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Article

Integrated Multifunctional Graphene Discs 2D Plasmonic Optical Tweezers for Manipulating Nanoparticles

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College of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China
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Guangxi Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
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Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China
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Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, Macau University of Science and Technology, Macau 999078, China
5
College of Science & Engineering, Jinan University, Guangzhou 510632, China
*
Author to whom correspondence should be addressed.
Academic Editors: Ki-Hyun Kim and Deepak Kukkar
Nanomaterials 2022, 12(10), 1769; https://doi.org/10.3390/nano12101769
Received: 27 April 2022 / Revised: 13 May 2022 / Accepted: 16 May 2022 / Published: 23 May 2022
(This article belongs to the Topic Advanced Nanomaterials for Sensing Applications)
Optical tweezers are key tools to trap and manipulate nanoparticles in a non-invasive way, and have been widely used in the biological and medical fields. We present an integrated multifunctional 2D plasmonic optical tweezer consisting of an array of graphene discs and the substrate circuit. The substrate circuit allows us to apply a bias voltage to configure the Fermi energy of graphene discs independently. Our work is based on numerical simulation of the finite element method. Numerical results show that the optical force is generated due to the localized surface plasmonic resonance (LSPR) mode of the graphene discs with Fermi Energy Ef = 0.6 eV under incident intensity I = 1 mW/μm2, which has a very low incident intensity compared to other plasmonic tweezers systems. The optical forces on the nanoparticles can be controlled by modulating the position of LSPR excitation. Controlling the position of LSPR excitation by bias voltage gates to configure the Fermi energy of graphene disks, the nanoparticles can be dynamically transported to arbitrary positions in the 2D plane. Our work is integrated and has multiple functions, which can be applied to trap, transport, sort, and fuse nanoparticles independently. It has potential applications in many fields, such as lab-on-a-chip, nano assembly, enhanced Raman sensing, etc. View Full-Text
Keywords: plasmonic optical tweezers; graphene; optical manipulation plasmonic optical tweezers; graphene; optical manipulation
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MDPI and ACS Style

Yang, H.; Mei, Z.; Li, Z.; Liu, H.; Deng, H.; Xiao, G.; Li, J.; Luo, Y.; Yuan, L. Integrated Multifunctional Graphene Discs 2D Plasmonic Optical Tweezers for Manipulating Nanoparticles. Nanomaterials 2022, 12, 1769. https://doi.org/10.3390/nano12101769

AMA Style

Yang H, Mei Z, Li Z, Liu H, Deng H, Xiao G, Li J, Luo Y, Yuan L. Integrated Multifunctional Graphene Discs 2D Plasmonic Optical Tweezers for Manipulating Nanoparticles. Nanomaterials. 2022; 12(10):1769. https://doi.org/10.3390/nano12101769

Chicago/Turabian Style

Yang, Hongyan, Ziyang Mei, Zhenkai Li, Houquan Liu, Hongchang Deng, Gongli Xiao, Jianqing Li, Yunhan Luo, and Libo Yuan. 2022. "Integrated Multifunctional Graphene Discs 2D Plasmonic Optical Tweezers for Manipulating Nanoparticles" Nanomaterials 12, no. 10: 1769. https://doi.org/10.3390/nano12101769

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