| Title |
Sensitive, High-Strain, High-Rate Bodily Motion Sensors Based on Graphene–Rubber Composites
|
|---|---|
| Published in |
ACS Nano, August 2014
|
| DOI | 10.1021/nn503454h |
| Pubmed ID | |
| Authors | |
| Abstract |
Monitoring of human bodily motion requires wearable sensors that can detect position, velocity and acceleration. They should be cheap, lightweight, mechanically compliant and display reasonable sensitivity at high strains and strain rates. No reported material has simultaneously demonstrated all the above requirements. Here we describe a simple method to infuse liquid-exfoliated graphene into natural rubber to create conducting composites. These materials are excellent strain sensors displaying 10(4)-fold increases in resistance and working at strains exceeding 800%. The sensitivity is reasonably high, with gauge factors of up to 35 observed. More importantly, these sensors can effectively track dynamic strain, working well at vibration frequencies of at least 160 Hz. At 60 Hz, we could monitor strains of at least 6% at strain rates exceeding 6000%/s. We have used these composites as bodily motion sensors, effectively monitoring joint and muscle motion as well and breathing and pulse. |
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X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 22% |
| Ireland | 2 | 22% |
| France | 1 | 11% |
| Virgin Islands, British | 1 | 11% |
| United Kingdom | 1 | 11% |
| Unknown | 2 | 22% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 4 | 44% |
| Scientists | 4 | 44% |
| Science communicators (journalists, bloggers, editors) | 1 | 11% |
Mendeley demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | <1% |
| United Kingdom | 2 | <1% |
| Italy | 1 | <1% |
| India | 1 | <1% |
| Australia | 1 | <1% |
| Unknown | 443 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 99 | 22% |
| Researcher | 55 | 12% |
| Student > Master | 53 | 12% |
| Student > Bachelor | 28 | 6% |
| Student > Doctoral Student | 22 | 5% |
| Other | 61 | 14% |
| Unknown | 132 | 29% |
| Readers by discipline | Count | As % |
|---|---|---|
| Engineering | 112 | 25% |
| Materials Science | 77 | 17% |
| Chemistry | 35 | 8% |
| Physics and Astronomy | 23 | 5% |
| Chemical Engineering | 16 | 4% |
| Other | 34 | 8% |
| Unknown | 153 | 34% |