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Refractory Plasmonics without Refractory Materials
Nano Letters ( IF 10.8 ) Pub Date : 2017-09-08 00:00:00 , DOI: 10.1021/acs.nanolett.7b03303
Gelon Albrecht 1, 2 , Stefan Kaiser 1, 2 , Harald Giessen 2 , Mario Hentschel 2
Affiliation  

Refractory plasmonics deals with metallic nanostructures that can withstand high temperatures and intense laser pulses. The common belief was that refractory materials such as TiN are necessary for this purpose. Here we show that refractory plasmonics is possible without refractory materials. We demonstrate that gold nanostructures which are overcoated with 4 and 40 nm Al2O3 (alumina) by an atomic layer deposition process or by thick IC1-200 resist can withstand temperatures of over 800 °C at ambient atmospheric conditions. Furthermore, the alumina-coated structures can withstand intense laser radiation of over 10 GW/cm2 at ambient conditions without damage. Thus, it is possible to combine the excellent linear and nonlinear plasmonic properties of gold with material properties that were believed to be only possible with the lossier and less nonlinear refractory materials.

中文翻译:

无耐火材料的耐火等离子

难熔等离子体处理涉及可以承受高温和强激光脉冲的金属纳米结构。普遍的信念是,为此目的需要诸如TiN之类的耐火材料。在这里,我们证明了在没有耐火材料的情况下,耐火等离子体激元是可能的。我们证明,通过原子层沉积工艺或厚的IC1-200抗蚀剂覆盖有4和40 nm Al 2 O 3(氧化铝)的金纳米结构可以在环境大气条件下承受超过800°C的温度。此外,氧化铝涂层结构可承受超过10 GW / cm 2的强激光辐射在环境条件下无损坏。因此,可以将金的优异的线性和非线性等离激元性质与被认为仅在损耗较大且非线性程度较低的耐火材料中才可能实现的材料性质相结合。
更新日期:2017-09-08
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