Adjustable color response during plasmon resonance by monochromatic light irradiation

2021 ◽  
Author(s):  
Xin Li ◽  
Shencheng Fu ◽  
Jingying Miao ◽  
Mingyue Zhang ◽  
Xintong Zhang
Keyword(s):  
Plasmon Resonance ◽  
Monochromatic Light ◽  
Light Irradiation ◽  
Color Response

Trends in the development of sensor devices based on surface plasmon resonance (Review)

2021 ◽  
Vol 56 ◽  
pp. 5-26
Author(s):  
A. V. Samoylov ◽  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmons ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Light Wave ◽  
Monochromatic Light ◽  
Dielectric Substrate ◽  
Spr Imaging ◽  
Imaging Sensors ◽  
Polarization Contrast

Trends in the development of modern sensory devices based on surface plasmon resonance (SPR) are considered. The basic principles of construction of SPR sensor are given. For excitation of surface plasmons on the surface of sensitive elements of biosensory, a prism of total internal reflection is used or a dielectric substrate are used. A thin (dozens nm) film of high-conductive metal (mainly gold or silver) is applied to the working surface of the prisms or dielectric substrate. In a typical observation experiment, SPR is measured dependence on the angle of increasing light intensity, reflected by the resonance sensitive surface of the prism (chip). The optical schemes and principles of work of various SPR sensors are considered: - SPR Sensors with angular modulation, which are the most commonly used method based on the corner registration, in which the SPR occurs. The surface of the metal film is irradiated by monochromatic light and scans on a certain range of angles. There is a kind of SPR sensors with angular modulation, in which there is no mechanical scan of the angle of fall. Such sensors are entirely necessary for excitation of PPRs a set of angles is obtained due to a divergent or convergent light beam. - PPR sensors with a wavelength modulation is based on fixing an angle of falling light at a certain value and modulation of the wavelength of the incident light. Excitation of surface plasmons leads to a characteristic failure in the spectrum of reflected radiation. - Phase sensitive SPR sensors in which a change in the phase of the light wave associated with the surface plasma is measured on one corner of the fall and the wavelength of the light wave and is used as the output signal. - SPR imaging sensors in which the Technology of SPR imaging (SPRi) combines the sensitivity of the SPR with spatial image capabilities. The SPRI circuit uses as a fixed angle (as a rule, a slightly left angle of the SPR) and a fixed wavelength to measure changes in the reflection ability (Δ% R) that occur when the curve of the SPR is shifted due to the change in the refractive index above the surface of the sensor element. - SPR imaging sensors polarization contrast. In order to improve the quality of high-performance SPR imaging sensors in terms of sensitivity and resolution, the method of polarization contrast is used Disadvantages and advantages of SPR sensors are constructed with different principles are considered. The design and prospect of the use of achromatic and suburchast wave plates in the PPR imaging sensors with polarization contrast are considered.

Plasmonic resonance enhanced photoelectrochemical aptasensors based on g-C3N4/Bi2MoO6

2018 ◽  
Vol 54 (52) ◽  
pp. 7199-7202 ◽  
Author(s):  
Zhenli Qiu ◽  
Jian Shu ◽  
Dianping Tang
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Visible Light Irradiation ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Light Irradiation ◽  
Localized Surface Plasmon ◽  
Plasmonic Resonance

An in-depth exploration associated with localized surface plasmon resonance between g-C3N4/Bi2MoO6 and gold nanoparticles has been conducted for highly efficient photoelectrochemical aptasensors under ultraviolet and visible light irradiation.

Plasmon-Induced Photodegradation of Toxic Pollutants with Ag/AgI/Bi2WO6 under Visible-Light Irradiation

2013 ◽  
Vol 807-809 ◽  
pp. 1534-1542 ◽  
Author(s):  
Ming Sheng Gui ◽  
Peng Fei Wang ◽  
Miao Miao Tang ◽  
Dong Yuan
Keyword(s):  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Visible Light Irradiation ◽  
Plasmon Resonance ◽  
Photogenerated Electron ◽  
Light Irradiation ◽  
Ag Nps ◽  
Electron Hole ◽  
Band Position

The Ag/AgI/Bi2WO6photocatalysts were successfully synthesized by deposition-precipitation and photoreduction methods. The catalyst showed high and stable photocatalytic activity for the degradation of the RhB under visible light irradiation (λ>400 nm). On the basis of a new plasmonic photocatalytic mechanism, the photogenerated electron-hole pairs are formed in Ag nanoparticles (NPs) due to surface plasmon resonance under visible-light irradiation. Then, the photoexcited electrons at the Ag NPs are injected into AgI. On the other hand, the band position shows that AgI and Bi2WO6have the matching band potentials in the AgI/Bi2WO6heterostructure composites. So the photoexcited electrons is ultimately transfer to the Bi2WO6conduction band (CB), photo-induced holes (hVB+) is transfer to the AgI valence band (VB) and the simultaneous transfer to compensative electrons from I-to the Ag NPS. This the result indicates that the high photosensitivity of noble metal Ag NPs due to surface plasmon resonance, which is not only improve the photocatalytic performance, but also offer a new idea for preparation of new photocatalysts .

Photoisomerization behavior and photoinduced surface relief gratings on azopolymer film by a monochromatic light irradiation

2006 ◽  
Vol 29 (4) ◽  
pp. 365-370 ◽  
Author(s):  
Md. Zahangir Alam ◽  
Tomoko Ohmachi ◽  
Tomonari Ogata ◽  
Takamasa Nonaka ◽  
Seiji Kurihara
Keyword(s):  
Surface Relief ◽  
Monochromatic Light ◽  
Light Irradiation ◽  
Surface Relief Gratings

Intrinsic Fiber-Optic Immunosensors Based on Monochromatic Light Excitation of Surface Plasmon Resonance

2000 ◽  
Vol 39 (Part 2, No. 9A/B) ◽  
pp. L936-L938 ◽  
Author(s):  
Wen Bin Lin ◽  
Jean Marc Chovelon ◽  
Monique Lacroix ◽  
Nicole Jaffrezic-Renault
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Fiber Optic ◽  
Monochromatic Light ◽  
Light Excitation

Gold nanoparticle-modified TiO2/SBA-15 nanocomposites as active plasmonic photocatalysts for the selective oxidation of aromatic alcohols

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70352-70363 ◽  
Author(s):  
Yu Chen ◽  
Weizun Li ◽  
Jingyu Wang ◽  
Qian Yang ◽  
Qidong Hou ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Mesoporous Silica ◽  
Gold Nanoparticle ◽  
Selective Oxidation ◽  
Noble Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Catalytic Performance ◽  
Light Irradiation ◽  
Aromatic Alcohols

The catalytic performance of noble-metal on mesoporous silica hosts has been widely investigated because the effects of surface plasmon resonance can open new avenues for the improvement of catalytic performance under light irradiation.

Study on the photo-transfer thermoluminescence in Eu doped potassium chloride

2013 ◽  
Vol 1526 ◽  
Author(s):  
Hector Duran-Munoz ◽  
Raul Perez-Salas ◽  
Thomas Piters
Keyword(s):  
Potassium Chloride ◽  
Transfer Process ◽  
Monochromatic Light ◽  
Glow Peak ◽  
Light Irradiation ◽  
Optical Stimulation ◽  
Transfer Processes

ABSTRACTIn this work a survey of possible optical stimulation processes in irradiated KCl:Eu with a focusing on photo-transfer thermoluminescence (PTTL) effects are shown. For different wavelengths in the range from 180 to 800 nm a cycle of measurements was performed, each comprising of a TL measurement after light irradiation, a TL measurement after beta irradiation for reference purposes and a PTTL measurement. The latter was obtained by applying first a beta irradiation, then a partial readout up to a certain end temperature followed by a monochromatic light irradiation of a specific wavelength and finally a TL measurement. This procedure was repeated for different partial readout end temperatures. From the results the existence of at least four different photo-transfer processes, induced by 310, 245 and 550 nm light are deduced. The photo transfer process induced by an approximate value of 245 nm produced a TL glow peak not seen before in beta or light induced TL. Furthermore it was observed that some of the TL peaks created by light of 240 and 260 nm were strongly sensitized after a beta irradiation and a partial readout.

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