Formation of self-organized nano- and micro-diamond rings
We report formation of self-organized nanodiamond ring structures due to dynamical heterogeneity in super undercooled carbon, created by nanosecond laser melting of amorphous carbon layers. We envisage that diamond tetrahedra self-organize and lead to formation of string and ring structures on which...
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Online Access: | http://dx.doi.org/10.1080/21663831.2021.1907627 |
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doaj-634c34eb3ced4f1e8a1b0b2500fb7d052021-05-06T16:05:15ZengTaylor & Francis GroupMaterials Research Letters2166-38312021-07-019730030710.1080/21663831.2021.19076271907627Formation of self-organized nano- and micro-diamond ringsJ. Narayan0A. Bhaumik1S. Gupta2P. Joshi3P. Riley4R. J. Narayan5North Carolina State UniversityIntel CorporationIntel CorporationNorth Carolina State UniversityNorth Carolina State UniversityIntel CorporationWe report formation of self-organized nanodiamond ring structures due to dynamical heterogeneity in super undercooled carbon, created by nanosecond laser melting of amorphous carbon layers. We envisage that diamond tetrahedra self-organize and lead to formation of string and ring structures on which nanodiamonds nucleate and grow. Denser ring structures are formed in Q-carbon due to higher undercooling and enhanced diamond nucleation. The average size is larger under heterogeneous nucleation compared to homogeneous nucleation due to lower critical size and free energy, allowing more time for growth. With nanosecond laser melting, growth velocities range 5–10 ms−1 and even higher for Q-carbon.http://dx.doi.org/10.1080/21663831.2021.1907627nanodiamond ringself-organized nanodiamondsq-carbon |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
J. Narayan A. Bhaumik S. Gupta P. Joshi P. Riley R. J. Narayan |
spellingShingle |
J. Narayan A. Bhaumik S. Gupta P. Joshi P. Riley R. J. Narayan Formation of self-organized nano- and micro-diamond rings Materials Research Letters nanodiamond ring self-organized nanodiamonds q-carbon |
author_facet |
J. Narayan A. Bhaumik S. Gupta P. Joshi P. Riley R. J. Narayan |
author_sort |
J. Narayan |
title |
Formation of self-organized nano- and micro-diamond rings |
title_short |
Formation of self-organized nano- and micro-diamond rings |
title_full |
Formation of self-organized nano- and micro-diamond rings |
title_fullStr |
Formation of self-organized nano- and micro-diamond rings |
title_full_unstemmed |
Formation of self-organized nano- and micro-diamond rings |
title_sort |
formation of self-organized nano- and micro-diamond rings |
publisher |
Taylor & Francis Group |
series |
Materials Research Letters |
issn |
2166-3831 |
publishDate |
2021-07-01 |
description |
We report formation of self-organized nanodiamond ring structures due to dynamical heterogeneity in super undercooled carbon, created by nanosecond laser melting of amorphous carbon layers. We envisage that diamond tetrahedra self-organize and lead to formation of string and ring structures on which nanodiamonds nucleate and grow. Denser ring structures are formed in Q-carbon due to higher undercooling and enhanced diamond nucleation. The average size is larger under heterogeneous nucleation compared to homogeneous nucleation due to lower critical size and free energy, allowing more time for growth. With nanosecond laser melting, growth velocities range 5–10 ms−1 and even higher for Q-carbon. |
topic |
nanodiamond ring self-organized nanodiamonds q-carbon |
url |
http://dx.doi.org/10.1080/21663831.2021.1907627 |
work_keys_str_mv |
AT jnarayan formationofselforganizednanoandmicrodiamondrings AT abhaumik formationofselforganizednanoandmicrodiamondrings AT sgupta formationofselforganizednanoandmicrodiamondrings AT pjoshi formationofselforganizednanoandmicrodiamondrings AT priley formationofselforganizednanoandmicrodiamondrings AT rjnarayan formationofselforganizednanoandmicrodiamondrings |
_version_ |
1721456380750069760 |