DCAA-101Wetting & interface behavior

Dynamic Contact Angle Analyzer

Use repeatable optical observation to understand how droplets, bubbles and material surfaces meet.

  • Automated droplet / bubble dosing and sample positioning
  • Dynamic contact-angle analysis: advancing, receding and roll-off angles
  • Automated image recognition and fitting analysis
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Dynamic Contact Angle Analyzer editorial product visual

DCAA-101 product overview

Product introduction

A contact-angle measurement instrument for analyzing material-surface wetting performance and interfacial behavior. It characterizes the dynamic and static contact states of liquids or gases on solid surfaces.

Product functions
  • Gas / liquid contact-angle measurement
  • Roll-off, advancing and receding angle measurement
  • Real-time recording of bubble contact angle
  • Automated bubble / droplet injection
  • Automated image recognition and fitting
  • Automated sample positioning
Application areas
  • Electrode materials
  • Functional coatings
  • Material modification

From a static angle to the full wetting process

A static contact angle captures the interface at a single moment. Advancing, receding and roll-off behavior on the surface makes up the full wetting process — the states DCAA-101 characterizes.

How contact angle is measured

Optical imaging records how a liquid or gas sits on a solid surface: liquid-in-air (CAL) and bubble-in-liquid (CAB) contact angles are both measurable; the dynamic process covers advancing, receding and roll-off angles.

DCAA-101 contact-angle measurement principle diagram
Contact-angle measurement principle

The instrument: from full system to injection components

The full system integrates imaging, injection and sample positioning; the injection and sample components support automated bubble / droplet dosing.

Full-instrument demo: auto-focus, edge detection and sample positioning
Original DCAA-101 instrument photograph
Original instrument photograph
DCAA-101 injection and sample component detail photograph
Injection and sample component detail

See the same measurement in motion

The roll-off-angle example marks the tilt at which the droplet starts to move; the video records the same measurement in motion, and the software shows automated recognition and fitting.

Roll-off-angle measurement demo
DCAA-101 roll-off-angle source image
Roll-off-angle example
DCAA-101 gas contact-angle detection interface: baseline recognition and angle fitting results
Automated gas contact-angle detection

Where it is used

Used to evaluate surface wettability and bubble / droplet interface behavior across electrode materials, functional coatings and material modification studies.

  • Electrode materials
  • Functional coatings
  • Material modification
06Original PPT material archive4 items · expand

Remaining reference images from the original layout files: device information sheet, sample stage and observation area, bubble and droplet contact-angle examples.

DCAA-101 device information sheet
Device information sheet
DCAA-101 sample stage and observation area
Sample stage and observation area
DCAA-101 bubble contact-angle source image
Bubble contact-angle example
DCAA-101 liquid contact-angle source image
Liquid contact-angle example

DCAA-101 full product poster

The content above restructures the poster information for the web; below is the full product poster.

Dynamic Contact Angle Analyzer full product poster
Open full-size poster