Rotational Rheometer and Method for Manufacturing a Component

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The invention discloses a miniaturized rotary rheometer and a method for manufacturing a component for such an instrument. The rotary rheometer features a highly compact rotor with an exceptionally low moment of inertia, which allows for precise measurement of the flow and deformation behavior of minute sample volumes. Key components include advanced air bearings, possible transparent materials for enhanced optical access, and a mechanism for accurately detecting the angular position of the rotor. The manufacturing method uses laser technology to create precise optical structures and channels in transparent materials.

Use CasesContent extracted from patent full text and abstract with AI.

• Measurement of flow and viscoelastic properties of rare or valuable samples (e.g., pharmaceuticals, biomaterials, advanced composites).
• Analysis of very small biological samples, such as limited blood specimens or microorganisms from biofilms.
• Rheological characterization of microfluidic samples in research and diagnostics.
• Process control in semiconductor manufacturing using specialized pastes for integrated circuit production.
• Development and testing of next-generation polymer or complex fluids in materials science.
• Integration with microscopy for simultaneous rheological and high-resolution optical investigation.

BenefitsContent extracted from patent full text and abstract with AI.

• Extremely low sample volume requirement, allowing analysis of scarce or expensive materials.
• Greater sensitivity and precision in measurements, particularly with low-viscosity samples.
• Capability to reach very high oscillation frequencies due to low rotor inertia, expanding the scope of rheological studies.
• Reduced compliance corrections and mechanical noise thanks to minimal moving mass and advanced bearings.
• Optical access and integration with microscopy enables multiparameter investigation (e.g., morphology and flow behavior simultaneously).
• Versatile manufacturing method allows for rapid prototyping and precise customization of instrument components.

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Inventors & Applicants

Patent Abstract

The invention relates to a rotary rheometer and to a method for producing a component for a rotary rheometer. A rotary rheometer (10) comprises a driven rotor (20) with a first measuring part (11) and a detection device (14) for detecting an angular position, wherein a second measuring part (12) can be arranged opposite the first measuring part (11) on a common axis (A) with the first measuring part (11), in such a way that a sample space (16) for receiving a sample (17) to be analysed is provided between the first measuring part (11) and the second measuring part (12). The rotor (20) has a moment of inertia of at most 10-6 kg*m2.