Contact Angle, Liquid Surface Tension, Surface Free Energy

DMo series

Product lineup
DMo-902
Fully automated computer-controlled contact
angle measuring system with 150x150mm 360o
rotation stage• Computer-controlled rotation stage with XY translation and rotation
axis, and computer-controlled camera and dispenser unit with Ztranslation• Fully automated mapping sequence (droplet generation → droplet
deposition → droplet analysis → stage movement) over the entire
150x150mm 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 allows 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

DMo-702
Fully automated computer-controlled contact
angle measuring system with 150x150mm stage• Computer-controlled stage with X translation and computercontrolled camera and dispenser unit with Z translation• Automated measurement sequence (droplet generation → droplet
deposition → droplet analysis → stage movement) in X-direction
is possible by pre-setting commands• The automatic dispenser unit generates droplets with high accuracy
and assures precise measurements of advancing and recedingangles 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 underconsistent conditions

DMo-602
Computer-controlled analysis of static anddynamic contact angles with 150x150mm stage• Manual XY sample stage and computer-controlled camera anddispenser unit with Z translation• Automated measurement sequence (droplet generation → droplet
deposition → droplet analysis) is possible by pre-settingcommands• 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• The precise manual sample stage is adjustable to the desired
position, and the dispensing unit allows for a quick and easy
exchange

DMo-502
Computer-controlled analysis of static anddynamic contact angles with 150x150mm stage• Manual XY sample stage and manual camera and dispenser unit in
Z-axis• The precise manual sample stage is adjustable to the desired
position, 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

Standard features for all models•••••

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 drop
volume, 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 150x150mm wide sample stage with a maximum load capacity(temperature chamber + sample) of 1.4 kg.
Stage travel distance: X-axis 150mm, Y-axis 75mm
* DMo-902 and DMo-702 are equipped with a motorized sample stage
Possibility to mount temperature control chambers onto the stage* The applicable sample size for the temperature control chamber is about 150x75mm••

Standard components of individual models
DMo-902

DMo-702

DMo-602• Motorized camera anddispenser unit (z-axis)
and motorized stage in
X, Y, and rotation axes
• Automatic single
dispenser• Control box• Motorized camera anddispenser unit (Z-axis)
and motorized stage in
X-direction• Automatic single
dispenser• Control box• Motorized camera anddispenser unit (Z-axis)• Automatic single
dispenser• Control box

Common accessories
for all models

DMo-502• Automatic single
dispenser, incl.
dispenser controller• Manual single dispenser• Syringe set 22G (5x each/set)• Teflon-coated needles
18G, 22G (2x each)• Standard droplet sample(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•••

Droplet calibration standard(standard view)

Droplet calibration standard(wide view)

Measuring process

DMomodelPositioning of firstmeasurement point502▲by rotary knob

●

▲ / ●

●

▲

▲

602

▲by rotary knob

●

● / ●

●

▲

▲

702

▲by command button

●

● / ●

●

●

▲

902

●

●

● / ●

●

●

●

● automatic ▲ manual

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

150x150mm fullscale continuous
measurements

Specifications
DMo-902

DMo-702

DMo-602

DMo-502

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

150(W)x150(D)x16(H)mm

Measuring methods

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

Measuring temperature

150(W)x150(D)x35(H)mm

150mm (automatic)
75mm (automatic)--360° (automatic)

150mm (automatic)
75mm (manual)-----

16mm (automatic)
automatic
0.1μl
ambient only

standard:
optional:

Instrument dimensions
Instrument weight

8.5kg1)
2)

8.5kg

290(W)x240(D)x100(H)mm
4.3kg

35mm (manual)automatic
0.1μl

4.3kg

7.5kg
260(W)x200(D)x70(H)mm

4.3kg

AC100 to 240V, 50/60Hz
60W, 125VA

Power supply
Operating environment

35mm (automatic)
automatic
0.1μl
ambientjacket type temperature-controlled (+5 to +90C)
heater type temperature-controlled(ambient to +180C and ambient to +380C)297(W)x544(D)x305(H)mm

10.0kgControl box dimensions
Control box weight

150mm (manual)
75mm (manual)
-----

1.6kg
AC100 to 240V, 50/60Hz
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 series can quickly adapt to meet customers’ requirements for special applications. In addition, we offer a wide range ofoptional accessories such as a jacket and heater-type temperature-controlled sample stages and chambers, a heater-type temperature-controlled
dispenser, an external tilting stage for roll-off angles, and a particular module for measurements of roll-off speed and roll-off acceleration.
Customized solutions are also possible, such as specially designed sample stages for measurements on cylindrical samples with large diameters or
human arms and legs.
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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