Exploration of grating-based surface plasmon resonance systems for wave vector matching to enhance plasmon modes and preliminary surface plasmon-enhanced fluorescence interrogation

Johnson, Michael

doi:10.31274/etd-180810-4602

Cited by 2 publications

(1 citation statement)

References 85 publications

(207 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The metal films on SPR sensor can use silver, gold, and aluminum. Most satisfying metal is made from gold due to excellent surface stability, and resistant to oxidation and contaminants [63]. In addition, the light source can select suitable a function spectrum.…”

Section: Surface Plasmon Resonance (Spr)mentioning

confidence: 99%

High magnification polymeric lens for smartphone microscope

Jaikeandee

View full text Add to dashboard Cite

In this work, we present a facile method for fabrication of plano-convex lenses, using high reflective optical polymer (Polydimethylsiloxane, Sylgard 184�by Dow Corning, n ~1.42 and Norland Optical adhesive 61, NOA61 by Norland Products, ~1.56) under the confined sessile drop technique. The confined sessile drop technique is a facile method and an adjustable lens geometry through controlled the weight of liquid polymer on the lens substrate, as PMMA circular disk and Sylgard�circular disk, with different diameter (2.5-6.0 mm). The liquid polymer was gradually spread and radially over the surface of the lens substrate, and resistance to spreading of liquid by a sharp edge under the gravitational force and interfacial surface tension to form spherical cap with smooth surface. When the use of the weight of liquid polymer increased, the deformation of the lens observed due to affect the gravitational force. The fabricated lenses, as Sylgard 184�plano-convex lens and NOA 61 plano-convex lens, provides the magnification up to 51.0X and 88.3X, respectively. In addition, the imaging quality of the fabricated lenses was characterized using USAF 1951 target. The fabricated plano-convex lenses which could be used to convert a smartphone to a smartphone microscope to taken the small objects that cannot see by naked eye. Due to high refractive index of NOA 61 plano-convex lens, it can be utilized as design of low cost SPR sensors under Kretschmann surface plasmon sensors configuration through deposited with 50 nm-Au film on rough surface as base of NOA 61 plano-convex lenses.

show abstract

Section: Surface Plasmon Resonance (Spr)mentioning

confidence: 99%

High magnification polymeric lens for smartphone microscope

Jaikeandee

View full text Add to dashboard Cite

show abstract

Field-dependent performance parameters of a plasmonic structure: an analysis of penetration depth and propagation length

2022

View full text Add to dashboard Cite

In this paper, the prism-based Kretschmann configuration is used to examine the plasmonic structure in terms of angle of incidence. For p - and s -polarized monochromatic incident light, the field-dependent performance parameters, such as field enhancement, penetration depth (PD), and propagation length (PL) of the considered structure, are investigated. We discovered that field enhancement is highest at resonance angle, but PD and PL are not maximum/minimum at this angle. At the critical angle, PD is at its highest, while PL is at its lowest. At resonance angle, the fields at the metal–sample interface are at their peak. By increasing the angle of incidence beyond the critical angle, PD in the sample decreases, while PL at the metal–sample interface increases. The PD and PL are same for any type of field ℜ ( H z ) , ℜ ( E x ) , ℜ ( E y ) , n o r m H = | H z | , | E x | , | E y | , and n o r m E = | E x | 2 + | E y | 2 . At resonance angles, the PD and PL are ∼ 0.190 µ m and ∼ 3.183 µ m , respectively. From the perspective of field distribution, this thorough analysis is expected to give a new paradigm for analyzing plasmonic structure with respect to angle of incidence.

show abstract

Exploration of grating-based surface plasmon resonance systems for wave vector matching to enhance plasmon modes and preliminary surface plasmon-enhanced fluorescence interrogation

Cited by 2 publications

References 85 publications

High magnification polymeric lens for smartphone microscope

High magnification polymeric lens for smartphone microscope

Field-dependent performance parameters of a plasmonic structure: an analysis of penetration depth and propagation length

Contact Info

Product

Resources

About