PRODUCTION AND BIOFUNCTIONALIZATION OF MAGNETIC NANOBEADS FOR MAGNETIC SEPARATION OF MESSENGER RNA

2007 ◽  
Vol 02 (01) ◽  
pp. 109-122 ◽  
Author(s):  
BENEDIKT STEITZ ◽  
HEINRICH HOFMANN ◽  
ALKE PETRI-FINK
Keyword(s):  
Messenger Rna ◽  
Photon Correlation Spectroscopy ◽  
Superparamagnetic Iron Oxide ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Correlation Spectroscopy ◽  
Photon Correlation ◽  
Transmission Electron ◽  
Fourier Transformation Infrared Spectroscopy ◽  
Means Of Transmission

The synthesis of nanosized beads of superparamagnetic iron oxide nanoparticles coated with 3-(aminopropyl)triethoxysilane is reported in this paper. The resulting beads are agglomerates of SPIONs with an open fractal like structure. These beads have been examined by means of transmission electron microscopy (TEM), photon correlation spectroscopy (PCS), and attenuated total reflection Fourier transformation infrared spectroscopy (ATR-FTIR). The resulting beads with a size of 88 nm have been further biofunctionalized with avidin and biotinylated oligo(dT).

scholarly journals Síntese e caracterização de esferas monodispersas de látex e sua utilização no preparo de filmes de cristais coloidais tridimensionais.

2018 ◽  
Vol 39 (4) ◽  
pp. 79
Author(s):  
Mateus Geraldo Schiavetto ◽  
Roberto Bertholdo ◽  
Sidney José Lima Ribeiro ◽  
Younes Messaddeq
Keyword(s):  
Electron Microscopy ◽  
Photon Correlation Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Correlation Spectroscopy ◽  
Polystyrene Latex ◽  
High Quality ◽  
Photon Correlation ◽  
Glass Slides ◽  
Transmission Electron ◽  
Vertical Deposition Method

Polystyrene latex spheres were obtained by free-emulsifier polymerization of styrene. Suspension was characterized by Photon Correlation Spectroscopy (PCS) and Transmission Electron Microscopy (TEM) and were observed to be monodisperse with sizes around 463 nm. A vertical deposition method was used in order to prepare films deposited on glass slides from the spheres suspension. High-quality opal-like films were obtained and characterized by Reflectance Spectroscopy, Scanning Electron Microscopy (SEM) and Optical Microscopy.

scholarly journals From Femtoseconds to Hours–Measuring Dynamics over 18 Orders of Magnitude with Coherent X-rays

2021 ◽  
Vol 11 (13) ◽  
pp. 6179
Author(s):  
Felix Lehmkühler ◽  
Wojciech Roseker ◽  
Gerhard Grübel
Keyword(s):  
Time Scales ◽  
Free Electron Laser ◽  
Photon Correlation Spectroscopy ◽  
Signal To Noise Ratio ◽  
Coherent Scattering ◽  
Correlation Spectroscopy ◽  
X Rays ◽  
Photon Correlation ◽  
X Ray ◽  
Scattering Technique

X-ray photon correlation spectroscopy (XPCS) enables the study of sample dynamics between micrometer and atomic length scales. As a coherent scattering technique, it benefits from the increased brilliance of the next-generation synchrotron radiation and Free-Electron Laser (FEL) sources. In this article, we will introduce the XPCS concepts and review the latest developments of XPCS with special attention on the extension of accessible time scales to sub-μs and the application of XPCS at FELs. Furthermore, we will discuss future opportunities of XPCS and the related technique X-ray speckle visibility spectroscopy (XSVS) at new X-ray sources. Due to its particular signal-to-noise ratio, the time scales accessible by XPCS scale with the square of the coherent flux, allowing to dramatically extend its applications. This will soon enable studies over more than 18 orders of magnitude in time by XPCS and XSVS.

scholarly journals Grain Growth and Coarsening Dynamics in a Compositionally Asymmetric Block Copolymer Revealed by X-ray Photon Correlation Spectroscopy

2020 ◽  
Vol 53 (19) ◽  
pp. 8233-8243
Author(s):  
Ronald M. Lewis ◽  
Grayson L. Jackson ◽  
Michael J. Maher ◽  
Kyungtae Kim ◽  
Suresh Narayanan ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Grain Growth ◽  
Photon Correlation Spectroscopy ◽  
Correlation Spectroscopy ◽  
Photon Correlation ◽  
X Ray ◽  
Coarsening Dynamics
Sign in / Sign up

Export Citation Format

Share Document