Attension® Theta Optical Tensiometers
Attension® Theta Accessories
A wide selection of modular accessories is available to extend the Attension Theta instrument line’s capabilities and support specialized applications. These plug-and-play modules support advanced experiments involving temperature and humidity control, interfacial rheology, high-pressure or high-temperature environments, and measurements on challenging surfaces. Additional options such as 3D topography, tilting stages, and environmental chambers enable detailed surface characterization across a range of industries and research settings.
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Theta Flow Exclusive
Silicon Wafer Stage
The Attension Theta Wafer is a highly accurate, automated instrument
designed to simplify repetitive contact angle measurements on
silicon wafers. Capable of collecting wettability measurements across
the entire surface area of a wafer, the Theta Wafer system ensures
repeatable analysis for semiconductor research and manufacturing
facilities
Key Features:
- Fully automated contact angle measurements eliminate manual steps for increased accuracy and throughput
- Software-controlled rotational and XYZ motorized stages enable precise positioning and mapping of silicon wafers up to 12 inches in diameter
- Automated drop placement and precision disposable tip dispensers ensure repeatable and controlled droplet deposition of up to four different liquids
- Batch mode allows users to preprogram experiment recipes for repetitive measurements in high-throughput applications like QA/QC
| Rotational Stage Technical Specifications | ||
|---|---|---|
| Rotational Movement Range | 0 – 360° | |
| Max. Rotational Speed | 180 °/s | |
| Resolution | 0.005° | |
| Precision | 0.2° | |
| Sample Specifications | ||
| Suitable Wafer Sizes | 2”, 3”, 4”, 5”, 6”, 8”, 12” | |
| Max. Sample Weight | 500 g | |
| Other | ||
| Connection to Vacuum | Yes | |
| Automated Contact Angle Mapping | Yes | |
Theta Flex & Flow
3D Topography Module
Attension Theta Optical Tensiometer for Topography applications is ideal for studying microscale roughness. The Topography module is an innovative system capable of separating the effect of surface roughness to the contact angle result. As a result, roughness-corrected contact angles can be better compared with each other for research and quality control purposes. Roughness correction on contact angles also enables the calculation of fundamental surface free energy on rough surfaces.
Key Features:
- Integrated method enabling to define contact angle and surface roughness accurately from the same location and to combine both surface chemical and topographical data with automated software calculations.
- Offers fast surface characterization method, which does not demand specialist to run the samples.
- Versatile roughness measurement: both 2D and 3D characterization.
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Theta Flex & Flow
Automatic Picoliter Dispenser
The Picoliter Dispenser is based on piezo-driven inkjet printing technology, and can dispense droplets as small as 20 picoliters. With a volume this small, a drop diameter of less than 100 µm is possible, depending on the contact angle formed.
Key Features:
The Theta Pico leverages the Attension Theta Flow‘s hallmark automation capabilities to remove user-dependent variation in contact angle measurements, enabling each experiment to be repeated with a high level of precision.
- Can be used to measure the contact angle even on the smallest surfaces of less than 100 µm
- Can create droplets as small as 20 pl
Theta Flex & Flow
Tilting Cradle
The Attension Tilting Cradle allows software automated measurement of the dynamic advancing and receding angles as the droplet rolls on a tilted surface. Tilting options range from 0 to 90° with a resolution of 0.1°, giving a precise determination of a droplet’s roll-off angle.
Key Features:
- Range of motion from 0° to 90° degrees, with resolution of 0.1°
- Integration with OneAttension software to streamline data collection for dynamic contact angle research
Theta Flex & Flow
Pulsating Drop
Go beyond surface and interfacial tension measurements to learn about the viscoelasticity of an interface. This technique expands upon the well-established pendant drop method: by oscillating the volume of a droplet with ultrafine control, the interfacial tension measured during the compression and dilation of a film at an air/liquid or liquid/liquid interface allows the rheological properties of viscosity and elasticity to be determined. These components can be used to quantify and characterize emulsion and foam stability.
Theta Flex & Flow
High Pressure Chamber
The Attension® Theta High Pressure is a tensiometer for measuring wettability and interfacial tension at high pressures and high temperatures. The instrument is designed to ensure ease during measurements in the extreme conditions necessary for research into applications such as enhanced oil recovery or fuel storage.
Key Features:
The instrument consists of high-quality parts that ensure the ease of use, functionality, and safety of the system. The chamber itself is made from corrosion resistant stainless steel and can be optionally offered to be made from Hastelloy instead. The chamber includes three windows for visualizing the interphase. The chamber can be placed either in an upright or inverted position which removes the need for using hooked needles as the same straight needle can be used independently of the phases. The chamber sits on the Attension Theta optical tensiometer which uses Full HD-resolution camera to image the interphase precisely.
- Measure surfactants or corrosive liquids.
- Increase pressure without adding fluid into the measurement cell.
- Enables constant surfactant concentration over different pressures.
- Smart design to avoid pump corrosion from brine and other corrosive bulk solutions
- Special Sample Port for easy introduction and cleaning
- Automatic Pump Option
Attension® Theta Accessories
Product Knowledgebase
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White Paper
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