scholarly journals A Different Protein Corona Cloaks “True-to-Life” Nanoplastics with Respect to Synthetic Polystyrene Nanobeads

2021 ◽  
Author(s):  
Serena Ducoli ◽  
Stefania Federici ◽  
Roland Nicsanu ◽  
Andrea Zendrini ◽  
Claudio Marchesi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Fourier Transform ◽  
Environmental Samples ◽  
Daily Life ◽  
Protein Corona ◽  
Force Microscopy ◽  
Atomic Force ◽  
Mechanical Fragmentation ◽  
Cryogenic Conditions ◽  
Insight Into

Given the complexity of separating nanoplastics from environmental samples, studies have usually been conducted using synthetic polystyrene nanobeads. By mechanical fragmentation in cryogenic conditions of daily-life plastic items, we produced “true-to-life” nanoplastics (T2LNPs), that promises to give a true insight into the interaction with biological systems. T2LNPs have been fully characterized by Fourier transform Infrared spectroscopy and by Atomic Force Microscopy. They result in populations of spheroidal nanoparticles with a broad multimodal size distribution. The mandatory need for a representative sample to evaluate the potential effects of nanoparticles on human health and the environment is demonstrated by the different protein corona identified on T2LNPs and synthetic polystyrene nanobeads upon incubation with human plasma.

scholarly journals A Different Protein Corona Cloaks “True-to-Life” Nanoplastics with Respect to Synthetic Polystyrene Nanobeads

2021 ◽  
Author(s):  
Serena Ducoli ◽  
Stefania Federici ◽  
Roland Nicsanu ◽  
Andrea Zendrini ◽  
Claudio Marchesi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Fourier Transform ◽  
Environmental Samples ◽  
Daily Life ◽  
Protein Corona ◽  
Force Microscopy ◽  
Atomic Force ◽  
Mechanical Fragmentation ◽  
Cryogenic Conditions ◽  
Insight Into

Given the complexity of separating nanoplastics from environmental samples, studies have usually been conducted using synthetic polystyrene nanobeads. By mechanical fragmentation in cryogenic conditions of daily-life plastic items, we produced “true-to-life” nanoplastics (T2LNPs), that promises to give a true insight into the interaction with biological systems. T2LNPs have been fully characterized by Fourier transform Infrared spectroscopy and by Atomic Force Microscopy. They result in populations of spheroidal nanoparticles with a broad multimodal size distribution. The mandatory need for a representative sample to evaluate the potential effects of nanoparticles on human health and the environment is demonstrated by the different protein corona identified on T2LNPs and synthetic polystyrene nanobeads upon incubation with human plasma.

scholarly journals Quantitative atomic force microscopy provides new insight into matrix vesicle mineralization

2019 ◽  
Vol 667 ◽  
pp. 14-21 ◽  
Author(s):  
Justin S. Plaut ◽  
Agnieszka Strzelecka-Kiliszek ◽  
Lukasz Bozycki ◽  
Slawomir Pikula ◽  
René Buchet ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Matrix Vesicle ◽  
Force Microscopy ◽  
Atomic Force ◽  
Insight Into

scholarly journals Synthesis and design of laboratory device from proton conducting block copolymer membrane

BIBECHANA ◽  
2012 ◽  
Vol 9 ◽  
pp. 50-58
Author(s):  
Shankar P Khatiwada ◽  
Amar P Yadav ◽  
Werner Lebek ◽  
Jean Marc Saiter ◽  
Rameshwar Adhikari
Keyword(s):  
Electron Microscopy ◽  
Atomic Force Microscopy ◽  
Fourier Transform ◽  
Block Copolymer ◽  
Triblock Copolymer ◽  
Proton Conductance ◽  
Proton Conducting ◽  
Force Microscopy ◽  
Atomic Force ◽  
Laboratory Device

The butadiene units of polystyrene-block-polybutadiene-block-polystyrene (SBS) triblock copolymer were subjected to epoxidation and subsequent sulphonation in order to prepare proton conducting ionomer membrane. The products were characterized by different techniques such as atomic force microscopy, Fourier transform infrared (FTIR) spectroscopy and electron microscopy. A simple laboratory device was developed to carry out the tests on proton conductance ability of the prepared ionomer membrane. The experiments demonstrated that the prepared membrane excellently performed as proton conducting membrane. DOI: http://dx.doi.org/10.3126/bibechana.v9i0.7174 BIBECHANA 9 (2013) 50-58

Insight into the Deformation Mechanisms under a Sharp Contact Loading in Glass by Atomic Force Microscopy

2005 ◽  
Vol 904 ◽  
Author(s):  
Tanguy Rouxel ◽  
Satoshi Yoshida ◽  
Haixia Shang ◽  
Jean-Christophe Sangleboeuf
Keyword(s):  
Atomic Force Microscopy ◽  
Contact Area ◽  
Elastic Recovery ◽  
Residual Deformation ◽  
Constitutive Law ◽  
Indentation Creep ◽  
Contact Loading ◽  
Force Microscopy ◽  
Atomic Force ◽  
Insight Into

AbstractThe response of a material to a sharp contact loading, as in the case of Vickers indentation for instance, provides a unique insight into the material constitutive law, including elastic and irreversible deformation parameters as well. However, under such peculiar thermodynamical and mechanical conditions (the mean contact pressure on the contact area reaches values typically higher than 1 GPa, corresponding to the hardness of the material) the deformation processes are complex and the matter located just beneath and around the contact area may experience some structural changes and behave in a way different to the expected - or known - macroscopic behaviour. It is showed in this study by means of detailed topological investigations of the residual indentations by Atomic Force Microscopy (AFM) that the elastic recovery typically represents 50 to 70 % of the indentation volume at maximum load and that the densification contribution may reach 90 % of the residual deformation volume. Besides, most glasses exhibit indentation-creep phenomena, which become significant over time scale of few minutes because of a pronounced shear-thinning behavior..

scholarly journals Salmon Muscle Adherence to Polymer Coatings and Determination of Antibiotic Residues by Reversed-Phase High-Performance Liquid Chromatography Coupled to Selected Reaction Monitoring Mass Spectrometry, Atomic Force Microscopy, and Fourier Transform Infrared Spectroscopy

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
E. Zumelzu ◽  
M. J. Wehrhahn ◽  
O. Muñoz ◽  
F. Rull
Keyword(s):  
Mass Spectrometry ◽  
Atomic Force Microscopy ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Fourier Transform Infrared ◽  
Urea Solution ◽  
Antibiotic Residues ◽  
Force Microscopy ◽  
Atomic Force

The persistent adhesion of salmon muscle to food container walls after treatment with urea solution was observed. This work evaluated the diffusion of antibiotics from the salmon muscle to the polyethylene terephthalate (PET) coating protecting the electrolytic chromium coated steel (ECCS) plates. New aquaculture production systems employ antibiotics such as florfenicol, florfenicol amine, oxytetracycline, and erythromycin to control diseases. The introduction of antibiotics is a matter of concern regarding the effects on human health and biodiversity. It is important to determine their impact on the adhesion of postmortem salmon muscle to can walls and the surface and structural changes affecting the functionality of multilayers. This work characterized the changes occurring in the multilayer PET polymer and steel of containers by electron microscopy, 3D atomic force microscopy (3D-AFM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) analyses. A robust mass spectrometry methodology was employed to determine the presence of antibiotic residues. No evidence of antibiotics was observed on the protective coating in the range between 0.001 and 2.0 ng/mL; however, the presence of proteins, cholesterol, and alpha-carotene was detected. This in-depth profiling of the matrix-level elements is relevant for the use of adequate materials in the canning export industry.

Numerical Analysis of the Band Excitation AFM Method: Examining the Characteristics of the Excitation Signals and the Corresponding Response Behavior at the Cantilever Tip

2011 ◽  
Author(s):  
Adam U. Kareem ◽  
Santiago D. Solares
Keyword(s):  
Atomic Force Microscopy ◽  
Initial Step ◽  
Phase Content ◽  
Frequency Content ◽  
Response Behavior ◽  
Force Microscopy ◽  
Atomic Force ◽  
Sinc Functions ◽  
Insight Into ◽  
Excitation Method

We present numerical simulations of a recently developed atomic force microscopy (AFM) technique known as the Band Excitation Method, developed by Jesse et al. [2007 Nanotechnology 18 435503]. With this technique an AFM microcantilever is simultaneously excited and the response measured over a continuum band of frequencies. The purpose of this work is to introduce an analytical model providing insight into the dynamics of the Band Excitation Method, which can help in the translation of the acquired signals into sample properties. As an initial step we examine the cantilever response to two distinct excitation signals, the chirp and sinc functions, both of which have uniform frequency content, differing only in the phase content.

scholarly journals Detection of Peptide-Lipid Interactions in Mixed Monolayers, Using Isotherms, Atomic Force Microscopy, and Fourier Transform Infrared Analyses

2000 ◽  
Vol 78 (2) ◽  
pp. 846-856 ◽  
Author(s):  
Véronique Vié ◽  
Nicole Van Mau ◽  
Laurent Chaloin ◽  
Eric Lesniewska ◽  
Christian Le Grimellec ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Mixed Monolayers ◽  
Force Microscopy ◽  
Lipid Interactions ◽  
Atomic Force
Sign in / Sign up

Export Citation Format

Share Document