Aminated graphene for DNA attachment produced via plasma functionalization

2012 ◽  
Vol 100 (23) ◽  
pp. 233123 ◽  
Author(s):  
Mira Baraket ◽  
Rory Stine ◽  
Woo K. Lee ◽  
Jeremy T. Robinson ◽  
Cy R. Tamanaha ◽  
...  
Keyword(s):  
Dna Attachment ◽  
Plasma Functionalization

scholarly journals Superhydrophilic Coating of Pine Wood by Plasma Functionalization of Self-Assembled Polystyrene Spheres

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 114
Author(s):  
Sebastian Dahle ◽  
John Meuthen ◽  
René Gustus ◽  
Alexandra Prowald ◽  
Wolfgang Viöl ◽  
...  
Keyword(s):  
Dip Coating ◽  
Face Centered Cubic ◽  
Wood Substrate ◽  
Polystyrene Spheres ◽  
Pine Wood ◽  
Self Assembling ◽  
Monodisperse Polystyrene ◽  
Self Assembled ◽  
Face Centered ◽  
Plasma Functionalization

Self-assembling films typically used for colloidal lithography have been applied to pine wood substrates to change the surface wettability. Therefore, monodisperse polystyrene (PS) spheres have been deposited onto a rough pine wood substrate via dip coating. The resulting PS sphere film resembled a polycrystalline face centered cubic (FCC)-like structure with typical domain sizes of 5–15 single spheres. This self-assembled coating was further functionalized via an O2 plasma. This plasma treatment strongly influenced the particle sizes in the outermost layer, and hydroxyl as well as carbonyl groups were introduced to the PS spheres’ surfaces, thus generating a superhydrophilic behavior.

DNA attachment to nanocrystalline diamond films

2005 ◽  
Vol 202 (11) ◽  
pp. 2212-2216 ◽  
Author(s):  
S. Wenmackers ◽  
P. Christiaens ◽  
M. Daenen ◽  
K. Haenen ◽  
M. Nesládek ◽  
...  
Keyword(s):  
Diamond Films ◽  
Nanocrystalline Diamond ◽  
Nanocrystalline Diamond Films ◽  
Dna Attachment

Plasma functionalization procedure for antibody immobilization for SU-8 based sensor

2016 ◽  
Vol 86 ◽  
pp. 827-833 ◽  
Author(s):  
Immacolata Angelica Grimaldi ◽  
Genni Testa ◽  
Gianluca Persichetti ◽  
Fausta Loffredo ◽  
Fulvia Villani ◽  
...  
Keyword(s):  
Antibody Immobilization ◽  
Plasma Functionalization

New manufacturing process to develop antibacterial dyed polyethylene terephthalate sutures using plasma functionalization and chitosan immobilization

2021 ◽  
pp. 152808372110505
Author(s):  
Nesrine Bhouri ◽  
Faten Debbabi ◽  
Abderrahmen Merghni ◽  
Esther Rohleder ◽  
Boris Mahltig ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyethylene Terephthalate ◽  
Manufacturing Process ◽  
Antibacterial Effect ◽  
Inhibition Zone ◽  
The United States ◽  
Mechanical Tests ◽  
Inflammatory Reactions ◽  
Plasma Functionalization

The main purpose of this paper is to develop a new manufacturing process leading to have antibacterial dyed non-absorbable braided polyethylene terephthalate (PET) sutures using biocompatible and non-toxic products. This manufacturing process allows better visibility of sutures in the surgical field and reduces the risk of infections and inflammatory reactions without affecting the mechanical properties while meeting the United States Pharmacopeia (USP) requirements. Plasma functionalization, acrylic acid (AA) grafting, and bioactive chitosan (CH) coating were used before the dyeing process with a biocompatible non-toxic acid dye, approved by the Food and Drug Administration (FDA). The influence of experimental parameters on the suture properties and the K/S values of the dyed sutures are investigated. Infrared spectroscopy confirms the presence of new bonds to immobilize chitosan on the surface of the suture. Mechanical tests confirm that the mechanical properties of sutures have not been affected. The in vitro antibacterial effect of dyed PET sutures showed an inhibition zone of 11 mm against S. aureus, 4 mm against P. aeruginosa, and 1 mm against E. coli. This study reveals that the new finishing process of sutures is a promising method to achieve an antibacterial effect with a uniform shade and smooth surfaces.

Influence of Plasma Functionalization of Poly(propylene) with Acrylic Acid on the Nucleation of CaCO3

2004 ◽  
Vol 1 (1) ◽  
pp. 51-56 ◽  
Author(s):  
Vincenzo Sciarratta ◽  
Christian Oehr ◽  
Carsten Diegelmann ◽  
Peer Löbmann
Keyword(s):  
Acrylic Acid ◽  
Poly Propylene ◽  
Plasma Functionalization

DNA Attachment Chemistry at the Flexible Silicone Elastomer Surface:  Toward Disposable Microarrays

Langmuir ◽  
2004 ◽  
Vol 20 (25) ◽  
pp. 11100-11107 ◽  
Author(s):  
Ashish A. Vaidya ◽  
Michael L. Norton
Keyword(s):  
Silicone Elastomer ◽  
Dna Attachment

Membrane-DNA attachment sites in Streptococcus faecalis cells grown at different rates

1982 ◽  
Vol 152 (1) ◽  
pp. 191-200
Author(s):  
L C Parks ◽  
D Rigney ◽  
L Daneo-Moore ◽  
M L Higgins
Keyword(s):  
Cell Membrane ◽  
Alternative Model ◽  
Double Strand Breaks ◽  
Bacterial Chromosome ◽  
Reliable Estimate ◽  
Streptococcus Faecalis ◽  
Strand Breaks ◽  
The Core ◽  
Attachment Sites ◽  
Dna Attachment

The M-band technique was used to assess the number of attachment points of DNA to the cell membrane of Streptococcus faecalis grown at three different rates. Cells were X irradiated in liquid nitrogen and then analyzed simultaneously for the introduction of double-strand breaks into the chromosome and the degree of removal of DNA from the cell membrane (M band). Consideration of the data from these experiments and of the topology of the bacterial chromosome resulted in a reevaluation of former quantitative models. Our results are consistent with a semiquantitative model in which the bacterial chromosome is organized around a core structure. We interpret our data to mean that the core is attached to the membrane and that the complexity of the core changes more drastically with growth rate than does the number of membrane-DNA attachment points. An alternative model in which RNA hybridizes with DNA containing single- and double-strand breaks is also discussed. In any event, the complexity of these interactions precludes a reliable estimate of the number of membrane-DNA attachment sites.

scholarly journals The effect of plasma functionalization on the print performance and time stability of graphite nanoplatelet electrically conducting inks

2020 ◽  
Author(s):  
Andrew Claypole ◽  
James Claypole ◽  
Tim Claypole ◽  
David Gethin ◽  
Liam Kilduff
Keyword(s):  
Printed Electronics ◽  
Low Cost ◽  
Electrical Performance ◽  
Graphite Nanoplatelets ◽  
Interparticle Interactions ◽  
Electrically Conducting ◽  
Wide Range ◽  
Oscillatory Rheology ◽  
The Stability ◽  
Plasma Functionalization

Abstract Carbon-based pastes and inks are used extensively in a wide range of printed electronics because of their widespread availability, electrical conductivity and low cost. Overcoming the inherent tendency of the nano-carbon to agglomerate to form a stable dispersion is necessary if these inks are to be taken from the lab scale to industrial production. Plasma functionalization of graphite nanoplatelets (GNP) adds functional groups to their surface to improve their interaction with the polymer resin. This offers an attractive method to overcome these problems when creating next generation inks. Both dynamic and oscillatory rheology were used to evaluate the stability of inks made with different loadings of functionalized and unfunctionalized GNP in a thin resin, typical of a production ink. The rheology and the printability tests showed the same level of dispersion and electrical performance had been achieved with both functionalized and unfunctionalized GNPs. The unfunctionalized GNPs agglomerate to form larger, lower aspect particles, reducing interparticle interactions and particle–medium interactions. Over a 12-week period, the viscosity, shear thinning behavior and viscoelastic properties of the unfunctionalized GNP inks fell, with decreases in viscosity at 1.17 s−1 of 24, 30, 39% for the ϕ = 0.071, 0.098, 0.127 GNP suspensions, respectively. However, the rheological properties of the functionalized GNP suspensions remained stable as the GNPs interacted better with the polymer in the resin to create a steric barrier which prevented the GNPs from approaching close enough for van der Waals forces to be effective.

scholarly journals Antibiotic-loaded polypropylene surgical meshes with suitable biological behaviour by plasma functionalization and polymerization

Biomaterials ◽  
2015 ◽  
Vol 71 ◽  
pp. 132-144 ◽  
Author(s):  
C. Labay ◽  
J.M. Canal ◽  
M. Modic ◽  
U. Cvelbar ◽  
M. Quiles ◽  
...  
Keyword(s):  
Biological Behaviour ◽  
Surgical Meshes ◽  
Plasma Functionalization
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