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| 1 | 石墨烯转移工艺对石墨烯传感器检测汞离子的影响显示文摘本工作采用化学气相沉积法(CVD)石墨烯制备场效应晶体管(FET)传感器,在石墨烯表面修饰DNA,用于检测汞离子.为探索转移方法对石墨烯传感器件性能的影响,制备了3种不同转移工艺的石墨烯样品,分别是PMMA转移方法中退火烧除PMMA的石墨烯、用丙酮洗去PMMA的石墨烯和Au转移的石墨烯,对石墨烯样品进行拉曼光谱、分光光度计、光学显微镜(OM)、扫描探针显微镜(SPM)的表征.通过FET转移特性曲线的输出,得到汞离子对石墨烯掺杂情况的变化,从而考察了各种石墨烯传感器对汞离子的检测性能.结果表明,Au转移的石墨烯表面清洁程度最佳,SPM图像显示其表面平坦无杂质,表面粗糙度(Ra)仅为0.45 nm.用该种石墨烯制备的传感器件对汞离子检测的检测限达10 p M,且FET的狄拉克点变化也最大,达-0.132 V. | 李小晴 叶辰 林正得 江南 | 2018 | 材料科学与工艺2018,26,4: | 1 |
| 2 | The art of designing carbon allotropes显示文摘Stimulated by the success of graphene and diamond, a variety of carbon allotropes have been discovered in recent years in either two-dimensional or three-dimensional configurations. Although these emerging carbon allotropes share some common features, they have certain different and novel mechanical or physical properties. In this review, we present a comparative survey of some of the major properties of fifteen newly discovered carbon allotropes. By comparing their structural topology, we propose a general route for designing most carbon allotropes from two mother structures, namely, graphene and diamond. Furthermore, we discuss several future prospects as well as current challenges in designing new carbon allotropes. | Run-Sen Zhang Jin-Wu Jiang | 2019 | Frontiers of physics2019,14,1: | 0 |
| 3 | 氟化五边形石墨烯的拉伸性能显示文摘用分子动力学方法研究了以碳五元环为结构基元的氟化五边形石墨烯的拉伸性能和变形破坏机制,以及氟化率对其力学参数的影响。结果表明:氟化能改变五边形石墨烯的变形破坏机制。低氟化率的五边形石墨烯在拉伸载荷作用下发生从碳五元环到碳多元环的转变,而完全氟化的五边形石墨烯没有发生明显的碳环转变。随着氟化率的提高五边形石墨烯的杨氏模量、断裂应力和应变呈先减小后增大的趋势。低氟化率(<15%)的五边形石墨烯,其力学性能参数均随氟化率的提高明显降低。完全氟化能提高五边形石墨烯的杨氏模量(约为29.56%),并大幅度降低其断裂应变,而其断裂应力与五边形石墨烯相当。 | 孙艺 韩同伟 操淑敏 骆梦雨 | 2022 | 材料研究学报2022,36,2: | 0 |
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