The Optimal Aspect Ratio of Gold Nanorods for Plasmonic Bio-sensing

被引：0
|
作者：
Jan Becker
Andreas Trügler
Arpad Jakab
Ulrich Hohenester
Carsten Sönnichsen
机构：
[1] University of Mainz,Institute of Physical Chemistry
[2] Karl-Franzens University Graz,Institute of Physics
来源：
Plasmonics | 2010年 / 5卷
关键词：
Plasmon; Sensors; Nanorods; BEM; Spectroscopy; Nanoparticles; Nanocrystals; Gold;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The plasmon resonance of metal nanoparticles shifts upon refractive index changes of the surrounding medium through the binding of analytes. The use of this principle allows one to build ultra-small plasmon sensors that can detect analytes (e.g., biomolecules) in volumes down to attoliters. We use simulations based on the boundary element method to determine the sensitivity of gold nanorods of various aspect ratios for plasmonic sensors and find values between 3 and 4 to be optimal. Experiments on single particles confirm these theoretical results. We are able to explain the optimum by showing a corresponding maximum for the quality factor of the plasmon resonance.
引用
收藏
页码：161 / 167
页数：6
相关论文
共 50 条
  • [41] Surface chemistry and aspect ratio mediated cellular uptake of Au nanorods
    Qiu, Yang
    Liu, Ying
    Wang, Liming
    Xu, Ligeng
    Bai, Ru
    Ji, Yinglu
    Wu, Xiaochun
    Zhao, Yuliang
    Li, Yufeng
    Chen, Chunying
    BIOMATERIALS, 2010, 31 (30) : 7606 - 7619
  • [42] Fabrication of Ce-doped ZnO nanorods as efficient materials for photocatalytic, bio-sensing and antibacterial applications
    Shivaraj, Barikara
    Hareeshanaik, S.
    Vishnu, G.
    Prabhakara, M. C.
    Bhojyanaik, H. S.
    MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2025, 314
  • [43] Controlling surface effects in extremely high aspect ratio gold plasmonic electrodes
    Riccardi, Marco
    Santschi, Christian
    Martin, Olivier J. F.
    MICROELECTRONIC ENGINEERING, 2022, 263
  • [44] Reexamination of Surface-Enhanced Raman Scattering from Gold Nanorods as a Function of Aspect Ratio and Shape
    Khlebtsov, Boris N.
    Khanadeev, Vitaly A.
    Burov, Andrey M.
    Le Ru, Eric C.
    Khlebtsov, Nikolai G.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2020, 124 (19) : 10647 - 10658
  • [45] Shape-selective purification of gold nanorods with low aspect ratio using a simple centrifugation method
    Maxime Boksebeld
    Nicholas P. Blanchard
    Ali Jaffal
    Yann Chevolot
    Virginie Monnier
    Gold Bulletin, 2017, 50 : 69 - 76
  • [46] On electrospun PLA nanofibers for bio-sensing applications
    Kumar, Ranvijay
    Singh, Rupinder
    MANUFACTURING LETTERS, 2023, 37 : 7 - 11
  • [47] Optimal aspect ratio and excitation spectral region of individual AuxAg1-x alloy nanobars for plasmonic sensing
    Sun, Fan
    Du, ChaoLing
    Fu, TianYi
    Chen, YangXi
    Sun, Lu
    Zhang, RuXin
    Shi, DaNing
    PHYSICS LETTERS A, 2020, 384 (30)
  • [48] Biodegradable Theranostic Plasmonic Vesicles of Amphiphilic Gold Nanorods
    Song, Jibin
    Pu, Lu
    Zhou, Jiajing
    Duan, Bo
    Duan, Hongwei
    ACS NANO, 2013, 7 (11) : 9947 - 9960
  • [49] Longitudinal Plasmonic Detection of Glucose Using Gold Nanorods
    Peng, Ching-An
    Pachpinde, Sushil
    NANOMATERIALS AND NANOTECHNOLOGY, 2014, 4
  • [50] Identification of the Optimal Spectral Region for Plasmonic and Nanoplasmonic Sensing
    Otte, Marinus A.
    Sepulveda, Borja
    Ni, Weihai
    Perez Juste, Jorge
    Liz-Marzan, Luis M.
    Lechuga, Laura M.
    ACS NANO, 2010, 4 (01) : 349 - 357
12345