Colloids

Kolloide

Kolloide sind Systeme, in denen eine Substanz gleichmäßig in einer anderen verteilt ist (Partikelgrößen zwischen 1 und 1000 Nanometer). Die Kolloid- und Grenzflächenforschung über diese Systemen ist für viele Bereiche relevant: für die Nanotechnologie und Biotechnologie oder u. a. auch für die Entwicklung von Pharmazeutika. Finden Sie das Messgerät für Ihre speziellen Anforderungen in der unten angeführten Liste – oder wenden Sie sich direkt an uns, damit wir Ihnen helfen können, die beste Lösung auszuwählen.

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Quantum dots - Size determination by SAXS

Quantum dots - Size determination by SAXS

A dispersion of nanosized CdSe quantum dots was analyzed with the SAXSpace system. The particle size, which is a very crucial parameter for the properties of quantum dots, was determined within a very short time.

Desmearing of Line-smeared Scattering Curves

Desmearing of Line-smeared Scattering Curves

Small Angle X-Ray Scattering instruments use two different beam geometries - point collimation and line collimation. Using a line shaped beam dramatically reduces the measurement time while maintaining the same data quality.

Protein Mass Determination using Small Angle X-Ray Scattering

Protein Mass Determination using Small Angle X-Ray Scattering

The molecular weight of Glucose Isomerase was determined with the SAXSpace small-angle X-ray scattering system. The results are in good agreement with theoretically calculated values from X-ray crystallography data.

Protein Shape Determination by Small Angle X-Ray Scattering

Protein Shape Determination by Small Angle X-Ray Scattering

The 3-dimensional shape of Glucose Isomerase in solution was studied with the SAXSpace system. The solution structure of this protein was compared with the crystal structure obtained by X-ray crystallography.

Studying the Internal Structure of Carbon Nanotubes with SAXS

Studying the Internal Structure of Carbon Nanotubes with SAXS

A polymer/multi-walled carbon nanotubes composite was measured with the SAXSpace system. The internal structure of the nanotubes was determined by calculating the electron density profile of the nanotube’s cross-section.

Fast SAXS Measurements of a Diluted Protein Solution

Fast SAXS Measurements of a Diluted Protein Solution

A 1% Lysozyme solution was measured with the SAXSpace system. Structural information can be obtained already after 1 minute due to the highly intense line-collimation mode and the compact design of the SAXSpace system.

Structural Characterization of a Mesoporous Material

Structural Characterization of a Mesoporous Material

A mesoporous material was studied with the SAXSpace system. Important structural parameters like pore size, degree of polydispersity, total volume fraction of the pores and arrangement of the pores were obtained.

Size and Size Distribution of Gold Nanoparticles by SAXS

Size and Size Distribution of Gold Nanoparticles by SAXS

Gold nanoparticle dispersions were measured with the SAXSpace system. SAXS proved to be a well-suited method for determining the size distribution of a binary mixture of two dispersions with very similar particle size.

An Insight into the Structure of Surfactants

An Insight into the Structure of Surfactants

The structure of inhomogeneous (core-shell) nanoparticles was studied with the SAXSpace system. The internal structure of Sodium Dodecyl Sulfate micelles in water was determined by calculating the radial electron density profile.

Studying the Internal Structure of Lamellar Systems

Studying the Internal Structure of Lamellar Systems

The SAXSpace system was used to characterize nano-structured lamellae present in a surfactant sample. The internal structure (core-shell) of the lamellae could be precisely determined.

Structure Determination of Interacting Sample Systems

Structure Determination of Interacting Sample Systems

Evaluation of interacting (charged or concentrated) particles requires the knowledge of “form and structure factor”. The unique GIFT software allows to study samples in their original state and to determine the nanostructure of the particles.

Coir fibers - SWAXS studies of structural changes induced by tensile stress

Coir fibers - SWAXS studies of structural changes induced by tensile stress

Microfibril angle in coir fibers during tensile straining was studied using the SAXSpace system operated in point collimation mode in combination with the integrated TS 600 tensile stage.

Fast Structure Analysis of Pharmaceutical Excipients by SWAXS for Product Quality Control

Fast Structure Analysis of Pharmaceutical Excipients by SWAXS for Product Quality Control

The nanostructure of pharmaceutical excipients used as taste masking agents was rapidly determined for quick quality control with the SAXSpace system.

Quality control of pharmaceutical excipients during storage and processing

Quality control of pharmaceutical excipients during storage and processing

The structure of pharmaceutical excipients as a function of storage time and temperature was analyzed by small- and wide-angle X-ray scattering using the SAXSpace system.

Small Angle X-Ray Scattering with Microcrystalline Materials

Small Angle X-Ray Scattering with Microcrystalline Materials

SAXS is routinely used for the characterization of liquid crystalline phases. If the crystalline domains are large and the sample is very viscous the scattering is not averaged over all orientations. The RotorCell enables measuring such samples.

Concentration Measurement of Sodium Hydroxide Solutions by Refractive Index

Concentration Measurement of Sodium Hydroxide Solutions by Refractive Index

The concentration of sodium hydroxide in water can be easily and quickly determined by refractive index measurement.

Improve Digestion Quality and Save Money – Microwave Digestion rules out Open Digestion

Improve Digestion Quality and Save Money – Microwave Digestion rules out Open Digestion

Reliable elemental analysis results need robust sample preparation to destroy sample matrices or to separate matrix from analytes. The sample preparation step is by far the most error-prone and critical step of the analytical procedure.

Refractive Index Measurement of Ionic Liquids

Refractive Index Measurement of Ionic Liquids

Ionic liquids are special designer solvents as they are nonvolatile and liquid at ambient temperature, leading to a wide range of applications. Their refractive index helps to control the quality and also to characterize them.

Have a Good Trip

Have a Good Trip

Refractometers are widely used in the automotive industry, e.g. to control the quality of oils, chemical liquids and solids such as plastics and glasses.

Milk: Know the particles, know the quality

Milk: Know the particles, know the quality

The size of the fat particles in milk can vary, which strongly affects milk quality. Characterizing milk-based particles is fast and accurate with the Litesizer™ 500.

Gold nanoparticles: Size matters, and so does stability

Gold nanoparticles: Size matters, and so does stability

Gold nanoparticles are now used in many fields, from medicine to electronics, but each application has specific particle-size and stability requirements. Gold nanoparticles can be easily monitored with the Litesizer™ 500.

Identifying three different particle sizes in one sample with DLS

Identifying three different particle sizes in one sample with DLS

Particle suspensions often contain more than one size of particle. However, many particle analyzers cannot resolve particle mixtures, instead they detect an average of all sizes. The Litesizer™ 500 can detect three sizes in one sample.

Nanoparticles for Ceramics: Size, Stability & pH

Nanoparticles for Ceramics: Size, Stability & pH

In nanoparticle suspensions that will be used in ceramics, particle size and stability are of vital importance. Suspension stability is essential to ensure that the particles to stay in suspension, and maintain constant particle size.

Temperature-dependent GISAXS studies on thin films

Temperature-dependent GISAXS studies on thin films

The temperature-induced decomposition of a thin film structure has been studied using the SAXSpoint system with the new temperature-controlled GISAXS stage.

An insight into the Structure of Copolymer Surfactants

An insight into the Structure of Copolymer Surfactants

The structure of inhomogeneous (core-shell) nanoparticles was studied with the SAXSpoint system. The internal structure of Pluronic P123 micelles in water was determined by calculating the radial electron density profile.

Collagen - A Validation Sample for SAXS Systems

Collagen - A Validation Sample for SAXS Systems

The performance of the SAXSpoint 2.0 system is evaluated by measurements of tendon collagen. SAXSpoint 2.0 produces data with excellent resolution in the entire angular range and delivers true 2D SWAXS images.

SAXSpoint with MetalJet Source

SAXSpoint with MetalJet Source

SAXSpoint now integrates the high-brightness MetalJet X-ray source enabling ultra-fast SAXS measurements in the laboratory.

In-situ GISAXS heating experiments on self-assembled Gold nanoparticles

In-situ GISAXS heating experiments on self-assembled Gold nanoparticles

Thermal morphology changes of self-assembled Gold nanoparticles have been studied using the SAXSpoint system with the temperature controlled GISAXS stage.

Evaluating GISAXS data with SAXSanalysis using the BornAgain export

Evaluating GISAXS data with SAXSanalysis using the BornAgain export

A detailed GISAXS structure analysis of a monolayer of gold nanoparticles with SAXSanalysis and BornAgain.