Seminar
| Date | 2024-11-26 |
|---|---|
| Time | 16:00 |
| Title | Avalanche in Nanoparticles |
■ 제 목: Avalanche in Nanoparticles
■ 연 사: 이창환 교수 (KAIST 신소재공학과)
■ 일 시: 2024년 11월 26일(화) 오후 4시
■ 장 소: 응용공학동 1층 영상강의실
■ Abstract :
Recently, photon avalanche has been observed in single nanoparticles, offering building blocks for a wide range of applications in high-sensitivity pressure and temperature sensing and super-resolution optical imaging with simple confocal microscopy. In this talk, I will discuss photoswitching behavior of Tm3+-doped avalanching nanocrystals. I will explain the photoswitching mechanism associated with color center generation and address the enhancement of photoswitching capability realized in inorganic nanocrystals. Following that, I will introduce applications of these photoswitchable nanocrystals including 2D and 3D optical patterning using low-cost continuous-wave lasers and super-resolution optical microscopy with sub-angstrom localization accuracy. I will conclude this talk by providing potential future applications of these highly nonlinear photoswitchable nanomaterials.