Electronic manipulation of near-field nanofocusing in few-layer graphene-based hybrid nanotips

Yanhong Dong; Qing Yang; Guangqing Du; Feng Chen; Noor Uddin; Dayantha Lankanath; Xun Hou

doi:10.3788/COL201917.072501

Journals >Chinese Optics Letters >Volume 17 >Issue 7 >Page 072501 > Article

Chinese Optics Letters
Vol. 17, Issue 7, 072501 (2019)

Electronic manipulation of near-field nanofocusing in few-layer graphene-based hybrid nanotips | Editors' Pick

Yanhong Dong¹, Qing Yang², Guangqing Du^1、*, Feng Chen^1、**, Noor Uddin¹, Dayantha Lankanath¹, and Xun Hou¹

Author Affiliations

¹State Key Laboratory for Manufacturing System Engineering and Key Laboratory of Photonics Technology for Information of Shaanxi Province, School of Electronics & Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China

²School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China

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DOI: 10.3788/COL201917.072501 Cite this Article Set citation alerts

Yanhong Dong, Qing Yang, Guangqing Du, Feng Chen, Noor Uddin, Dayantha Lankanath, Xun Hou. Electronic manipulation of near-field nanofocusing in few-layer graphene-based hybrid nanotips[J]. Chinese Optics Letters, 2019, 17(7): 072501 Copy Citation Text

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Abstract

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 few-layer 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.