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measurements

  • Sessile drop For static contact angle measurement of a liquid droplets
  • Automatic DCA For dynamic contact angle measurement
  • Meniscus For static contact angle measurement with a fiber/rod
  • Pendant drop For surface and interfacial tension
  • Pulsating drop For dilational interfacial rheology measurement.
  • Batch sessile drop For static contact angle measurements
  • Tilted drop For dynamic contact and roll-off angle measurements.
  • Captive bubble For static contact angle measurement of a gas bubble
  • Reverse pendant drop For surface and interfacial tension
Some measurements requires add-on.

Automatic contact angle mapping of silicon wafers

User independent measurements
Through set recipes and automation
Precision in sample positioning
Through sample alignment pins and integrated vacuum connector

Key features

  • 4 disposable pipette tips

    Superior accuracy with zero possibilities for contamination. Fill all with water or the liquid of your choice

  • Best-in-class camera with DropletPlus

    Superior image quality and improved accuracy

  • Integrated sensors

    Increased traceability of your measurements
All-inclusive system

Software that is all-inclusive, with unlimited licenses and free updates!

Every Attension Optical Tensiometer is complemented by seamlessly integrated sophisticated OneAttension software. Our software updates are effortlessly automatic and, best of all, completely complimentary.

CA remake 432x432-1

Applications

  • Electronics

A closer look

Check out the specifics of Theta Flow and compare it to our Theta Flex and Theta Lite to find out what you need. Theta Flow systems come in ready-made packages optimized for your automation level. Other packages can also be formed easily thanks to the modular design.

Compare Attension Optical Tensiometer range

 

 
Theta Flow
Theta Flex
Theta Lite

Software and hardware
Measuring range (°, mN/m)

0…180, 0.01…2000

 0…180, 0.01…2000 0…180, 0.01…2000
Accuracy (°, mN/m)

±0.1, ±0.01

 ±0.1, ±0.01 ±0.1, ±0.01
Maximum sample size (mm)

Unlimited×100×320

 Unlimited×100×320 (with stage) Unlimited×45×200 (with stage)
Integrated sample holders
√
√
√
Maximum resolution (px)

2592 x 2048 (5 MP)

 1984 × 1264 (2.3 MP) 1280 × 1024 (1.3 MP)
Maximum measuring speed (fps)

3422

 3009 2068
Camera

CMOS 1'' USB 3.0 digital camera with zoom

 CMOS 2/3'' USB 3.0 digital camera with zoom CMOS 1/2'' USB 3.0 digital camera with fixed zoom
Image focusing

Software-controlled autofocus, manual fine focus in optics

 Manual fine focus in optics Manual fine focus by optical rail
Image quality

Enhanced with DropletPlus technology, Native

 Native Native
Camera protection

Inside instrument covers

 Inside instrument covers Inside instrument covers
Camera view angle (°)

-4 ... 2.5, with digital scale

 -4.5 ... 2.5, with mechanical scale -2 ... 2
Light source and size

LED based homogeneous background lighting, 62 x 62 mm

 LED based homogeneous background lighting, 62 x 62 mm LED based background lighting, Ø 20 mm
Field of view (Ø, mm)

1.44…45.3

 1.44…32.3 2.9…12
Measurement indicator LED
√
√
-
Integrated touch display
√
-
-
Environment monitoring
√
-
-
Disposable tip dispensing
√
√
√
Software

OneAttension, includes all measurement modes

OneAttension, includes all measurement modes

OneAttension, includes all measurement modes
Dimensions — Basic frame (L×W×H, mm)

765 x 230 x 435

 765 x 230 x 435 495 x 130 x 310
Weight — Basic frame (kg)

29

 26 5
Power supply (VAC)

100...240

 100...240 100…240
Frequency (Hz)

50...60

 50...60 50 ... 60

Available Measurements
Static contact angle and captive bubble
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√
√
Batch contact angle
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√
√
Dynamic contact angle
√
√
√
Meniscus contact angle
√
√
√
Surface/Interfacial tension
√
√
√
3D surface roughness and roughness-corrected contact angle
√
√
-
Interfacial rheology
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√
-
Surface free energy

Zisman Plot, OWRK/Extended Fowkes, van Oss Acid-Base, Wu, Neumann’s Equation of State, Schultz 1 and 2

OneAttension Software

OneAttension software for Theta Flow is a fine combination of a very intuitive interface and wide functionality. Its cornerstones are a high level of automation, ease of use, and top accuracy. Let's have a look at the features!

 

OneAttension Features

  • Autofocus keeps the picture sharp
    Less user-dependency, more accuracy
  • User-friendly interface
    To get you going in no time
  • Automatic baseline detection and drop shape fitting
    For user-independent precision
  • Seamless interplay with integrated touch screen
    Set up your measurements in seconds
  • Optimized image quality
    Ultra-high resolution image optimized with DropletPlus technology for reliable results
  • Batch contact angle mode
    When you have plenty of tests to run in no time
  • Fully automatic dynamic contact angle mode with the needle method
    For user-independent results
  • Monitors the measurement environment
    High traceability of results linked to measurement conditions 

Wetting and Adhesion analysis is now part of the all-inclusive OneAttension software!

Add more possibilities

With the modular design and an extensive range of modules and accessories you have room to upgrade or change the Attension Theta Flow as your needs evolve. Have a look at a few selected examples or explore the full range below.

t316

Topography 3D module

Theta Flow can be combined with the unique 3D Topography module that takes the wettability and adhesion analysis to a completely new level by measuring both contact angle and surface roughness of the sample in a single measurement. Distinguish the effect of roughness on contact angle and surface free energy.

t317

High Pressure Chamber

The High Pressure Chamber is designed for wettability research within enhanced oil recovery and enables measurements at pressures up to 400 bars and temperatures up to 200°C. Integrated chamber piston and sample port are optimized for the best usability and versatility.

c204a

Tilting cradle

A software controlled tilting cradle. Used for studying dynamic contact angles. Tilting range from 0 to 90° and tilting resolution 0.1°. The vacuum stage top C204B is recommended to be used with this option.

t214

Pulsating Drop Module - PD200

Software controlled drop size pulsing for interfacial rheology measurement of viscoelastic properties of interfacial layers at liquid-air or liquid-liquid interfaces. 

t315a

Picoliter Dispenser

Automated picoliter-scale drop formation. Especially for inkjet applications and for measuring contact angle on very small sample areas.

What others say

Our instruments are present at many prestigious universities and research facilities world wide. Take a minute to find out what others say about Theta Flow. 

citat8

 

Mika Latikka, PhD, Postdoctoral Researcher, Soft Matter and Wetting. Aalto University

”The touch display in Theta Flow makes measurement preparation faster and simpler. Actions like changing the sample and sample liquid are greatly facilitated which allows increasingly efficient measurements.” 
Aalto_University_logo-sv

Aalto University, Finland

Aalto University is a top Finnish university combining science, technology and arts into a collaborative environment for both scientific communities and companies. Our contact angle meters and tensiometers have been used there in research for decades. 

 

citat8

 

Researcher at MIT, US

“The reproducibility of the measurements acquired is excellent even with the lowest surface energy values and the tensiometers are quite flexible with regards to sample size. The software is also very useful and the customer support for the products is excellent.”

MIT-logo-gray-lightgray

MIT, US

MIT, Massachusetts Institute of Technology, is a world-leading research university with a mission to advance knowledge and educate students in science and technology. MIT uses our tensiometers to study contact angles and interfacial energy. 

Learn more

We have gathered all our in-depth knowledge associated with Theta Flow. Browse around amongst webinars, overviews and videos to find a topic of your interest. 

  • Attension
Surface Free Energy Methods
Overview

Surface Free Energy Methods

You get an introduction to surface free energy methods and a comparison chart.

Get it
  • Attension
Contact Angle - What is it and how do you measure it?
White Paper

Contact Angle - What is it and how do you measure it?

Learn more about one of the most used measurement method to study the wettability of the surface.

Download
  • Attension
Surface Evaluation for Good Wettability and Coating Adhesion
Webinar

Surface Evaluation for Good Wettability and Coating Adhesion

As wettability is the most important factor indicating good adhesion, contact angle measurements are commonly used to ensure process quality.

Go there
  • Attension
Characterizing Water Repellency with Dynamic Contact Angles
Webinar

Characterizing Water Repellency with Dynamic Contact Angles

Learn about dynamic contact angles from our experts, and find out why it is useful when characterizing the water repellency of a surface.

Go there
  • Attension
Superhydrophobic and Superhydrophilic Surfaces for Cell Trapping
Webinar

Superhydrophobic and Superhydrophilic Surfaces for Cell Trapping

Check out the webinar by Ville Jokinen, PhD from Aalto University on Superhydrophobic and Superhydrophilic Surfaces for Cell Trapping

Go there
  • Attension
The Influence of Surface Roughness on Wettability
White Paper

The Influence of Surface Roughness on Wettability

Learn how surface roughness is measured with Theta Topography and in what applications it is useful.

Download
  • Attension
Characterization and analysis of hydrophobicity, interfacial tension and contact angle of acetyl TAG used for various food applications
Webinar

Characterization and analysis of hydrophobicity, interfacial tension and contact angle of acetyl TAG used for various food applications

Listen to Eda Kaya, PhD from Kansas State University explaining contact angle measurements in food applications.

Go there
  • Attension
Determination of Optimal Plasma Treatment Time of Polypropylene
Case Study

Determination of Optimal Plasma Treatment Time of Polypropylene

Learn how contact angle and surface free energy can be utilized to determine the optimum plasma treatment time.

Get it
  • Attension
Surface and Interfacial Tension
White Paper

Surface and Interfacial Tension

Study the different measurement methods to select the best choice for your application.

Download
  • Attension
CO2-in-water Foam
Webinar

CO2-in-water Foam

Hear Professor Sandro da Rocha on CO2-in-water foams and how to design surfactants for these systems.

Go there
  • Attension
How to Measure Superhydrophobic Surfaces in Practice?
Webinar

How to Measure Superhydrophobic Surfaces in Practice?

Learn how your measurements should be conducted for reliable results and what instrumentation you need.

Go there
  • Attension
Developing contact angle measurements for wettability of dairy powders
Webinar

Developing contact angle measurements for wettability of dairy powders

Doctorate in Science (DSc) Riitta Partanen studied chemical technology in Helsinki University of Technology, where she defended her doctoral thesis on water and oxygen dynamics in food matrices in 2008. She worked at VTT on food structure for 15 years and joined Valio R&D in 2013. She is currently working as a research manager at Valio.

Go there
  • Attension
Interfacial Rheology as Emulsion and Foam Stability Indicator
Case Study

Interfacial Rheology as Emulsion and Foam Stability Indicator

Shows how interfacial rheology measurement can be used as quality control tool.

Get it
  • Attension
Contact Angle Measurements in Electronics
Overview

Contact Angle Measurements in Electronics

Learn how contact angle measurements can be utilized in electronics.

Get it
  • Attension
Effect of Wettability in Biomedical Applications
Overview

Effect of Wettability in Biomedical Applications

Explore why wettability measurements are an important part of biomaterial characterization.

Get it
  • Attension
Evaluation of Biomedical Coatings with Contact Angle Measurement
Case Study

Evaluation of Biomedical Coatings with Contact Angle Measurement

Learn how contact angle measurements can be used to evaluate biomedical coatings.

Get it
  • Attension
Wettability Alteration in Carbonate Reservoir
Overview

Wettability Alteration in Carbonate Reservoir

You get an introduction to wettability in a carbonate reservoirs and a view of the most used enhanced oil recovery methods.

Get it
  • Attension
Surface Free Energy - What is it and how to measure it?
White Paper

Surface Free Energy - What is it and how to measure it?

We explain the concept of surface free energy and present the most important theories behind it.

Download
  • Attension
Wettability in Li-ion batteries
Overview

Wettability in Li-ion batteries

This overview gives a short introduction to wettability in Li-ion batteries.

Get it
  • Attension
Enhanced Oil Recovery - Measuring Minimum Miscibility Pressure
Webinar

Enhanced Oil Recovery - Measuring Minimum Miscibility Pressure

Hear Professor Sandro da Rocha on how to determine the pressure at which CO2 is miscible with oil.

Go there
  • Attension
Surface Free Energy in Practice
Webinar

Surface Free Energy in Practice

We give you the reasons why to measure surface free energy and show how it is done.

Go there
  • Attension
Automated Dynamic Contact Angle Measurement with Needle Method
Video

Automated Dynamic Contact Angle Measurement with Needle Method

See the measurement in practice in this short video.

Watch
  • Attension
How do Pressure and Temperature Affect on Wettability?
Overview

How do Pressure and Temperature Affect on Wettability?

In enhanced oil recovery it is important to find out how pressure and temperature affect wettability. We show you how.

Get it
  • Attension
Enhanced Oil Recovery using Nanoparticles
Case Study

Enhanced Oil Recovery using Nanoparticles

We show you how nanoparticles can be utilized to enhance oil recovery and how contact angle measurements can be used.

Get it
  • Attension
Wettability of Contact Lenses
Overview

Wettability of Contact Lenses

Get an overview of wettability and contact angle on contact lens and an introduction to captive bubble method.

Get it
  • Attension
Attension Theta Flow demo
Demo

Attension Theta Flow demo

During this online session we will be giving you a tour of the instrument, demonstrating how to perform measurements, and providing a brief overview of the software through a pre-recorded video.
  • Attension
Adhesion - How to Use Contact Angle to Predict Adhesion and Bonding
White Paper

Adhesion - How to Use Contact Angle to Predict Adhesion and Bonding

Adhesion is important in all applications where two dissimilar materials are adhered together. Contact angle measurements can be used to predict adhesion.

Download
  • Attension
Wettability Measurements for Enhanced Oil Recovery Optimization
White Paper

Wettability Measurements for Enhanced Oil Recovery Optimization

You get an overview of the most relevant wettability measurement methods for enhanced oil recovery optimization.

Download
  • Attension
Superhydrophobic Surfaces - From Lab to Real Life Applications
Webinar

Superhydrophobic Surfaces - From Lab to Real Life Applications

Listen to Professor Robin Ras sharing his expertise on superhydrophobic surfaces.

Go there
  • Attension
Contact Angle Hysteresis and the Roll-off Angle with Tilting Method
Video

Contact Angle Hysteresis and the Roll-off Angle with Tilting Method

Find out how contact angle hysteresis and roll-off angles can be measured in practice.

Watch
  • Attension
Why Interfacial Rheology is Important
Overview

Why Interfacial Rheology is Important

Get examples on why interfacial rheology is important in various industries.

Get it
  • Attension
A Prove of Superior Coating Quality by Dynamic Contact Angle Measurement
Case Study

A Prove of Superior Coating Quality by Dynamic Contact Angle Measurement

Follow a real life example of coating development using dynamic contact angle.

Get it
  • Attension
Effect of Temperature and Pressure on Wettability of Solids
Webinar

Effect of Temperature and Pressure on Wettability of Solids

Listen to Professor Zhenghe Xu sharing his knowledge on bitumen recovery.

Go there
  • Attension
The Importance of Surface Tension in Industry
Overview

The Importance of Surface Tension in Industry

Detergents, paints, food. We give you examples to how surface and interfacial tension measurements are utilized in different industries.

Get it
  • Attension
The Importance of Contact Angle in Industry
Overview

The Importance of Contact Angle in Industry

Get examples of how contact angle measurements are utilized in different industries.

Get it