Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.
Phys Rev Lett. 2010 Jan 8;104(1):014501. doi: 10.1103/PhysRevLett.104.014501. Epub 2010 Jan 7.
Multiwalled carbon nanotubes (MWCNT) are exposed to a transient and strong liquid jet flow created by a pair of differently sized laser-induced cavitation bubbles. The position and size of the bubbles are controlled with a spatial light modulator within a 15 microm thick liquid gap. Depending on the tube's position with respect to this jet flow, rotation, translation, and a bending deformation is observed with a high-speed camera recording at up to 300,000 frames per second. By measuring the decay time of the respective bending modes we determine the flexural rigidity of MWCNTs to be on the range of 0.45-4.06x10(-19) N m2. The average diameter of the MWCNTs is 117.8+/-6.7 nm with a thickness of 4.6+/-0.75 nm, yielding a Young's modulus between 0.033-0.292 TPa.
多壁碳纳米管（MWCNT）暴露于由一对大小不同的激光诱导空化气泡产生的瞬态强液流中。气泡的位置和大小通过在 15 微米厚的液体间隙内的空间光调制器来控制。根据管相对于射流的位置，可以观察到高速摄像机以高达每秒 300,000 帧的速度记录的旋转、平移和弯曲变形。通过测量各弯曲模式的衰减时间，我们确定 MWCNT 的弯曲刚度在 0.45-4.06x10(-19) N m2 范围内。MWCNT 的平均直径为 117.8+/-6.7nm，厚度为 4.6+/-0.75nm，杨氏模量在 0.033-0.292TPa 之间。
