Nanoparticle Tracking Analysis for Multiparameter Characterization and Counting of Nanoparticle Suspensions

2020 ◽  
pp. 289-303 ◽  
Author(s):  
Duncan Griffiths ◽  
Pauline Carnell-Morris ◽  
Matthew Wright
Keyword(s):  
Nanoparticle Tracking Analysis ◽  
Nanoparticle Suspensions

Application of Nanoparticle Tracking Analysis (NTA) in Aqueous Solutions of TiO2

2014 ◽  
Vol 802 ◽  
pp. 624-629 ◽  
Author(s):  
Elizabeth Mendes de Oliveira ◽  
Izabella Christynne Ribeiro Pinto Valadão ◽  
Adriana de Souza Forster Araújo ◽  
José Adilson de Castro
Keyword(s):  
Aqueous Solutions ◽  
Rio De Janeiro ◽  
Retention Rate ◽  
The State ◽  
Tio2 Nanoparticle ◽  
Experimental Results ◽  
Fundamental Importance ◽  
Nanoparticle Tracking Analysis ◽  
Soil Layers ◽  
Nanoparticle Suspensions

The study of nanoparticles involves a new field of research in various areas of technology, whose production and use have been recognized as multiple benefits to the society. However, the uncontrolled emission to the environment of nanoparticles is growing exponentially over the last decade. Thus, knowledge of the influence of nanoparticles and how they can modify the ecosystem is extremely importantand demand specific studies. Therefore, it is of fundamental importance to increase the knowledge of the interactions and transport of nanoparticles in soil, in particular this research will study the TiO2nanoparticles (TiNPs). Aiming to improve such knowledge, this paper addressed tests on columns with soil collected in the landfill Volta Redonda located in the state of Rio de Janeiro, Brazil. Aliquots of TiO2-nanoparticle suspensions in soil were collected periodically after their preparation, and analyzed the aggregate of particles distribution and Ti concentration. Experimental results suggest that the higher stability of TiO2suspensions resulted in a higher mobility of TiO2through soil layers with lower retention rate.

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.

Monitoring the Rab27 associated exosome pathway using nanoparticle tracking analysis

2013 ◽  
Vol 319 (12) ◽  
pp. 1706-1713 ◽  
Author(s):  
Ying Zheng ◽  
Elaine C. Campbell ◽  
John Lucocq ◽  
Andrew Riches ◽  
Simon J. Powis
Keyword(s):  
Nanoparticle Tracking Analysis

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.

QCM Study of Tribotronic Control in Ionic Liquids and Nanoparticle Suspensions

2021 ◽  
Vol 69 (3) ◽  
Author(s):  
C. M. Seed ◽  
B. Acharya ◽  
J. Krim
Keyword(s):  
Ionic Liquids ◽  
Nanoparticle Suspensions

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.

scholarly journals Prospects and limitations of antibody-mediated clearing of lipoproteins from blood plasma prior to nanoparticle tracking analysis of extracellular vesicles

2017 ◽  
Vol 6 (1) ◽  
pp. 1308779 ◽  
Author(s):  
Morten Mørk ◽  
Aase Handberg ◽  
Shona Pedersen ◽  
Malene M. Jørgensen ◽  
Rikke Bæk ◽  
...  
Keyword(s):  
Blood Plasma ◽  
Extracellular Vesicles ◽  
Nanoparticle Tracking Analysis

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
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