多尺度构建石墨烯纤维及光电性能调控
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- 英文论文题名：Multi scale construction of graphene fiber and the regulation of photoelectric properties
- 论文作者：胡平安 ; 张甲 ; 王晓娜
- 英文论文作者：PingAn Hu ; Jia Zhang ; Xiana Wang ; Research Centre for Micro/nanotechnology ; Harbin Institute of Technology
- 年：2016
- 作者机构：哈尔滨工业大学微纳米研究中心;
- 论文关键词：石墨烯 ; 纤维 ; 光电性能
- 会议召开时间：2016-07-03
- 会议录名称：中国化学会第30届学术年会摘要集-论坛二：新型前沿交叉化学论坛
- 语种：中文
- 分类号：TQ343
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-论坛二 ; 新型前沿交叉化学论坛
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：213k
- 原文格式：D
- 会议级别：全国
摘要
高伸缩性和导电性纤维在可穿戴器件方面具有重要应用前景。采用多尺度结构协调增益原则,首先提出了一种仿贝壳纳米尺度和螺旋微米结构相组合的材料构建,其微观是纳米尺度的"泥-砖"层状结构,次级结构是微米尺度的螺旋结构。这两种结构的协调组合赋予纤维具有超高的伸长性和较高的机械强度,从而具有超高的韧性。进一步以各种二维层状物为原料,批量制备出不同的仿贝壳螺旋纤维。纤维伸长率可超过400%,并且韧性(toughness)高达640Jg~(-1),是贝壳的三百多倍。在螺旋纤维中引入发光硒化镉(Cd Se)量子线,发现该螺旋纤维在非偏振光的激发下发出极化偏振光,偏振光的类型(左旋或右旋)由纤维的螺旋方向决定,偏振光的强度可以通过螺旋纤维机械形变来调节。研发出大量从超长化学气相沉积(CVD)生长方法及其核壳结构纤维的批量制备技术。所制备的核壳结构CVD石墨烯纤维具有优异的导电性和优良的力学性能,在应变传感器方面具有重要应用前景。
High scalability and conductive fibers have important application prospects in the field of wearable devices. Using multi-scale structure coordination gain principle, we first proposed a imitation shell nano scale and micrometer screw structure combined with building materials, the micro is nano scale clay brick layer structure, the secondary structure is helical structure of the micron scale. The combination of these two kinds of structure gives the fiber with high elongation and high mechanical strength, so it has high toughness. In helical fibers into luminescence cadmium selenide(Cd Se) quantum wires and found that the helical fibers in non polarized light under the excitation of a polarization of polarized light, polarized light(left-hand or right-hand) type is determined by the spiral direction of the fiber, the polarized light intensity can be regulated by mechanical deformation of helical fibers.
High scalability and conductive fibers have important application prospects in the field of wearable devices. Using multi-scale structure coordination gain principle, we first proposed a imitation shell nano scale and micrometer screw structure combined with building materials, the micro is nano scale clay brick layer structure, the secondary structure is helical structure of the micron scale. The combination of these two kinds of structure gives the fiber with high elongation and high mechanical strength, so it has high toughness. In helical fibers into luminescence cadmium selenide(Cd Se) quantum wires and found that the helical fibers in non polarized light under the excitation of a polarization of polarized light, polarized light(left-hand or right-hand) type is determined by the spiral direction of the fiber, the polarized light intensity can be regulated by mechanical deformation of helical fibers.
引文
[1]Zhang,J.;Feng W.;Zhang,H,;Wang,Z.L.;Calcaterra,H.A.;Yeom,B.;Hu,P.A.*;Kotov,N.A.,Nature Comm,2016,7,10701.
[2]Wang,X.N.;Qiu,Y.F.;Cao,W.;Hu,P.A.Chem.Mater,2015,27(20),6969-6975
[2]Wang,X.N.;Qiu,Y.F.;Cao,W.;Hu,P.A.Chem.Mater,2015,27(20),6969-6975
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