Effects of Aspect Ratio Heterogeneity of an Assembly of Gold Nanorod on Localized Surface Plasmon Resonance

Meng

Adv Energy and Sustain Res

et al. 2021

Energy consumption of buildings during heating and cooling accounts for about 15% of global total energy consumption. Advanced dynamic switchable windows that enable independent control of solar heat will contribute to optimal energy efficiency in heating, cooling, and artificial lighting systems throughout buildings. Recently, energy‐efficient plasmonic electrochromic smart windows (PESWs) based on metal oxide nanocrystals (NCs) have been gaining increasing attention due to their effective and controllable regulation over the near‐infrared region of the solar spectrum without affecting the dynamic visible transmittance of the smart windows. Herein, the current state‐of‐the‐art results of colloidal metal oxide NCs for PESWs are highlighted, along with their design strategies and working principles. The recent research status of PESWs in typical colloidal metal oxide NCs is reviewed in detail, and the challenges and corresponding countermeasures in this field are discussed. Furthermore, an outlook into novel opportunities in PESW‐related academic research and how to accelerate the pace of real‐world applications is presented.

Section: Overview Of Plasmonic Metal Oxide Ncsmentioning

confidence: 99%

Advances in Energy‐Efficient Plasmonic Electrochromic Smart Windows Based on Metal Oxide Nanocrystals

Meng

Adv Energy and Sustain Res

et al. 2021

“…The SEM image of the SiO 2 layer that has not only dye molecules but also AgNPs embedded in it shows distribution of a clustered pattern of AgNPs, as shown in Figure S2b. The fact that the inter-particle distance that varies in a certain range may affect the LSPR extinction spectrum into a broader one due to dipole-dipole interaction [40]. Using a spectrometer (USB-2000, Ocean Optics, Orlando, FL, USA), we measured the emission spectrum of the rhodamine 110 embedded in the SiO 2 layer under illumination of dye excitation light of a LED centered at 470 nm wavelength (M470L3, Thorlabs, Newton, MA, USA).…”

Section: Experimental Section 21 Fabrication Of the Plasmonic Chip Fo...mentioning

confidence: 99%

Fluorescence Enhancement via Dual Coupling of Dye Molecules with Silver Nanostructures

Tran

2021

Chemosensors

Self Cite

We demonstrate the enhancement of fluorescence emitted from dye molecules coupled with two surface plasmons, i.e., silver nanoparticles (AgNPs)-induced localized surface plasmons (LSP) and thin silver (Ag) film supported surface plasmons. Excitation light is illuminated to a SiO2 layer that contains both rhodamine 110 molecules and AgNPs. AgNPs enhances excitation rates of dye molecules in their close proximity due to LSP-induced enhancement of local electromagnetic fields at dye excitation wavelengths. Moreover, the SiO2 layer on one surface of which a 50 nm-thick Ag film is coated for metal cladding (air on the other surface), acts as a waveguide core at the dye emission wavelengths. The Ag film induces the surface plasmons which couple with the waveguide modes, resulting in a waveguide-modulated version of surface plasmon coupled emission (SPCE) for different SiO2 thicknesses in a reverse Kretschmann configuration. We find that varying the SiO2 thickness modulates the fluorescent signal of SPCE, its modulation behavior being in agreement with the theoretical simulation of thickness dependent properties of the coupled plasmon waveguide resonance. This enables optimization engineering of the waveguide structure for enhancement of fluorescent signals. The combination of LSP enhanced dye excitation and the waveguide-modulated version of SPCE may offer chances of enhancing fluorescent signals for a highly sensitive fluorescent assay of biomedical and chemical substances.

“…The oscillating plasmons would re-radiate optical energy of light in the form of elastic scattering with its cross section much larger than the physical cross section of a nanoparticle [ 88 ]. In addition, Ohmic loss occurs due to electron-electron scattering into heat.…”

Section: Localized Surface Plasmon Resonance For Detecting Crpmentioning

confidence: 99%

Plasmonic Optical Biosensors for Detecting C-Reactive Protein: A Review

Seok

2020

Micromachines

Self Cite

C-reactive protein (CRP), a potent acute-phase reactant that increases rapidly in response to inflammation, tissue damage or infections, is also considered an indicator of the risk of cardiovascular diseases and neurological disorders. Recent advances in nanofabrication and nanophotonic technologies have prompted the optical plasmonic phenomena to be tailored for specific detection of human serum CRP into label-free devices. We review the CRP-specific detection platforms with high sensitivity, which feature the thin metal films for surface plasmon resonance, nano-enhancers of zero dimensional nanostructures, and metal nanoparticles for localized surface plasmon resonance. The protocols used for various types of assay reported in literature are also outlines with surface chemical pretreatment required for specific detection of CRPs on a plasmonic surface. Properties including sensitivity and detection range are described for each sensor device reviewed, while challenges faced by plasmonic CRP sensors are discussed in the conclusion, with future directions towards which research efforts need to be made.