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240312s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202314097
|2 doi
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|a pubmed24n1477.xml
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|a (DE-627)NLM369565606
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|a (NLM)38466829
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Chen, Yunxia
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Sequential Dual Alignments Introduce Synergistic Effect on Hexagonal Boron Nitride Platelets for Superior Thermal Performance
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 20.07.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Planarly aligning 2D platelets is challenging due to their additional orientational freedom compared to 1D materials. This study reports a sequential dual-alignment approach, employing an extrusion-printing-induced shear force and rotating-magnetic-field-induced force couple for platelet planarly alignment in a yield-stress support bath. It is hypothesized that the partial alignment induced by a directional shear force facilitates subsequent axial rotation of the platelets for planar alignment under an external force couple, resulting in a synergistic alignment effect. This sequential dual-alignment approach achieves better planar alignment of 2D modified hexagonal boron nitride (mhBN). Specifically, the thermal conductivity of the 40 wt% mhBN/epoxy composite is significantly higher (692%) than that of unaligned composites, surpassing the cumulative effect of individual methods (only 133%) with a 5 times more synergistic effect. For 30, 40, and 50 wt% mhBN composites, the thermal conductivity values (5.9, 9.5, and 13.8 W m-1 K-1) show considerable improvement compared to the previously reported highest values (5.3, 6.6, and 8.6 W m-1 K-1). Additionally, a 3D mhBN/epoxy heat sink is printed and evaluated to demonstrate the feasibility of device fabrication. The approach enables the planar alignment of electrically or thermally conducting 2D fillers during 3D fabrication
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|a Journal Article
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|a 3D embedded printing
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|a dual alignments
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|a hexagonal boron nitride
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|a synergistic effect
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|a yield‐stress support bath
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1 |
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|a Gao, Zhiming
|e verfasserin
|4 aut
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1 |
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|a Hoo, Simon A
|e verfasserin
|4 aut
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1 |
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|a Tipnis, Varun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Renjing
|e verfasserin
|4 aut
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1 |
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|a Mitevski, Ivan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hitchcock, Dale
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Simmons, Kevin L
|e verfasserin
|4 aut
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| 700 |
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|a Sun, Ya-Ping
|e verfasserin
|4 aut
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| 700 |
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|a Sarntinoranont, Malisa
|e verfasserin
|4 aut
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| 700 |
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|a Huang, Yong
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 25 vom: 12. Juni, Seite e2314097
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:25
|g day:12
|g month:06
|g pages:e2314097
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|u http://dx.doi.org/10.1002/adma.202314097
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