Contact Angle, Liquid Surface Tension, Surface Free Energy

DMo-WA series

Product lineup
DMo-902WA
Fully automated computer-controlled contact
angle measuring system with dia. 335mm 360°
rotation stage• Rotation sample stage with computer-controlled X-translation androtation axis
• Camera/dispenser unit with computer-controlled Z translation• Fully automated mapping sequence (droplet generation → droplet
deposition → droplet analysis → stage movement) over the entire
dia. 305mm stage area is possible by pre-setting coordinates• The optional multi dispenser system of up to five liquids allows for a“one-click” fully automated analysis of the surface free energy• The optional high-capacity dispenser for one liquid provides for fully
automated measurement of contact angles for applications withhigh liquid volume requirements• The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time, ensuring reliable results underconsistent conditions• Scales along the outer edge of the rotation stage and the X-axis
help to determine mapping positions

DMo-702WA
Fully automated computer-controlled contact
angle measuring system with manual dia. 335 mm
360°rotation stage• Rotation sample stage with computer-controlled X translation andmanual rotation axis
• Camera/dispenser unit with computer-controlled Z translation• Automated measurement sequence (droplet generation → droplet
deposition → droplet analysis → stage movement) in X-direction ispossible by pre-setting commands• The automatic dispenser unit generates droplets with high accuracy
and assures precise measurements of advancing and receding angles
through its constant volumetric flow rate
• The optional multi dispenser system of up to five liquids allows for a“one-click” fully automated analysis of the surface free energy• The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time, ensuring reliable results under consistentconditions• Scales along the outer edge of the rotation stage and the X-axis help todetermine mapping positions

DMo-502WA
Automated computer-controlled contact angle
measuring system with manual dia. 335 mm
360°rotation stage• Rotation sample stage with manual X and rotation axis
• Camera/dispenser unit with manual Z-axis• The precise manual sample stage is adjustable to the desiredposition, and the dispensing unit allows for a quick and easy
exchange• The automatic dispenser unit generates droplets with high accuracy
and assures precise measurements of advancing and recedingangles through its constant volumetric flow rate
• The automatic recognition of droplet deposition enables droplet
analysis after a pre-set time, ensuring reliable results underconsistent conditions• Scales along the outer edge of the rotation stage and the X-axis
help to determine mapping positions.

Standard features for all model••••••USB 3.0 camera for fast image processing with 400 fps at 640x480 pixel full resolution and a maximum of 2700fps at 640x64 pixel.
Focusing aid with an index graph and the value displayed in the image screen helps operators achieve perfect focus.
Movie converter converts data images to MPEG-1 or AVI movie format
The black & white threshold level to determine the binary image can be adjusted before and after measurement to optimize droplet analysis.
During analysis of the sessile drop, besides the contact angle data, the FAMAS software determines the droplet volume, sessile dropvolume, absorbed droplet volume, residual droplet ratio, height, and radius of the sessile drop.
A spreadsheet-like table displays the measured results for easy reference and comparison.
.

Sample stage••••All models offer a particular rotary stage for disk-like samples like wafers with a diameter of up to 300mm
Maximum load capacity of 400g
150mm stage travel distance in the x-axis and 360° stage rotation allow mapping in a radial pattern* DMo-702WA is equipped with a motorized X-axis* DMo-902WA is equipped with a motorized X-axis and a motorized rotary stage
Scales along the outer edge of the rotation stage and the X-axis help to determine mapping positions

Standard components of individual models
DMo-902WA

DMo-702WA

Common accessories
for all models

DMo-502WA• Motorized camera and dispenser • Motorized camera and dispenser
unit (Z-axis) and motorized stage
unit (Z-axis) and motorized stage
with X translation and rotation-axis
with X translation• Automatic single dispenser• Automatic single dispenser• Control box• Control box• Automatic single dispenser, incl.
dispenser controller• Manual single dispenser• Syringe set 22G (5x each/set)• Teflon-coated needles
18G, 22G (2x each)• Droplet calibration standard(standard view)

Droplet calibration standard••••

The droplet calibration standard for the standard view is a basic accessory for all models
The soda-lime glass slide bears one full circle for calibration and three droplet silhouettes of 5°,60°and 108° for periodic inspections of measurement accuracy
With the help of this tool, users can efficiently perform routine maintenance to ensure the reliabilityof their measurements over long periods
An additional droplet calibration standard for calibration of the camera wide-view setting andpendant drop calibration standards for standard and wide-view settings are available
Upon request, we issue traceable certificates of the accuracy of the full circle and droplet silhouettes

Standard droplet sample(standard view)

Droplet calibration standard(wide view)

Measuring process

DMomodelPositioning of firstmeasurement point

Generation of droplet Deposition of droplet Analysis of droplet Positioning of next(control/recognition)measurement point

Full-scalecontinuous
measurements

902WA

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702WA

▲by command button●● / ●●●▲

502WA▲by rotary knob

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▲ / ●

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▲

▲

● automatic ▲ manualApplications•••

Surface cleanliness and homogeneity after cleaning processes (typically for removal of organic contamination)
Surface properties such as wettability and adhesion of modified surfaces and thin film coatings
Dynamic wetting and de-wetting properties in immersion lithography processes using the roll-off method with an external tilting stage or byincreasing and decreasing the droplet’s volume

Specifications
DMo-902WA

DMo-702WA

DMo-502WA

USB 3.0 CMOS camera with:
Camera system

Optical system

400 fps at 640x480 pixels
500 fps at 640x400 pixels
1000 fps at 640x200 pixels
2700 fps at 640x64 pixels
manual focus with a 3-step manual optical zoom of 2.6x
field of view: 6.1 x 4.7mm, 11.1 x 8.2mm, 15.8 x 11.8mm ±6%
contact angle:
surface/interfacial tension:
surface free energy of solids:

sessile drop (static), advancing/receding angle (dynamic)
sliding angle (dynamic)1)
pendant drop (static and dynamic)
sessile drop (static)

Analysis methods

contact angle:
surface/interfacial tension:
surface free energy of solids:

/2, tangent, curve fitting (ellipse, circle), Young-Laplace
Young-Laplace, ds/de
OWRK, Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman

Measuring range

contact angle:
surface/interfacial tension:

0 to 180
0 to 2000mN/m

Resolution

contact angle:
surface/interfacial tension:

0.01
0.01mN/m

Accuracy2)

contact angle:
surface/interfacial tension:

0.2
0.2mN/mMaximum sample size

diameter 300 mm

Maximum sample weight

400g

Measuring methods

Sample stage operation
X-axisY-axisZ-axisRotation axisDispenser operation
Z-axis (droplet deposition)
Droplet generation
Dispensing resolution

150mm (automatic)----360°(automatic)
35mm (automatic)
automatic
0.1μl

ambient

Instrument dimensions

375(W)x684(D)x432(H)mm

Control box dimensions

12.5kg

11kg
290(W)x240(D)x100(H)mm

Control box weight
Power supply
Operating environment2)

150mm (manual)----360° (manual)
35mm (manual)automatic
0.1μl

Measuring temperature

Instrument weight1)

150mm (automatic)----360° (manual)

10kg
260(W)x200(D)x70(H)mm

4.3kg

1.6kg

AC100 to 240V, 50/60 Hz60W 125VA

AC100 to 240V, 50/60 Hz
25W 103VA

temperature: +10 to +35C, humidity: 30 to 80%RH (non-condensing)positioned away from sources of electrical noise and vibration

Optional
Accuracy is the repeatability in terms of standard deviation based on the manufacturer’s calibration standard

Optional accessories and customized solutions
The KYOWA DropMaster Wafer series quickly adapts to meet particular customers’ requirements for special applications. In addition, we offer a wide
range of optional accessories, such as automatic multi-dispenser systems, a high-capacity pump dispenser system, an external tilting stage for roll-off
angles, and a particular module for roll-off speed and roll-off acceleration.
For detailed information, please get in touch with our sales partner or us directly at +81-48-483-2629 or overseas-sales@face-kyowa.co.jp.
Specifications and designs are subject to change without notice.

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