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超級(jí)老快木蟲之王 (文學(xué)泰斗)
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[求助]
求漢譯英兩段話,謝謝大家!
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1.而利用貴金屬的表面等離子體共振與稀土上轉(zhuǎn)換材料耦合實(shí)現(xiàn)上轉(zhuǎn)換發(fā)光的增效是一種非常有效的手段。我們通過特殊的方法合成貴金屬-稀土納米材料的復(fù)合結(jié)構(gòu)。在合成材料的過程中控制玻璃材料結(jié)構(gòu)與熱處理機(jī)制,同時(shí)調(diào)控金屬納米顆粒與氟化物晶粒尺寸的大小,以及兩種晶粒間距的變化來提高貴金屬的場(chǎng)增強(qiáng)效應(yīng),增強(qiáng)金屬納米粒子的尺寸以增加散射與吸收比,調(diào)控 LSPR 的位置與激發(fā)場(chǎng)相匹配,降低激發(fā)功率密度以抑制飽和效應(yīng)與局域熱效應(yīng),對(duì)獲得高倍的 UCL 增強(qiáng)都十分重要。 2.致密的、較大尺寸的金屬納米顆粒導(dǎo)致更大程度的熱效應(yīng),增加非輻射躍遷,同時(shí)也不利于上轉(zhuǎn)換納米粒子與金屬納米顆粒的接近,不利于上轉(zhuǎn)換熒光增強(qiáng)。采納多孔結(jié)構(gòu)的金屬薄膜有利于縮短上轉(zhuǎn)換納米晶的有效作用距離,同時(shí)可以提高散射與吸收比,達(dá)到增強(qiáng)上轉(zhuǎn)換發(fā)光的效果。 |
至尊木蟲 (著名寫手)
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1.而利用貴金屬的表面等離子體共振與稀土上轉(zhuǎn)換材料耦合實(shí)現(xiàn)上轉(zhuǎn)換發(fā)光的增效是一種非常有效的手段。我們通過特殊的方法合成貴金屬-稀土納米材料的復(fù)合結(jié)構(gòu)。在合成材料的過程中控制玻璃材料結(jié)構(gòu)與熱處理機(jī)制,同時(shí)調(diào)控金屬納米顆粒與氟化物晶粒尺寸的大小,以及兩種晶粒間距的變化來提高貴金屬的場(chǎng)增強(qiáng)效應(yīng),增強(qiáng)金屬納米粒子的尺寸以增加散射與吸收比,調(diào)控 LSPR 的位置與激發(fā)場(chǎng)相匹配,降低激發(fā)功率密度以抑制飽和效應(yīng)與局域熱效應(yīng),對(duì)獲得高倍的 UCL 增強(qiáng)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、較大尺寸的金屬納米顆粒導(dǎo)致更大程度的熱效應(yīng),增加非輻射躍遷,同時(shí)也不利于上轉(zhuǎn)換納米粒子與金屬納米顆粒的接近,不利于上轉(zhuǎn)換熒光增強(qiáng)。采納多孔結(jié)構(gòu)的金屬薄膜有利于縮短上轉(zhuǎn)換納米晶的有效作用距離,同時(shí)可以提高散射與吸收比,達(dá)到增強(qiáng)上轉(zhuǎn)換發(fā)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. |

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