1 CIOp (CONICET-CIC), CC 124, 1900 La Plata, Argentina .
Purchase this article from our trusted document delivery partners. Author affiliations. 3. To gain access to this content, please complete the Recommendation The refractive index sensing properties of plasmonic resonances in gold nanoparticles (nanorods and nanobipyramids) are investigated through numerical simulations. transitions and the gap energy were used as fitting parameters and on the other, the 25. As the refractive index near the nanoparticle surface increases, the nanoparticle extinction spectrum shifts to longer wavelengths (known as red-shifting).
M. L. Juan, M. Righini, and R. Quidant, Nature Photon. The bulk refractive index sensitivity of coupled gold and silver nanoparticle dimer structures (nanospeheres and nanocubes, 10–90 nm) were investigated.
For corporate researchers we can also follow up directly with your R&D manager, or the information Export citation and abstract Published 10 February 2006 • IOP Publishing Ltd Nanotechnology, Volume 17, Number 5. Soc. B. K. Saha, S. S. Agasti, C. Kim, X. Li, and V. M. Rotello, Chem. In this section, we perform systematic numerical simulation on the refractive index sensitivity of gold nanoparticles with different shapes and different sizes, it reveals the law of change in the refractive index sensitivity. X. M. Qian and S. M. Nie, Chem. Tables.
Lett. S. Cunsolo, P. Dore, and C. P. Varsamis, Appl. 30. S. A. Tatarkova, W. Sibbett, and K. Dholakia, Phys. J. J. Storhoff, A. D. Lucas, V. Garimella, Y. P. Bao, and U. R. Muller, Nat. Author e-mails. Rev. 18. Gold nanoparticle optical properties also depend on the refractive index near the nanoparticle surface. The tightly focused (∼ 0.5 μm) quasi-Bessel beam with low divergence (NA ∼ 0.04) was used to trap sub-100 nm gold nanoparticles within a long trapping distance of 140 μm. We find that the quadruple resonance in both nanoparticles shows much higher sensing figure of merit (FOM) than its dipolar counterpart, which is attributed mainly to the reduction in resonance linewidth.
Article information. Practically, this means that the nanoparticle extinction peak location will shift to shorter wavelengths (blue-shift) if the particles are transferred from water (n=1.33) to air (n=1.00), or shift to longer wavelengths if the particles are transferred to oil (n=1.5). W. Haiss, N. T. K. Thanh, J. Aveyard, and D. G. Fernig, Anal. Rev. extinction spectra near plasmon resonance are considered. Biotechnol. In the experiment, 60 to 100 nm gold nanoparticles were separated efficiently with at least 18 μm. There is a strong dependence of refractive index sensitivity of gold nanoparticles on the size and shape.
References. To sign up for alerts, please log in first. Chem. A. H. J. Yang, S. D. Moore, B. S. Schmidt, M. Klug, M. Lipson, and D. Erickson, Nature, Y. Yang, A. Q. Liu, L. Lei, L. K. Chin, C. D. Ohl, Q. J. Wang, and H. S. A. Yoon, Lab Chip, S. Xiong, A. Q. Liu, L. K. Chin, and Y. Yang, Lab Chip, S. Mattei, P. Masclet, and P. Herve, Infrared Physics. The extinction spectra of spherical gold nanoparticles suspended in a homogeneous media S. J. Hart, A. Terray, T. A. Leski, J. Arnold, and R. Stroud, Anal.
Chem. Size dependence of refractive index of gold nanoparticles Nanotechnology 17 (2006) 13091315 doi: 10.1088/09574484/17/5/024 263----= -= = = = = L B Scaffardi and J O Tocho. Lucía B Scaffardi 1,2 and Jorge O Tocho 1,3. was used. Lett. Y. Cheng, A. C. Samia, J. D. Meyers, I. Panagopoulos, B. Fei, and C. Burda, J. RIS. T. Imasaka, Y. Kawabata, T. Kaneta, and Y. Ishidzu, Anal. Lett. Size (diameter) and refractive index are crucial to many gold nanoparticle related applications, such as surface-enhanced Raman scattering (SERS). and or Eg = 2.1 eV Using the relation of trapping distance and diameter calculated in Fig. Lett. P. C. Ashok, R. F. Marchington, P. Mthunzi, T. F. Krauss, and K. Dholakia, Optics Express. FAQ: How important are refractive index and absorption for nanoparticles? This option allows users to search by Publication, Volume and Page. Biotechnol. Optical extinction forces on gold nanoparticles can be calculated from the refractive indices obtained by fitting the optical scattering spectra based on Drude model and Rayleigh scattering theory. Chem. This optofluidic chip serves as a promising technology for real-time measurement of physical and optical properties of single nano-objects, which has high potentials in precision medicine, biochemical sensing and physical studies. 20. The optical extinction force of gold nanoparticles in the microchannel can be calculated using Maxwell stress tensor based on the refractive indices calculated in Fig. It has a low refractive index in the visible region but high absorption (k) especially in the near-infrared region. R = 0.7 nm ii AUTHOR'S DECLARATION I hereby declare that I am the sole author of this thesis. nanoparticles with radius smaller than 2 nm. Published 10 February 2006, Lucía B Scaffardi and Jorge O Tocho 2006 Nanotechnology 17 1309, https://doi.org/10.1088/0957-4484/17/5/024. Volume 17, 24. 1 CIOp (CONICET-CIC), CC 124, 1900 La Plata, Argentina . Commun, L. K. Chin, J. Q. Yu, Y. Fu, T. Yu, A. Q. Liu, and K. Q. Luo, Lab Chip. Plata, Bioelectron, 9. We report a real-time method to determine the size, i.e. P. C. Ashok, R. F. Marchington, P. Mthunzi, T. F. Krauss, and K. Dholakia, Optics Express. The diameter and refractive index of gold nanoparticles could be directly obtained by measuring the trapping distance based on the theoretical model. T. Kaneta, Y. Ishidzu, N. Mishima, and T. Imasaka, Anal. Contrast between Number 5, 1 CIOp (CONICET-CIC), CC 124, 1900 La Plata,
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