Seoul National University · Engineering
Professor Ji-Hwan Kim's research lab specializes in advanced materials and structural engineering, focusing on the mechanical behavior of functionally graded materials under thermal and mechanical loads, as well as innovative surface engineering techniques for enhancing energy conversion devices. The lab conducts 3D finite element analysis to study large deflection and time-dependent reliability in civil infrastructure, particularly prestressed concrete bridges, while also exploring novel approaches to improve the efficiency of organic solar cells through electrode surface modification. Their work bridges structural integrity, materials science, and sustainable energy technologies.
Figures are computed from collected data and may differ slightly.
ABSTRACT Nonlinear bending analysis of functionally graded plates subjected to uniform pressure and thermal loads is investigated using a 3-D finite element method. Material properties are varied continuously in the thickness direction according to a simple power law distribution. A three-dimensional solid element is used for more accurate modeling of material properties and temperature field in the thickness direction. The Green–Lagrange nonlinear strain-displacement relation is used to account
Stock price prediction has been a subject of significant interest in the financial mathematics field. Recently, interest in natural language processing models has increased, and among them, transformer models, such as BERT and FinBERT, are attracting attention. This study uses a mathematical framework to investigate the effects of human sentiment on stock movements, especially in text data. In particular, FinBERT, a domain-specific language model based on BERT tailored for financial language, wa
Organic electrochemical transistors that employ polymeric mixed conductors as their active channels are one of the most prominent biosensor platforms because of their signal amplification capability, low fabrication cost, mechanical flexibility, and various properties tunable through molecular design. For application to biomedical devices, polymeric mixed conductors should fulfill several requirements, such as excellent conductivities of both holes/electrons and ions, long-term operation stabili
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