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Gold Nano-Island Platforms for Localized Surface Plasmon Resonance Sensing: A Short Review.

Author(s): Badilescu S, Raju D, Bathini S, Packirisamy M

Nano-islands are entities (droplets or other shapes) that are formed by spontaneous dewetting (agglomeration, in the early literature) of thin and very thin metallic (especially gold) films on a substrate, done by post-deposition heating or by using other s...

Article GUID: 33066088
Lab-On-A-Chip for the Development of Pro-/Anti-Angiogenic Nanomedicines to Treat Brain Diseases.

Author(s): Subramaniyan Parimalam S, Badilescu S, Sonenberg N, Bhat R, Packirisamy M

Int J Mol Sci. 2019 Dec 05;20(24): Authors: Subramaniyan Parimalam S, Badilescu S, Sonenberg N, Bhat R, Packirisamy M

Article GUID: 31817343
Nano-Bio Interactions of Extracellular Vesicles with Gold Nanoislands for Early Cancer Diagnosis.

Author(s): Bathini S, Raju D, Badilescu S, Kumar A, Ouellette RJ, Ghosh A, Packirisamy M

Res (Wash D C). 2018;2018:3917986 Authors: Bathini S, Raju D, Badilescu S, Kumar A, Ouellette RJ, Ghosh A, Packirisamy M

Article GUID: 31549028
Tuning of Morphology and Stability of Gold Nanostars Through pH Adjustment.

Author(s): Kumar R, Badilescu S, Packirisamy M

J Nanosci Nanotechnol. 2019 Aug 01;19(8):4617-4622 Authors: Kumar R, Badilescu S, Packirisamy M

Article GUID: 30913757
The effect of hydrogen nanobubbles on the morphology of gold-gelatin bionanocomposite films and their optical properties.

Author(s): Alsawafta M, Badilescu S, Truong VV, Packirisamy M

Nanotechnology. 2012 Feb 17;23(6):065305 Authors: Alsawafta M, Badilescu S, Truong VV, Packirisamy M

Article GUID: 22248640
Title:The effect of hydrogen nanobubbles on the morphology of gold-gelatin bionanocomposite films and their optical properties.
Authors:Alsawafta M,  Badilescu S,  Truong VV,  Packirisamy M
Link:https://www.ncbi.nlm.nih.gov/pubmed/22248640?dopt=Abstract
Category:Nanotechnology
PMID:22248640
Dept Affiliation: PHYSICS
1 Physics Department, Concordia University, Montréal, QC, Canada.

Description:

The effect of hydrogen nanobubbles on the morphology of gold-gelatin bionanocomposite films and their optical properties.

Nanotechnology. 2012 Feb 17;23(6):065305

Authors: Alsawafta M, Badilescu S, Truong VV, Packirisamy M

Abstract

Gold-gelatin bionanocomposite films are prepared by the reduction of gold ions by sodium borohydride in an aqueous solution. It is shown that both the solution and the films on glass substrates contain entrapped hydrogen micro- and nanobubbles with diameters in the range of 200 nm-3 µm. The optical properties of gold nanoparticles in the presence of gelatin and hydrogen nanobubbles are measured and simulated by using the discrete dipole approximation method. The composite films having micro- and nanobubble inclusions have been found to be very stable. The calculated localized surface plasmon resonance band is found in agreement with the experimental band position only when the presence of hydrogen bubbles around the gold nanoparticles is taken into account. The different morphological features engendered by the presence of the bubbles in the film (gelatin receptacles for the nanoparticles, gelatin hemispheres raised by the bubbles under the surface, cavities on the surface of the film, etc) are described in detail and considered for potential applications. This work is highly relevant to the new and exciting topic of nanobubbles on surfaces and interfaces.

PMID: 22248640 [PubMed - indexed for MEDLINE]