| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
A Metal Induced Color Tuning of Upconversion Nanoparticles for Multi-Level Security application |
| 초록 |
We modulated color of rare-earth-doped upconverting nanocrystals (UCNs) via noble metal nanoparticle growth. UCNs convert continuous-wave near infrared light (NIR) to visible range luminescence through an anti-Stoke emission process. The luminescence color of the UCNs is altered by modifying the relative fraction of the lanthanide dopants. Here, we synthesized noble metal nanoparticles in the polymeric 3D structure. Surface plasmon resonance (SPR) band of metal nanoparticle eliminates particular wavelength and permits luminescence color change emitted from UCNs. By controlling metal nanoparticles morphology, we generated various surface plasmon resonance band which triggers both of optical color transition under the visible light and luminescent color transition under the infrared light. This dual-color transition system opens a new horizon for multi-level security application. |
| 저자 |
유영훈, 이지석
|
| 소속 |
울산과학기술원 |
| 키워드 |
upconverting nanocrystals (UCNs); metal nanoparticle; Surface plasmon resonance; multi-level security
|
| E-Mail |
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