In this study, a smartphonebased contact angle measurement instrument was developed. Innovative development from 2d to 3d contact angle new application for contact angle hysteresis phenomenon improving the measuring accuracy of contac angle and surface free energy. Ic measure manual onscreen image measurement and image. Free software for high precision contact angle measurement. Compared with the traditional measurement instruments, this instrument has the advantage of simplicity, compact size, and portability.
Needle method is the first one of the optical methods. All of these need special ways to measure contact angle. Contact angle measurement combines high technology test instrumentation and a nondestructive testing method to allow an accurate, objective and repeatable analysis to be made. The convenient user interface enables the easy measurement of lengths, angles and surfaces directly from the image displayed on the monitor. Dinolite usb microscope cameras include dinocapture 2. Contactangle is a small, easy to use application specially designed to help you extract contact angles from videos of liquid droplets on a surface. Contact angle measurements using the drop shape method.
Use any edition of dropimage software to measure contact angle on reflective surfaces. Contact angle measuring instrument dsa100 measurement with nicely deposited drops keywords. The angle formed at the boundary of the droplet is the contact angle, which characterizes a surfaces wettability. The sca 20 module is the base software module that enables the measurement of contact angles. The contact angle is measured using the image of a sessile drop at the points of intersection threephase contact points between the drop contour and the projection of the surface. Angle measurement cnet download free software, apps. Application notes and software about contact angle meter.
If the contact angle is less than 90 it is said that the liquid wets the surface, zero contact angle representing complete wetting. Tips for measuring contact angle on reflective surfaces. Oca optical contact angle measuring and contour analysis. This emphasizes the point that contact angle measurement uncertainty is almost entirely due to baseline uncertainty. In surface science, an instrument called a contact angle goniometer is used to measure static contact angle, advancing and receding contact angle, and in some cases, surface energy. Dynamic contact angle measurements quantify contact angle hysteresis the difference between advancing and receding contact angles, rolloff angle and absorption which can. Typical contact angle measurement of droplets on a leveled surface. Notice there is no way to calibrate contact angle data. Measurements in static and dynamic mode in time function are available.
Dinocapture is a professional microscope imaging software that was made for users of all levels, including basic features from image viewing and capture, measurement with calibration, to advanced features such as geotags and edge detection. Lowbond axisymmetric drop shape analysis for surface tension and contact angle measurements of. The integrated pump delivers accurate droplets in steps of 0. Phenomenon like spreadability, absorption, adsorption, dissolution can be studied by contact angle measurement devices. Download onscreenprotractor easily measure angles of any area on your desktop through a fully transparent window you can position over blueprints and designs. Surftens is a windows image processing software for measurement of contact angle of liquids on solids. Dataphysics sca 20 oca control software 2000248 lab. Computer software drop shape analysis gives contact angle without operator. Contact angle measurement software ca measure tool. A patented half angle measurement method eliminates the difficulties associated with tangent angle measurement methods. This plugin calculates the contact angle of a drop on a flat surface using the sphere approximation theta2atan2hl and the ellipse approximation. Contact angle measurement is the preferred and most accurate method of much vital laboratory measurement and research for determining the interactions at the solidgasliquid interface.
The contact angle plugin is designed to provide angles for images with the droplets upside down. Oeg optical metrology, image processing, software development gmbh. The publisher may provide downloads in the future or they may be available. Measure length, area, angle and circumference on images with image measurement download free trial. Quick tutorial on using imagej to process contact angle data. Using the contact angle meter you can compare the effects of a range of surface treatments and gather data that correlates to various surface conditions e. The force acting in the tensile direction when moving a plateshaped solid vertically in a. Contact angle hysteresis cannot be measured directly but through the measurement of advancing. With the attension sigma force tensiometer, the wilhelmy method can be used to define dynamic contact angles. Measure the contact angle of the drop in the image e. Contact angles are measured by fitting a mathematical expression to the shape of a. All the methods are measuring advancing and receding contact angles which are used to calculate contact angle hysteresis. Contact angle hysteresis arises from the chemical and topographical heterogeneity of the surface, or swelling, rearrangement or alteration of the surface by the solvent. All of these methods have their pros and cons which makes some more suitable for certain types of substrates and applications.
Originally the program was conceived to assess the angle between north and a given point on any map open on the screen, therefore the background of the application window is transparent and the angle is measured from the positive yaxis and clockwise. A bespoke contact angle measurement software and experimental. The advancing contact angle can be described as a measure of the liquidsolid cohesion while the receding contact angle is a measure of liquidsolid adhesion. Simple and lowcost contact angle measurements using a. Measurements can be taken using live or still images and is designed for both macroscopic and microscopic measurement tasks. What is the difference between static and dynamic contact angles. This system is established with the contact angle and surface tension measurement experiment which is based on foxzisman theory. Contact angle measurement equipment uk dyne testing. When the 10day period is over, you can decide if you wish to buy one of the three versions of image measurement standard, professional or scientific. You can take picture of any object that you would like to measure, for example, a car, road, house, stairs or a mountain, the protractor is transparent, after you uploaded the image, it will be display in the background.
The solid surface is attached to a balance hook and is immersed in a test liquid to calculate the advancing contact angle. Ic measure contains many measurement tools, including tools for the measurement of lengths, angles, circles and polygons. Ic measure measure onscreen lengths, angles, circles. Our comprehensive software for contact angle measurement. Static contact angle measurement involves the placement of microliter sized droplets on a sample surface.
In fact people often perform contact angle measurements, by applying the. Angle measurement software free download angle measurement top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Contact angle measurement for ios free download and. Measurement software free download measurement top 4. Advance is an example of how even the most complex measuring tasks, such as determining the. Contact angle measurement with sca 20 sca 21 surface energy with the sca 21 software module the surface energy of solids can be determined by measuring multiple contact angles with different liquids. The optional software driven automated dispensing system is supported on all models. The softwarecontrolled, electrically driven optic alignment enables the oca 200 to adjust the observation angle and to focus automatically. The oca 200 is the contact angle measuring and drop contour analysis system for microscopic and macroscopic structures. Reliable surface energy measurement and a number of easytouse features make the cheminstruments camplus contact angle meter an ideal testing machine. New, innovative software advance drop shape for contact angle measurement intuitive user interface, powerful video analysis and a wide range of functions with advance drop shape, we have developed a new, innovative software package for measuring contact angle. Klonk image measurement, free, software, tool, image. Dsa100, dsa30, dsa25, msa, mobiledrop wilhelmy plate method.
Contact angle is a simple and yet powerful tool for characterizing threephase junctions. In the video we note that the snap feature is not the best tool. Interfacial chemistry measurement system c60 click to download. Front panel iv curve usb drivers and labview library. The advancing and receding contact angles can be measured directly using different methods and can also be calculated from other wetting measurements such as force tensiometery aka. Download scientific diagram contact angle measurement software ca measure tool.
Contact angle hysteresis is a difference between advancing and receding angles. New, innovative software advance drop shape for contact. Measurement software free download measurement top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Actually, material such as fiber especially measuring contact angle between resin and single fiber, or single fiber with superhydrophobic surface, powder with contact angle above 80. Free software for high precision contact angle measurement the software is based on a plugin for imagej, a general purpose free imageprocessing package. From the figure below, it can be seen that the low contact angle values indicate that the liquid spreads. Procedure to measure the contact angle of a liquid drop using imagej with contact angle plugin. New, innovative software advance drop shape for contact angle measurement intuitive user interface, powerful video analysis and a wide range of functions with advance drop shape, we have developed a new, innovative software package for measuring contact angle and determining surface free energy sfe. You can measure both the length, area, circumference or angle of an object with image measurement. The downloaded version will work as klonk image measurement scientific in the first 10 days of usage. The necessity to have a selfdeveloped software comes by considering that. Drop shape analyzer dsa100 with our advance software is a very good example in this respect.