Yuxia Zheng, Tuersun Paerhatijiang, Abulaiti Remilai, Dengpan Ma, Long Cheng. Particle Size and Concentration of Monodisperse Au-Ag Alloy Nanospheres Retrieved by Light Extinction Method[J]. Laser & Optoelectronics Progress, 2022, 59(7): 0729001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 7, 0729001 (2022)
Fig. 1. Schematic of light extinction of particle medium
Fig. 2. Extinction spectra of monodisperse Au-Ag alloy nanospheres with different particle sizes
Fig. 3. Variation curve of resonance wavelength with particle size of monodisperse Au-Ag alloy nanospheres
Fig. 4. Variation curve of absorbance ratio of two different wavelengths with particle size, λ2 ranges fixed at 400 nm. （a） λ1 ranges from 350-450 nm； （b） λ1 ranges from 450-550 nm； （c） λ1 ranges from 550-650 nm
Fig. 5. Variation curve of absorbance ratio of two different wavelengths with particle size, λ2 ranges fixed at 600 nm. （a） λ1 ranges from 350-450 nm； （b） λ1 ranges from 450-550 nm； （c） λ1 ranges from 550-650 nm
Fig. 6. Variation curve and fitted curve of the absorbance ratio with particle size of monodisperse Au-Ag alloy nanospheres at two fixed wavelengths
Fig. 7. Variation curve of the absorbance ratio of resonance wavelength to wavelength λ2 with particle size. (a) λ2 ranges from 350-450 nm; (b) λ2 ranges from 450-550 nm; (c) λ2 ranges from 550-650 nm
Fig. 8. Variation curve and fitted curve of the ratio of absorbance at resonance wavelength to 650 nm wavelength with particle size of monodisperse Au-Ag alloy nanospheres
Fig. 9. Variation curve and fitted curve of resonance wavelengths with minimum particle size of monodisperse Au-Ag alloy nanospheres
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Table 1. Fitted parameters of the dielectric function of Au-Ag alloy
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Table 2. Resonance wavelengths of monodisperse Au-Ag alloy nanospheres with different particle sizes
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Table 3. Particle size range and sensitivity of the three methods
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