Author Page for Dongwhi Choi

Lotus Leaf-Inspired Droplet-Based Electricity Generator with Low-Adhesive Superhydrophobicity for a Wide Operational Droplet Volume Range and Boosted Electricity Output

Number of pages: 36 Posted: 17 Mar 2022

Donghyeon Yoo, See Jo Kim, Yoonsu Joung, Sunmin Jang, Dongwhi Choi and Dong Sung Kim

affiliation not provided to SSRN, Andong National University, Kyung Hee University, Kyung Hee University, Kyung Hee University and Pohang University of Science and Technology (POSTECH)

Downloads 127 (572,948)

Abstract:

2.

Smart Conveyor Roller System for Self-Powered Product Size Identification in Electrically Off-Grid Condition Via Hybridization of Triboelectric-Electromagnetic Generators

Number of pages: 25 Posted: 16 Apr 2022

Yoonsang Ra, Jaehyoung Kim, Hyeonsu Kim, Sumin Cho, Donghan Lee, Sunmin Jang, Dongik Kam, Moonwoo La, Sung Jea Park and Dongwhi Choi

Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, affiliation not provided to SSRN, Korea University of Technology and Education and Kyung Hee University

Downloads 110 (640,165)

Abstract:

3.

A Comparative Study on the Oxygen Evolution Reaction of Cobalt and Nickel Based Hydroxide Electrodes in Alkaline Electrolyte

Number of pages: 19 Posted: 20 Mar 2022

Animesh Roy, Muhammad Zakria Tariq, Moonwoo La, Dongwhi Choi and Sung Jea Park

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Kyung Hee University and Korea University of Technology and Education

Downloads 84 (777,583)

Abstract:

4.

Injection Molding-Assisted Mass Production of Thermoplastic Fluoropolymer-Based Recyclable Triboelectric Nanogenerator

Number of pages: 27 Posted: 12 Apr 2023

Yoonsang Ra, Jong Hyun Lee, Jiho Bang, Donghan Lee, Dongik Kam, Sumin Cho, Sunmin Jang, Donghyeon Yoo, Jong Woo Kim, Kyoung Je Cha and Dongwhi Choi

Kyung Hee University, affiliation not provided to SSRN, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, affiliation not provided to SSRN, Kyung Hee University, affiliation not provided to SSRN and Kyung Hee University

Downloads 73 (852,604)

Abstract:

5.

All-Aerosol-Sprayed High-Performance Transparent Triboelectric Nanogenerator with Embedded Charge-Storage Layer for Self-Powered Invisible Security Iot System and Raindrop-Solar Hybrid Energy Harvester

Number of pages: 36 Posted: 26 Aug 2022

BaekGyu Kim, Jin Yeong Song, Do Young Kim, Zong-Hong Lin, Dongwhi Choi and Sang Min Park

Pusan National University, Pusan National University, Pusan National University, National Tsing Hua University, Kyung Hee University and Pusan National University

Downloads 70 (875,328)

Citation 1

Abstract:

6.

Electrical Grid-Independent Machine Learning-Assisted Wearable Gait Analysis Device with Triboelectric-Electromagnetic Hybrid Energy Harvester

Number of pages: 33 Posted: 08 May 2025

Yoonsang Ra, Dongjun Kim, Mi Song Nam, Sumin Cho, Yu-seop Kim, Seongwoo Cho, Jumyung Um, Yun Jung Heo and Dongwhi Choi

Kyung Hee University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Kyung Hee University

Downloads 69 (899,324)

Abstract:

7.

2d Tio2/Zn3v2o8 Flake Like Composites for Hybrid Storage Device and Simulation-Based Analysis of Capacitive and Diffusive Contribution

Number of pages: 30 Posted: 16 Jun 2023

Muhammad Ramzan Khawar, Iqra Kanwal, Muhammad Umair, Aqsa Ghazal, Naveed Akhtar Shad, Sajad Hussian, Yasir Javed and Dongwhi Choi

affiliation not provided to SSRN, University of Agriculture Faisalabad, University of Agriculture Faisalabad, Riphah International University, Government College University Faisalabad, University of Education, University of Agriculture Faisalabad and Kyung Hee University

Downloads 63 (933,592)

Citation 1

Abstract:

8.

Microcrack-Assisted Piezoelectric Acoustic Sensor Based on F-Mwcnts/Batio3@Pdms Nanocomposite and its Self-Powered Voice Recognition Applications

Number of pages: 31 Posted: 23 Aug 2023

SASIKUMAR RAGU, Sumin Cho, Arbaz Waqar, Asif Ishfaque, Dongwhi Choi and Byungki Kim

Postdoctoral Research Fellow, Kyung Hee University, affiliation not provided to SSRN, affiliation not provided to SSRN, Kyung Hee University and affiliation not provided to SSRN

Downloads 62 (942,565)

Abstract:

9.

Exceptional Enhancement of Soft Magnetic Properties in Surface-Oxidized Fe/Fe3o4 Soft Magnetic Composites with Co-Nanoparticle Doping Via Hot Pressing

Number of pages: 20 Posted: 28 Mar 2025

Muhammad Arif, Donghun Han, Seunghun Cha, Changsun Pak, Young-Kwang Kim, Sang Woo Kim, Bo Wha Lee, Muhammad Awais, Dongwhi Choi and Jong-Soo Rhyee

Kyung Hee University, Kyung Hee University, R-Materials Co. Ltd., affiliation not provided to SSRN, R-Materials Co. Ltd., Hankuk University of Foreign Studies, affiliation not provided to SSRN, Kyung Hee University, Kyung Hee University and Kyung Hee University - Institute of Natural Sciences

Downloads 59 (980,173)

Abstract:

10.

Direct Electrospinning of Reconstructable Pvdf-Trfe Nanofibrous Mat Onto Conductive Cement Nanocomposite for Triboelectricity-Assisted Net Zero Energy Structure

Number of pages: 27 Posted: 02 Jan 2024

Yoonsang Ra, Jong Woo Kim, Ilhwan You, Sunmin Jang, Sumin Cho, Girak Gwon, Dongik Kam, Donghan Lee, Awais Ahmad, Mohammad Rezaul Karim, Seung-Jung Lee and Dongwhi Choi

Kyung Hee University, affiliation not provided to SSRN, Jeonbuk National University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, King Saud University, Incheon National University and Kyung Hee University

Downloads 51 (1,052,702)

Citation 2

Abstract:

11.

Eco-Friendly Synthesis of Mgo Nanoparticles Using Vitex Tessellata Leaf Extract for the Application of Visible Light Degradation of Methyl Red Dye and Antibacterial Activity

Number of pages: 21 Posted: 03 Aug 2024

Sadia Muzammal, Awais Ahmed, shafaqat ali, Mohamed A. Habila and Dongwhi Choi

Government College University Faisalabad, affiliation not provided to SSRN, Government College University Faisalabad, King Saud University and Kyung Hee University

Downloads 46 (1,109,210)

Abstract:

12.

Charge Transfer Accelerating Strategy for Improving Sensitivity of Droplet Based Triboelectric Sensors Via Heterogeneous Wettability

Number of pages: 30 Posted: 23 Mar 2022

Sunmin Jang, Yoonsu Joung, Hyeonsu Kim, Sumin Cho, Yoonsang Ra, Minchang Kim, Dahoon Ahn, Zong-Hong Lin and Dongwhi Choi

Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Seoul National University of Science and Technology, National Tsing Hua University and Kyung Hee University

Downloads 40 (1,183,237)

Abstract:

13.

Extremely Low Core-Loss and Enhanced Permeability Stability in Hot Press Sintered FeSi Soft Magnetic Composites by TiO2 and Fe Nanopowders

Number of pages: 21 Posted: 12 Feb 2025

Muhammad Arif, Donghun Han, Won Chan Shin, Seunghun Cha, Changsun Pak, Young-Kwang Kim, Sang Woo Kim, Bo Wha Lee, Muhammad Awais, Dongwhi Choi and Jong-Soo Rhyee

Kyung Hee University, Kyung Hee University, Kyung Hee University, R-Materials Co. Ltd., Kyung Hee University, R-Materials Co. Ltd., Hankuk University of Foreign Studies, Hankuk University of Foreign Studies, Kyung Hee University, Kyung Hee University and Kyung Hee University - Institute of Natural Sciences

Downloads 39 (1,196,171)

Abstract:

14.

Portable Triboelectric-Electromagnetic Hybrid Biomechanical Energy Harvester for Driving Various Functional Light-Emitting Diodes with a Wide Range of Wavelengths

Number of pages: 22 Posted: 15 Aug 2023

Yoonsang Ra, Yu-seop Kim, Seonmo Yang, Namgyu Kang, Gyuwon Oh, Chungyeon Cho, Sangmin Lee and Dongwhi Choi

Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Kyung Hee University, Wonkwang University, Chung-Ang University and Kyung Hee University

Downloads 30 (1,318,317)

Abstract:

15.

Exceptional Enhancement of Soft Magnetic Properties in Surface-Oxidized Fe/Fe3o4 Soft Magnetic Composites with Co-Nanoparticle Doping Via Hot Pressing

Number of pages: 21 Posted: 25 Apr 2025

Arif Muhammad, Donghun Han, Seunghun Cha, Changsun Pak, Young-Kwang Kim, Sang Woo Kim, Bo Wha Lee, Muhammad Awais, Dongwhi Choi and Jong-Soo Rhyee

affiliation not provided to SSRN, Kyung Hee University, R-Materials Co. Ltd., Kyung Hee University, R-Materials Co. Ltd., affiliation not provided to SSRN, Hankuk University of Foreign Studies, Kyung Hee University, Kyung Hee University and Kyung Hee University - Institute of Natural Sciences

Downloads 28 (1,359,097)

Abstract:

16.

Shear Thickening and Charge-Storing Interlayer-Based All-Aerosol-Sprayed Wearable Triboelectric Sensor for Industrial Wireless Human-Machine Interfacing

Number of pages: 29 Posted: 01 Feb 2024

Ji Gyo Park, BaekGyu Kim, Jin Yeong Song, Ho Kyoung Lee, Min Chan Kim, Kyu Hyun, Da Seul Shin, Zong-Hong Lin, Dongwhi Choi and Sang Min Park

Pusan National University, Pusan National University, Pusan National University, Pusan National University, Pusan National University, Pusan National University, Korea Institute of Materials Science, National Tsing Hua University, Kyung Hee University and Pusan National University

Downloads 27 (1,359,097)

Abstract:

17.

Hidden Regulator-Based Physically Intelligent Rotational Triboelectric Nanogenerator with Real-Time Tracing of Optimal Working Condition

Number of pages: 28 Posted: 20 Mar 2024

Yoonsang Ra, Yu-seop Kim, Donghan Lee and Dongwhi Choi

Kyung Hee University, Kyung Hee University, Kyung Hee University and Kyung Hee University

Downloads 22 (1,424,331)

Abstract:

18.

Sustainable Reinforcement of Fe-Pb-Sn Alloys Using Copper Nanoparticles Extracted from Waste Sim Cards

Number of pages: 29 Posted: 19 Jul 2025

D. M. Abdo, Hadier Mohammed Zidan, R. M. Abdel-Hameed, Ahmed I. Ali, Dongwhi Choi and Omayma abd-elgwad elkady

affiliation not provided to SSRN, Central Metallurgical Research and Development Institute (CMRDI), affiliation not provided to SSRN, - Industrial Department, Kyung Hee University and affiliation not provided to SSRN

Downloads 19 (1,459,862)

Dongwhi Choi

Kyung Hee University

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