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  5. MCA-3

MCA-3

MCA-3

MCA-3: main instrument incl. microinjector system, control boxes and observation monitor

MCA-3

MCA-3: sample stage and 5µm glass capillary

MCA-3

MCA-3: contact angle measurement of water on a human hair

MCA-3

MCA-3: sample stage with optional ink jet head system

MCA-3

MCA-3: top view observation of a water drop on a printed circuit board

MCA-3
MCA-3
MCA-3
MCA-3
MCA-3

Top-view camera

This video shows how the top-view camera helps to deposition the droplets with a glass capillary with 5µm inner diameter with pinpoint accuracy onto measuring points of a circuit inside a ROM and of a read-write head of a hard disk.

The two videos below show that besides the pinpoint deposition of the droplets the top-view camera can also be used for the observation of the three-phase contact line of the droplets. Here, droplets are deposited inside 100µm wide cells of an OLED panel. As the height of the cells' walls does not allow direct measurements of the contact angle from the side, the top-view camera helps to evaluate the surface cleanliness by observing the spreading behavior of the droplets on the solid surface.

  • Automatic recognition of drop deposition by FAMAS analysis software
  • Top view camera allows for deposition of droplets with pinpoint accuracy and for observation of the spreading of micro-droplets
  • The high magnification lens and a 12-fold zoom provide a field of view from approximately 75x56µm to 910x680µm
  • Fine adjustable micro stage in x-, y- and z-axis for exact positioning
  • Fast image capture system allows accurate measurements of even quick evaporating pico-liter droplets
  • Droplet calibration standard bearing three sets of one full circle for calibration and three droplet silhouettes of 5°, 60° and 108° for periodic inspection of measurement accuracy

Hardware

  • Software-controlled micro-stage
  • Jacket type sample stage for temperature measurements from +10 to +70°C
  • Inkjet head system, using piezoelectric technology to generate droplets from about 8 to 60pL
  • Miniaturized areas such as of silicon wafer, OLED panels, electronic components, printed circuit boards, etc.
  • Very thin wire materials such as single fibers, hairs, filaments, etc.
  • Defined locations on the surface of tiny samples
  • Ink at very small droplet volume (emitted from an ink-jet head)
  • Other or micro-structured areas where conventional methods and droplet volume are not applicable
  MCA-3
Camera system USB 3.0 CCD camera with: 125fps at 640x480 pixels
200fps at 640x278 pixels
333fps at 640x136 pixels
Optical system focus: manual focus with a 12-fold zoom lens
field of view: 75x56μm to 910x680μm ±5%
magnification: 5.3 to 64 times
Measuring methods contact angle: sessile drop (static and dynamic)
Analysis methods contact angle: θ/2, tangent, curve fitting (ellipse, circle)
surface free energy of solids: Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman
Measuring range contact angle: 0.1 to 180°
Resolution contact angle: 0.1°
Accuracy1) contact angle: 0.5°
Maximum sample surface area and height (WxDxH) 50x25x5mm

Sample stage operation:
X-axis
Y-axis
Z-axis
manual
25mm
25mm
15mm
Dispenser operation:
X-axis
Y-axis
Z-axis
Droplet generation
Air supply pressure
three-dimensional manual manipulator
30mm
30mm
30mm + 10mm hydraulic micro-manipulator
automatic
0.4 to 0.7 Mpa
Dimensions (WxDxH) of:
Main instrument
Rack for control boxes
Installation area

550x620x700mm
420x320x323mm
1000x650x720mm
Approximately weight of:
Main instrument
Control box

50.0kg
15.0kg
Electric power:
Voltage
Frequency
Power consumption

AC100-240V
50/60 Hz
60W 125VA
Operating environment temperature: +10 to +35°C, humidity: 30-80%RH (non-condensing)
positioned away from sources of electrical noise and vibration

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

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