Joo Ran Kim1, Jung J Kim2. 1. Fiber Science, Cornell University, Ithaca, NY 14853, USA. jk992@cornell.edu. 2. Department of Civil Engineering, Kyungnam University, Changwon-si 51767, Korea. jungkim@kyungnam.ac.kr.
The published article [1] has been retracted at the request of the corresponding author due to a data error in Figure 8, and the citation to article [2] was missed. We note that the retraction of published article [1] was recommended by an investigation carried out by the Cornell University. The paper will therefore be marked as retracted. We apologize for any inconvenience caused by the removal of this article. Materials is a member of the Committee on Publication Ethics (COPE) and strives to uphold the highest ethical standards.