1. Roy Downs University of Arkansas Faculty Mentor: Joe Rencis Graduate Student Mentor: Sachin Terdalkar

2. Monolayer Structure of Carbon Atoms Hexagonal Shape Lattice Characteristics  Very Strong  Highly Conductive  High Opacity http://en.wikipedia.org/wiki/File:Graphene_xyz.jpg

3. Nano-scale Electronics Ultracapacitors Pressure Sensors Nano Resonators [Freitag, M., Nature Nanotechnology 2008] Graphene Transistor

4. Mechanical Properties: Project Focus o Young’s Modulus (measured E=1.0 TPa) o Intrinsic Strength (measured  int  130 GPa) Graphene on Silicon SubstrateAtomic Force Microscope (AFM) http://www.sciencemag.org/http://www3.physik.uni- greifswald.de/method/afm/eafm.htm Graphene Sheet Silicon Substrate Graphene Sheet

5. Graphene Sheet & AFM Indenter http://www.physorg.com/news135959004.html http://www.sciencemag.org/ 

6. Atoms are assumed lumped point masses Interaction through Inter-atomic Potential Atomic position from numerical integration of equations of motion F = ma http://en.wikipedia.org/wiki/File:Argon_dimer_potenti al_and_Lennard-Jones.png

7. Using MD Simulations Generate load-indentation curve Determine Young’s Modulus Calculate Intrinsic Strength Determine Interaction Between Si Substrate and Graphene Sheet Using MD Simulations http://www.sciencemag.org/ http://www.physorg.com/news135959004.html Silicon Substrate Graphene Sheet