scholarly journals Coordination between Surface Lattice Resonances of Poly(glycidyl Methacrylate) Line Array and Surface Plasmon Resonances of CdS Quantum on Silicon Surface

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 558
Author(s):  
Shuenn-Kung Su ◽  
Feng-Ping Lin ◽  
Chih-Feng Huang ◽  
Chien-Hsing Lu ◽  
Jem-Kun Chen
Keyword(s):  
Quantum Dots ◽  
Hybrid System ◽  
Glycidyl Methacrylate ◽  
Light Emission ◽  
Plasmonic Nanostructures ◽  
Surface Plasmon Resonances ◽  
One Dimensional ◽  
Line Array ◽  
Plasmon Resonances ◽  
Wavelength Light

In this work, a unique hybrid system is proposed for one-dimensional gratings comprising of poly(glycidyl methacrylate) (PGMA) brushes and CdS quantum dots (CQDs). Generally, the emission of QDs is too weak to be observed in a dry state. Plasmonic resonances of the grating structures can be used to enhance the light emission or absorption of CQDs. The interaction between PGMA plasmonic nanostructures and inorganic CQDs plays a crucial role in engineering the light harvest, notably for optoelectronic applications. Extinction measurements of the hybrid system consisting of a PGMA grating and CQDs are reported. We designed one-dimensional gratings with various resolutions to tune the absorptance peaks of grating. PGMA grating grafted from a 1.5 µm resolution of trench arrays of photoresist exhibited absorptance peak at 395 nm, close to the absorption peak of CQDs, resulting in the photoluminescence enhancement of CQDs on the grating due to high charge carriers’ recombination rate. Generally, the emission of quantum dots occurs under irradiation at characteristic wavelengths. Immobilizing QDs on the grating facilitates the emission of QDs under irradiation of full-wavelength light. Furthermore, the PGMA gratings with CQDs were immersed in various solvents to change the geometries resulting the shift of absorptance peak of grating. The proposed method could be applied for sensing the nature of the surrounding media and vice versa, as well as for various media of solvents.

Surface lattice resonance of line array of poly (glycidyl methacrylate) with CdS quantum dots for label-free biosensing

2019 ◽  
Vol 179 ◽  
pp. 199-207
Author(s):  
Feng-Ping Lin ◽  
Hui-Ling Hsu ◽  
Chi-Jung Chang ◽  
Sheng-Chi Lee ◽  
Jem-Kun Chen
Keyword(s):  
Quantum Dots ◽  
Glycidyl Methacrylate ◽  
Label Free ◽  
Cds Quantum Dots ◽  
Surface Lattice ◽  
Line Array

Photonics of Sub-Wavelength Nanowire Superlattices

MRS Advances ◽  
2019 ◽  
Vol 4 (51-52) ◽  
pp. 2759-2769
Author(s):  
Seokhyoung Kim
Keyword(s):  
Light Emission ◽  
Light Trapping ◽  
Photonic Devices ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Precise Control ◽  
Localized Surface Plasmon Resonances ◽  
Long Range Interactions ◽  
Plasmon Resonances ◽  
Sub Wavelength

ABSTRACTSemiconductor nanowires (NWs) have widely been studied as an ideal platform for developing electronic, photovoltaic, photonic devices and biological probes in the nanoscale. The ability to synthesize high-quality NWs of various materials with a precise control in shape, doping and crystal structure is the key to the growth of NW-based technologies. In the past decade, there has been growing interest in controllably creating NW heterojunctions and periodically-modulated superlattices (SLs) because it is expected to bring new functionalities that are not present in uniform NWs. In particular, the interaction of NW SLs with light has been one of the central interests because the diameter and modulation length scale are on the same order as the wavelength of light in the optical regime. Also, degenerately-doped semiconductor NWs exhibit localized surface plasmon resonances (LSPRs), which comprises unexpected long-range interactions when the plasmon resonators are regularly placed in NW SLs. In this review, I will summarize the recent progress in photonics research of NW SLs. The topics discussed include preparation and types of NW SLs, light-trapping and light-emission properties, and plasmonic optical- and thermal-transport properties.

Long-wavelength light emission and lasing from InAs∕GaAs quantum dots covered by a GaAsSb strain-reducing layer

2005 ◽  
Vol 86 (14) ◽  
pp. 143108 ◽  
Author(s):  
H. Y. Liu ◽  
M. J. Steer ◽  
T. J. Badcock ◽  
D. J. Mowbray ◽  
M. S. Skolnick ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emission ◽  
Long Wavelength ◽  
Wavelength Light

scholarly journals Engineered plasmonic Thue-Morse nanostructures for LSPR detection of the pesticide Thiram

Nanophotonics ◽  
2017 ◽  
Vol 6 (5) ◽  
pp. 1083-1092 ◽  
Author(s):  
Massimo Rippa ◽  
Riccardo Castagna ◽  
Marianna Pannico ◽  
Pellegrino Musto ◽  
Volodymyr Tkachenko ◽  
...  
Keyword(s):  
Spectral Characteristics ◽  
Interparticle Distance ◽  
Localized Surface Plasmon ◽  
Plasmonic Nanostructures ◽  
Surface Plasmon Resonances ◽  
Refractive Index Sensitivity ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Phase Sensitive ◽  
Index Sensitivity

AbstractIn this paper, the size- and shape-dependent spectral characteristics of plasmonic nanostructures based on the Thue-Morse (ThMo) sequence are investigated in theory and experiment. We designed, fabricated, and characterized nine different Au nanopillars (NPs) lattices to evaluate their use as nanosensors based on localized surface plasmon resonances (LSPR). The extinction spectra and the bulk refractive index sensitivity (m) are compared to three selected shapes of the NPs (square, circular, and triangular) with different minimum interparticle distance. The maximum m of 275 nm/RIU is obtained for a ThMo pattern with square NPs. Finally, a detection limit of 260 pM (62 pg/ml) of Thiram pesticide has been achieved using an LSPR nanosensor based on an optimized ThMo pattern with triangular NPs employing a phase-sensitive setup to increase the figure-of-merit (FOM) of the sensor.

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