Profile

JEONG, Ahrong

ahrong.jeong(at)es.hokudai.ac.jp

Room: Research Institute for Electronic Science 3F 03-106
TEL: +81-11-706-9433 / FAX: +81-11-706-9432
keywords: Functional oxide materials, Thermoelectrics, TEM, Film materials, Solid-state electrochemical thermal transistors
orcid0000-0002-8040-7331

The date of birth 9 July, 1988
Blood type O
Home town Seoul, Republic of Korea
Hobby Photography, Swimming, Snowboarding

Biography

Academic Background

2023  Ph.D, Kyushu University

2014  M.S., Kyungnam University

2011  B.S., Kyungnam University

Professional Carrier

2023 – Current  Postdoctoral researcher at Research Institute for Electronic Science (RIES), Hokkaido University

Research Interests

Functional oxide materials, Thermoelectrics, TEM, Film materials

Original Papers (13)

[13] A. Jeong and B.K. Jang, “Effects of Two-step Spark Plasma Sintering on the Microstructures and Thermoelectric Properties of Pure/In-doped ZnO”, Mater. Sci. Tech. Jpn., 59 (2022) 197–203.

[12] A. Jeong, M. Ohtaki, and B.K. Jang, “Characterization of ZnO thermoelectric ceramics and their microstructures consolidated by two-step spark plasma sintering”, J. Ceram. Soc. Jpn., 130 (2022) 889– 894.

[11] A. Jeong, M. Ohtaki, and B.K. Jang, “Thermoelectric performance of In and Ga single/dual-doped ZnO ceramics fabricated by spark plasma sintering”, Ceram. Int., 48 (2022) 14414–14423.

[10] A. Jeong, K. Suekuni, M. Ohtaki, and B.K. Jang, “Thermoelectric properties of In- and Ga-doped spark plasma sintered ZnO ceramics”, Ceram. Int., 47 (2021) 23927–23934.

[9] B.N. Kim, K. Hiraga, A. Jeong, C. Hu, T. Suzuki, J. Yun, and Y. Sakka, “Transparent ZnAl2O4 Ceramics Fabricated by Spark Plasma Sintering”, J. Ceram. Soc. Jpn., 122 (2014) 784–787.

[8] C. Hwang, A. Jeong, H. Lee, S. Cho, and J. Yun, “Preparation of Yttrium Oxide Coating Films by Spray Coating Method”, J. Adv. Mater., 25 (2013) 23–30.

[7] J. Kim, C. Hwang, A. Jeong, H. Lee, and J. Yun, “Oxidation Protection Shields for the Silicon Carbide Coating”, J. Adv. Mater., 24 (2012) 41–46.

[6] J. Kim, J. Lee, C. Hwang, A. Jeong, H. Lee, S. Cho, and J. Yun, “Analysis of Thermal Stress in Ceramic Coating Films”, J. Adv. Mater., 24 (2012) 35–39.

[5] A. Jeong, J. Kim, and J. Yun, “Preparation of Self-Cleaning Coating Films with Nano-and Microstructure”, Kor. J. Mater. Res., 22 (2012) 416–420.

[4] H. Kim, J. Kim, A. Jeong, H. Lee, and J. Yun, “Preparation of Silicon Carbide Coating Film”, J. Adv. Mater., 23 (2011) 21–26.

[3] J. Kim, B. Park, J. Lee, A. Jeong, S. Cho, and J. Yun, “Finite Elements Method of Mutilayer Coating for Ultrahigh Temperature Oxidation Resistive Application”, J. Adv. Mater., 23 (2011) 15–19.

[2] J. Kim, A. Jeong, H. Kim, H. Jeong, J. Yun, and H. Lee, “Realization of Nano-Micro World of the Lotus Leaf”, Institute of Gifted Education in Science, 12 (2011) 177–190.

[1] H. Lee, C. Hwang, J. Kim, A. Jeong, H. Jeong, H. Sin, D. Kim, W. Kim, S. Park, and J. Yun, “Nano-Microstructure of Lotus Leaf and Lotus Effect”, J. Adv. Mater., 22 (2010) 47–52.

Review Paper (1)

[1] ジョン アロン, 大瀧 倫卓, 張 炳國, “酸化物系熱電材料の研究開発動向”, 材料の科学と工学, 58 (2021) 18–21.

Invited Talk (1)

[1] A. Roy and A. Jeong, “Microscopy at the Ultimate Limit: ‘see’-ing the Atoms in Materials”, JSPS Science Dialogue Program, at Meizen High School, Kurume, Fukuoka, Japan

International Conferences (22)

[22] Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, Bin Feng, Yuichi Ikuhara, Yusaku Magari, Hiromichi Ohta, “Solid-State Electrochemical Thermal Transistors with Large Thermal Conductivity Switching Width”, 2024 MRS Spring Meeting, Seattle, WN, April 22-26, 2024. (Onsite Oral)

[21] Ahrong Jeong, Zhiping Bian, Hiromichi Ohta, Byung-Koog Jang, “[B1-O301-05] Thermal Conductivity Suppression of Ga and In Co-Substituted Zinc Oxide Epitaxial Films”, MRM2023, Kyoto, Japan, December 11-16, 2023. (oral)

[20] Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta, “Alkaline Earth-ion Substituted Strontium Cobaltite Films as Solid-State Electrochemical Thermal Transistors”, The 24th RIES-HOKUDAI International Symposium 開 [kai], Hokkaido University, Sapporo, Japan, December 6-7, 2023.

[19] Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta, “Alkaline earth-ion substituted strontium cobaltite films as solid-state electrochemical thermal transistors”, The Mini-Workshop on Functional Materials Science (Organizers’ meeting), Sapporo, Japan, December 1-2, 2023. (Poster)

[18] Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta, “Thermal Conductivity Modulation in Sr1−xBaxCoOy Epitaxial Films”, 29th International Workshop on Oxide Electronics (iWOE29), Busan, Korea, October 15-18, 2023. (poster)

[17] A. Jeong, M. Ohtaki, and B.K. Jang, “Effect of Doping with Indium and Gallium on Thermoelectric Properties in Zinc Oxide”, at the 46th International Conference and Exposition on Advanced Ceramics Composites (ICACC 2022), January 23-28, 2022, Online (oral).

[16] A. Jeong and B.K. Jang, “Thermoelectric Performance of ZnO Ceramics co-doped with Ga and In fabricated by Spark Plasma Sintering”, at the 23rd Cross Straits Symposium on Energy and Environmental Science and Technology (CSS-EEST23), December 2-3, 2021, Online (oral).

[15] A. Jeong and B.K. Jang, “Thermoelectric Properties and Microstructure of In- and Ga-doped ZnO fabricated by Spark Plasma sintering”, at the 7th International Exchange and Innovation Conference on Engineering & Sciences (IEICES 2021), October 21-22, 2021 Online (oral).

[14] A. Jeong, J. Yun, and B. Jang, “Preparation of Superhydrophobic Coating Films with i-pp/CNT and SiO2/CNT”, at the 45th International Conference and Expo on Advanced Ceramics and Composites (ICACC2021), February 8-11, 2021 Online (oral).

[13] A. Jeong, Y. Sato, R. Teranishi, and K. Kaneko, “Hydrothermal Synthesis and Morphological Characterization of MnO2 Nanostructures by Electron Microscopy”, at the International Symposium on Microscopy & Microanalysis of Materials (ISMMM) 2018, October 16-10, 2018, Research Center for Steel, Kyushu University, Fukuoka, Japan (Poster Award).

[12] A. Jeong, J. Yun, A. Roy, Y. Sato, R. Teranishi, and K. Kaneko, “Characterization of Nanostructured Materials in Biomimetics and Energy Storage Systems”, at the Young Scientists Satellite Meeting ‘Bridging over microscopic world’ in the 3rd East-Asia Microscopy Conference, November 10-11, 2017, Commodore Hotel, Busan, Korea (poster).

[11] A. Jeong, A. Roy, Y. Sato, R. Teranishi, and K. Kaneko, “Hydrothermal Synthesis and Characterization of β-MnO2 Single Crystal Nanorods”, at the 3rd East-Asia Microscopy Conference (EAMC3), November 7-10, 2017, BEXCO, Busan, Korea (Best Poster Award).

[10] A. Jeong, S. Han, H. Lee, and J. Yun, “Superhydrophobicity from Nano/Microstructure with Carbon Nanotubes on Silica Spheres”, at the 12th International Nanotech Symposium & Exhibition NANO KOREA, July 2-4, 2014, COEX, Seoul, Korea (Best Poster Award).

[9] A. Jeong, B.N. Kim, and J. Yun, “Fabrication of Transparent ZnAl2O4 by Spark Plasma Sintering”, at the 2nd International Workshop on Nano and Microstructure Design (IWNMD2013) in conjunction with “Capstone Design Project Seminar”, November 28-30, 2013, Yeungnam University, Daegu, Korea (oral).

[8] A. Jeong, B.N. Kim, and J. Yun, “Fabrication of Dense and Transparent ZnAl2O4 by Spark Plasma Sintering”, at the International Conference of the World Green Energy & Resources Congress, October 28-29, 2013, Kyungnam University, Changwon, Korea (poster).

[7] A. Jeong, S. Kim, J. Kim, C. Hwang, H. Lee, and J. Yun, “Preparation of Superhydrophobic Coating Films with Dual-Scale Structures”, at the 11th International Nanotech Symposium & Exhibition NANO KOREA, July 10-12, 2013, COEX, Seoul, Korea (oral).

[6] A. Jeong, J. Kim, and J. Yun, “Preparation of Superhydrophobic Coating Films with Silica Spheres”, at the International Conference of the World Green Energy Congress, November 6-7, 2012, Kyungnam University, Changwon, Korea (poster).

[5] A. Jeong, J. Kim, H. Lee, Y. Ahn, and J. Yun, “Preparation of Superhydrophobic Surface with Nanostructure”, at the 10th International Nanotech Symposium & Exhibition NANO KOREA, August 16-18, 2012, COEX, Seoul, Korea (poster).

[4] A. Jeong, H. Ryu, N. Browning, and J. Yun, “Characterization of Nanostructure of Zinc Oxide Nanorods”, at the Nanotech Conference & Expo 2012, June 18-21, 2012, Santa Clara, CA, USA (poster).

[3] A. Jeong, J. Kim, H. Lee, Y. Ahn and J. Yun, “Preparation of Superhydrophobic Coating Films with a Self-Cleaning Function”, at the Nanotech Conference & Exposition, June 18-21, 2012, Santa Clara, USA (poster).

[2] A. Jeong, J. Kim, J. Yi, S. Kim, H. Kim, H. Lee, Y. Ahn, and J. Yun, “Preparation of Hydrophobic Coating Films with a Self-Cleaning Function”, at the 9th International Nanotech Symposium & Exhibition NANO KOREA, August 24-26, 2011, KINTEX, Goyang, Korea (poster).

[1] A. Jeong, R. Kim, and M. Seo, “The New LED Soldering Method for Improving Heat Dissipation”, at the 16th International Conference of the Advanced Techniques and Applications (ATA 2010), November 1-3, 2010, Kyungnam University, Changwon, Korea (poster).

Domestic Conferences (19)

[19] ジョンアロン, 卞 志平, 吉村充生, フウビン, 幾原雄一, 曲 勇作, 太田裕道, “大きな熱伝導率変化幅を示すCeO2全固体電気化学熱トランジスタ”, 2024年 第71回 応用物理学会春季学術講演会, 東京都市大学 世田谷キャンパス,東京, 2024年3月22日-25日.

[18] Ahrong Jeong, Zhiping Bian, Mitsuki Yoshimura, and Hiromichi Ohta, “Solid-State Electrochemical Thermal Transistors with Alkaline Earth-ion substituted Strontium Cobaltite Films”, 第49回固体イオニクス討論会, 北海道大学フロンティア応用科学研究棟, 2023年11月15日

[17] ジョン・アロン, 張炳國, “2段階放電プラズマ焼結による無ドープ, InドープZnO系酸化物の熱電性能と微細構造”, 日本材料科学会2023年度学術講演大会, ハイブリッド, 2023.5.18-19 (oral)

[16] A. Jeong, M. Ohtaki, and B.K. Jang, “Thermoelectric properties and microstructure of pure/In-doped ZnO consolidated by two-step spark plasma sintering”, at the Annual Meeting of The Ceramic Society of Japan (CerSJ), March 8-10, 2023, Kanagawa University Minatomirai Campus, Hybrid (oral).

[15] A. Jeong, M. Ohtaki, and B.K. Jang, “Thermoelectric Characterization of In and Ga single/dual-doped ZnO consolidated by Spark Plasma Sintering”, at the 19th Thermoelectrics Society of Japan (TSJ2022), City Hall Plaza Aore Nagaoka, Nagaoka, Japan, August 8-10, 2022 (oral).

[14] A. Jeong, M. Ohtaki, and B.K. Jang, “Synthesis and Thermoelectric Characterization of In and Ga co-doped ZnO by Spark Plasma Sintering”, at the Materials Science Society of Japan (MSSJ), May 18-29, 2022, Online (oral).

[13] A. Jeong, M. Ohtaki, and B.K. Jang, “Microstructure and Thermoelectric Properties of In- and Ga-doped ZnO consolidated by Spark Plasma Sintering”, at the Annual Meeting of The Ceramic Society of Japan (CerSJ), March 10-12, 2022, Online (oral).

[12] A. Jeong, K. Suekuni, M. Ohtaki, and B.K. Jang, “Effect of Doping Concentration on the Thermoelectric Properties of In and Ga doped ZnO by Spark Plasma Sintering”, at the Materials Science Society of Japan (MSSJ), May 20-21, 2021, Online (oral).

[11] A. Jeong, K. Suekuni, M. Ohtaki, and B.K. Jang, “Thermoelectric performance of In and Ga co-doped ZnO fabricated by spark plasma sintering”, at the Annual Meeting of The Ceramic Society of Japan (CerSJ), March 23-25, 2021, Online (oral).

[10] A. Jeong, Y. Sato, R. Teranishi, and K. Kaneko, “Fabrication and Characterization of MnO2 by Hydrothermal Synthesis”, at the first Kyushu University-Shoei Chemicals joint seminar, August 27, 2019, JR Hakata City, Fukuoka, Japan (oral).

[9] A. Jeong, Y. Sato, R. Teranishi, and K. Kaneko, “Fabrication and Morphological Characterization of MnO2 Nanostructures by Hydrothermal Synthesis”, at the 60th Kyushu Branch General Meeting of The Japanese Society of Microscopy, December 8, 2018, Kumamoto University in Kumamoto, Japan (poster).

[8] A. Jeong, K. Yamada, A. Roy, and K. Kaneko, “Minimization of Contamination on Pr6O11 for STEM Characterization by Calcination”, at the 72nd Annual Meeting of the Japanese Society of Microscopy (JSM), June 14-16, 2016, Sendai International Center, Sendai, Japan (poster).

[7] A. Jeong, S. Han, H. Lee, and J. Yun, “Preparation of Superhydrophobic Coating Films with Micro/Nano-Scale structures”, at the Spring Meeting of The Korea Ceramic Society, April 16-18, 2014, KINTEX, Goyang, Korea (Oral presentation Award).

[6] A. Jeong, B.N. Kim, and J. Yun, “Fabrication of Dense ZnAl2O4 by Spark Plasma Sintering”, at the Fall Meeting of The Korea Ceramic Society & The 5th AOCF Conference, October 16-18, 2013, International Convention Center, Jeju, Korea (oral and poster).

[5] A. Jeong, H. Lee, and J. Yun, “Fabrication of Coating Films with Silica balls”, at the Spring Meeting of The Korea Clay Society, May 23-24, 2013, Kyungnam University, Changwon, Korea (poster).

[4] A. Jeong, C. Hwang, S. Kim, H. Lee, and J. Yun, “Preparation of Coating Films with Silica Nanoballs”, at the Spring Meeting of The Korea Ceramic Society, April 18-19, 2013, Changwon Convention Center, Changwon, Korea (poster).

[3] A. Jeong, J. Kim, and J. Yun, “Preparation of Superhydrophobic Coating Films”, at the Fall Meeting of The Korea Ceramic Society, October 18-19, 2012, Daejeon Convention Center, Daejeon, Korea (poster).

[2] A. Jeong, J. Kim, H. Lee, Y. Ahn, and J. Yun, “Preparation of Coating Films with a Self-Cleaning Function”, at the Spring Meeting of The Korea Ceramic Society, April 19-20, 2012, EXCO, Daegu, Korea (poster).

[1] A. Jeong, H. Kim, J. Kim, C. Hwang, S. Ha, J. Yi, H. Jeong, S. Kim, H. Lee, Y. Ahn, and J. Yun “Preparation of Coating Films with Self-Cleaning Function”, at the Spring Meeting of the Korea Ceramic Society, April 21-22, 2011, Kyonggi University, Suwon, Korea (poster).

Patent (1)

[1] 太田裕道, 曲勇作, ジョンアロン, 卞 志平, 吉村充生, “熱トランジスタ”, 特願2024-018066, 2024年2月8日出願

Awards & Honors (5)

[1] 日本材料科学会2023年度 若手奨励賞(口頭発表部門)ジョン・アロン(北大電子科研)「2段階放電プラズマ焼結による無ドープ, InドープZnO系酸化物の熱電性能と微細構造」

[2] (2018) Poster Award in the Poster Competition, hosted by the International Symposium on Microscopy & Microanalysis of Materials (ISMMM) 2018

[3] (2017) Best Poster Award in the Poster Competition, hosted by the 3rd East-Asia Microscopy Conference

[4] (2014) Best Poster Award in the Poster Competition, hosted by the 12th International Nanotech Symposium & Nano-Convergence Expo, NANO KOREA

[5] (2014) Oral Presentation Award in the Oral Presentation Competition of Student Research Theme hosted by the Korean Ceramic Society

Research Grants (2)

[1] (2022) The Cooperative Research Program of Network Joint Research Center for Materials and Devices, Japan

[2] (2017) The encouragement of research from the Japanese Society of Microscopy (JSM), Japan