适用于近场光学有源尖端的荧光氧化物纳米颗粒
Fluorescent oxide nanoparticles adapted to active tips for near-field optics
摘要：
我们提出了一种新的荧光氧化物纳米粒子的性能非常适合于基于有源尖端的近场光学。这些平均直径在5-10 nm范围内的颗粒通过低能团簇束沉积（LECBD）从YAG：Ce 3+靶产生。利用透射电子显微镜（TEM）、X射线光电子能谱学（XPS）、经典光致发光、阴极发光和近场扫描光学显微镜（NSOM）对它们进行了研究。观察到尺寸小至10 nm的极端光稳定性颗粒。这些发射器被验证为活性NSOM尖端的构建块，通过直接在LECBD反应器中用10 nm厚的YAG：Ce 3+颗粒层涂覆标准光学尖端，并随后对测试表面进行NSOM成像。
英文摘要：
We present a new kind of fluorescent oxide nanoparticles with properties well suited to active-tip based near-field optics. These particles with an average diameter in the range 5-10 nm are produced by Low Energy Cluster Beam Deposition (LECBD) from a YAG:Ce3+ target. They are studied by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), classical photoluminescence, cathodoluminescence and near-field scanning optical microscopy (NSOM). Particles of extreme photo-stability as small as 10 nm in size are observed. These emitters are validated as building blocks of active NSOM tips by coating a standard optical tip with a 10 nm thick layer of YAG:Ce3+ particles directly in the LECBD reactor and by subsequently performing NSOM imaging of test surfaces.
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