Page 136 - Organic Electronics in Sensors and Biotechnology
P. 136

Strain and Pressure Sensors Based on OFET   113


                             –37.0n       Bent position  V  = –40 V
                                                        d
                                                         = –40 V
                                                       V g
                             –37.5n
                            I d  (A) –38.0n
                             –38.5n
                             –39.0n

                             –39.5n
                                      0     10    20     30
                                             Time (s)

               FIGURE 3.23  Experimental results for the elbow joint bending detection
               experiment.























               FIGURE 3.24  Wearable elastic band provided with a sensor for human
               breathing rhythm monitoring.


                             –16.0n          Apnea
                             –15.0n
                             –14.0n
                            I d  (A)  –13.0n
                             –12.0n
                             –11.0n
                             –10.0n                Apnea
                                     0   10   20   30   40  50
                                             Time (s)
               FIGURE 3.25  Sensor output for normal breathing and apnea.
   131   132   133   134   135   136   137   138   139   140   141