**Chapter 4**

*Wearable Devices - The Big Wave of Innovation*

in oxygen-free solutions. Journal of the American Chemical Society.

[66] Filip J, Tkac J. Is graphene worth using in biofuel cells? Electrochimica

[67] Yu Y, Xu M, Bai L, Han L, Dong S. Recoverable hybrid enzymatic biofuel cell with molecular oxygenindependence. Biosensors & Bioelectronics. 2016;**75**:23-27

[68] Jeerapan I, Sempionatto JR, You J-M, Wang J. Enzymatic glucose/

Bioelectronics. 2018;**122**:284-289

[69] Taylor NA, Machado-Moreira CA. Regional variations in

& Medicine. 2013;**2**:4

Chemistry. 2002;**74**:908-914

2018;**17**:e35-e38

[71] Choi D-H, Thaxton A, Jeong Ic, Kim K, Sosnay PR, Cutting GR, et al. Sweat test for cystic fibrosis: Wearable sweat sensor vs. standard laboratory test. Journal of Cystic Fibrosis.

[72] Choi J, Ghaffari R, Baker LB, Rogers JA. Skin-interfaced systems for sweat collection and analytics. Science

Advances. 2018;**4**:eaar3921

oxygen biofuel cells: Use of oxygen-rich cathodes for operation under severe oxygen-deficit conditions. Biosensors &

transepidermal water loss, eccrine sweat gland density, sweat secretion rates and electrolyte composition in resting and exercising humans. Extreme Physiology

[70] Cai X, Klauke N, Glidle A, Cobbold P, Smith GL, Cooper JM. Ultra-lowvolume, real-time measurements of lactate from the single heart cell using microsystems technology. Analytical

1998;**120**:1048-1050

Acta. 2014;**136**:340-354

**50**
