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  1. No Access

    Article

    Silver nanowire/graphene oxide electrode for electrochemical detection of lead ions

    A new approach for fabricating high-performance electrochemical sensors for lead ion detection using the square-wave anodic strip** voltammetry method was developed. The sensor consisted of a working electro...

    Thi Thu Hien Nguyen, Thi Hai Yen Pham, Tien Dat Doan, Nhung Hac Thi in Chemical Papers (2022)

  2. No Access

    Article

    Improved Photovoltaic Performance of Ternary All-Polymer Solar Cells by Incorporating a New Y6-based Polymer Acceptor and PC61BM

    Recently, all-polymer solar cells (all-PSCs) have realized significantly improved power conversion efficiencies (PCEs) through the development of various high-performance polymer donors and polymer acceptors. ...

    Hong Diem Chau, Meenal Kataria, Na Yeon Kwon, Su Hong Park in Macromolecular Research (2022)

  3. Article

    Open Access

    Deep learning for development of organic optoelectronic devices: efficient prescreening of hosts and emitters in deep-blue fluorescent OLEDs

    The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies, which are key factors in optoelectronic devices, must be accurately estimated for newly designed materials...

    Minseok Jeong, Joonyoung F. Joung, **hyo Hwang, Minhi Han in npj Computational Materials (2022)

  4. Article

    Open Access

    Map** the broadband circular dichroism of copolymer films with supramolecular chirality in time and space

    Measurements of the electronic circular dichroism (CD) are highly sensitive to the absolute configuration and conformation of chiral molecules and supramolecular assemblies and have therefore found widespread ...

    Marius Morgenroth, Mirko Scholz, Min Ju Cho, Dong Hoon Choi in Nature Communications (2022)

  5. No Access

    Chapter and Conference Paper

    Measuring Three-Dimensional Surface Deformations of Skin Using a Stereoscopic System and Intrinsic Features

    Measurement of three-dimensional (3D) surface deformations is an important step in characterising mechanical properties and develo** computational models . Compared to two-dimensional , the ability to acqu...

    Amir HajiRassouliha, Debbie Zhao, Dong Hoon Choi in Computational Biomechanics for Medicine (2022)

  6. No Access

    Article

    Numerical Automated Stiffness Optimization of a Thin Television Back-Cover Module: Research on the Industrial Problem

    This paper proposes a global optimization method to ensure maximum stiffness and minimum material cost without deforming the thin organic light-emitting diode (OLED) TV module when electrogalvanized and galvan...

    Daesung Kwon, Seung-Wook Kim, Dong-Hoon Choi in International Journal of Precision Enginee… (2021)

  7. No Access

    Article

    Effect of Fused Thiophene Bridges on the Efficiency of Non-Fullerene Polymer Solar Cells made with Conjugated Donor Copolymers Containing Alkyl Thiophene-3-Carboxylate

    New wide-bandgap donor-acceptor-π type conjugated polymers, PBTTT and PBTDTT, containing different π-extended conjugated bridges between benzodithiophene (BDT) as a donating unit and 3-carboxylthiophene (3CT) as ...

    Su Hong Park, Jong-Soo Ahn, Na Yeon Kwon, Chau Hong Diem in Macromolecular Research (2021)

  8. No Access

    Article

    Optimal Design of PEDOT:PSS Polymer-Based Silver Nanowire Electrodes for Realization of Flexible Polymer Solar Cells

    In this study, polyethylene 2,6-naphthalate (PEN) was selected as a substrate to fabricate a flexible conducting electrode through the solution process. The sandwiched silver nanowire (AgNW) electrode between ...

    Young Un Kim, Su Hong Park, Nguyen Thanh Nhan, Mai Ha Hoang in Macromolecular Research (2021)

  9. Article

    Open Access

    The Dynamic Response of Sweat Chloride to Changes in Exercise Load Measured by a Wearable Sweat Sensor

    Wearable sensors enable the monitoring of an individual’s sweat composition in real time. In this work, we recorded real-time sweat chloride concentration for 12 healthy subjects in three different protocols i...

    Dong-Hoon Choi, Grant B. Kitchen, Kerry J. Stewart, Peter C. Searson in Scientific Reports (2020)

  10. Article

    Open Access

    Out-of-clinic measurement of sweat chloride using a wearable sensor during low-intensity exercise

    Wearable sensors have the potential to enable measurement of sweat chloride outside the clinic. Here we assess the feasibility of mild exercise as an alternative to pilocarpine iontophoresis for sweat generati...

    Dong-Hoon Choi, Grant B. Kitchen, Mark T. Jennings in npj Digital Medicine (2020)

  11. No Access

    Article

    Synthesis of gold nanoparticles supported at graphene derivatives using green reductants and evaluation of their catalytic activity in 4-nitrophenol reduction

    In this study, gold nanoparticles were supported at graphene derivatives (AuNPs@GDs) from chloroauric acid and graphene oxide (GO) by using sodium citrate, L-ascorbic acid, and 4-(2-hydroxyethyl)-1-piperazinee...

    Dong Hoon Choi, Jee Eun Hong, Yeonghun Jung, Hye In Park, Seung Tae Baek in Gold Bulletin (2019)

  12. Article

    Open Access

    Two Distinct Types of Sweat Profile in Healthy Subjects While Exercising at Constant Power Output Measured by a Wearable Sweat Sensor

    Wearable sweat sensors have enabled real-time monitoring of sweat profiles (sweat concentration versus time) and could enable monitoring of electrolyte loss during exercise or for individuals working in extrem...

    Dong-Hoon Choi, Grant Kitchen, Ji Soo Kim, Yi Li, Kain Kim in Scientific Reports (2019)

  13. No Access

    Article

    Robust design optimization of an angular contact ball bearing under manufacturing tolerance

    The performances of an angular contact ball bearing (ACBB) are influenced by its geometric dimensions that can have uncertainty due to manufacturing tolerances. Uncertainty of these geometric dimensions result...

    Kibong Kang, Seung-Wook Kim, Kichan Yoon in Structural and Multidisciplinary Optimizat… (2019)

  14. No Access

    Article

    Efficient progressive polynomial approximate optimization

    This study proposes efficient progressive polynomial approximate optimization (ePPAO) which is a new function-based sequential approximate optimization algorithm. ePPAO finds an improved design than an initial...

    Dong-Heum Ryu, Yongbin Lee, Dong-Hoon Choi in Structural and Multidisciplinary Optimization (2018)

  15. No Access

    Article

    Synthesis of Conjugated Wide-Bandgap Copolymers Bearing Ladder-Type Donating Units and Their Application to Non-Fullerene Polymer Solar Cells

    Two new wide-bandgap conjugated copolymers, T-3MT and 2T-3MT, containing methyl-3-thiophenecarboxylate (3MT) as a weak accepting unit and indacenodithiophene (IDT) or indacenodithienothiophene (IDTT) as ladder-ty...

    Mai Ha Hoang, Gi Eun Park, Dinh Long Phan, Trinh Tung Ngo in Macromolecular Research (2018)

  16. Article

    Neuroprotective effect of treadmill exercise possibly via regulation of lysosomal degradation molecules in mice with pharmacologically induced Parkinson’s disease

    Dysfunction of mitophagy, which is a selective degradation of defective mitochondria for quality control, is known to be implicated in the pathogenesis of Parkinson’s disease (PD). However, how treadmill exerc...

    Dong-Joo Hwang, Jung-Hoon Koo, Ki-Cheon Kwon in The Journal of Physiological Sciences (2018)

  17. No Access

    Article

    Surrogate-based global optimization using an adaptive switching infill sampling criterion for expensive black-box functions

    Surrogate-based global optimization algorithms use a surrogate model along with a sampling criterion. The AMP-SBGO algorithm sequentially samples points to gradually find the global optimum. The sampling crite...

    In-Bum Chung, Dohyun Park, Dong-Hoon Choi in Structural and Multidisciplinary Optimization (2018)

  18. No Access

    Chapter and Conference Paper

    Surrogate Based Global Optimization Using Adaptive Switching Infill Sampling Criterion

    A novel infill sampling criterion is proposed for a surrogate based global optimization algorithm. Due to the extensive amount of calculations required for the meta-heuristic global optimization methods, a sur...

    Dohyun Park, In-Bum Chung, Dong-Hoon Choi in Advances in Structural and Multidisciplina… (2018)

  19. No Access

    Article

    Simulation-based turbofan shape optimization for reducing power consumption and noise of a bladeless circular ceiling air conditioner

    Typical ceiling air conditioners are rectangular shaped with four air flow outlets placed orthogonally to each other. Such configuration has its disadvantages as it creates an air flow deadzone where the air c...

    Yong-Hun Kang, In-Bum Chung, Dong-Hoon Choi in International Journal of Precision Enginee… (2017)

  20. No Access

    Article

    Comparison study of sampling methods for computer experiments using various performance measures

    This study compares the performance of popular sampling methods for computer experiments using various performance measures to compare them. It is well known that the sample points, in the design space located...

    Inyong Cho, Yongbin Lee, Dongheum Ryu in Structural and Multidisciplinary Optimizat… (2017)

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