| 查看: 1456 | 回复: 3 | ||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | ||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | ||
王灵杰金虫 (初入文坛)
|
[求助]
200金币文献翻译（材料类专业 碳纳米管）
|
|
| The mean diameter of our starting MWCNTs was ,8nm (Fig. 2a and Supplementary Fig. 1a). For 10 s of Ar plasma etching, our method converted ,20% of the MWCNTs into single- or few-layer GNRs of 10–20-nm width (height,,2nm; see Fig. 2). Other products were multilayerGNRs orGNRs with CNT cores (Fig. 1d). The yield of GNRs was limited by the relatively wide diameter distribution of the starting MWCNTs used (Supplementary Information). All of the width data were obtained after correcting the tip-size effect1. Within the resolution of atomic force microscopy (AFM), the edges of the obtained GNRs were very smooth. Unlike for previous GNRs, the ribbons were uniform in width along their lengths, none being wedge shaped1, owing to the quasi-one-dimensional CNT templates with uniform diameter along their lengths. According to histogram data on GNRs (Supplementary Fig. 1b, c), the widths of our GNRs mostly fell into the range 10–20nm, which is narrower than that of GNRs made by the sonochemical method1. The width of 10–20nm corresponds to half of the circumference of the startingMWCNTs with the mean diameter of,8nm.The heights of ourGNRs were,0.8, 1.3 and 1.8nm, which we assign to single-, bi- and trilayer GNRs, respectively 22. The folding observed in single-layer GNRs (Fig. 2e, f, i) suggests that the flexibility of the GNRs is excellent in comparison with that of MWCNTs. The folds resulted from bending of the PMMA film23 and/or the perturbation of liquid during the removal of the PMMA in acetone. |
回复此楼» 猜你喜欢
论文终于录用啦！满足毕业条件了
已经有12人回复
-
2025年遐想
已经有4人回复
-
投稿Elsevier的杂志（返修），总是在选择OA和subscription界面被踢皮球
已经有8人回复
-
求个博导看看
已经有18人回复
tianl
金虫 (正式写手)
- 翻译EPI: 1
- 应助: 8 (幼儿园)
- 金币: 3268.2
- 散金: 200
- 红花: 2
- 帖子: 787
- 在线: 488.6小时
- 虫号: 1303070
- 注册: 2011-05-22
- 性别: GG
- 专业: 无机非金属基复合材料
2楼2011-05-31 13:24:40
tianl
金虫 (正式写手)
- 翻译EPI: 1
- 应助: 8 (幼儿园)
- 金币: 3268.2
- 散金: 200
- 红花: 2
- 帖子: 787
- 在线: 488.6小时
- 虫号: 1303070
- 注册: 2011-05-22
- 性别: GG
- 专业: 无机非金属基复合材料
【答案】应助回帖
王灵杰(金币+120, 翻译EPI+1): 感谢啊，翻译的很专业！！！ 2011-05-31 14:09:59
| 我们采用的多壁碳纳米管（MWCNTs）的平均直径为8nm（见图2a和附件 图1a）。在我们使用的方法中，经过10秒钟氩气等离子刻蚀，20%的MWCNTs转变为10~20nm宽的单层或少数层石墨烯纳米带（GNRs）（厚度2nm，见图2）。其他产物为多层GNRs或者缠绕在CNTs上的GNRs（图1的）。生成的GNRs的尺寸受到所采用的MWCNRs的相对宽的直径分布的限制（见附件）。所有的宽度数据都是经过针尖大小效应的矫正后获得的。在原子力显微镜（AFM）的分辨率内，所得GNRs的边缘是非常平滑的。与之前的GNRs不同，这些纳米带沿着他们的长度方向的宽度是一致的，不存在楔形，这是由于准一维的碳纳米管模板具有在长度方向上统一的直径。根据GNRs的柱状图数据（附件 图1b，c）来看，我们获得的GNRs的宽度大部分落在10~20nm之间，这比采用生化学法得到的GNRs的分布窄。10~20nm的宽度对应平均直径8nm的原始MWCNTs周长的一半。所得CNRs的厚度分别为0.8,1.3,1.8nm，分别对应单层，双层和三层GNRs。在单层GNRs中看到的褶皱表明GNRs具有比MWCNTs更优异的的柔韧性。褶皱的结果是从聚甲基丙烯酸甲酯（PMMA）膜的弯曲和在丙酮中去除PMMA时液体的扰动中获得的。 |
4楼2011-05-31 14:01:41