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Fundamentals of Thermal Conductivity Measurement

Summary

While there are many methods for thermal conductivity measurements, this course will focus on the 3ω method that enables the measurement of the thermal conductivity of thin-film. Students will make the micro-sensors and electronic circuits that are required for the measurement, and learn how to load data onto PCs, programming using Labview, and how to use measurement devices such as oscilloscopes and a lock-in amplifier.

Course Contents

1. Lectures

・Unsteady heat conduction equations
・Frequency analysis

・Understanding simple electronic circuits
・Thin film technology

2. Practical Training

・Fabrication of insulating film on measurement samples and sensors (thin metallic wire)
・Coding of a data-loading program with Labview
・Making of electronic circuits
・How to load data and how to use an oscilloscope and a lock-in amplifier
・Thermal conductivity measurements

Structure and Schedule

Lectures will be given using books and references specified in the package. Progress will be presented in a seminar style followed by written submission as a report. Experiments will take place according to the procedure specified in the package. Reports will be made once per week and meetings will be called as needed.

Course Option

Consultation allowed if there is an exercise problem related to the student's field of study other than the 3 methods

Course Objectives

In order to resolve the burden of programming for measurement, control and analytical fields, tools such as Labview are employed. In this course package, students will learn the basics of these tools. Not only will students receive practical training in computers, they will also make temperature sensors (micro-heaters), and also learn the basics of thin film technology.

Fundamental skills required for the course

It is desirable that students to have a basic knowledge of basic mathematics and physics, and chemistry if possible.

Examples of Research Theme Combinations

The following list shows examples of research projects that can be combined with this course.
"Real-time data collection devices"
"Property measurement for thin films"
"Fabrication of devices of thin films"

Assessment of academic achievement

Scores will be given on a scale of 1 to 5 for the items listed below. An average score of 3.5 is considered a passing score.

(1) Level of understanding of unsteady heat conduction
(2) Level of understanding of electronic circuits
(3) Level of understanding of programming
(4) Level of understanding of sample creation technology
(5) Final presentation and report