Beitrag in einem Tagungsband
Femtosecond-laser-induced destruction of boron-nitride nanotubes and boron-nitride doped graphene



Details zur Publikation
Autor(inn)en:
Bauerhenne, B.; Eschstruth, N.; Zijlstra, E.; Garcia, M.
Herausgeber:
Veiko Vadim P. ; Vartanyan, Tigran A.
Verlag:
SPIE Press
Verlagsort / Veröffentlichungsort:
Bellingham
Publikationsjahr:
2013
Zeitschrift:
Proceedings of SPIE
Seitenbereich:
90650K-90650K-6
Buchtitel:
Fundamentals of Laser-Assisted Micro- and Nanotechnologies 2013
Bandnr.:
9065
Jahrgang/Band:
9065
Seitenumfang:
6
ISBN:
9780819499929
ISSN:
0277-786X

Zusammenfassung, Abstract
By means of first principles calculations we studied the intense femtosecond-laser excitation of several boronnitride nanotubes and a boron-nitride doped graphene layer up to irradiation levels where these structures disintegrate. We performed molecular dynamics simulations using our in-house Code for Highly excIted Valence Electron Systems (CHIVES). For different boron-nitride nanotubes we determined the damage threshold in terms of the electronic temperature and the absorbed energy per atom. We found that all nanotubes studied were destroyed in the first 200 fs after an ultrafast laser excitation heating the electrons to 108 mHa (34103 K). Some tubes also disintegrated at lower electronic temperatures. For the boron-nitride doped graphene we found that at a laser-induced electronic temperature of 100 mHa (31577 K) bonds break and the boron-nitride dimer leaves the structure.


Schlagwörter
boron-nitride doped graphene, boron-nitride nanotubes, density functional theory, femtosecond laser pulse, molecular dynamics simulations, ultrafast bond breaking


Autor(inn)en / Herausgeber(innen)

Zuletzt aktualisiert 2018-27-09 um 15:44