| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
자연 모사형 광학소재 합성 및 응용 |
| 제목 |
Ultrasmooth, Highly Spherical Monocrystalline Gold Particles for Precision Plasmonics |
| 초록 |
Ultrasmooth, highly spherical monocrystalline gold particles were prepared by a cyclic process of slow growth followed by slow chemical etching, which selectively removes edges and vertices. The etching process effectively makes the surface tension isotropic, so that spheres are favored under quasi-static conditions. It is scalable up to particle sizes of 200 nm or more. The resulting spherical crystals display uniform scattering spectra and consistent optical coupling at small separations, even showing Fano-like resonances in small clusters. The high monodispersity of the particles we demonstrate should facilitate the self-assembly of nanoparticle clusters with uniform optical resonances, which could in turn be used to fabricate optical metafluids. Narrow size distributions are required to control not only the spectral features but also the morphology and yield of clusters in certain assembly schemes. |
| 저자 |
이기라1, 이계행2, 이승우1, 이유진1, 김동관1
|
| 소속 |
1성균관대, 2한국기초과학지원(연) |
| 키워드 |
Gold nanospheres; Metamolecules
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| E-Mail |
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