fig7

Figure 7. Strain sensors. (A) Schematic of the principle strain sensing mechanisms; (B) Motion detection of index and middle fingers (left) and control of avatar fingers using a wireless smart glove system (right). Reproduced with permission from ref^[169]. Copyright 2014, American Chemical Society; (C) Conductivity and Young’s modulus of the BEC at fixed PANI concentration [10% (v/v)] (left) and conductivity change under stretching for different amounts of PANI (right). Reproduced with permission from ref^[170]. Copyright 2013, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim; (D) Deformation of the dome-shaped nanocomposite sensor under pinching and binding; (E) Multidirectional strain mapping test (left) and mechanism for distinguishing the direction of the strain (right); (F) Control of robotic finger motions using the strain sensor. Reproduced with permission from ref^[171]. Copyright 2017, The Author(s). BEC: Block copolymer elastic conductor; MWCNT: multi-walled carbon nanotube; PANI: polyaniline; SEBS: poly[styrene-b-(ethylene-co-butylene)-b-styrene]; SEBS-g-MA: poly-(styrene-co-ethylene-butylene-g-maleic-anhydride-co-styrene).