MODELING OF CELLULAR DETONATIONS IN ALUMINUM SUBMICRON AND NANOPARTICLE SUSPENSIONS

2019 ◽  
Author(s):  
T.A. KHMEL ◽  
◽  
A.V. FEDOROV ◽  
Keyword(s):  
Nanoparticle Suspensions ◽  
Cellular Detonations

Interference of Gold Nanoparticles with In vitro Endotoxin Detection Assays

2020 ◽  
Vol 16 (2) ◽  
pp. 204-213 ◽  
Author(s):  
Melissa A. Vetten ◽  
Mary Gulumian
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Surface Reactivity ◽  
In Vitro Assays ◽  
Limulus Amebocyte Lysate ◽  
Chromogenic Assay ◽  
Nanoparticle Suspensions ◽  
Endotoxin Contamination ◽  
Factor C

Background: Endotoxin-free engineered nanoparticle suspensions are imperative for their successful applications in the field of nanomedicine as well as in the investigations in their toxicity. Gold nanoparticles are known to interfere with various in vitro assays due to their optical properties and potential for surface reactivity. In vitro endotoxin testing assays are known to be susceptible to interference caused by the sample being tested. Objective: This study aimed to identify a preferred assay for the testing of endotoxin contamination in gold nanoparticle suspensions. Methods: The interference by gold nanoparticles on three assays namely, the commonly used limulus amebocyte lysate chromogenic assay, the limulus amebocyte lysate gel-clot method, and the less common recombinant Factor C (rFC) assay, was tested. Results: Possible interference could be observed with all three assays. The interference with the absorbance- based chromogenic assay could not be overcome by dilution; whilst the qualitative nature of the gel-clot assay excluded the possibility of distinguishing between a false positive result due to enhancement of the sensitivity of the assay, and genuine endotoxin contamination. However, interference with the rFC assay was easily overcome through dilution. Conclusion: The rFC assay is recommended as an option for endotoxin contamination detection in gold nanoparticle suspensions.

scholarly journals Untangling superposed double layer and structural forces across confined nanoparticle suspensions

2021 ◽  
Author(s):  
Michael Ludwig ◽  
Regine von Klitzing
Keyword(s):  
Double Layer ◽  
Interaction Force ◽  
Charged Surfaces ◽  
Structural Forces ◽  
Nanoparticle Suspensions ◽  
Confined Suspensions ◽  
Force Profiles

Complete interaction force profiles of charged surfaces across confined suspensions were successfully described using a superposition of double layer and structural forces.

scholarly journals Light Confinement with Structured Beams in Gold Nanoparticle Suspensions

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 221
Author(s):  
Argelia Balbuena Balbuena Ortega ◽  
Felix E. Torres-González ◽  
Valentin López López Gayou ◽  
Raul Delgado Delgado Macuil ◽  
Gaetano Assanto ◽  
...  
Keyword(s):  
Colloidal Suspension ◽  
Laser Wavelength ◽  
Gaussian Beams ◽  
Optical Vortices ◽  
Complex Structures ◽  
Plasmonic Resonance ◽  
Dark Solitons ◽  
Experimental Campaign ◽  
Nanoparticle Suspensions ◽  
Light Beams

We carry out an experimental campaign to investigate the nonlinear self-defocusing propagation of singular light beams with various complex structures of phase and intensity in a colloidal suspension of gold nanoparticles with a plasmonic resonance near the laser wavelength (532nm). Studying optical vortices embedded in Gaussian beams, Bessel vortices and Bessel-cosine (necklace) beams, we gather evidence that while intense vortices turn into two-dimensional dark solitons, all structured wavepackets are able to guide a weak Gaussian probe of different wavelength (632.8 nm) along the dark core. The probe confinement also depends on the topological charge of the singular pump.

Storage Wars: how citrate-capped silver nanoparticle suspensions are affected by not-so-trivial decisions

2014 ◽  
Vol 16 (4) ◽  
Author(s):  
Justin M. Gorham ◽  
Anne B. Rohlfing ◽  
Katrice A. Lippa ◽  
Robert I. MacCuspie ◽  
Amy Hemmati ◽  
...  
Keyword(s):  
Silver Nanoparticle ◽  
Nanoparticle Suspensions

Development and assessment of nanoparticle suspensions as fundament for toxicological analysis

2009 ◽  
Vol 189 ◽  
pp. S185
Author(s):  
Tobias Meißner ◽  
Annegret Potthoff ◽  
Volkmar Richter
Keyword(s):  
Toxicological Analysis ◽  
Nanoparticle Suspensions

scholarly journals Effects of the silica nanoparticles (NPSiO2) on the stabilization and transport of hazardous nanoparticle suspensions into landfill soil columns

2017 ◽  
Vol 70 (3) ◽  
pp. 317-323 ◽  
Author(s):  
Elizabeth Mendes de Oliveira ◽  
Edwin Elard Garcia-Rojas ◽  
Izabella Christynne Ribeiro Pinto Valadão ◽  
Adriana de Souza Forster Araújo ◽  
José Adilson de Castro
Keyword(s):  
Silica Nanoparticles ◽  
Soil Columns ◽  
Nanoparticle Suspensions

Photoinduced variation of the luminescent properties of PbS nanoparticle suspensions stabilized by polyvinylpyrrolidone

2015 ◽  
Vol 41 (1) ◽  
pp. 65-68 ◽  
Author(s):  
I. A. Bagrov ◽  
V. V. Danilov ◽  
S. K. Evstrop’ev ◽  
V. M. Kiselev ◽  
I. M. Kislyakov ◽  
...  
Keyword(s):  
Luminescent Properties ◽  
Nanoparticle Suspensions ◽  
Pbs Nanoparticle
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