Title Optical structure engineering of thin films for photonic applications Abstract Flow of light waves propagating inside an optical medium is affected by the light-induced polarizability and interfacial dipolar response of materials. In addition, since the light is electromagnetic waves of which governing equations are generally reducible to...
Abstract Band engineering is an effective strategy to improve the electronic transport properties of semiconductors. In thermoelectric materials research, density-of-states effective mass is an undoubted key factor in verifying the band engineering effect and establishing a strategy for enhancing thermoelectric performance. However, estimation of the effective...
Chul-Ho Lee1, 2 1KU-KIST Graduate School of Converging Science & Technology, 2Department of Integrative Energy Engineering, Korea University, Seoul 02841, Republic of Korea Two-dimensional (2D) semiconductors such as transition metal dichalcogenides (TMDs) have emerged as a promising material for implementing beyond-CMOS electronics due to excellent gate coupling...
Next-generation optoelectronics based on two-dimensional semiconductors Hyungjin Kim1* 1 Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea With the innovation of technologies that will impact our daily life such as the internet of things (IoT), wearable health care systems, digitally extended...
Machine Learning approach in designing catalytic alloy nanoparticle YongJoo Kim, Department of Materials Science and Engineering, Kookmin University Abstract : Searching for an optimal component and composition of multi-metallic alloy catalysts, comprising two or more elements, is one of the key issues in catalysis research. Due to the...
In the first topic, we demonstrate the flexoelectric-boosted electromechanical properties of piezoelectric nanoparticles using an induced built-in strain gradient in heterogeneous core-shell nanostructure. The composition-graded core-shell structure of BaTiO3@SrTiO3 nanoparticles enables a significant increment of the effective piezoelectric charge coefficient via the chemical heterogeneities-induced lattice strain gradient. Through...
In-situ transmission electron microscopy (TEM) technique allows us to direct visualize dynamic process of materials under the working conditions with atomic resolution. In this talk, I will introduce in-situ TEM systems and on-going research regarding the discovery and observation of metal-hydrides using it. I discovered new...
Recently, two-dimensional (2D) van der Waals (vdW) multilayer materials consisting of multiple conducting layers have explored intensively as a promising candidate for optoelectronic applications. But, to further provide a clear development road map, an accurate static and low-frequency (LF) noise characterization should be performed in...
Tissue engineering is an interdisciplinary field aimed at maintaining, restoring and pr omoting the normal function of organs and tissues using biomaterials and live cells by incorporating concepts from materials science, bio engineering, biological sciences, and medicine. Understanding the interface between biomaterials and cells is...
Realizing a clinical-grade electronic medicine for peripheral nerve disorders is challenging owing to the lack of rational material design that mimics the dynamic mechanical nature of peripheral nerves. Specifically, long-term stability of devices interfacing peripheral nerves is challenging, since dynamic mechanical deformations in peripheral nerves...
