| 초록 |
Sweat sensors are expected to be the most appropriate wearable device for healthcare monitoring because sweat can be used for sensing various diseases in non-invasive ways and can be easily sampled from human body. However, practical use of sweat sensor has been impeded by irregular and low sweat-secretion rates. In this work, we demonstrate a sweat-collecting patch with directional sweat transportation and high sweat-collection efficiency, enabling fast and continuous monitoring of sweat by a sensor. The wedge-shaped wettability patterns of the patch were inspired by spines of cacti; the channel shape, in combination with the superhydrophobic/superhydrophilic surface materials, induces a unidirectional Laplace pressure that transports the sweat to the sensing-area fast and spontaneously. This sweat-collecting capacity enables the continuous monitoring of changes in sweat biochemicals according to their changes in the wearer’s blood. |
