It is increasingly difficult to keep up with the blog. We are learning and doing at a rapid pace. We are glad there are three of us, as each one feels no single soul could receive, process, annotate, and use this information without someone else to fill in the inevitable blank spaces.
Chelsea fields a question concerning adhesion and adnhesion force...exactly what are those? Adhesion is measured using separation force which is measured in millinewtons through a process called "contact adhesion testing". One surface is glass of well defined properties and geometry. Bring it and another surface together at a known rate with a known force and press to a given compressive force which you determine, then pull them apart (separate them) at a given rate, get a tensile force as you separate the two, the maximum tensile force is separation force, which occurs at the point/moment of separation.
We use the inverted microscope to complete the images from Jennifer's PDMS sample made from Doug's mold. Chelsea then showed us how to use Image J for data analysis. This program can be downloaded free (google it). We need to store the information on the UMass network so all four of us (Chelsea too!) can access it. It is important to remember to open Image J and import the photographs you wish to analyze and any calibration photographs first. The next step is to set the calibration; after drawing
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment