| 1 | 1/1 | 返回列表 |
| 查看: 301 | 回復: 0 | |||
yexuqing木蟲之王 (文學泰斗)
太陽系系主任
|
[交流]
動態(tài)強度高達14 GPa的碳納米管纖維
|
|
動態(tài)強度高達14 GPa的碳納米管纖維 ▲ 作者:XINSHI ZHANG, XUDONG LEI, XIANGZHENG JIA, TONGZHAO SUN, JIAJUN LUO, SHICHEN XU, ET AL. ▲ 鏈接: https://www.science.org/doi/10.1126/science.adj1082 ▲ 摘要: 高動態(tài)強度對于在高應變率環(huán)境中使用的纖維材料至關重要。碳納米管纖維是最有前景的候選纖維之一。 采用優(yōu)化分層結構的策略,研究組制備出動態(tài)強度為14 GPa且能量吸收性能優(yōu)異的碳納米管纖維。纖維的動態(tài)性能歸因于高應變率加載過程中單個納米管的同時斷裂和沖擊能量的離域;這些行為則歸因于界面相互作用、納米管排列和致密化的改善。 這項工作提出了一種在宏觀尺度上利用單個碳納米管強度的有效策略,并提供了新的機制見解。 ▲ Abstract: High dynamic strength is of fundamental importance for fibrous materials that are used in high–strain rate environments. Carbon nanotube fibers are one of the most promising candidates. Using a strategy to optimize hierarchical structures, we fabricated carbon nanotube fibers with a dynamic strength of 14 gigapascals (GPa) and excellent energy absorption. The dynamic performance of the fibers is attributed to the simultaneous breakage of individual nanotubes and delocalization of impact energy that occurs during the high–strain rate loading process; these behaviors are due to improvements in interfacial interactions, nanotube alignment, and densification therein. This work presents an effective strategy to utilize the strength of individual carbon nanotubes at the macroscale and provides fresh mechanism insights. Spin torque–driven electron paramagnetic resonance of a single spin in a pentacene molecule |

| 1 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 紡織、生物、化學、材料等專業(yè) +3 | Eember. 2026-03-05 | 7/350 |
|
|---|---|---|---|---|
|
[考研] 材料類考研調(diào)劑 +7 | gemmgemm 2026-03-01 | 8/400 |
|
|
[考研] 【求調(diào)劑】293分環(huán)境工程求調(diào)劑材料/化工,服從調(diào)劑,抗壓能力強! +6 | xiiiia 2026-03-04 | 6/300 |
|
|
[考研] 085600材料調(diào)劑 總分330 +5 | 池池丶 2026-03-03 | 5/250 |
|
|
[考研] 0703化學 學碩 理工科均可 不區(qū)分研究方向 總分279求調(diào)劑 +7 | 1一11 2026-03-03 | 7/350 |
|
|
[考研] 293求調(diào)劑 +3 | 是樂渝哇 2026-03-04 | 3/150 |
|
|
[考研] 一志愿中石油,化學工程,301求調(diào)劑 +3 | 豚饅枳枳 2026-03-04 | 3/150 |
|
|
[考研] 材料專碩346求調(diào)劑 +3 | 旺一下 2026-03-04 | 3/150 |
|
|
[考研] 085600 材料與化工 298 +14 | 小西笑嘻嘻 2026-03-03 | 14/700 |
|
|
[考研] 322,求調(diào)劑 +3 | 菜菜愛玩 2026-03-04 | 3/150 |
|
|
[考研] 環(huán)境調(diào)劑 +8 | chenhanheng 2026-03-02 | 8/400 |
|
|
[考研] 0703化學306調(diào)劑 +4 | 26要上岸 2026-03-03 | 4/200 |
|
|
[考研] 085700資環(huán)求調(diào)劑,初始279,六級已過,英語能力強 +3 | 085700資環(huán)調(diào)劑 2026-03-03 | 4/200 |
|
|
[考研] 化工270求調(diào)劑 +10 | 什么名字qwq 2026-03-02 | 10/500 |
|
|
[考研] 085600材料工程一志愿中科大總分312求調(diào)劑 +9 | 吃宵夜1 2026-02-28 | 11/550 |
|
|
[考研] 306分材料調(diào)劑 +5 | chuanzhu川燭 2026-03-01 | 6/300 |
|
|
[考研] 261求調(diào)劑 +3 | 陸lh 2026-03-01 | 3/150 |
|
|
[考研] 303求調(diào)劑 +5 | 今夏不夏 2026-03-01 | 5/250 |
|
|
[考研] 調(diào)劑 +3 | 13853210211 2026-03-02 | 4/200 |
|
|
[考研] 材料類求調(diào)劑 +11 | wana_kiko 2026-02-28 | 14/700 |
|