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超级老快

木虫之王 (文学泰斗)

[求助] 求汉译英两段话,谢谢大家!

1.而利用贵金属的表面等离子体共振与稀土上转换材料耦合实现上转换发光的增效是一种非常有效的手段。我们通过特殊的方法合成贵金属-稀土纳米材料的复合结构。在合成材料的过程中控制玻璃材料结构与热处理机制,同时调控金属纳米颗粒与氟化物晶粒尺寸的大小,以及两种晶粒间距的变化来提高贵金属的场增强效应,增强金属纳米粒子的尺寸以增加散射与吸收比,调控 LSPR 的位置与激发场相匹配,降低激发功率密度以抑制饱和效应与局域热效应,对获得高倍的 UCL 增强都十分重要。

2.致密的、较大尺寸的金属纳米颗粒导致更大程度的热效应,增加非辐射跃迁,同时也不利于上转换纳米粒子与金属纳米颗粒的接近,不利于上转换荧光增强。采纳多孔结构的金属薄膜有利于缩短上转换纳米晶的有效作用距离,同时可以提高散射与吸收比,达到增强上转换发光的效果。
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genhunter

至尊木虫 (著名写手)

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超级老快: 金币+110, ★★★很有帮助 2016-12-01 20:18:37
1.而利用贵金属的表面等离子体共振与稀土上转换材料耦合实现上转换发光的增效是一种非常有效的手段。我们通过特殊的方法合成贵金属-稀土纳米材料的复合结构。在合成材料的过程中控制玻璃材料结构与热处理机制,同时调控金属纳米颗粒与氟化物晶粒尺寸的大小,以及两种晶粒间距的变化来提高贵金属的场增强效应,增强金属纳米粒子的尺寸以增加散射与吸收比,调控 LSPR 的位置与激发场相匹配,降低激发功率密度以抑制饱和效应与局域热效应,对获得高倍的 UCL 增强都十分重要。
It is a very effective approach to enhance upconversion luminescence  through the coupling of noble metal surface plasmon and rare earth upconversion nanomaterial.  We synthesized noble metal and rare earth nanomaterial  compounded structures. By controlling the structure of glass support and heat treatment procedure, we simultaneously controlled the sizes of metal nanoparticles and fluoride crystals,  and the distance between crystals to increase the enhanced field effect by noble metal. We  increased the sizes of metal nanopartciles to increase the ratio of scattering and absorption, adjusted (or fine tuned) the location (or position) of LSPR to  match with the excitation field, and reduced the power density of the excitation  light to suppress the saturation effect and the local thermal effect. All these details were very important to achieve high levels of  UCL enhancement.

2.致密的、较大尺寸的金属纳米颗粒导致更大程度的热效应,增加非辐射跃迁,同时也不利于上转换纳米粒子与金属纳米颗粒的接近,不利于上转换荧光增强。采纳多孔结构的金属薄膜有利于缩短上转换纳米晶的有效作用距离,同时可以提高散射与吸收比,达到增强上转换发光的效果。

Dense and relative large sized metal nanoparticles led to more thermal effect and increased non-radiation transition, which counteracted with the likelihood that  the upconversion nanomaterial and metal nanoparticles come close to each other, and thus was against the enhancement effect on upconversion fluorescence.  The use of porous thin metal film helped to reduce the effective distance for interaction among upconversion nanocrystals, at the same time raised the ratio of scattering and absorption , to enhance upconversion luminescence.
离成功还差一点
2楼2016-12-01 19:48:47
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