Profile Analysis Tensiometers
Advanced instruments for surface and interfacial characterization.
Advanced Measurement Module
ODBA-1M
Oscillating Drop and Bubble Analysis.
The ODBA-1M is an advanced measurement module for the PAT-1M. By combining direct capillary pressure measurements with controlled oscillations of drops and bubbles, the module enables precise characterization of dynamic interfacial rheological properties.
0.001–100 Hz
Oscillation frequency
1–1000 mN/m
Surface & interfacial tension
PAT-1M
Compatible platform
The ODBA-1M module
Extend the PAT-1M into high-frequency interfacial rheology.
The ODBA-1M is an additional module developed for the PAT-1M. It combines direct capillary pressure measurement with controlled oscillations of pendant drops and buoyant bubbles to investigate dynamic surface and interfacial properties.
A piezo-driven piston produces harmonic expansion and contraction of the interfacial area. The resulting response of the surface or interfacial tension provides access to the dilatational elasticity and viscosity of the investigated interface.
Measurement capabilities
Advanced oscillating drop and bubble analysis.
Explore the experimental capabilities of the ODBA-1M.
Direct determination of the capillary pressure across the interface provides the basis for accurate dynamic surface and interfacial tension measurements.
Controlled oscillations of pendant drops and buoyant bubbles enable the investigation of interfacial response over a broad frequency range.
Determine the dilatational elasticity and viscosity of liquid interfaces from the relationship between interfacial deformation and surface tension response.
Investigate dynamic interfacial processes from very slow to high-frequency oscillations within a single experimental platform.
Integrated data evaluation determines the amplitude and phase relationship required for calculating interfacial viscoelastic properties.
Monitor the relaxation behaviour of surface and interfacial layers after controlled perturbation to study adsorption and structural dynamics.
Performance
Technical performance at a glance.
Key operating parameters and measurement capabilities of the ODBA-1M.
0.001–100 Hz
Oscillation frequency
Controlled harmonic oscillations over a broad frequency range for advanced interfacial rheology studies.
1–1000 mN/m
Surface & interfacial tension
Pressure-based determination of dynamic surface and interfacial tension across a wide measurement range.
±0.1 mN/m
Measurement resolution
High-resolution capillary pressure measurement for precise characterization of dynamic interfaces.
0.0004 µl
Volume oscillation
Piezo-driven volume modulation enables highly reproducible deformation of drops and bubbles.
Values may depend on configuration, measurement mode and optional modules.
Measurement principle
From capillary pressure to interfacial rheology.
The ODBA-1M determines the capillary pressure across a pendant drop or buoyant bubble using a high-precision pressure sensor. A piezo-driven piston generates harmonic oscillations of the drop or bubble volume, resulting in controlled changes of the interfacial area. The corresponding surface or interfacial tension response is analysed in amplitude and phase to determine the dilatational elasticity and viscosity of the interface.
Pressure measurement
Direct capillary pressure
Interface excitation
Piezo-driven oscillations
Scientific evaluation
Elasticity & viscosity
Compatible instrument
Developed for the PAT-1M platform.
The ODBA-1M is designed as an additional measurement module for the PAT-1M. It integrates with the instrument’s optical system, dosing architecture and control environment to extend the platform into pressure-based oscillating drop and bubble analysis.
Applications
Supporting advanced interface research.
The ODBA-1M enables detailed investigation of dynamic interfacial phenomena across a wide range of scientific disciplines. Its oscillating drop and bubble technique provides valuable insight into the viscoelastic behavior of complex liquid interfaces.
Scientific publications
Research
Publications and scientific references related to interface characterization.
Used in advanced interface science.
The oscillating drop and bubble technique has been applied in numerous scientific studies covering interfacial rheology, adsorption kinetics, surfactant systems and dynamic surface phenomena. Explore publications using ODBA-1M and related measurement methods.
Our publication database identifies verified studies performed with SINTERFACE instruments.
Technical information
Detailed performance and system specifications.
Explore the measurement capabilities, optical setup, operating modes and physical specifications of the ODBA-1M module.
Pendant drop measurements
Buoyant bubble measurements
Surface tension measurements
Interfacial tension measurements
Dilational elasticity
Dilational viscosity
Automatic drop volume control
Automatic drop area control
Drop and bubble oscillations from 0.001 to 100 Hz
Surface and interfacial tension
- Measurement range
- 1–1000 mN/m
- Resolution
- ±0.1 mN/m
Oscillation
- Frequency range
- 0.001–100 Hz
- Excitation
- Piezo-driven volume and area oscillation
Optics and imaging
- Optical platform
- PAT-1M
- Standard image acquisition
- 25 images/s at 1280 × 1024 px
- High-speed image acquisition
- 100 images/s at 640 × 480 px
Pressure chamber
Piezo drive
Pressure sensor
Capillary system
Syringe-pump dosing system
Liquid reservoir
Control valve
Electronic control unit
Internal connection to the PAT-1M
Real-time acquisition of surface and interfacial tension
Real-time acquisition of pressure, radius, area and volume
Drop and bubble image monitoring
Pressure sensor calibration
Camera calibration and focusing
Control of oscillation frequency and amplitude
Constant volume and constant area control
Programmable experimental timelines
Fourier analysis of oscillation data
Calculation of dilatational elasticity and viscosity
Export of experimental data
Dimensions
- Electronic unit
- 300 × 280 × 100 mm
- Measurement unit
- 200 × 80 × 112 mm
System data
- Weight
- 6 kg
- Power supply
- External 100–240 VAC to 24 VDC
- Power consumption
- 55 W
- Compatible platform
- PAT-1M
Capillaries
Specifications may vary depending on configuration, software version and optional modules.
Downloads
Documentation and technical resources.
Access operating instructions, technical information and supporting documentation for the ODBA-1M Oscillating Drop and Bubble Analyser.
Additional manuals and software downloads are available through the SINTERFACE customer portal.
Visit download centerODBA-1M
Extend the PAT-1M with oscillating drop and bubble analysis.
Discuss your interface, required frequency range and experimental configuration with our specialists. The ODBA-1M is available as an integrated module for the PAT-1M platform.
Application consultationConfiguration supportGlobal technical assistance