결정결함 연구실Atomic-Scale Defects Research Lab. KAIST 정성윤 교수 신소재공학과 Homepage Profile Video FAQ 연구실 소개 Direct Observation & Control of Lattice Defects in Energy Materials• Materials Physics and Defect Chemistry for Energy Storage and Conversion• Atomic-Level Visualization with TEM/STEM Keywords 결함화학 에너지 재료 전자현미경 defect chemistry electron microscopy energy materials