Download Nanotrusses

Nanotruss Projects
Design and fabrication of
nanoscale truss structures for
advanced energy applications
Lauren Montemayor, Lucas Meza,
Victoria Chernow, Wendy Gu
Lauren - [email protected]
Fracture/Composites
Polymer
Metal
Fracture Toughness:
1) Lattice Structure (Stretching
vs. Bending)
2) Unit Cell Dimensions
3) Metal microstructure
Composites:
1) Strength of Polymer/Metal Bond
2) Fracture Toughness
3) Dynamic Properties
• Damping Effects
• Wave Propagation
Lucas - [email protected]
Heat Transfer/Thermoelectrics
• SURF Tasks:
– Fabrication of nanotruss structures using DLW TPL
– Measurement of thermal properties of structures
– Investigation into potential thermoelectric materials
3D Kagome Lattice
Multilayered Truss Unit Cell
Victoria - [email protected]
Solar Cells
Nanotruss Fabrication
Silver Thin Film
Deposition
Electroless plating or
ALD
Incorporation
into PV device
Electrodynamic
calculations
Geometry
optimization
Nanotruss Antireflective Coating
N-type Semiconductor
P-N Junction
P-type Semiconductor
Malureanu, R. et al. J. Electrochem. Soc. 157, 12 (2010)
Wendy - [email protected]
Si Truss Electrode for
Li+ battery
+
Li
Batteries
Lithiation of Si  400% volume change  mechanical stress
Li+
Li+
Li+
Li+
Si
Kasavajjula et al. (2007)
Goal: create a zero net volume expansion electrode based on truss geometry
Lithiation