Large unsaturated room temperature negative magnetoresistance in graphene foam composite for wearable and flexible magnetoelectronics
文献类型：期刊论文
| 作者 | Alberto García-Peñas; Florian J. Stadler1; Min Zhang; Rizwan Ur Rehman Sagar; Massimiliano Galluzzi; Masroor Ahmad Bhat |
| 刊名 | Nano Research
 |
| 出版日期 | 2019 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Room temperature positive magnetoresistance (PMR) in graphene is a conventional phenomenon but we observed large negative magnetoresistance (NMR) in GF/polydimethylsiloxane (GF/PDMS) at room temperature for the first time. The largest NMR ~ 35% was detected at 250 K, while PMR is observed below 200 K. Furthermore, PMR at all temperatures is observed in regular GF specimens, hence, NMR is the result of the infiltration with the electrically insulating polymer. Forward interference and wavefunction shrinkage model has been employed to understand the transport mechanism in GF/PDMS. A critical temperature ~ 224 K for switching between NMR and PMR is observed at the crystallization temperature of PDMS, suggesting a change in polymer chain conformation may be a major reason leading to NMR in GF/PDMS specimens thus role of mechanical properties of PDMS in NMR cannot be ignored and observed locally via specially resolved atomic force microscopy. In addition, storage modulus and heat flow study shows similar transition temperature (~ 200 K) of NMR to PMR and provide an evidence of mechanical stable specimens. As is known, large, tunable, and unsaturated NMR at room temperature is very useful for future facile practical shapeable magnetoelectronic devices. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/14410]  |
| 专题 | 深圳先进技术研究院_医工所 |
| 推荐引用方式 GB/T 7714 | Alberto García-Peñas,Florian J. Stadler1,Min Zhang,et al. Large unsaturated room temperature negative magnetoresistance in graphene foam composite for wearable and flexible magnetoelectronics[J]. Nano Research,2019. |
| APA | Alberto García-Peñas,Florian J. Stadler1,Min Zhang,Rizwan Ur Rehman Sagar,Massimiliano Galluzzi,&Masroor Ahmad Bhat.(2019).Large unsaturated room temperature negative magnetoresistance in graphene foam composite for wearable and flexible magnetoelectronics.Nano Research. |
| MLA | Alberto García-Peñas,et al."Large unsaturated room temperature negative magnetoresistance in graphene foam composite for wearable and flexible magnetoelectronics".Nano Research (2019). |
入库方式： OAI收割
来源：深圳先进技术研究院
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