Photochemically patterned metal nanoparticle strontium barium niobate surfaces with tunable wettability, enhanced Raman scattering, and fluorescence emission
Photochemically patterned metal nanoparticle strontium barium niobate surfaces with tunable wettability, enhanced Raman scattering, and fluorescence emission
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DOI：
10.1063/1.5089746
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发表时间：
2019-07-01
影响因子：
4
通讯作者：
Kumar, Amit
中科院分区：
文献类型：
--
作者：
Barnes, Eftihia;Soblosky, Lauren;Kumar, Amit
光化学图案化的金属纳米颗粒铌酸锶钡 (SBN) 表面表现出可调的表面润湿性，这取决于紫外光沉积时间和沉积的金属纳米颗粒的类型，即银或金。利用贵金属纳米颗粒的等离子体特性，我们证明了金属纳米颗粒 SBN 表面探针分子的增强拉曼散射和荧光发射。此外，铁电光刻能够在微尺度上创建稳定的相反极化的铁电域，从而产生空间上不同的金属颗粒沉积图案和相应的拉曼响应。结果清楚地表明，可以使用铁电光刻来设计适合增强化学传感的金属纳米颗粒/SBN 表面，并且可能对实现微流体或基于液滴的表面增强拉曼散射 (SERS) 传感器产生影响。 (C) 2019 年作者。
Photochemically patterned metal nanoparticle Strontium Barium Niobate (SBN) surfaces are shown to exhibit tunable surface wettability which depends on the UV photodeposition time and the type of deposited metal nanoparticle, namely, silver or gold. Taking advantage of plasmonic properties of noble metal nanoparticles, we demonstrate enhanced Raman scattering and fluorescence emission of a probe molecule from the metal nanoparticle SBN surfaces. Further, ferroelectric lithography enables the creation of stable oppositely polarized ferroelectric domains, at the microscale, giving rise to spatially distinct metal particle deposition patterns and corresponding Raman responses. The results clearly demonstrate that metal nanoparticle/SBN surfaces suitable for enhanced chemical sensing can be designed using ferroelectric lithography and could have implications for realization of microfluidic or liquid droplet-based Surface Enhanced Raman Scattering (SERS) sensors. (C) 2019 Author(s).