Symposium

Department of Physics and Astronomy

Cindi Seal

Professor Weidian Shen, Sponsor

Evaluation of Adhesion of Ink Deposited on Plastic Film Using Nano-Indenter and Scanning Probe Microscope

Plastic packaging is used widely, especially in the food industry due to its microwaveability. Virtually every package is printed with ink. The adhesion of ink on plastic therefore merits increasing attention to ensure quality packaging. We will present a new technique developed in our Nanotribology Lab to evaluate the adhesion strength of ink deposited on plastic films using a Nano-indenter and a Scanning Probe Microscope, which shows great promise so that we can acquire an objective quantitative evaluation.

Session C - Gallery II - 12:15 p.m.~12:30 p.m.

Jon P. Trochet

Professor Diane Jacobs, Sponsor

Building an AC/DC Power Supply

AC/DC power supplies are electronic devices used in virtually every electronics lab. This device features AC and DC outputs commonly used in undergraduate physics and electronic lab work. The output is fully protected from short circuits and there are safety grounding circuits to protect the user. I will discuss the construction of the power supply as well as how the device works.

Session A - Tower Room - 9:30 a.m.~9:45 a.m.


			Department of Physics and Astronomy Cindi Seal Professor Weidian Shen, Sponsor Evaluation of Adhesion of Ink Deposited on Plastic Film Using Nano-Indenter and Scanning Probe Microscope Plastic packaging is used widely, especially in the food industry due to its microwaveability. Virtually every package is printed with ink. The adhesion of ink on plastic therefore merits increasing attention to ensure quality packaging. We will present a new technique developed in our Nanotribology Lab to evaluate the adhesion strength of ink deposited on plastic films using a Nano-indenter and a Scanning Probe Microscope, which shows great promise so that we can acquire an objective quantitative evaluation. Session C - Gallery II - 12:15 p.m.~12:30 p.m. Jon P. Trochet Professor Diane Jacobs, Sponsor Building an AC/DC Power Supply AC/DC power supplies are electronic devices used in virtually every electronics lab. This device features AC and DC outputs commonly used in undergraduate physics and electronic lab work. The output is fully protected from short circuits and there are safety grounding circuits to protect the user. I will discuss the construction of the power supply as well as how the device works. Session A - Tower Room - 9:30 a.m.~9:45 a.m.