在已有的薄膜卷覆法连接一维双壁碳纳米管(DWNT)长丝的基础上，对连接接头进行了激光强化的实验研究。研究结果表明，在对接头通过一定强度电流的条件下，利用激光辐照的能量作用，可以使接头处的碳纳米管长丝之间在原来单纯的物理结合(即主要靠范德华力结合)的基础上，通过长丝内双壁碳纳米管管束之间的融合作用形成一定形式的C-C键结合，从而显著提高接头的强度。激光处理之后，接头的最高拉伸强度由处理前的189.5 MPa提高到335.6 MPa。

Based on the connection of macro-sized (centimeters long) double-walled carbon nanotube (DWNT) strands by bandaging their overlapped ends with DWNT films, the joint was reinforced through a current-assisted laser irradiation method. During the laser process, the structural transformation of the DWNT bundles inside the joint provided C-C bonds between the strands, which increased the strength of the joint. Tensile tests indicated that the joints reinforced by laser had relatively higher tensile strength with a maximum value of 335.6 MPa than that of the original ones (maximum value was 189.5 MPa).