1. Thermoelectrical Properties of Nano Structures Emery Kelly, Design and Technology Academy, North East ISD, San Antonio Emery Kelly, Design and Technology Academy, North East ISD, San Antonio Faculty Mentor – Dr. Choongho Yu, Assistant Professor, Mechanical Engineering Faculty Mentor – Dr. Choongho Yu, Assistant Professor, Mechanical Engineering

2. Thermoelectrical Properties of Nano Structures Mentors Mentors Dr. Choongho Yu Dr. Choongho Yu Kyungwho Choi Yeontack Ryu Kyungwho Choi Yeontack Ryu

3. Thermoelectrical Properties of Nano Structures Objective of research Objective of research Overview of experiments Overview of experiments Data to be collected Data to be collected What the data might tell us What the data might tell us

4. Thermoelectrical Properties of Nano Structures Experiments Experiments Thin FilmPolymer mix Thermoelectric Behavior of Segregated- Network Polymer Nano composites by Choongho Yu,* Yeon Seok Kim, Dasaroyong Kim, and Jaime C. Grunlan SEM results from Yeontack Ryu’s Research

5. Thermoelectrical Properties of Nano Structures The students will explore electrical properties of: The students will explore electrical properties of: – traditional bulk materials, – a nano carbontube film, – and a nano carbontube polymer composite. Properties include: Properties include: –resistance, –conductivity, –and thermoelectric power.

6. Thermoelectrical Properties of Nano Structures The relevant TEKS are: The relevant TEKS are: –111.32. Algebra I –b) Foundations for functions: knowledge and skills and performance descriptions.  (1) The student understands that a function represents a dependence of one quantity on another and can be described in a variety of ways. –(B) The student gathers and records data, or uses data sets, to determine functional (systematic) relationships between quantities. –(C) The student describes functional relationships for given problem situations and writes equations or inequalities to answer questions arising from the situations.

7. Thermoelectrical Properties of Nano Structures The relevant TEKS are: The relevant TEKS are: –111.32. Algebra I –b) Foundations for functions: knowledge and skills and performance descriptions.  (3) The student formulates equations and inequalities based on linear functions, uses a variety of methods to solve them, and analyzes the solutions in terms of the situation. –(A) The student analyzes situations involving linear functions and formulates linear equations or inequalities to solve problems. –(C) For given contexts, the student interprets and determines the reasonableness of solutions to linear equations and inequalities.

8. Thermoelectrical Properties of Nano Structures The relevant TEKS are: The relevant TEKS are: –112.47. Physics. –(2) Scientific processes. The student uses scientific methods during field and laboratory investigations.  (B) make quantitative observations and measurements with precision.  (C) organize, analyze, evaluate, make inferences, and predict trends from data.  (D) communicate valid conclusions.  (E) graph data to observe and identify relationships between variables.  (F) read the scale on scientific instruments with precision.

9. Thermoelectrical Properties of Nano Structures The relevant TEKS are: The relevant TEKS are: –§112.47. Physics. –(3) Scientific processes. The student uses critical thinking and scientific problem solving to make informed decisions.  (C) evaluate the impact of research on scientific thought, society, and the environment.  (D) describe the connection between physics and future careers; –(6) Science concepts. The student knows forces in nature.  (E) design and analyze electric circuits.

10. Thermoelectrical Properties of Nano Structures The lesson plan will take approximately one week The lesson plan will take approximately one week –Day one  Pre-test  Build op-amp –Day two  Build op-amp

11. Thermoelectrical Properties of Nano Structures Op-amp Op-amp

12. Thermoelectrical Properties of Nano Structures The lesson plan will take approximately one week The lesson plan will take approximately one week –Day Three  Build four point measuring device – Day four  Finish measuring device  Conduct measurements on samples  Collect data in excel –Day Five  Finish data collection

13. Thermoelectrical Properties of Nano Structures Four point measurement device Four point measurement device

14. Thermoelectrical Properties of Nano Structures The lesson plan will take approximately one week The lesson plan will take approximately one week –Day six  Use MatLab to evaluate data  Draw conclusions –Day seven  Lecture/Open discussion  Post-test

15. Thermoelectrical Properties of Nano Structures Example true or false test questions: Example true or false test questions: –Creating a temperature difference across a conductive material will also create an electrical potential difference. –Copper and silver have greater electrical current density than any currently known material. –Nano carbon tube polymer composites and copper electrical and thermo properties can be manipulated or designed.

16. Thermoelectrical Properties of Nano Structures Example true or false test questions: Example true or false test questions: –Creating a temperature difference across a conductive material will also create an electrical potential difference. TRUE –Copper and silver have greater electrical current density than any currently known material. FALSE –Nano carbon tube polymer composites and copper electrical and thermo properties can be easily manipulated or designed. FALSE

17. Thermoelectrical Properties of Nano Structures Acknowledgements Acknowledgements –Texas A&M E3 Program, all the staff involved –National Science Foundation –Nuclear Power Institute –Texas Workforce Commission –Chevron –Dr. Yu, he let us be research engineers, yet he was always there as our safety net to help when needed