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王靈杰金蟲(chóng) (初入文壇)
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| The intensity ratio of the D and G bands (ID/IG) is commonly used to evaluate the quality of carbon materials. No obvious D band was observed for any of the MWCNTs dispersed on substrates (Supplementary Fig. 6), suggesting the high quality of the starting materials. The average ID/IG values were respectively 0.38, 0.30 and 0.28 for our single-, bi- and trilayer GNRs with 10–20-nm widths.Because defect density on the pristine MWCNTs was low, the D-band Raman signal of our GNRs should be mainly due to their open edges24,25. The ID/IG values were lower than those for GNRs obtained by lithographic etching of pristine graphene sheets (ID/IG was ,2 for a bilayer GNR of,28-nm width obtained by lithographic patterning (X. R. Wang et al., unpublished data); see Supplementary Fig. 5),indicating the high quality of our GNRs, in particular the high degree of edge smoothness. |
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8814402
至尊木蟲(chóng) (職業(yè)作家)
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【答案】應(yīng)助回帖
王靈杰(金幣+150, 翻譯EPI+1): 謝謝！ 2011-05-31 11:08:13
| The intensity ratio of the D and G bands (ID/IG) is commonly used to evaluate the quality of carbon materials.D帶和G帶強(qiáng)度比常常用來(lái)評(píng)價(jià)碳材料的質(zhì)量。 No obvious D band was observed for any of the MWCNTs dispersed on substrates (Supplementary Fig. 6), suggesting the high quality of the starting materials. 對(duì)任何分散在基質(zhì)中的MWCNTs，均未能觀(guān)測(cè)到明顯的D帶，提示起始原料良好的質(zhì)量。The average ID/IG values were respectively 0.38, 0.30 and 0.28 for our single-, bi- and trilayer GNRs with 10–20-nm widths. 我們寬度為10-20nm的單、雙和三層GNR的平均ID/IG 值分別為0.38、0.30和0.28。 Because defect density on the pristine MWCNTs was low, the D-band Raman signal of our GNRs should be mainly due to their open edges24,25. 由于原始MWCNT的缺陷密度低，所以我們的GNR的D帶拉曼信號(hào)主要應(yīng)該是由于它們開(kāi)放的邊緣。The ID/IG values were lower than those for GNRs obtained by lithographic etching of pristine graphene sheets (ID/IG was ,2 for a bilayer GNR of,28-nm width obtained by lithographic patterning (X. R. Wang et al., unpublished data); see Supplementary Fig. 5),indicating the high quality of our GNRs, in particular the high degree of edge smoothness.這些ID/IG值比由平板印刷蝕刻原始石墨烯片之軀的GNR的ID/IG值要低，提示我們的GNR具有較好的質(zhì)量，尤其具有高度的邊緣平衡度。 |
2樓2011-05-31 09:43:20
F074
金蟲(chóng) (職業(yè)作家)
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【答案】應(yīng)助回帖
★ ★
Mally89(金幣+2): 感謝應(yīng)助！~歡迎常來(lái)！~ 2011-05-31 12:22:28
Mally89(金幣+2): 感謝應(yīng)助！~歡迎常來(lái)！~ 2011-05-31 12:22:28
| D帶和G帶的強(qiáng)度比通常用來(lái)評(píng)估含碳材料的質(zhì)量。從分散的MWCNTs的底物（補(bǔ)充的圖表6）上沒(méi)有發(fā)現(xiàn)明顯的D帶，不能表明原始材料的高質(zhì)量。平均的ID/IG的比值分別是0.38，0.30，0.28對(duì)應(yīng)于單個(gè)的，兩個(gè)和三個(gè)革蘭氏陰性菌的10-20納米的寬度。有缺點(diǎn)的密度在早期的MWCNTs上很低，革蘭氏陰性菌的D帶的拉曼信號(hào)主要?dú)w功于它們開(kāi)放的邊緣24，25.革蘭氏陰性菌的ID/IG的比值低于這些從原始的石板印刷的已經(jīng)腐蝕的圖表中得到的數(shù)據(jù)（從圖表中獲得的ID/IG的比值是2，對(duì)于雙分子層的革蘭氏陰性菌其寬度是28納米）（X. R. Wang 等未公開(kāi)的數(shù)據(jù)）；參看補(bǔ)充的圖表5），表明我們的革蘭氏陰性菌的高質(zhì)量，部分是高純度的邊緣光滑度。 |
3樓2011-05-31 09:58:23
8814402
至尊木蟲(chóng) (職業(yè)作家)
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4樓2011-05-31 11:15:29
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