摘要
In this Letter, we propose the electronic manipulation of localized surface plasmon resonance for active tuning in near-field nanofocusing.We theoretically studied the excited graphene tuning of the nanofocusing field in fewlayer graphene(FLG)-based hybrid nanotips.It is revealed that the normalized enhanced electric field can be significantly promoted to more than 300 times.It is also observed that resonant peaks can be unprecedently modified by the electron state of excited graphene that is embedded in the substrate.It shows the possibility of flexible tuning of plasmon resonances via controlling the electron excitation state of graphene for specific advanced near-field nanofocusing applications.
In this Letter, we propose the electronic manipulation of localized surface plasmon resonance for active tuning in near-field nanofocusing. We theoretically studied the excited graphene tuning of the nanofocusing field in fewlayer graphene(FLG)-based hybrid nanotips. It is revealed that the normalized enhanced electric field can be significantly promoted to more than 300 times. It is also observed that resonant peaks can be unprecedently modified by the electron state of excited graphene that is embedded in the substrate. It shows the possibility of flexible tuning of plasmon resonances via controlling the electron excitation state of graphene for specific advanced near-field nanofocusing applications.
基金
supported by the National Key Research and Development Program of China(No.2017YFB1104700)
the National Natural Science Foundation of China(Nos.51335008,61775177,and 61475124)
the NSAF(No.U1630111)
the Collaborative Innovation Center of Suzhou Nano Science and Technology
the China Postdoctoral Science Foundation(No.2014M560778)
