Fabrication, characterization, and optical properties of gold nanobowl submonolayer structures.
Fabrication, characterization, and optical properties of gold nanobowl submonolayer structures.
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DOI：
10.1021/la803768y
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发表时间：
2009-01
期刊：
影响因子：
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通讯作者：
J. Ye;P. Van Dorpe;W. Van Roy;G. Borghs;G. Maes
中科院分区：
文献类型：
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作者：
J. Ye;P. Van Dorpe;W. Van Roy;G. Borghs;G. Maes
我们报道了一种基于离子铣削和气相HF蚀刻技术制备中空金纳米碗和复杂金纳米碗（具有核心）的通用方法。通过研磨和刻蚀沉积在基底上的金纳米壳的亚单层来制备两种不同尺寸的中空金纳米碗，并通过扫描电子显微镜（SEM）和原子力显微镜（AFM）来表征其尺寸和形貌。实验和理论研究了不同尺寸的空心金纳米碗的光学性质，显示出从可见光到近红外区域的高度可调谐的等离子体共振。此外，时域有限差分（FDTD）计算显示了增强的局部电磁场周围的空心金纳米碗结构，这表明在表面增强拉曼散射（Sers）光谱的生物分子检测的潜在应用。最后，我们展示了复杂的金纳米碗与金纳米粒子的核心，它提供了创建等离子体杂化纳米结构的能力的制造。
We report on a versatile method to fabricate hollow gold nanobowls and complex gold nanobowls (with a core) based on an ion milling and a vapor HF etching technique. Two different sized hollow gold nanobowls are fabricated by milling and etching submonolayers of gold nanoshells deposited on a substrate, and their sizes and morphologies are characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Optical properties of hollow gold nanobowls with different sizes are investigated experimentally and theoretically, showing highly tunable plasmon resonance ranging from the visible to the near-infrared region. Additionally, finite difference time domain (FDTD) calculations show an enhanced localized electromagnetic field around hollow gold nanobowl structures, which indicates a potential application in surface-enhanced Raman scattering (SERS) spectroscopy for biomolecular detection. Finally, we demonstrate the fabrication of complex gold nanobowls with a gold nanoparticle core which offers the capability to create plasmon hybridized nanostructures.