Product category:
Liquid Analysis: Spectroscopy, Colour
News Release from: Ultrasonic Scientific | Subject: High-Resolution Ultrasonic Spectroscopy
Edited by the Processingtalk Editorial
Team on 03 March 2004
Ultrasonic spectroscopy for material
analysis
Ultrasonic Scientific invites rheologists to learn more about ultrasonic spectroscopy for material analysis, with demonstrations on emulsions, suspensions, solutions of polymers and other materials
Ultrasonic Scientific invites rheologists to learn more about the use of ultrasonic spectroscopy for material analysis Rheologists are being invited to contact Ultrasonic Scientific for information and demonstrations of the application of High-Resolution Ultrasonic Spectroscopy (HR-US) for high-frequency rheological characterisation of emulsions, suspensions, solutions of polymers and other materials
This article was originally published on Processingtalk on 11 Dec 2003 at 8.00am (UK)
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New HR-US technology at Pittcon 2004
Ultrasonic Scientific, innovator in high-resolution ultrasonic spectroscopy for material analysis, will be showcasing its innovative NEW ultrasonic titration analyser, and spectroscopy at PITTCON 2004
Material analysis of Pittcon liqueur ice cream
Ultrasonic Scientific, innovator in High-Resolution Ultrasonic Spectroscopy for material analysis, is holding seminars at Pittcon 2004, Chicago, given by world authorities on ultrasound technology
High-Resolution Ultrasonic Spectroscopy is a novel analytical technique based on the measurements of parameters of low energy waves of longitudinal deformations propagating through analysed samples.
This provides information on the interaction of ultrasonic waves with the samples interior thus allowing the analysis of its physical and chemical properties.
The measured values of ultrasonic velocity and attenuation can be recalculated into the longitudinal storage and loss moduli of the sample.
Unlike conventional rheometers, which are unable to measure directly the processes and interactions at the microscopic and molecular levels, the new award winning HR-US family of spectrometers from Ultrasonic Scientific have reduced the 'guess-work', enabling the effect of a change in formulation, process, and raw material to be analysed directly, quickly and easily at the nano level.
Very short linear visco-elastic regions (e.g in weak particle gels) can be explored, as the amplitude of the motion induced in the sample is very small.
Very short relaxation time processes can also be detected because of the short period of deformation in the ultrasonic wave.
Other benefits of the HR-US technique include.
Non-destructive.
Broad dynamic range.
Enables analysis of intermolecular forces, sample structures, composition, and phase transition.
Minimum sample preparation.
Minimum calibration.
High-Resolution.
Small sample volume required.
Enclosed sample chamber prevents evaporation.
Excellent temperature control.
Digital stirring system allows measurements and stirring at the same time.
Some of the applications of the HR-US technique are: analysis of industrial emulsions and suspensions, pharmaceutical suspension stability; gelation and micro-structure of food colloids; material testing; surfactants and micelles; polymers.
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