Premium
Dynamic Behavior of Vertically Aligned Carbon Nanotube Foams With Patterned Microstructure
Author(s) -
Lattanzi Ludovica,
Thevamaran Ramathasan,
De Nardo Luigi,
Daraio Chiara
Publication year - 2015
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201400571
Subject(s) - materials science , carbon nanotube , microstructure , composite material , fabrication , chemical vapor deposition , characterization (materials science) , nanotube , nanotechnology , medicine , alternative medicine , pathology
We present the design, fabrication, and dynamic characterization of micropatterned vertically aligned carbon nanotube (VACNT) foams. The foamsʼ synthesis combines photolithographic techniques with chemical vapor deposition to create materials with an effective density up to five times lower than that of bulk VACNT foams. The dynamic response of these lightweight materials is characterized by performing impact tests at different strain rates. Results show that the dynamic stress–strain behavior of the micropatterned foams is governed by the patternsʼ geometry and has negligible dependence on their bulk density. The energy absorption of the micropatterned foams is higher than most other energy absorbing materials, such as honeycombs, foams, and composites of comparable density. Highly organized CNT microstructures can be employed as lightweight material for protective applications.