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Carbon microcoils (CMCs) with 3D-helical/spiral conformations were embedded into various elastic matrices, such as polysilicone, elastic epoxy resin, etc., to produce CMC tactile and nearness micro-sensory elements. The sensing properties of the CMC sensor element (changes in electrical parameters under an applied load (pressure) or approaching substances) were examined. The sensing ability was obtained...
In order to obtain the basic characteristics of a single-helix carbon microcoil (SH-CMC) with the diameter of ~1 mum for use as tactile sensor elements, the mechanical and electrical properties of a SH-CMC prepared by thermal chemical vapor deposition (CVD) were measured, and compared with the properties of a double-helix carbon microcoil (DH-CMC) having a diameter of about 5 mum. A SH-CMC can be...
The tactile and proximity sensing properties of CMC/silicone composites were studied by evaluating with the impedance Z as a function of CMC content in matrix. The optimum CMC content as proximity sensor element was 3 wt%, while the tactile sensor properties were increased in intensity with CMC content (over 7 wt%). The CMC sensor element with surface size of 300 times 300 mm and with a CMC content...
Carbon microcoils (CMCs) which could be extended and contracted were used to manufacture biomimetic tactile sensors of CMC/polysilicone composite sheet as artificial skins. In this study, the influences of the electrodes conditions on the L, C, and R parameter-output and the dynamic properties were investigated. The response time of these novel sensors was on a millisecond order. This performance...
The carbon microcoils (CMCs) were prepared by the Ni-catalyzed pyrolysis of acetylene containing a small amount of H 2 S, the morphology and some properties of the CMCs were examined, and the potential applications were discussed. It was found that super-elastic CMCs, which could be extended and contracted by 3–15 times of the original coil length, could be obtained by controlling the reaction...
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