Started by Hasdeo.2013.05.31 This is Moya's logbook for Nano Japan project from 2012.6.2-2012.7.31.

## Daily schedule †

• 09:00-10:00 Discussion (1)
• 10:00-12:00 Solve the problem and write the progress on pukiwiki
• 12:00-13:30 Lunch
• 13:30-14:30 Discussion (2)
• 14:30-16:30 Solve the problem and write the progress on pukiwiki
• 16:30-17:30 e-mail report and problems

## Goal of the project. †

• To describe the thermal conductivity of Nanotubes and graphene. The output will be an animation of atomic vibration and its propagation in Mathematica
• Keywords: Thermal conductivity, carbon nanotubes, Differential equation, Fourier Transform, Solid-state physics, Mathematica

## Schedule for discussion †

 Time and Day Mon Tue Wed Thu Fri 09:00-10:00 Hasdeo Tatsumi Mizuno Thomas Nugraha 13:30-14:30 Thomas Mizuno Tatsumi [group meeting] Hasdeo

## Division of tutors †

 Name Lesson to teach Misc Hasdeo Phonon in Nanotubes How to make a presentation, and Japanese class Tatsumi Nanotubes Printer and Copy machine Thomas Physical Mathematics Library Mizuno Physical Computation Computer in Lab Nugraha Phonon in Nanotubes
• Tutorial takes place in Coffee room, since visitor room will be occupied with many people

• This section is for posting questions from Moya-san and answers from other group members.
• Please list here with some simple reasons or details.
• For every problem, give a tag double asterisks (**) in the code so that it will appear in the table of contents.
• For the answer, give a tag triple asterisks (***) in the code below the problem in order to make a proper alignment.
• List from new to old.

## Report: †

### June 3: †

Today, Hasdeo-san picked me up from Urban Castle Kawauchi (UCK) with Thomas-san. I learned how to get to the lab by campus bus and have been introduced to the lab, Saito-sensei and the secretaries. Hadeo-san taught me about coupled oscillators, where I learned how to solve for the motion of two masses connected by springs. The goal is to model heat in CNT's as atoms vibrating with springs. Thomas-san also lectured me and taught me some math. He taught me how to solve the 2-dimensional Laplacian using separation of variables. He also provided some insight on the applications solving the laplacian. So far, everyone seems very nice and I am very excited to start working on thermal conductivity, which was a surprise.

### June 4: †

Today, I walked from Urban Castle Kawauchi to the lab and managed to find my way, but I might have strayed a bit! I came early to skype my family back home, but began my lessons with Tatsumi-san at 9:00. He taught me about the graphene and carbon nanotube lattice and how vectors compose the unit lattice to form the Chiral Vector and Translational Vector. He also showed me formulas which describe the nanotube lattice. For homework, I was assigned to build a carbon nanotube out of paper and I have already drawn the Chiral Vector, but have not finished the job as I need to borrow scissors and tape. I also spoke with Saito-sensei and discussed the oscillator between two walls. I have a much better understanding of this situation and Saito-sensei assigned me to work on a similar model including a drag force. I believe I understand this problem, but am not to sure about the graphs which show resonance.