films by increasing the size of the nanosheets to promote the electron flow in the desired in-plane direction. We developed a method for increasing the size of RuO2
Externí odkaz:
https://doaj.org/article/4055d9940aa24bca9c304728b5e28b16
Autor:
Jiyeon Shin, Jeong Yun Hwang, Changyu Kim, Jimyeong Park, Jong Wook Roh, Sun-Woo Choi, Changhyun Jin, Myung Sik Choi
Publikováno v:
Sensors and Actuators Reports, Vol 8, Iss , Pp 100246- (2024)
In this study, non-oriented Au-decorated SnO2 nanospheres (NSs) were synthesized using hydrothermal and microwave methods. The SnO2 spheres ranged from hundreds of nanometers to a microscale. The oxygen vacancy on the surface increased after Au adsor
Externí odkaz:
https://doaj.org/article/441c6c46794f423a92d822e516304f4a
Autor:
Min Young Kim, Jeong Yun Hwang, Ali Mirzaei, Sun-Woo Choi, Sang-il Kim, Hyun-Sik Kim, Sun-Jae Kim, Jong Wook Roh, Myung Sik Choi, Kyu Hyoung Lee, Seung Yong Lee, Changhyun Jin
Publikováno v:
Adsorption Science & Technology, Vol 2023 (2023)
Herein, we report a simple and scalable synthesis route to prepare Ag-functionalized porous ZnO sheets and their enhanced NO2 gas sensing properties. Porous ZnO sheets functionalized with well-dispersed submicron Ag particles were prepared by using a
Externí odkaz:
https://doaj.org/article/288735ff644c4007a27cdd7bbc3df9eb
Publikováno v:
Dalton Transactions: An International Journal of Inorganic Chemistry; 9/14/2024, Vol. 53 Issue 34, p14411-14421, 11p
Autor:
Abdulhameed Babatunde Owolabi, Benyoh Emmanuel Kigha Nsafon, Jong Wook Roh, Dongjun Suh, Jeung-Soo Huh
Publikováno v:
Alexandria Engineering Journal, Vol 59, Iss 6, Pp 4643-4657 (2020)
Korean old residential apartments built over many decades were constructed without proper energy efficiency measures. This makes the energy performance of existing buildings to be very poor when compared with the energy performance of new buildings.
Externí odkaz:
https://doaj.org/article/dfd9abe0153948aea5ffd126ea4766de
Autor:
Changhyun Jin, Sangwoo Kim, Dong Eung Kim, Ali Mirzaei, Jong Wook Roh, Sun-Woo Choi, Myung Sik Choi
Publikováno v:
Korean Journal of Metals and Materials. 61:414-421
Dihydrogen sulfide (H2S) gas has a flammable nature and is one of the most toxic and dangerous gases. Even small concentrations can be fatal to humans. Herein, we investigated the H2S gas-sensing features of commercial pristine cerium oxide (CeO2 ) a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::665c0bc49e65b511891165e2e75b54b9
https://doi.org/10.3365/kjmm.2023.61.6.414
https://doi.org/10.3365/kjmm.2023.61.6.414
Autor:
Seung-Hwan Kwon, Sang-il Kim, Minsu Heo, Won-Seon Seo, Jong Wook Roh, Heesun Yang, Hyun-Sik Kim
Publikováno v:
Korean Journal of Metals and Materials. 61:198-205
YbCd2Sb2 is a promising Zintl compound for waste heat recovery applications due to its low thermal conductivity, originating from its complex crystal structure. Many strategies such as alloying or doping have been suggested to further reduce the ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6bf37969c8ab11da0971d34c27a0fd8c
https://doi.org/10.3365/kjmm.2023.61.3.198
https://doi.org/10.3365/kjmm.2023.61.3.198
Autor:
Benyoh Emmanuel Kigha Nsafon, Abdulhameed Babatunde Owolabi, Hemen Mark Butu, Jong Wook Roh, Dongjun Suh, Jeung-Soo Huh
Publikováno v:
Energy Strategy Reviews, Vol 32, Iss , Pp 100570- (2020)
This paper focuses on the techno-economic feasibility and sustainability of a PV/wind/diesel hybrid system designed for decentralized power supply. Several designs have been studied for the hybrid system by varying the PV slope and wind turbine hub h
Externí odkaz:
https://doaj.org/article/b31ac3e4c700495ebc532f443fe99e69
Publikováno v:
Dalton Transactions. 52:3333-3343
Schematic of the NiCu(CO3)(OH)2, NiZn(CO3)(OH)2, and NixCuyZnz(CO3)(OH)2 compounds prepared on a Ni foam substrate.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bd11a7bfb5961a2c84a5fead8850375
https://doi.org/10.1039/d3dt00143a
https://doi.org/10.1039/d3dt00143a