The influence of dielectric environment on the localized surface plasmon resonance of silver-based composite thin films

Hong, Richang; Shao, Wen; Deng, Cao; Tao, Chunxian; Zhang, Dawei

doi:10.1016/j.optmat.2018.06.019

Cited by 15 publications

(6 citation statements)

References 31 publications

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“…Because of the disturbance caused by peptide shell, the adsorption band of P-SNPs underwent a slight blue-shift (8 nm) compared with that of S-SNPs. The shift of the adsorption band was reasonable since the dielectric environment around the metal surface was changed [36]. Importantly, the results of UV-vis spectroscopy were well consistent with the TEM images that only a single silver nanoparticle was encapsulated in each silica nanoparticle without aggregation.…”

Section: Targeting Mt1-mmp In Mda-mb-231 Cellssupporting

confidence: 78%

Interference-free SERS nanoprobes for labeling and imaging of MT1-MMP in breast cancer cells

Zhu¹,

Li²,

Di³

et al. 2021

Nanotechnology

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The expression of membrane type-1 matrix metalloproteinase (MT1-MMP) in cancer cells is critical for understanding the development, invasion and metastasis of cancers. In this study, we devised an interference-free surface-enhanced Raman scattering (SERS) nanoprobe with high selectivity and specificity for MT1-MMP. The nanoprobe was comprised of silver core-silica shell nanoparticle with a Raman reporter tag (4-mercaptobenzonitrile) embedded in the interface. Moreover, the nitrile group in 4-mercaptobenzonitrile shows a unique characteristic peak in the Raman-silent region (1800-2800 cm-1), which eliminates spectral overlapping or background interference in the Raman fingerprint region (500-1800 cm-1). After surface modification with a targeting peptide, the nanoprobe allowed visualization and evaluation of MT1-MMP in breast cancer cells via SERS spectrometry. This interference-free, peptide functionalized SERS nanoprobe is supposed to be conducive to early diagnosis and invasive assessment of cancer in clinical settings.

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Section: Targeting Mt1-mmp In Mda-mb-231 Cellssupporting

confidence: 78%

Interference-free SERS nanoprobes for labeling and imaging of MT1-MMP in breast cancer cells

Zhu¹,

Li²,

Di³

et al. 2021

Nanotechnology

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“…1 These LSP resonances are related to a collective oscillation of conduction electrons at the particle surface, the frequency of which depends on the size, the shape and the chemical composition of the particles, the inter-particle distance, and the refractive index of the surrounding medium. [2][3][4] LSP excitation results in an enhanced extinction in the far-field, mostly located in the visible and near-infrared spectral range for metals such as gold and silver, and a huge enhancement of the local electromagnetic field at the particle surface. [5][6][7] Therefore, plasmonic nanoparticles are particularly important for their high potential in non linear optics, 8 chemo-sensors 9,10 or substrates for surface-enhanced spectroscopies, such as surface-enhanced Raman scattering (SERS).…”

Section: Introductionmentioning

confidence: 99%

Extending nanoscale patterning with multipolar surface plasmon resonances

et al. 2021

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“…This is because ITO has high transmittance and a positive real part of the permittivity in the visible region (functioning as a dielectric layer). [32,33,36] An FDTD simulation was performed to confirm the electric-field distribution inside the crater with and without the ITO layer in the visible band. The electric field distributions in the Ag layer at 532 nm, in the Ag layer, and ITO/Ag layer at 633 nm are shown in Figure 3d-f.…”

Section: Resultsmentioning

confidence: 99%

“…[ 35 ] Hong et al studied the effect of ITO as a dielectric material by comparing the SPR wavelength and absorption intensity of the ITO/Ag and Ag layers in the visible region. [ 36 ] When the dielectric material was changed from air to ITO, plasmonic coupling occurred between the ITO and Ag layer; thereby, the SPR wavelength redshifted, and the plasmon intensity increased. Many researchers have proved that ITO is metallic in the NIR region and dielectric in the visible region, respectively.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric Energy Harvesting Using Solar Radiation Pressure Enhanced by Surface Plasmons at Visible to Near‐Infrared Wavelengths

et al. 2023

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A light‐pressure electric generator (LPEG) device, which harvests piezoelectric energy using solar radiation enhanced by surface plasmons (SPs), is demonstrated. The design of the device is motivated by the need to drastically increase the power output of existing piezoelectric devices based on SP resonance. The solar radiation pressure can be used as an energy source by employing an indium tin oxide (ITO)/Ag double layer to excite the SPs in the near‐infrared (NIR) and visible light regions. The LPEG with the ITO layer generates an open‐circuit voltage of 295 mV, a short‐circuit current of 3.78 μA, and a power of 532.3 μW cm−2 under a solar simulator. The power of the LPEG device incorporating the ITO layer increased by 38% compared to the device without the ITO layer. The effect of the ITO layer on the electrical output of the LPEG was analyzed in detail by measuring the electrical output when visible and NIR lights are incident on the device using optical bandpass filters. In addition, finite‐difference time‐domain simulation confirmed that the pressure of the incident light can be further amplified by the ITO/Ag double layer. Finally, the energy harvested from the LPEG was stored in capacitors to successfully illuminate red light‐emitting diodes.

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The influence of dielectric environment on the localized surface plasmon resonance of silver-based composite thin films

Cited by 15 publications

References 31 publications

Interference-free SERS nanoprobes for labeling and imaging of MT1-MMP in breast cancer cells

Interference-free SERS nanoprobes for labeling and imaging of MT1-MMP in breast cancer cells

Extending nanoscale patterning with multipolar surface plasmon resonances

Piezoelectric Energy Harvesting Using Solar Radiation Pressure Enhanced by Surface Plasmons at Visible to Near‐Infrared Wavelengths

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