Results 61 to 70 of about 19,502 (174)

Chitosan coating as an antibacterial surface for biomedical applications. [PDF]

PLoS ONE, 2017
A current public health issue is preventing post-surgical complications by designing antibacterial implants. To achieve this goal, in this study we evaluated the antibacterial activity of an animal-free chitosan grafted onto a titanium alloy.Animal-free ...
Mélanie D'Almeida, Nina Attik, Julien Amalric, Céline Brunon, François Renaud, Hazem Abouelleil, Bérangère Toury, Brigitte Grosgogeat   +7 more
doaj   +1 more source

ToF-SIMS spectral analysis of Shewanella oneidensis MR-1 biofilms

Results in Surfaces and Interfaces
Analysis of bacterial biofilms is particularly challenging and important with diverse applications from systems biology to biotechnology. Among the variety of techniques that have been applied, time-of-flight secondary ion mass spectrometry (ToF-SIMS ...
Gabriel D. Parker, Andrew Plymale, Luke Hanley, Xiao-Ying Yu   +3 more
doaj   +1 more source

Depth profiling of Cr-ITO dual-layer sample with secondary ion mass spectrometry using MeV ions in the low energy region

Scientific Reports, 2022
This work explores the possibility of depth profiling of inorganic materials with Megaelectron Volt Secondary Ion Mass Spectrometry using low energy primary ions (LE MeV SIMS), specifically 555 keV Cu2+, while etching the surface with 1 keV Ar+ ions ...
Marko Barac, Marko Brajković, Zdravko Siketić, Jernej Ekar, Iva Bogdanović Radović, Iva Šrut Rakić, Janez Kovač   +6 more
doaj   +1 more source

Multivariate ToF-SIMS image analysis of polymer microarrays and protein adsorption [PDF]

, 2015
The complexity of hyperspectral time of flight secondary ion mass spectrometry (ToF-SIMS) datasets makes their subsequent analysis and interpretation challenging, and is often an impasse to the identification of trends and differences within large sample-
Alexander, Morgan R., Hook, Andrew L., Scurr, David J., Williams, Philip M.   +3 more
core   +2 more sources

Iodine Content and Distribution in Thyroid Specimens from Two Patients with Graves' Disease Pretreated with Either Propylthiouracil or Stable Iodine: Analysis Using X-Ray Fluorescence and Time-of-Flight Secondary Ion Mass Spectrometry

Case Reports in Endocrinology, 2012
Patients with Graves' disease can be medically prepared before surgery in different ways, which may have various effects on iodine stores. Thyroid specimens were collected at surgery from two patients pretreated with propylthiouracil (PTU) and stable ...
Marie Hansson, Helena Filipsson Nyström, Svante Jansson, Jukka Lausmaa, Gertrud Berg   +4 more
doaj   +1 more source

C60‐ToF SIMS imaging of frozen hydrated HeLa cells [PDF]

Surface and Interface Analysis, 2012
Sample preparation continues to be a major challenge for SIMS studies of biological materials. Maintaining the native hydrated state of the material is important for preserving both chemical and spatial information. Here, we discuss a method that combines a sample wash and dry protocol followed by plunge‐freezing in liquid ethane for a frozen‐hydrated ...
Alan M. Piwowar, Selda Keskin, Melissa Ortiz Delgado, Kan Shen, Jonathan J. Hue, Ingela Lanekoff, Andrew G. Ewing, Nicholas Winograd   +7 more
openaire   +2 more sources

Using ultra-thin parylene films as an organic gate insulator in nanowire field-effect transistors

, 2018
We report the development of nanowire field-effect transistors featuring an ultra-thin parylene film as a polymer gate insulator. The room temperature, gas-phase deposition of parylene is an attractive alternative to oxide insulators prepared at high ...
Carrad, D.J.,, Cochrane, J.W.,, Gluschke, J.G.,, Lehmann, Sebastian,, Lund University., Lund University., Lyttleton, Roman,, Micholich, A.P.,, Samuelson, Lars,, Seidl, J.,   +9 more
core   +1 more source

Controlling the Electrical Properties of Undoped and Ta-doped TiO2 Polycrystalline Films via Ultra-Fast Annealing Treatments [PDF]

, 2015
We present a study on the crystallization process of undoped and Ta doped TiO2 amorphous thin films. In particular, the effect of ultra-fast annealing treatments in environments characterized by different oxygen concentrations is investigated via in-situ
Concina, Deák, Deák, Ellmer, Engel, Furubayashi, Ghosh, Hagfeldt, Hitosugi, Hoang, Hoang, Huy, Juarez-Perez, Kirchartz, Knauth, Lee, Lee, Lee, Leichtweiss, Liu, Lü, Mazzolini, O'Regan, Ok, Okazaki, Park, Park, Park, Pore, Robertson, Rusydi, Setvin, Shi, Snaith, Tang, Tang, Wang, Weibel, Weng, Yamada, Yamamoto, Yang, Zhang   +42 more
core   +2 more sources

Surface characterization of biological nanodomains using NP‐ToF‐SIMS [PDF]

Surface and Interface Analysis, 2012
This paper describes the application of nanoparticle bombardment with time‐of‐flight secondary ion mass spectrometry (NP‐ToF‐SIMS) for the analysis of native biological surfaces for the case of sagittal sections of mammalian brain tissue. The use of high energy, single nanoparticle impacts (e.g. 520 keV Au 400
Fernandez-Lima, F.A., Debord, J.D., A. Schweikert, E., Della-Negra, S., A. Kellersberger, K., Smotherman, M.   +5 more
openaire   +3 more sources

Surface enhancement of oxygen exchange and diffusion in the ionic conductor La2Mo2O9 [PDF]

, 2010
Isotopic surface oxygen exchange and its subsequent diffusion have been measured using secondary ion mass spectrometry in the fast ionic conductor La2Mo2O9.
Chater, R. J., Hagenhoff, B., Liu, J., Morris, R. J. H. (Richard J. H.), Skinner, S. J.   +4 more
core   +1 more source