scholarly journals Plasmonic Photomobile Polymer Films

Crystals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 660
Author(s):  
Riccardo Castagna ◽  
Massimo Rippa ◽  
Francesco Simoni ◽  
Fulvia Villani ◽  
Giuseppe Nenna ◽  
...  
Keyword(s):  
Polymer Films ◽  
Localized Surface Plasmon Resonance ◽  
Dark Field ◽  
Localized Surface Plasmon ◽  
Force Microscopy ◽  
Atomic Force ◽  
Plasmonic Nanostructure ◽  
Dark Field Microscopy ◽  
Scanning Electron

In this work, we introduce the approaches currently followed to realize photomobile polymer films and remark on the main features of the system based on a biphasic structure recently proposed. We describe a method of making a plasmonic nanostructure on the surface of photomobile films. The characterization of the photomobile film is performed by means of Dark Field Microscopy (DFM), Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM). Preliminary observations of the light-induced effects on the Localized Surface Plasmon Resonance are also reported.

scholarly journals Chemosensing on Miniaturized Plasmonic Substrates

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 275
Author(s):  
Pengcheng Wang ◽  
Rodica Elena Ionescu
Keyword(s):  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Localized Surface Plasmon Resonance ◽  
Thin Layers ◽  
Localized Surface Plasmon ◽  
Force Microscopy ◽  
Atomic Force ◽  
Model Molecule ◽  
First Time ◽  
Scanning Electron

Round, small-sized coverslips were coated for the first time with thin layers of indium tin oxide (ITO, 10–40 nm)/gold (Au, 2–8 nm) and annealed at 550 °C for several hours. The resulting nanostructures on miniaturized substrates were further optimized for the localized surface plasmon resonance (LSPR) chemosensing of a model molecule—1,2-bis-(4-ppyridyl)-ethene (BPE)—with a detection limit of 10−12 M BPE in an aqueous solution. All the fabrication steps of plasmonic-annealed platforms were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM).

Characterization of Multiple Functional Solid Line of Graphite Ink Surface Printed by Micro-Flexographic

2015 ◽  
Vol 752-753 ◽  
pp. 1379-1383
Author(s):  
M.I. Maksud ◽  
Mohd Sallehuddin Yusof ◽  
Zaidi Embong
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
Printing Plate ◽  
X Ray ◽  
Force Microscopy ◽  
Atomic Force ◽  
Flexographic Printing ◽  
Scanning Electron

The purpose of this paper is to study a ink surface morphology, quantify the chemical composition involved in processing of graphite ink printed by flexographic printing. The methodology is to use surface sensitive technique, X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM). As a finding we successfully achieved 25 micron lines array using PDMS printing plate. The Originality and value of this work is surface sensitive techniques like XPS, AFM and FESEM were exclusively used in order to characterize graphite inks printed by flexographic method, using PDMS printing plate.

scholarly journals Characterization of thin films containing zirconium, oxygen, and sulfur by scanning electron and atomic force microscopy

1999 ◽  
Vol 14 (9) ◽  
pp. 3725-3733 ◽  
Author(s):  
A. Fischer ◽  
F. C. Jentoft ◽  
G. Weinberg ◽  
R. Schlögl ◽  
T. P. Niesen ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Sulfonic Acid ◽  
Homogeneous Nucleation ◽  
Chemical Deposition ◽  
Self Assembled Monolayers ◽  
Force Microscopy ◽  
Atomic Force ◽  
Assembled Monolayers ◽  
Scanning Electron

Oxidic zirconium films prepared by chemical deposition from aqueous medium on sulfonic acid terminated self-assembled monolayers attached to an oxidized silicon surface were investigated with scanning electron microscopy and atomic force microscopy. Bulk precipitate forms in the 4 mM Zr(SO4)2 · 4H2O, 0.4 N HCl deposition medium at 343 K after approximately 30 min. Precipitate particles (200 nm and larger) were found embedded in the oxidic zirconium film and adsorbed on top of the film; they could be washed off, but patches of the film were removed. Working with unstable deposition solutions, in which homogeneous nucleation occurs, leads to preparation-inherent flaws in the film.

scholarly journals Injectable nanosilica–chitosan microparticles for bone regeneration applications

2017 ◽  
Vol 32 (6) ◽  
pp. 813-825 ◽  
Author(s):  
Bipin Gaihre ◽  
Beata Lecka-Czernik ◽  
Ambalangodage C Jayasuriya
Keyword(s):  
Alkaline Phosphatase ◽  
Bone Regeneration ◽  
Spherical Shape ◽  
Morphological Characterization ◽  
Force Microscopy ◽  
Injectable Scaffolds ◽  
Atomic Force ◽  
Silica Nanopowder ◽  
Scanning Electron

This study was aimed at assessing the effects of silica nanopowder incorporation into chitosan-tripolyphosphate microparticles with the ultimate goal of improving their osteogenic properties. The microparticles were prepared by simple coacervation technique and silica nanopowder was added at 0% (C), 2.5% (S1), 5% (S2) and 10% (S3) (w/w) to chitosan. We observed that this simple incorporation of silica nanopowder improved the growth and proliferation of osteoblasts along the surface of the microparticles. In addition, the composite microparticles also showed the increased expression of alkaline phosphatase and osteoblast specific genes. We observed a significant increase ( p < 0.05) in the expression of alkaline phosphatase by the cells growing on all sample groups compared to the control (C) groups at day 14. The morphological characterization of these microparticles through scanning electron microscopy showed that these microparticles were well suited to be used as the injectable scaffolds with perfectly spherical shape and size. The incorporation of silica nanopowder altered the nano-roughness of the microparticles as observed through atomic force microscopy scans with roughness values going down from C to S3. The results in this study, taken together, show the potential of chitosan-tripolyphosphate-silica nanopowder microparticles for improved bone regeneration applications.

Fabrication and Applications of Ordered Au Nanodisk and Nanohole Arrays

2010 ◽  
Author(s):  
Tieyu Gao ◽  
Yue Bing Zheng ◽  
Bala Krishna Juluri ◽  
Tony Jun Huang
Keyword(s):  
Localized Surface Plasmon Resonance ◽  
Low Cost ◽  
Nano Particles ◽  
Localized Surface Plasmon ◽  
Microfluidic Channels ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Atomic Force ◽  
Nanohole Arrays ◽  
Nanofabrication Technique

We have fabricate ordered Au nanodisk and nanohole arrays on glass substrates using nanosphere lithography (NSL) combined with reactive ion etching (RIE) techniques. The morphology and size distribution of the Au nanodisks and nanoholes were examined with scanning electron microscopy (SEM) and atomic force microscopy (AFM). The sensitivity of the localized surface plasmon resonance (LSPR) of the Au nanodisk arrays to change in the surroundings’ refractive index was evaluated by integrating the Au nanodisk arrays into microfluidic channels. In addition, we show that the NSL-fabricated Au nanohole arrays can be applied as templates for patterning micro-/nano-particles under capillary force. The unique structural and optical characteristics of the Au nanodisk and nanohole arrays, as well as the low-cost and high-throughput of NSL-based nanofabrication technique, render these arrays excellent platforms for numerous engineering applications.

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