Fabrication of surface plasmon waveguides in CYTOP

Asiri, Hamoudi; Khan, Asad; Lisicka-Skrzek, Ewa; Tait, R. Niall; Berini, Pierre

doi:10.1117/12.2001352

Cited by 10 publications

(34 citation statements)

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“…When a thin layer of biosample is present on the surface of the Au waveguides, a shift in the propagation length of LRSPP mode will be caused by changes in the attenuation constant as well as wave velocity. The former can be detected in a straight waveguide by monitoring the output power, and the latter can be detected in an optical interferometer such as MZI by monitoring the shifts in the phase of the output beam [42]. In the biosensing operation, Au waveguides in fluidic channels will be surrounded by dilute aqueous solution containing a target analyte, and will be excited by a LRSPP signal.…”

Section: Figure 211 Adhesion Mechanism For Three Types Of Cytop [Copmentioning

confidence: 99%

“…As the surface of the Au waveguide is binding with the bio-target, the output changes from the original signal. The degree where the bio-chemical solution affects the output depends on its refractive index [42]. The device is featured by the length of waveguides which includes 3.2mm, 3.5mm and 4.8mm.…”

Section: Figure 211 Adhesion Mechanism For Three Types Of Cytop [Copmentioning

confidence: 99%

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Fabrication of Long Range Surface Plasmon Polariton Biosensors Incorporating a Channel Etch Stop Layer and Wafer Bonded Cover

Ren¹

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This thesis presents the micro-fabrication process of a Long Range Surface Plasmon Polariton (LRSPP) biosensor device. The fabrication process was modified in two aspects which include adding a channel etch stop layer to improve the accuracy and uniformity of channels in the device and replacing the photoresist etching mask by an Al etching mask to avoid the thermal cracking. The optical performance of the fabricated chips shows that the biosensor has a 5.03dB/mm attenuation loss and has a 0.10dB response for a monolayer of BSA on Au waveguides. CYTOP bonding process was introduced in the fabrication of the device that incorporates a glass cover. A glass wafer was successfully bonded to a silicon wafer by CYTOP bonding process to seal the channels, which ensured an isolated testing environment for the biochemical fluid.iii

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Section: Figure 211 Adhesion Mechanism For Three Types Of Cytop [Copmentioning

confidence: 99%

Section: Figure 211 Adhesion Mechanism For Three Types Of Cytop [Copmentioning

confidence: 99%

Fabrication of Long Range Surface Plasmon Polariton Biosensors Incorporating a Channel Etch Stop Layer and Wafer Bonded Cover

Ren¹

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“…The scope and synthetic utility of the Gewald reaction have been demonstrated by various examples listed in Tables 1-3. The reaction has applications in several applied fields, such as pharmaceuticals/biomedicine [24,28,29,31, 32,34,35,39,40,42,44,51-53,71,73,74,77,78,80,83-85,88,91-94,96,98-106,113-116,118-123,125-127,129-132,135-138, 141,144,147,149,151,158,161-164,166,179,180,239], agrochemicals [91,101,103,106,108,114,122,292], carbohydrate conjugates [293,294], sugar cane ripeners [295][296][297], peptide analogues [229,230], dyestuffs [61,62,67,86,87,128,152,[155][156][157]175,[282][283][284][285]287,288,290,291,[300][301][302][303], and electronic materials [186,237,238,265,298,…”

Section: Scope and Limitations Scopementioning

confidence: 99%

“…Recently, a series of new blue to deep-blue azo dyes 37, particularly azo dyes from 2-aminothiophenes and julolidine as a coupling component, have been synthesised and patented [128]. These dyes are used to colour polyesters, polyethylene, and other thermoplastic polymers.…”

Section: Hallas and Townsmentioning

confidence: 99%

The Gewald reaction in dye chemistry

Sabnis¹

2016

Coloration Technology

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This review presents the most elegant and promising set of synthetic routes for the synthesis of 2‐aminothiophenes by the Gewald reaction. This reaction has applications in several applied fields, such as pharmaceuticals/biomedicine, agrochemicals, carbohydrate conjugates, sugar cane ripeners, peptide analogues, dyestuffs, and electronic materials; however, the present review will focus on the use of Gewald chemistry in the synthesis of conventional and functional colourants. The Gewald reaction produces 2‐aminothiophene, which is a key intermediate for the diazotisation reaction and for the synthesis of azo dyes, and thus opened the door for new dye chemistry. The reaction produces electron‐withdrawing groups such as CN, COOEt, COOMe, CONH2, and COPh in the 3‐ and/or 5‐position, resulting in bathochromic shifts for the deeper colours of the dyes. The review further reveals the importance of this reaction in the synthesis of azo dyes, fluorescent dyes (coumarin dyes, styryl dyes, thieno[2,3‐d]pyrimidine dyes, bithiophene dyes), thiophene analogues of phthalocyanines, and fluorescent whitening agents.

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“…The microfluidic channels are 80 lm wide and $8 lm deep with a slight over etch on either side of the Au stripes ($400 nm beyond the stripe level) ensuring full exposure of the stripes to the sensing fluid. MZI design 19 and wafer fabrication 20,21 details are given elsewhere.…”

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confidence: 99%

Mach-Zehnder refractometric sensor using long-range surface plasmon waveguides

Khan

Krupin

Lisicka-Skrzek

et al. 2013

Applied Physics Letters

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Articles you may be interested inEfficient end-fire coupling of surface plasmons on flat metal surfaces for improved plasmonic Mach-Zehnder interferometer J. Appl. Phys. 113, 053101 (2013); 10.1063/1.4789809 Refractive index sensor based on hybrid coupler with short-range surface plasmon polariton and dielectric waveguide Appl. Phys. Lett. 100, 111108 (2012); 10.1063/1.3693408Demonstration of long-range surface plasmon-polariton waveguide sensors with asymmetric double-electrode structures Appl.A high sensitivity refractometer based upon a long period grating Mach-Zehnder interferometer Rev.We demonstrate refractometric sensing using long-range surface plasmons on a compact integrated Mach-Zehnder interferometer (MZI) formed from thin Au stripes in Cytop with an etched microfluidic channel defining the sensing arm. The transfer characteristics of MZIs were obtained by sequentially injecting solutions of increasing refractive index in the sensing arm. A detection limit of 9 Â 10 À7 RIU was achieved at k 0 ¼ 1310 nm, limited by unbalanced losses in the sensing and reference arms. A model is proposed for the MZIs, taking into account all loss mechanisms, and may be applied to MZI sensors in other technologies. V C 2013 AIP Publishing LLC.

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Fabrication of surface plasmon waveguides in CYTOP

Cited by 10 publications

References 0 publications

Fabrication of Long Range Surface Plasmon Polariton Biosensors Incorporating a Channel Etch Stop Layer and Wafer Bonded Cover

Fabrication of Long Range Surface Plasmon Polariton Biosensors Incorporating a Channel Etch Stop Layer and Wafer Bonded Cover

The Gewald reaction in dye chemistry

Mach-Zehnder refractometric sensor using long-range surface plasmon waveguides

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