One-dimensional silver nanostructures on single-wall carbon nanotubes

Mercado, Eunice; Santiago, S.; Báez, Luís; Rivera, Daniel; González, Miguel A.; Rivera-Ramos, Milton E.; Leon, Madeline; Castro, Miguel E.

doi:10.1186/1556-276x-6-602

Cited by 4 publications

(4 citation statements)

References 22 publications

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“…Another way to investigate the localized surface-plasmon resonance of nanowire is considering such material as an ellipsoidal nanoparticle or a spherical prolate spheroid [12,13]. In this case, a semi-major axis (a) is much longer than a semi-minor axis (b and c), here (a > b = c).…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Optical Properties of Silver Nanowires Conjugated with Protein

Nga

Huy

2021

Comm. in Phys.

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Optical properties of protein-conjugated metallic nanowires are theoretically investigated based on the Mie theory and the core-shell model. Our numerical calculations show that optical spectra of protein-conjugated nanowires can have more a maximum compared to these nanowires without biomolecules. This finding is in a good agreement with previous experiments. We provide better interpretation for the origin of optical peaks in absorption spectrum of nanowires. Our results can be used for designing biosensors and bio-detectors.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

Optical Properties of Silver Nanowires Conjugated with Protein

Nga

Huy

2021

Comm. in Phys.

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“…UV-visible absorption spectroscopy measurements on dry deposits of the nanofibers formed on the surface of the blood vessels were performed with an Ocean Optics 2000 spectrometer coupled to an Olympus microscope operated in the reflection mode and UV grade optics. The Mie model of spheres and wires was used for simulation of the optical absorption spectrum [36]. The simulations were performed in a Dell PC using Igor software.…”

Section: Uv-visiblementioning

confidence: 99%

“…Simulations of the absorption spectrum of wires and particles provided insight about the electronic excitations that contribute to the absorption spectrum of the nanofibers. The inserts (b) and (c) in Figure 4 illustrate computer simulations using Mie theory of the light absorption of particles and wires, respectively [36]. The simulation assumes wires with a length and diameter of 1 m and 50 nm, respectively.…”

Section: Optical Absorption Spectroscopy Measurementsmentioning

confidence: 99%

The Effect of Silver Nanofibers on the Deformation Properties of Blood Vessels: Towards the Development of New Nanotechnologies to Prevent Rupture of Aneurysms

González

Rivera

Marcelino

et al. 2014

Journal of Nanomaterials

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An aneurysm is the result of a widening or ballooning of a portion of a blood vessel. The rupture of an aneurysm occurs when the mechanical stress acting on the inner wall exceeds the failure strength of the blood vessel. We propose an innovative approach to prevent the rupture of an aneurysm based on the use of nanotechnology to improve the strength of the blood vessel. We present results on the effect of silver nanofibers on the resistance toward deformation of blood vessels. The silver nanofibers are grown on the surface of the blood vessels. The nanofibers are120±30 nm in diameter and2.7±0.8 μm in length. The deformation per applied force of blood vessels was found to decrease from 0.15 m/N in control blood vessels to 0.003 m/N in blood vessels treated with the nanofibers. This represents an increase in the resistance towards deformation of a factor of 50. The increase in the resistance towards deformation is clinically significant since blood pressure increases by factors slightly larger than one in the human body. Treatment of blood vessels with silver nanofibers is a potential translational clinical tool for preventing rupture of aneurysms in a clinical setting.

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“…Khanh and Yoon used topologyassisted self-organisation of nanoparticles where photopatterned silicon wafers were used as substrates for organisation of nanoparticles in one dimension [11]. Mercado et al used multiwall carbon nanotubes to guide the onedimensional arrangement of silver nanostructures [12]. However, all these techniques are expensive and time consuming since they involve many steps.…”

Section: Introductionmentioning

confidence: 99%

A Simple Method for Patterning Nanoparticles on Planar Surfaces

Tizazu

2019

Journal of Nanotechnology

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This paper describes a simple method to pattern nanoparticles on planar surfaces using the antifouling property of poly(ethylene glycol) monolayers deposited from a solution on the native oxide of titanium. Atomic force microcopy was used to pattern the poly(ethylene glycol) monolayers producing protein active sites on the protein-resistant surface. Patterns with different sizes have been generated by shaving the monolayers with different repetitions. Friction force microscopy was used to image the patterns. The smallest patterns are 50 nm and the largest patterns are 500 nm at full width half maximum. The smallest pattern was produced with one shave, whereas the largest pattern was produced by shaving the monolayers 112 times. Protein-coated nanoparticles were immobilised on the shaved (protein active) part of the monolayers by dipping the patterned samples into a solution that contains 2% by volume protein-functionalized nanoparticles with a nominal diameter of 40 nm. Atomic force microscopy was used to take a topographic image of the samples. The topographic image showed that the protein-functionalized nanoparticles were attached onto the shaved part of the substrate but not on the poly(ethylene glycol)-covered part of the substrate. The level of aggregation of the nanoparticles was also investigated from the topographic image. The section analysis of the topographic image of the nanoparticle patterns showed a height of 40 nm which proved that only a monolayer of particles were deposited on the shaved part of the monolayer.

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One-dimensional silver nanostructures on single-wall carbon nanotubes

Cited by 4 publications

References 22 publications

Optical Properties of Silver Nanowires Conjugated with Protein

Optical Properties of Silver Nanowires Conjugated with Protein

The Effect of Silver Nanofibers on the Deformation Properties of Blood Vessels: Towards the Development of New Nanotechnologies to Prevent Rupture of Aneurysms

A Simple Method for Patterning Nanoparticles on Planar Surfaces

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