Why are contact angle systems used for evaluating cleanness of solid surfaces?

Solid materials like metals and glasses generally have large surface free energy (the Υs should be large) and water droplets on those materials should form a small contact angle. On the other hand, when the solid surface is contaminated with organic materials, water droplet will form a larger contact angle. The contact angle is sensitive enough to show different results even with a small amount of contamination such as mono-layer orders.


Acam Series standard specification (without Add-on)


Acam-NSC

Contact Angle measurement 0°-180° with an Accuracy of ±0.05°

High Speed USB connectivity

Horizontal Camera Assembly with Integrated Fine Focus

High Performance C-Mount CCD with Infra-red Cut Filter

Aberration Corrected High Magnification Lens

Max Frame rate : 75 fps

Image resolution (at max frame rate) : 744 X 480 Pixels

Magnification : 5X

LED based Lighting with Hysteresis Free Illumination

Software controlled illumination : Not Available

Substrate Stage Dimension [L X W (in mm)] : 150 X 100

Substrate Stage Z-axis Movement : Up to 30 mm (can be customised)

Precise level adjustment by four adjustable levelling screws

Precision Dispensing Module


Acam-MSC

Contact Angle measurement 0°-180° with an Accuracy of ±0.05°

High Speed USB connectivity

Horizontal Camera Assembly with Integrated Fine Focus

High Performance C-Mount CCD with Infra-red Cut Filter

Aberration Corrected High Magnification Lens

Max Frame rate : 200 fps

Max Image resolution : 1280 X 1024 Pixels

Magnification : 5X

LED based Lighting with Hysteresis Free Illumination

Software controlled illumination : Available

Substrate Stage Dimension [L X W (in mm)] : 150 X 100

Substrate Stage Z-axis Movement : Up to 30 mm (can be customised)

Precise level adjustment by four adjustable levelling screws

Precision Dispensing Module


Acam-HSC

Contact Angle measurement 0°-180° with an Accuracy of ±0.05°

High Speed USB connectivity

Horizontal Camera Assembly with Integrated Fine Focus

High Performance C-Mount CCD with Infra-red Cut Filter

Aberration Corrected High Magnification Lens

Max Frame rate : 500 fps

Image resolution (at max frame rate) : 648 X 488 Pixels

Magnification : 5X

LED based Lighting with Hysteresis Free Illumination

Software controlled illumination : Available

Substrate Stage Dimension [L X W (in mm)] : 150 X 100

Substrate Stage Z-axis Movement : Up to 30 mm (can be customised)

Precise level adjustment by four adjustable levelling screws

Precision Dispensing Module


Acam Series Add-on Modules and Features

Stage Heating Module : Up to 200°C by Heating Jacket Module or by Liquid Circulating Jacket Module

Stage Movement Module : Movement of Substrate Stage in XZ Directions or XYZ Directions

Zoom Lens Module : Zooming Facility up to 10X

Auto-dispensing Module : Liquid Dispensing with a Programmable Volume & PC-controlled Dispensing Speed Range of 0.038 - 16 μl/sec.

Dyne+ Module : Contact Angle Analysis in Dynamic Mode with Continuous Capturing & Saving of Multiple Images for the Study of Time-dependent Changes in Contact Angle along with the Continuous Measurement Option of Volume, Height & Width of the Droplet having High Quality .avi Video Recording & Loading Provision

Preced+ Module : Measurement & Display of Preceding & Receding Contact Angles [both in Continuous & Discrete Mode] with Contact Angle Hysteresis Calculation

Tilt+ Module : Substrate Stage Tilting along with Tilting Angle Analysis & Contact Angle Hysteresis Calculation

ProgTilt+ Module : PC-controlled Substrate Stage Tilting up to 90° with a Tilting Speed Range of 0.05° - 9°/sec. & a Resolution of 0.0025° along with Tilting Angle Analysis & Contact Angle Hysteresis Calculation

Tense+ Module : Surface Tension of Liquid Calculation by Pendant Drop Method & N-L Method for High Viscous Liquids with a Measurement Range up to 1,000 mN/m

Surfen+ Module : Surface Free Energy of Solid Measurement based on the Contact Angle of Multiple Known Liquids, Geometric Mean Method & Contact Angle Hysteresis Method


Related Instruments

How it works Learn more about the Contact Angle Measurement technology in the Technology Info tab

 

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