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We concentrate on creating innovative processing techniques that can generate tiny unit structures through precise control of ionic and atomic-level properties, which are the foundation of matter. This gives us the flexibility to manufacture multi-scale structures with a wide range of size features (micro-/nano-/atomic-). Additionally, improving and optimizing the design and composition of these structures is a significant area of research to enhance the structures and enchant them with desirable properties for advanced energy and environmental devices.
우리 연구실은 모든 가공물의 가장 기본형인 이온 및 원자 단계에서부터 물질을 정교하게 제어하며 미세한 구조체 기본단위를 생산할 수 있는 신개념의 공정 기술을 개발하고, 이를 통해 다중-스케일(마이크로-/나노-/원자수준-)의 크기 특성을 갖는 구조물을 자유로이 제조하는 기술 개발에 집중합니다. 한 걸음 더 나아가, 첨단 적용분야(에너지/환경 소자)에서 원하는 특성을 갖도록 해당 기본 구조물을 합리적으로 설계하고 복합하여, 고성능 소자를 개발하는 것 또한 중요한 연구 목표로 하며, 관련 연구를 활발히 진행하고 있습니다.
(1) Ultrafine Basis Material Engineering
Multifarious types of nano-/micro-structures can be achieved through innovative self-assembly processes under considerations of mechanical, chemical, and electrical properties.
Our interests include, but are not limited to:
a. Nano-particles, -wires, -fibers
b. Thin films & surface modifications
c. 3-dimensional (3D) nano-structures
d. Functionally designed hybrid nano-architectures
(2) Nano-Manufacturing Processes
Our group has recently focused on researching the following nano-manufacturing processes to prepare targeted nanomaterials and devices:
a. Basic chemical synthesis
b. Coating & printing processes
c. Electrospinning processes
d. Spray pyrolysis processes
e. Roll-to-roll mass-production systems
(3) Simulations & Optimizations
Developed innovative nano-materials and nano-structures are hybridized to design the optimal form for the target device application. During this procedure, various commercial simulation tools are applied to perform research that optimizes theoretical device performance.
a. Micro-mechanical analysis
b. Electrochemical analysis
c. Surface analysis (DFT calculation)
As the materials we deal with become smaller, surface characteristics become increasingly dominant. Therefore, our group plans to accumulate surface analysis techniques such as Density Functional Theory (DFT) calculation or Molecular Dynamics (MD) simulation to reflect this demand.
However, rather than researching the numerical analysis itself, our group places emphasis on the appropriate utilization of reliable numerical analysis tools.
(4-1) Device Engineering: Energy
Our current research focus is primarily on energy and environmental issues. We are specifically pursuing technologies such as supercapacitors, Li-ion hybrid capacitors, Li-ion batteries, and advanced batteries.
The advanced battery category includes next-generation Li-batteries, solid-state batteries, and alternative batteries such as Zn-, Mg-, and Al-batteries.
Our goal is to achieve the following features for future batteries:
a. Ultrafast-Charging (초고속 충전)
b. High-Energy-Density (고 용량)
c. Long lifespan (장 수명)
b. Non-flammability & safety (고 안전성)
e. Cost-effectiveness (저 비용)
(4-2) Device Engineering: Electronics
In addition to our work in energy-related research, we are also interested in thin film electronics. Our research includes OLED and quantum dot displays, printed circuit boards, transparent electrodes, and stretchable electronics.
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