作者单位:NMI Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany[1]INEB Instituto de Engenharia Biomédica, Universidade Do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal[2]ITV Institute of Textile Technology and Process Engineering, K?rschtalstr. 26, 73770 Denkendorf, Germany[3]