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Comparative study of double walled carbon nanotubes exposed to shock wave (dynamic) vs static compression
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.
Vise andre og tillknytning
2013 (engelsk)Inngår i: Book of Abstracts, 7th EEIGM International Conference on Advanced Materials Research: March 21 - 22, 2013, LTU, Luleå - SWEDEN, 2013, s. 3-Konferansepaper, Meeting abstract (Fagfellevurdert)
Abstract [en]

We present the study of double walled carbon nanotubes (DWNTs) after application of shock wave (dynamic) compression in a recovery assembly. In the different shock wave experiments the pressure was ramped to a certain level (14, 19, 26 and 36 GPa) with a new CNT sample but always from the same source batch. The recovered samples were characterized by Raman, XPS and HRTEM revealing outer wall disruption along with unzipping and shortening of the CNTs. The carbon nanotube destruction due to temperature increase is minor compared to the effect of the shock wave for the short exposure times in the experiment. Structural damage of the CNTs increases with the shock pressure. Simultaneously, the Raman data exhibit a gradual increase of D/G-band intensity ratio. On the contrary, recent experiments in a diamond anvil cell (DAC) demonstrate high structural stability of DWCNTs exposed to a static pressure of 35 GPa. The ID/IG-ratio after exposure to static pressure starts to increase only after a clear threshold corresponding to the tubes collapse pressure. Remarkably, there are indications that the largest diameter CNTs were destroyed (RBM signal disappeared) by application of the highest shock contrary to the behavior of DWNTs at comparable static pressures. Along with the nature of the applied pressure, we discuss other possible reasons which may have caused such an effect.

sted, utgiver, år, opplag, sider
2013. s. 3-
HSV kategori
Forskningsprogram
Experimentell fysik
Identifikatorer
URN: urn:nbn:se:ltu:diva-31171Lokal ID: 5426ffaf-5005-4b2e-9183-c392ef8ebb10OAI: oai:DiVA.org:ltu-31171DiVA, id: diva2:1004401
Konferanse
EEIGM International Conference on Advanced materials research : 21/03/2013 - 22/03/2013
Merknad
Godkänd; 2013; 20130826 (ysko)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-04-25bibliografisk kontrollert

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Mases, MattiasSoldatov, Alexander

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