Dohyeon Lee

ORCID: 0000-0003-0977-3723
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About
Contact & Profiles
Research Areas
  • Mobile Ad Hoc Networks
  • Advanced battery technologies research
  • Opportunistic and Delay-Tolerant Networks
  • Electrocatalysts for Energy Conversion
  • Topic Modeling
  • Natural Language Processing Techniques
  • Wireless Networks and Protocols
  • Electrospun Nanofibers in Biomedical Applications
  • Multimodal Machine Learning Applications
  • Graphene and Nanomaterials Applications
  • Fuel Cells and Related Materials
  • Vehicular Ad Hoc Networks (VANETs)
  • Technology and Data Analysis
  • Cooperative Communication and Network Coding
  • Digital Holography and Microscopy
  • Advanced Materials and Mechanics
  • Monetary Policy and Economic Impact
  • Speech Recognition and Synthesis
  • Supercapacitor Materials and Fabrication
  • Infrared Thermography in Medicine
  • Advanced Battery Technologies Research
  • Korean Urban and Social Studies
  • Speech and dialogue systems
  • Ergonomics and Musculoskeletal Disorders
  • Thermoregulation and physiological responses

Pohang University of Science and Technology
2023-2025

Incheon National University
2020-2024

Korea Advanced Institute of Science and Technology
2021-2023

Jeonbuk National University
2023

Gyeongsang National University
2023

Korea University
2022

Kootenay Association for Science & Technology
2022

Seoul National University
2021-2022

Yonsei University
2021-2022

Korea National University of Transportation
2021

Advancements in micro/nanofabrication have enabled the realization of practical micro/nanoscale photonic devices such as absorbers, solar cells, metalenses, and metaholograms. Although performance these has been improved by enhancing design flexibility structural materials through advanced fabrication methods, achieving large-area high-throughput tiny remains a challenge. In this aspect, various technologies investigated for realizing mass production consisting micro/nanostructural...

10.3788/pi.2023.r04 article EN cc-by Photonics Insights 2023-01-01

In wireless ad hoc networks, nodes compromise to forward packets for each other communicate beyond their transmission range. Therefore, networks are vulnerable wormhole attacks launched through compromised because malicious can easily participate in the networks. attacks, one node tunnels from its location node. Such result a false route with fewer. If source chooses this fake route, have option of delivering or dropping them. It is difficult detect impersonate legitimate nodes. Previous...

10.1109/sutc.2008.49 article EN 2008-06-01

Methanol crossover is one of the largest problems in direct methanol fuel cells (DMFCs). passing from anode to cathode through membrane oxidized at cathode, degrading DMFC performance, and intermediates oxidation reaction (MOR) cause catalyst poisoning. Therefore, it essential develop a capable inhibiting MOR while promoting oxygen reduction (ORR), which typical DMFCs. In this study, carbon-encapsulated Pt was synthesized for purpose. The simply by heat treatment Pt-aniline complex-coated...

10.1021/acsami.0c07812 article EN ACS Applied Materials & Interfaces 2020-09-14

Bacterial heterogeneity is pivotal for adaptation to diverse environments, posing significant challenges in microbial diagnostics and therapeutic interventions. Recent advancements high-resolution optical microscopy have revolutionized our ability observe characterize individual bacteria, offering unprecedented insights into their metabolic states behaviors at the single-cell level. This review discusses transformative impact of various imaging techniques, including fluorescence label-free...

10.48550/arxiv.2501.01592 preprint EN arXiv (Cornell University) 2025-01-02

Stem cells derived from dental tissues—dental stem cells—are favored due to their easy acquisition. Among them, pulp (DPSCs) extracted the have many advantages, such as high proliferation and a highly purified population. Although ability for neurogenic differentiation has been highlighted using electrospun nanofibers (NFs) performed, graphene-incorporated NFs never applied DPSC differentiation. Here, reduced graphene oxide (RGO)-polycaprolactone (PCL) hybrid were developed enhanced...

10.3390/nano8070554 article EN cc-by Nanomaterials 2018-07-21

A carbon matrix with desiccation cracks serves as a porous transport layer for PEMWE, enhancing the electrochemical performance and stability of Ir nanoparticles oxygen evolution reaction.

10.1039/d3ta01798b article EN Journal of Materials Chemistry A 2023-01-01

Intrusion detection systems are the basis of system protection from network attacks. However, intrusions increasingly taking multi-stage procedures to attack a system, and cannot be detected by existing single stage intrusion systems. This paper proposes architecture using hidden Markov model algorithm. considers every used recent applies them algorithm determine which is in audit data. reduces overheads agents raises efficiency whole system.

10.1109/iciss.2008.22 article EN 2008-01-01

A promising route has been employed to prepare nickel nanoparticles encapsulated by carbon shell with enhanced catalytic activity and durability for electro-oxidation of urea.

10.1039/d1qm00305d article EN Materials Chemistry Frontiers 2021-01-01

Optical diffraction tomography (ODT) enables the three-dimensional (3D) refractive index (RI) reconstruction. However, when RI difference between a sample and medium increases, effects of light scattering become significant, preventing acquisition high-quality accurate reconstructions. Herein, we present method for high-fidelity ODT by introducing non-toxic matching media. Optimally reducing contrast enhances fidelity accuracy 3D reconstruction, enabling visualization morphology...

10.1364/boe.465066 article EN cc-by Biomedical Optics Express 2022-11-14

Fe, Ni, and Co their alloys are widely studied for oxygen evolution reaction hydrogen in electrocatalytic water splitting under alkaline conditions, pentlandite sulfide was found to enhance the catalytic activity reactions. In this study, synthesis of tried by a ball milling subsequent pyrolysis. It proved that method is promising way formation simultaneous carbon encapsulation. An aniline monomer played role source encapsulation, ammonium persulfate provided sulfur formation. Three kinds...

10.1002/er.7372 article EN International Journal of Energy Research 2021-10-10

Enwrapping metal nanoparticles with a carbon shell is promising method for enhancing the stability of catalysts. However, thickness control has not been studied extensively. In this study, Pt catalyst was synthesized, and controlled via partial oxidation layer. During cooling step carbonization process, various concentrations oxygen were supplied, changes in layer investigated according to concentration. The characteristics examined using transmission electron microscopy, X-ray diffraction,...

10.1021/acsaem.1c03098 article EN ACS Applied Energy Materials 2022-01-12
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