Microscopic Contact Angle Meter - MCA-3

MCA-3-1

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

MCA-3-2

MCA-3: sample stage and 5µm glass capillary

MCA-3-3

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

MCA-3-4

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

MCA-3-5

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

  • MCA-3-1
  • MCA-3-2
  • MCA-3-3
  • MCA-3-4
  • MCA-3-5

The MCA-3 utilizes a precise electric microinjector system and a high-quality optical system for accurate contact angle measurements of microdroplets on small surface areas of only 100 x 100µm. With special capillaries available with three different inner diameters, microdroplets in a range of about 10 to 1000pL can be produced with high reproducibility. This state of the art system is equipped with an additional top-view camera that enables the deposition of droplets with pinpoint accuracy and the observation of the three-phase line and the spreading of microdroplets on solid surfaces.

Find your local contact for details and
product inquiries here  Where To Buy 

 

           

 

Top-view camera

This video below 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.

 
Features Options Applications Specifications Downloads
 
  • 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 microdroplets
  • 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 picoliter 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
 
Features Options Applications Specifications Downloads
 

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
 
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Features Options Applications Specifications Downloads
 
  • 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 microstructured areas where conventional methods and droplet volume are not applicable
 
Features Options Applications Specifications Downloads
 
MCA-3
Camera system

USB 2.0 CCD camera with: 

60fps at 640x480 pixels
Optical system

focus:

field of view:

magnification:

manual focus with a 12-fold zoom lens

75x56μm to 910x680μm ±5%

5.3 to 64 times

Measuring methods

contact angle:

surface free energy of solids:

sessile drop (static)
sessile drop (static)
Analysis methods

contact angle: 

surface free energy of solids: 

θ/2, tangent, curve fitting (ellipse, circle)
Owens-Wendt, Kaelble-Uy, Kitazaki-Hata, Wu, acid-base, Zisman
Measuring range

contact angle:

0.01 to 180°
Resolution

contact angle:

0.01°
Accuracy 1)

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 hydraulical micromanipulator
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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Features Options Applications Specifications Downloads
 
  • Specification sheet
  • Catalog


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