Research
Recent Research Products
Recent Publications (out of 183 total)
- Briana Bryant, Hoyun Won, Yang-Ki Hong, Woncheol Lee, and Minyeong Choi, “Design of triple-band (DSRC, 5G, 6G) antenna for autonomous vehicle telematics,” Electronics Vol. 11, 2523 (2022). DOI: 10.3390/electronics11162523.
- Md Khurshedul Islam, Kazi Nishat Tasnim, Seungdeog Choi, Sangshin Kwak, and Yang-Ki Hong, “Performance evaluation and comparison of three-phase and six-phase winding in ultra-high-speed machine for high-power application,” IEEE Transactions on Industry Electronics, Early Access, July 7, 2022. DOI: 10.1109/TIE.2022.3187587.
- Sumin Kim, Minyeong Choi, Hoyun Won, Hyun-Sook Lee, Wonchel Lee, Seong-Gon Kim, Wooyound Lee, and Yang-Ki Hong, “Composition and property optimization of rare-earth-free Mn-Al-C magnet by phase stability and magnetic behavior analysis,” Journal of Alloys and Compounds Vol. 919, 165773 (2022). DOI: 10.1016/j.jallcom.2022.165773.
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Hector Garcia, Dongmyung Shin, Young-Sik Yoon, Kwangjoo Lee, Hao Xin, and Chang-Dong Yeo, “Microwave absorption performance of M-type hexagonal ferrite and MXene composite in Ka and V bands (5G mmWave frequency Bands),” Journal of Magnetism and Magnetic Materials Vol. 560, 169523 (2022). DOI: 10.1016/j.jmmm.2022.169523.
- Byoung Choi, Mukesh Aryal, Minyeong Choi, and Yang-Ki Hong, “Spin-orbit torque driven nano-oscillators based on synthetic Néel-like skyrmion in magnetic tunnel junction (Editor’s pick),” AIP Advances, Vol. 12, 055013 (2022). DOI: 10.1063/5.0088199. (This led to a joint NSF grant proposal with Canadian University).
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Jonathan Platt, Briana Bryant, Seungdeog Choi, Shuhui Li, Hwan-Sik Yoon, Timothy A. Haskew, Jongkook Lee, Taegyu Lee, and Tae-Won Lim, “Novel design of six-phase spoke-type ferrite permanent magnet motor for electric truck application,” Energies Vol. 15, 1997 (2022). DOI:10.3390/en15061997.
- Md Khurshedul Islam, Seungdeog Choi, Yang-Ki Hong, and Sangshin Kwak, “Design of high-power ultra-high-speed rotor for portable mechanical antenna drives,” IEEE Transactions on Industrial Electronics, Early access, December 21, (2021). DOI: 10.1109/TIE.2021.3135638.
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Gary J. Mankey, Jongkook Lee, Taegyu Lee, and Tae Won Lim, “Effects of ferromagnetic branch structures on coercivity of Alnico permanent magnets,” AIP Advances Vol. 12, 035113 (2022). DOI: 10.1063/9.0000298.
- Sujoy Talukder, Chang-Dong Yeo, Yang-Ki Hong, Minyeong Choi, Robert C. Flicek, and Joseph E. Bishop, “Analytical modeling and simulation of electrical contact resistance for elastic rough electrode surface contact including frictional temperature rise,” AIP Advances Vol. 12, 025204 (2022). DOI: 10.1063/5.0073093.
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Feng Yan, Gary J. Mankey, Xiao Han, Woncheol Lee, Chang-Dong Yeo, Jongkook Lee, and Taegyu Lee, “Micromagnetic simulation of coercivity of Alnico magnets,” IEEE Magnetics Letters Vol. 12, 7501505 (2021). DOI: 10.1109/LMAG.2021.3084899.
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, Gary J. Mankey, Chang-Dong Yeo, Nayem M. R. Shah, Woncheol Lee, Myung-Hwa Jung, and Jan-Ulrich Thiele, “Upper limit of carbon concentration in ferromagnetic L10-ordered FePt-C for Tb/in2 data storage density heat-assisted magnetic recording (HAMR) Media,” IEEE Transactions on Magnetics Vol. 57, 3201006 (2021). DOI: 10.1109/TMAG.2021.3079188.
- Hoyun Lee, Yang-Ki Hong, Linfeng Li, Abhishek Awasthi, Natalie Nickerson, Briana Bryant, Minyeong Choi, Stephen Yan, Drew Taylor, Charles O'Neill, and Joohan Lee, “VHF/UHF open-sleeve dipole antenna array for airborne ice sounding and imaging radar,” IEEE Antennas and Wireless Propagation Letters Vol. 20, No.6, 883-887 (2021). DOI: 10.1109/LAWP.2021.3066288.
- Iftikahar Rasheed, Fei Hu, Yang-Ki Hong, and Bharat Balasubramanian, “Intelligent vehicle network routing with adaptive 3D beam alignment for mmWave 5G-based V2X Communications,” IEEE Transactions on Intelligent Transportation Systems Vol. 22, 2706 - 2718 (2021). DOI: 10.1109/TITS.2020.2973859.
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, Gary J. Mankey, Chang-Dong Yeo, Woncheol Lee, Myung-Hwa Jung, Taegyu Lee, and Jong-Kook Lee, “Suppressing Antiferromagnetic Coupling in Rare-Earth Free Ferromagnetic MnBi-Cu Permanent Magnet,” Journal of Applied Physics Vol. 129, 113902 (2021). DOI: 10.1063/5.0040464. (This led to an NSF grant proposal).
- Xiao Han, Hoyun Won, Minyeong Choi, Liping Guo, Zhongqi Liu, Ruigang Wang, Lin Li, Yang-Ki Hong, and Feng Yan, “Interdiffusion induced high coercivity of rare-earth free Alnico/Pt thin films,” Journal of Alloys and Compounds Vol. 854, 157038 (2021). DOI: 10.1016/j.jallcom.2020.157038.
Recent U.S. Patents (out of 25 total)
- US 11,171,526, Yang-Ki Hong, Hoyun Won, Woncheol Lee, “Energy Efficient Permanent Magnet Synchronous Motor,” November 9, 2021.
- US 11,139,575, Yang-Ki Hong, Woncheol Lee, “Patch Antenna with Ferrite Cores,” October 5, 2021.
- US 11,024,971, Yang-Ki Hong, Woncheol Lee, Hoyun Won, “Wideband Millimeter (mmWAVE-5G) Antenna,” June 1, 2021.
- US 10,944,303, Yang-Ki Hong, Hoyun Won, Woncheol Lee, “Low Torque Ripple Spoke-type Permanent Magnet Motor,” March 9, 2021.
Recent Peer-Reviewed Conference Abstracts (out of 260 total)
- Yang-Ki Hong, Minyeong Choi, Hoyun Won, Jihoon Park, Woncheol Lee, Jaejin Lee, Hyunsol Son, and Haein Choi-Yim, “Applying Computational Materials Science to Nano-Crystalline and Amorphous Soft Magnetic Materials Design (Invited),” presented at the 7th International Conference on Electronic Materials and Nanotechnology for Green Environment, Jeju, South Korea, November 6-9, 2022.
- Yang-Ki Hong et al., “Mossbauer Spectroscopic Characterization of the Intrinsic Properties of Magnetic Materials,” presented at the 7th International Conference on Electronic Materials and Nanotechnology for Green Environment, Jeju, South Korea, November 6-9, 2022.
- Taylor W. Woods, Kimberly Genareau, Chanyeop Park, Joshua Feinberg, Hoyun Won and Yang-Ki Hong, “Destruction and creation of minerals in lightning-affected atmospheric dusts,” submitted to 11th Conference on the Meteorological application of lightening data at American Meteorological Society (AMS), Denver, CO., January 8-12, 2023.
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Hector Garcia, Hao Xin, Hyunhye Jung, and Kwangjoo Lee, “Microwave absorption performance of CoTi-doped M-type hexagonal ferrite in the millimeter-wave Spectrum,” to be presented at The 67TH Annual Conference on Magnetism and Magnetic Materials (MMM2022), Minneapolis, Minnesota, October 31 - November 4, 2022.
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, Huynhye Jung, and Kwangjoo Lee, “EMI materials design for high shielding effectiveness using AI (Machine learning),” presented at The 67TH Annual Conference on Magnetism and Magnetic Materials (MMM2022), Minneapolis, Minnesota, October 31 - November 4, 2022.
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, Chang-Dong Yeo, Nayem Md. Reza Shah, Jongkook Lee, Taegyu Lee, and Tae Won Lim, “Tuning magnetocrystalline anisotropy of LTP-MnBi,” presented at The 67THAnnual Conference on Magnetism and Magnetic Materials (MMM2022), Minneapolis, Minnesota, October 31 - November 4, 2022.
- Briana Bryant, Yang-Ki Hong, and Hoyun Won, “Triple-Band (Dedicated Short-Range Communication, 5G, 6G) Antenna for Vehicle Telematics,” Paper ID: 313-TV234, presented at the 2022 IEEE Radio & Wireless (RWW) Week, 16 - 19 January 2022, Las Vegas, Nevada, USA
- Jonathan Platt, Yang-Ki Hong, Hoyun Won, Olakunle Olaniyan, Minyeong Choi, and Joohan Lee, "Simulation of FMCW and M-Sequence Ground Penetrating Radar Systems,” The Paper ID: 313-TU445, presented at the 2022 IEEE Radio & Wireless (RWW) Week, 16 - 19 January 2022, Las Vegas, Nevada, USA
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Shuhui Li, Hwan-sik Yoon, Timothy A. Haskew, JongKook Lee, Taegyu Lee, and TaeWon Lim, “Performance Evaluation of Hybrid Spoke-type Ferrite-NdFeB Permanent Magnet Motor,” Paper No. 3628373, presented at the 2022 Joint Magnetism and Magnetic Materials (MMM)/IEEE International Magnetics (InterMAG) Conference, New Orleans, LA, January 10-14, 2022.
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Gary Mankey, JongKook Lee, Taegyu Lee, and TaeWon Lim, “Effects of α1-phase Branch Shapes on Coercivity of Rare-earth Free Alnico Permanent Magnet,” Paper No. 3628366, presented at the 2022 Joint Magnetism and Magnetic Materials (MMM)/IEEE International Magnetics (InterMAG) Conference, New Orleans, LA, January 10-14, 2022.
- Hoyun Won, Yang-Ki Hong, Minyeong Choi, Kwanjoo Lee, Dongmyung Shin, and Young-sik Yoon, “Microwave Absorption Performance of M-type Hexagonal Ferrite and MXene Composite,” Paper No. 3630252, presented at the 2022 Joint Magnetism and Magnetic Materials (MMM)/IEEE International Magnetics (InterMAG) Conference, New Orleans, LA, January 10-14, 2022.
- Briana Bryant, Yang-Ki Hong, Hoyun Won, and Minyeong Choi, “Miniaturizing Patch Antenna with Multi-layer Soft Ferrite and Dielectric Substrate Structure,” Paper No. 3628708, presented at the 2022 Joint Magnetism and Magnetic Materials (MMM)/IEEE International Magnetics (InterMAG) Conference, New Orleans, LA, January 10-14, 2022.
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, JongKook Lee, Taegyu Lee, TaeWon Lim, Feng Yan, and Xiao Han, “Tuning Magnetocrystalline Anisotropy of LTP MnBi with Sn,” Paper No. 3632161, presented at the 2022 Joint Magnetism and Magnetic Materials (MMM)/IEEE International Magnetics (InterMAG) Conference, New Orleans, LA, January 10-14, 2022.
- Yang-Ki Hong, Minyeong Choi, and Hoyun Won, “Revisiting Mossbauer-characterization of magnetic materials,” Paper No. 524, presented at International Conference on Advanced in Functional Materials, August 18-20, 2021, University of California, Los Angeles, CA.
- Yang-Ki Hong, Minyeong Choi, and Hoyun Won, “Applying Computational Materials Science to Crystalline and Nano-Crystalline Magnetic Materials Design (invited),” Paper No. 559, presented at International Conference on Advanced in Functional Materials, August 18-20, 2021, University of California, Los Angeles, CA.
- Hoyun Won, Yang-Ki Hong, Jonathan Platt, Minyeong Choi, Briana Bryant, and Seungdeog Choi, Paper No. 8014, “Cost-Effective Hybrid Permanent Magnet Assisted Synchronous Reluctance Machine for Electric Vehicle,” presented at The 2021 International Electric Machines & Drives Conference, May 17-20, 2021.
- Hoyun Won, Yang-Ki Hong, Jonathan Platt, Minyeong Choi, Briana Bryant, and Seungdeog Choi, “Six-phase Fractional-Slot Concentrated Winding Ferrite Spoke-type Permanent Magnet Synchronous Motor for Electric Truck,” presented at The 2021 International Electric Machines & Drives Conference, May 17-20, 2021.
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, Taegyu Lee, and Jong-Kook Lee, Paper No. JD-04, “Tuning magnetic anisotropy of MnBi Permanent Magnet with Sn,” presented at the 2021 IEEE International Magnetics Conference (INTERMAG), April 26-30, 2021. (A full manuscript is under preparattion for publication in J. of Appliws Physics.)
- Minyeong Choi, Yang-Ki Hong, Hoyun Won, Chang-Dong Yeo, Sumin Kim, Hyun-Sook Lee, and Wooyoung Lee, Paper No. JD-07, “Tuning Spin and Magnetocrystalline Anisotropy of L1-ordered MnAl with Transition Metal Elements(TM = Mn, Fe, Co, Ni),” presented at the 2021 IEEE International Magnetics Conference (INTERMAG), April 26-30, 2021.
- Bipin Lamichhane, Dinesh Thapa, Chandani Nandadasa, Minyeong Choi, Yang-Ki Hong, and Seong-Gon Kim, Paper No. S40.00013, “Site preference and magnetic properties of Mn substituted M-type strontium hexaferrite,” presented at 2021 American Physical Society Meeting, March 15-19, 2021.
Awards and Honors
- Hong’s magnetics team won second place at the IEEE Antennas and Propagation Society 2018 Student Design Contest, July 8-13, 2018, Boston, MA. https://2018apsursi.org/StudentDesignContest.asp.
- Hong’s magnetics team won first place at the IEEE Antennas and Propagation Society 2017 Student Design Contest, July 9-14, 2017, San Diego, CA. https://www.ieeeaps.org/awards/ap-s-student-awards/ap-s-student-design-contest-winners.
- Received the Graduate Education Award, College of Engineering, The University of Alabama, April 16, 2020.
- Received the Distinguished Service Award, The Korean Magnetics Society, December 7, 2010.
- Received the Faculty Excellence Award, Naval ROTC Battalion at The University of Idaho/Washington State University, April 24, 2006
- Received the Annual Alumni Association Award for Faculty Excellence, The University of Idaho, December 6, 2001
- Received Outstanding Research Award, Department of Materials Science and Engineering, The University of Idaho, 2000
- Received the Annual Alumni Association Award for Faculty Excellence, The University of Idaho, December 4, 1997
Featured News Articles
- UA’s Electric Vehicle Focus Part of National Transportation Collaboration: https://news.ua.edu/2017/04/uas-electric-vehicle-focus-part-of-national-transportation-collaboration/
- UA Engineering Students Place in International Design Contest for Second Consecutive Year: https://news.eng.ua.edu/2018/10/ua-engineering-students-place-international-design-contest-second-consecutive-year/
- UA Engineering Student Awarded Research Grant: https://news.eng.ua.edu/2018/07/ua-engineering-student-awarded-research-grant/
- UA Team Enters Antenna Design Contest: https://www.tuscaloosanews.com/story/news/education/campus/2018/07/09/university-of-alabama-students-selected-for-antenna-design-contest/11563743007/
- UA Students Win International Antenna Contest: https://news.ua.edu/2017/08/ua-student-team-wins-international-antenna-contest
- Three Teams with UA Ties Set for Business Start-up Competition https://news.ua.edu/2014/01/three-teams-with-ua-ties-set-for-business-start-up-competition/
- UA researchers play critical role in innovation for electric vehicles http://ovpred.ua.edu/news/ua-researchers-play-critical-role-in-innovation-for-electric-vehicles/
- Jaejin Lee receives Outstanding Research by a Doctoral Student https://graduate.ua.edu/2014/03/20/jaejin-lee-department-of-electrical-and-computer-engineering/