Stretch-deforming electrode and biological sensing system
A stretch-deforming electrode includes a stretching portion. The stretching portion has a first stretching range and a second stretching range, in which the stretching portion has a first length variation and a first resistance variation in the first stretching range and a second length variation and a second resistance variation in the second stretching range. The first resistance variation remains substantially unchanged when the first length variation changes, the second resistance variation changes when the second length variation changes. The second resistance variation is represented by R2, the second length variation is represented by L2, and R2=A×L2, in which A is a positive number between 0.05 and 2.
1 . A stretch-deforming electrode, comprising:
a stretching portion having a first stretching range and a second stretching range, wherein the stretching portion has a first length variation and a first resistance variation in the first stretching range and a second length variation and a second resistance variation in the second stretching range, the first resistance variation remains substantially unchanged when the first length variation changes, the second resistance variation changes when the second length variation changes, the second resistance variation is represented by R2, the second length variation is represented by L2, R2=A×L2, A is a positive number between 0.05 and 2, the first length variation is between 0% and 250%, and the second length variation is between 250% and 450%.
2 . The stretch-deforming electrode according to claim 1 , wherein a stretching resistance recovery rate of the stretching portion is between 95% and 100%.
3 . The stretch-deforming electrode according to claim 2 , wherein a number of stretching recovery times of the stretching portion is between 1 and 3000 times.
4 . The stretch-deforming electrode according to claim 1 , wherein a ratio of a range of the first length variation to a range of the second length variation is greater than or equal to 1.25.
5 . The stretch-deforming electrode according to claim 1 , wherein the stretching portion comprises a plurality of conductive particle structures, and an average particle size of the conductive particle structures is between 0.5 nm and 100 μm.
6 . The stretch-deforming electrode according to claim 1 , wherein the stretching portion comprises a plurality of conductive wire structures, an average wire diameter of the conductive wire structures is between 0.5 nm and 1 μm, and an average wire length of the conductive wire structures is between 50 nm and 1000 μm.
7 . A biological sensing system, comprising:
a transmitter comprising a working electrode layer, wherein the working electrode layer comprises the stretch-deforming electrode according to claim 1 ;
a receiver electrically connected to the transmitter, wherein the receiver is configured to receive a substance to be measured and transmit a first signal value generated by the substance to be measured to the transmitter, such that the transmitter outputs the first signal value and a second signal value;
a controller electrically connected to the transmitter, wherein the controller is configured to receive the first signal value and the second signal value and determine whether the second signal value falls within the second stretching range of the stretching portion; and
a corrector electrically connected to the controller, wherein when the second signal value falls within the second stretching range of the stretching portion, the corrector is configured to correct the first signal value to calculate a parameter to be measured of the substance to be measured.
8 . The biological sensing system according to claim 7 , wherein the first signal value comprises a current value, and the second signal value comprises a resistance value.
9 . The biological sensing system according to claim 7 , wherein the receiver comprises:
a signal transmission layer connected to the working electrode layer and configured to transmit the first signal value to the working electrode layer;
a signal generation layer configured to receive the substance to be measured; and
a signal enhancement layer sandwiched between the signal transmission layer and the signal generation layer.
10 . The biological sensing system according to claim 9 , wherein an oxidation potential of the signal transmission layer is higher than an oxidation potential of the signal enhancement layer.
11 . The biological sensing system according to claim 7 , wherein the working electrode layer has a first surface and a second surface facing away from the first surface, and the biological sensing system further comprises:
a substrate disposed on the first surface of the working electrode layer; and
a waterproof layer disposed on the second surface of the working electrode layer and having a through hole, wherein the receiver is exposed by the through hole.
12 . The biological sensing system according to claim 7 ,
wherein the working electrode layer has a first side and a second side facing away from the first side, and the transmitter further comprises:
a counter electrode layer disposed on the first side of the working electrode layer and comprising a second stretch-deforming electrode comprising a second stretching portion having a first stretching range and a second stretching range, wherein the second stretching portion has the first length variation and the first resistance variation in the first stretching range of the second stretching portion and the second length variation and the second resistance variation in the second stretching range of the second stretching portion; and
a reference electrode layer disposed on the second side of the working electrode layer and comprising a third stretch-deforming electrode comprising a third stretching portion having a first stretching range and a second stretching range, wherein the third stretching portion has the first length variation and the first resistance variation in the first stretching range of the third stretching portion and the second length variation and the second resistance variation in the second stretching range of the third stretching portion.
13 . A stretch-deforming electrode, comprising:
a stretching portion having a first stretching range and a second stretching range, wherein the stretching portion has a first length variation and a first resistance variation in the first stretching range and a second length variation and a second resistance variation in the second stretching range, the first resistance variation remains substantially unchanged when the first length variation changes, the second resistance variation changes when the second length variation changes, the second resistance variation is represented by R2, the second length variation is represented by L2, R2=A×L2, A is a positive number between 0.05 and 2, and a ratio of a range of the first length variation to a range of the second length variation is greater than or equal to 1.25.
14 . The stretch-deforming electrode according to claim 13 , wherein a stretching resistance recovery rate of the stretching portion is between 95% and 100%.
15 . The stretch-deforming electrode according to claim 14 , wherein a number of stretching recovery times of the stretching portion is between 1 and 3000 times.
16 . The stretch-deforming electrode according to claim 13 , wherein the stretching portion comprises a plurality of conductive wire structures, an average wire diameter of the conductive wire structures is between 0.5 nm and 1 μm, and an average wire length of the conductive wire structures is between 50 nm and 1000 μm.
17 . A biological sensing system, comprising:
a transmitter comprising a working electrode layer, wherein the working electrode layer comprises the stretch-deforming electrode according to claim 13 ;
a receiver electrically connected to the transmitter, wherein the receiver is configured to receive a substance to be measured and transmit a first signal value generated by the substance to be measured to the transmitter, such that the transmitter outputs the first signal value and a second signal value;
a controller electrically connected to the transmitter, wherein the controller is configured to receive the first signal value and the second signal value and determine whether the second signal value falls within the second stretching range of the stretching portion; and
a corrector electrically connected to the controller, wherein when the second signal value falls within the second stretching range of the stretching portion, the corrector is configured to correct the first signal value to calculate a parameter to be measured of the substance to be measured.
18 . The biological sensing system according to claim 17 , wherein the first signal value comprises a current value, and the second signal value comprises a resistance value.
19 . A biological sensing system, comprising:
a transmitter comprising a working electrode layer, wherein the working electrode layer comprises a stretch-deforming electrode comprising a stretching portion having a first stretching range and a second stretching range, wherein the stretching portion has a first length variation and a first resistance variation in the first stretching range and a second length variation and a second resistance variation in the second stretching range, the first resistance variation remains substantially unchanged when the first length variation changes, the second resistance variation changes when the second length variation changes, the second resistance variation is represented by R2, the second length variation is represented by L2, R2=A×L2, and A is a positive number between 0.05 and 2;
a receiver electrically connected to the transmitter, wherein the receiver is configured to receive a substance to be measured and transmit a first signal value generated by the substance to be measured to the transmitter, such that the transmitter outputs the first signal value and a second signal value;
a controller electrically connected to the transmitter, wherein the controller is configured to receive the first signal value and the second signal value and determine whether the second signal value falls within the second stretching range of the stretching portion; and
a corrector electrically connected to the controller, wherein when the second signal value falls within the second stretching range of the stretching portion, the corrector is configured to correct the first signal value to calculate a parameter to be measured of the substance to be measured.
20 . The biological sensing system according to claim 19 , wherein the first signal value comprises a current value, and the second signal value comprises a resistance value.