1932

Abstract

Sweat is a largely unexplored biofluid that contains many important biomarkers ranging from electrolytes and metabolites to proteins, cytokines, antigens, and exogenous drugs. The eccrine and apocrine glands produce and excrete sweat through microscale pores on the epidermal surface, offering a noninvasive means for capturing and probing biomarkers that reflect hydration state, fatigue, nutrition, and physiological changes. Recent advances in skin-interfaced wearable sensors capable of real-time in situ sweat collection and analytics provide capabilities for continuous biochemical monitoring in an ambulatory mode of operation. This review presents a broad overview of sweat-based biochemical sensor technologies with an emphasis on enabling materials, designs, and target analytes of interest. The article concludes with a summary of challenges and opportunities for researchers and clinicians in this swiftly growing field.

Loading

Article metrics loading...

/content/journals/10.1146/annurev-anchem-061318-114910
2019-06-12
2024-04-19
Loading full text...

Full text loading...

/deliver/fulltext/ac/12/1/annurev-anchem-061318-114910.html?itemId=/content/journals/10.1146/annurev-anchem-061318-114910&mimeType=html&fmt=ahah

Literature Cited

  1. 1.
    Rogers JA, Someya T, Huang Y 2010. Materials and mechanics for stretchable electronics. Science 327:59731603–7
    [Google Scholar]
  2. 2.
    Heikenfeld J, Jajack A, Rogers J, Gutruf P, Tian L et al. 2018. Wearable sensors: modalities, challenges, and prospects. Lab Chip 18:2217–48
    [Google Scholar]
  3. 3.
    Bandodkar AJ, Wang J. 2014. Non-invasive wearable electrochemical sensors: a review. Trends Biotechnol 32:7363–71
    [Google Scholar]
  4. 4.
    Choi S, Lee H, Ghaffari R, Hyeon T, Kim D-H 2016. Recent advances in flexible and stretchable bio-electronic devices integrated with nanomaterials. Adv. Mater. 28:224203–18
    [Google Scholar]
  5. 5.
    Bao Z, Chen X. 2016. Flexible and stretchable devices. Adv. Mater. 28:224177–79
    [Google Scholar]
  6. 6.
    Someya T, Bao Z, Malliaras GG 2016. The rise of plastic bioelectronics. Nature 540:7633379–85
    [Google Scholar]
  7. 7.
    Ryu S, Lee P, Chou JB, Xu R, Zhao R et al. 2015. Extremely elastic wearable carbon nanotube fiber strain sensor for monitoring of human motion. ACS Nano 9:65929–36
    [Google Scholar]
  8. 8.
    Pawar T, Chaudhuri S, Duttagupta SP 2007. Body movement activity recognition for ambulatory cardiac monitoring. IEEE Trans. Biomed. Eng. 54:5874–82
    [Google Scholar]
  9. 9.
    Trung TQ, Ramasundaram S, Hwang B-U, Lee N-E 2016. An all-elastomeric transparent and stretchable temperature sensor for body-attachable wearable electronics. Adv. Mater. 28:3502–9
    [Google Scholar]
  10. 10.
    Krishnan S, Shi Y, Webb RC, Ma Y, Bastien P et al. 2017. Multimodal epidermal devices for hydration monitoring. Microsyst. Nanoeng. 3:17014
    [Google Scholar]
  11. 11.
    Kim T, Park J, Sohn J, Cho D, Jeon S 2016. Bioinspired, highly stretchable, and conductive dry adhesives based on 1D–2D hybrid carbon nanocomposites for all-in-one ECG electrodes. ACS Nano 10:44770–78
    [Google Scholar]
  12. 12.
    Jeong JW, Kim MK, Cheng H, Yeo WH, Huang X et al. 2014. Capacitive epidermal electronics for electrically safe, long‐term electrophysiological measurements. Adv. Healthc. Mater. 3:5642–48
    [Google Scholar]
  13. 13.
    Liu Y, Pharr M, Salvatore GA 2017. Lab-on-skin: a review of flexible and stretchable electronics for wearable health monitoring. ACS Nano 11:109614–35
    [Google Scholar]
  14. 14.
    Xu S, Zhang Y, Jia L, Mathewson KE, Jang K-I et al. 2014. Soft microfluidic assemblies of sensors, circuits, and radios for the skin. Science 344:617970–74
    [Google Scholar]
  15. 15.
    Kim D-H, Lu N, Ma R, Kim Y-S, Kim R-H et al. 2011. Epidermal electronics. Science 333:6044838–43
    [Google Scholar]
  16. 16.
    Tian L, Li Y, Webb RC, Krishnan S, Bian Z et al. 2017. Flexible and stretchable 3ω sensors for thermal characterization of human skin. Adv. Funct. Mater. 27:261701282
    [Google Scholar]
  17. 17.
    Chiang PY, Chao PCP, Tarng DC, Yang CY 2017. A novel wireless photoplethysmography blood- flow volume sensor for assessing arteriovenous fistula of hemodialysis patients. IEEE Trans. Ind. Electron. 64:129626–35
    [Google Scholar]
  18. 18.
    Higurashi E, Sawada R, Ito T 2003. An integrated laser blood flowmeter. J. Lightwave Technol. 21:3591–95
    [Google Scholar]
  19. 19.
    Heikenfeld J. 2016. Non‐invasive analyte access and sensing through eccrine sweat: challenges and outlook circa 2016. Electroanalysis 28:61242–49
    [Google Scholar]
  20. 20.
    Mena-Bravo A, Luque de Castro MD 2014. Sweat: a sample with limited present applications and promising future in metabolomics. J. Pharm. Biomed. Anal. 90:139–47
    [Google Scholar]
  21. 21.
    Calderón-Santiago M, Priego-Capote F, Turck N, Robin X, Jurado-Gámez B et al. 2015. Human sweat metabolomics for lung cancer screening. Anal. Bioanal. Chem. 407:185381–92
    [Google Scholar]
  22. 22.
    Adewole OO, Erhabor GE, Adewole TO, Ojo AO, Oshokoya H et al. 2016. Proteomic profiling of eccrine sweat reveals its potential as a diagnostic biofluid for active tuberculosis. Proteom. Clin. Appl. 10:5547–53
    [Google Scholar]
  23. 23.
    Hammond KB, Turcios NL, Gibson LE 1994. Clinical evaluation of the macroduct sweat collection system and conductivity analyzer in the diagnosis of cystic fibrosis. J. Pediatr. 124:2255–60
    [Google Scholar]
  24. 24.
    Wang J. 2005. Carbon‐nanotube based electrochemical biosensors: a review. Electroanalysis 17:17–14
    [Google Scholar]
  25. 25.
    Biju V. 2014. Chemical modifications and bioconjugate reactions of nanomaterials for sensing, imaging, drug delivery and therapy. Chem. Soc. Rev. 43:3744–64
    [Google Scholar]
  26. 26.
    Matharu Z, Bandodkar AJ, Gupta V, Malhotra BD 2012. Fundamentals and application of ordered molecular assemblies to affinity biosensing. Chem. Soc. Rev. 41:31363–402
    [Google Scholar]
  27. 27.
    Matharu Z, Daggumati P, Wang L, Dorofeeva TS, Li Z, Seker E 2017. Nanoporous-gold-based electrode morphology libraries for investigating structure–property relationships in nucleic acid based electrochemical biosensors. ACS Appl. Mater. Interfaces 9:1512959–66
    [Google Scholar]
  28. 28.
    Kidwell DA, Holland JC, Athanaselis S 1998. Testing for drugs of abuse in saliva and sweat. J. Chromatogr. B Biomed. Sci. Appl. 713:1111–35
    [Google Scholar]
  29. 29.
    Harvey CJ, LeBouf RF, Stefaniak AB 2010. Formulation and stability of a novel artificial human sweat under conditions of storage and use. Toxicol. In Vitro 24:61790–96
    [Google Scholar]
  30. 30.
    Bobacka J. 1999. Potential stability of all-solid-state ion-selective electrodes using conducting polymers as ion-to-electron transducers. Anal. Chem. 71:214932–37
    [Google Scholar]
  31. 31.
    Crespo GA, Macho S, Rius FX 2008. Ion-selective electrodes using carbon nanotubes as ion-to-electron transducers. Anal. Chem. 80:41316–22
    [Google Scholar]
  32. 32.
    Li H, Smart RB. 1996. Determination of sub-nanomolar concentration of arsenic (III) in natural waters by square wave cathodic stripping voltammetry. Anal. Chim. Acta 325:1–225–32
    [Google Scholar]
  33. 33.
    Jiokeng SL, Dongmo LM, Ymélé E, Ngameni E, Tonlé IK 2017. Sensitive stripping voltammetry detection of Pb(II) at a glassy carbon electrode modified with an amino-functionalized attapulgite. Sens. Actuators B 242:1027–34
    [Google Scholar]
  34. 34.
    Bandodkar AJ, O'Mahony AM, Ramírez J, Samek IA, Anderson SM et al. 2013. Solid-state Forensic Finger sensor for integrated sampling and detection of gunshot residue and explosives: towards ‘lab-on-a-finger’. Analyst 138:185288–95
    [Google Scholar]
  35. 35.
    Sanghavi BJ, Wolfbeis OS, Hirsch T, Swami NS 2015. Nanomaterial-based electrochemical sensing of neurological drugs and neurotransmitters. Microchim. Acta 182:1–21–41
    [Google Scholar]
  36. 36.
    Izadyar A, Arachchige DR, Cornwell H, Hershberger JC 2016. Ion transfer stripping voltammetry for the detection of nanomolar levels of fluoxetine, citalopram, and sertraline in tap and river water samples. Sens. Actuators B 223:226–33
    [Google Scholar]
  37. 37.
    De Jong M, Sleegers N, Kim J, Van Durme F, Samyn N et al. 2016. Electrochemical fingerprint of street samples for fast on-site screening of cocaine in seized drug powders. Chem. Sci. 7:32364–70
    [Google Scholar]
  38. 38.
    Mishra RK, Hubble LJ, Martín A, Kumar R, Barfidokht A et al. 2017. Wearable flexible and stretchable glove biosensor for on-site detection of organophosphorus chemical threats. ACS Sens 2:4553–61
    [Google Scholar]
  39. 39.
    Gupta BD, Shrivastav AM, Usha SP 2017. Optical Sensors for Biomedical Diagnostics and Environmental Monitoring Boca Raton: FL: CRC Press
  40. 40.
    Caucheteur C, Guo T, Albert J 2015. Review of plasmonic fiber optic biochemical sensors: improving the limit of detection. Anal. Bioanal. Chem. 407:143883–97
    [Google Scholar]
  41. 41.
    Verma R, Gupta BD. 2015. Detection of heavy metal ions in contaminated water by surface plasmon resonance based optical fibre sensor using conducting polymer and chitosan. Food Chem 166:568–75
    [Google Scholar]
  42. 42.
    Gillanders RN, Samuel ID, Turnbull GA 2017. A low-cost, portable optical explosive-vapour sensor. Sens. Actuators B 245:334–40
    [Google Scholar]
  43. 43.
    Zhu H, Fan J, Wang B, Peng X 2015. Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions. Chem. Soc. Rev. 44:134337–66
    [Google Scholar]
  44. 44.
    Du Y, Guo S. 2016. Chemically doped fluorescent carbon and graphene quantum dots for bioimaging, sensor, catalytic and photoelectronic applications. Nanoscale 8:52532–43
    [Google Scholar]
  45. 45.
    Polavarapu L, Pérez-Juste J, Xu Q-H, Liz-Marzán LM 2014. Optical sensing of biological, chemical and ionic species through aggregation of plasmonic nanoparticles. J. Mater. Chem. C 2:367460–76
    [Google Scholar]
  46. 46.
    Koh A, Kang D, Xue Y, Lee S, Pielak RM et al. 2016. A soft, wearable microfluidic device for the capture, storage, and colorimetric sensing of sweat. Sci. Transl. Med. 8:366366ra165
    [Google Scholar]
  47. 47.
    Kim SB, Zhang Y, Won SM, Bandodkar AJ, Sekine Y et al. 2018. Super-absorbent polymer valves and colorimetric chemistries for time-sequenced discrete sampling and chloride analysis of sweat via skin-mounted soft microfluidics. Small 14:121703334
    [Google Scholar]
  48. 48.
    Choi J, Ghaffari R, Baker LB, Rogers JA 2018. Skin-interfaced systems for sweat collection and analytics. Sci. Adv. 4:2eaar3921
    [Google Scholar]
  49. 49.
    Sekine Y, Kim SB, Zhang Y, Bandodkar AJ, Xu S et al. 2018. A fluorometric skin-interfaced microfluidic device and smartphone imaging module for in situ quantitative analysis of sweat chemistry. Lab Chip 18:152178–86
    [Google Scholar]
  50. 50.
    Wang C, Wang C, Huang Z, Xu S 2018. Materials and structures toward soft electronics. Adv. Mater. 30:501801368
    [Google Scholar]
  51. 51.
    Imani S, Bandodkar AJ, Mohan AMV, Kumar R, Yu S et al. 2016. A wearable chemical–electrophysio-logical hybrid biosensing system for real-time health and fitness monitoring. Nat. Commun. 7:11650
    [Google Scholar]
  52. 52.
    Nakata S, Arie T, Akita S, Takei K 2017. Wearable, flexible, and multifunctional healthcare device with an ISFET chemical sensor for simultaneous sweat pH and skin temperature monitoring. ACS Sens 2:3443–48
    [Google Scholar]
  53. 53.
    Gao W, Emaminejad S, Nyein HYY, Challa S, Chen K et al. 2016. Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis. Nature 529:509
    [Google Scholar]
  54. 54.
    Bandodkar AJ, Jia W, Yardımcı C, Wang X, Ramirez J, Wang J 2014. Tattoo-based noninvasive glucose monitoring: a proof-of-concept study. Anal. Chem. 87:1394–98
    [Google Scholar]
  55. 55.
    Bandodkar AJ, Jia W, Wang J 2015. Tattoo‐based wearable electrochemical devices: a review. Electroanalysis 27:3562–72
    [Google Scholar]
  56. 56.
    Castano LM, Flatau AB. 2014. Smart fabric sensors and e-textile technologies: a review. Smart Mater. Struct. 23:5053001
    [Google Scholar]
  57. 57.
    Parrilla M, Cánovas R, Jeerapan I, Andrade FJ, Wang J 2016. A textile‐based stretchable multi‐ion potentiometric sensor. Adv. Healthc. Mater. 5:9996–1001
    [Google Scholar]
  58. 58.
    Caldara M, Colleoni C, Guido E, Re V, Rosace G 2016. Optical monitoring of sweat pH by a textile fabric wearable sensor based on covalently bonded litmus-3-glycidoxypropyltrimethoxysilane coating. Sens. Actuators B 222:213–20
    [Google Scholar]
  59. 59.
    Windmiller JR, Bandodkar AJ, Parkhomovsky S, Wang J 2012. Stamp transfer electrodes for electrochemical sensing on non-planar and oversized surfaces. Analyst 137:71570–75
    [Google Scholar]
  60. 60.
    Liu X, Lillehoj PB. 2016. Embroidered electrochemical sensors for biomolecular detection. Lab Chip 16:112093–98
    [Google Scholar]
  61. 61.
    Jeerapan I, Sempionatto JR, Pavinatto A, You J-M, Wang J 2016. Stretchable biofuel cells as wearable textile-based self-powered sensors. J. Mater. Chem. A 4:4718342–53
    [Google Scholar]
  62. 62.
    Bandodkar AJ, Jeerapan I, You J-M, Nuñez-Flores R, Wang J 2015. Highly stretchable fully-printed CNT-based electrochemical sensors and biofuel cells: combining intrinsic and design-induced stretchability. Nano Lett 16:1721–27
    [Google Scholar]
  63. 63.
    Bell CA, Yu J, Barker IA, Truong VX, Cao Z et al. 2016. Independent control of elastomer properties through stereocontrolled synthesis. Angew. Chem. Int. Ed. 55:4213076–80
    [Google Scholar]
  64. 64.
    Kojio K, Fukumaru T, Furukawa M 2004. Highly softened polyurethane elastomer synthesized with novel 1,2-bis(isocyanate)ethoxyethane. Macromolecules 37:93287–91
    [Google Scholar]
  65. 65.
    Jang K-I, Chung HU, Xu S, Lee CH, Luan H et al. 2015. Soft network composite materials with deterministic and bio-inspired designs. Nat. Commun. 6:6566
    [Google Scholar]
  66. 66.
    Wilke K, Martin A, Terstegen L, Biel S 2007. A short history of sweat gland biology. Int. J. Cosmet. Sci. 29:3169–79
    [Google Scholar]
  67. 67.
    Taylor NA, Machado-Moreira CA. 2013. Regional variations in transepidermal water loss, eccrine sweat gland density, sweat secretion rates and electrolyte composition in resting and exercising humans. Extreme Physiol. Med. 2:14
    [Google Scholar]
  68. 68.
    Roberts MF, Wenger CB, Stolwijk J, Nadel ER 1977. Skin blood flow and sweating changes following exercise training and heat acclimation. J. Appl. Physiol. 43:1133–37
    [Google Scholar]
  69. 69.
    Anderson RK, Kenney WL. 1987. Effect of age on heat-activated sweat gland density and flow during exercise in dry heat. J. Appl. Physiol. 63:31089–94
    [Google Scholar]
  70. 70.
    Kim T-W, Shin Y-O, Lee J-B, Min Y-K, Yang H-M 2010. Effect of caffeine on the metabolic responses of lipolysis and activated sweat gland density in human during physical activity. Food Sci. Biotechnol. 19:41077–81
    [Google Scholar]
  71. 71.
    Adams WC, Mack GW, Langhans GW, Nadel ER 1992. Effects of varied air velocity on sweating and evaporative rates during exercise. J. Appl. Physiol. 73:62668–74
    [Google Scholar]
  72. 72.
    Allen JA, Armstrong JE, Roddie I 1973. The regional distribution of emotional sweating in man. J. Physiol. 235:3749–59
    [Google Scholar]
  73. 73.
    Gibson LE, Cooke RE. 1959. A test for concentration of electrolytes in sweat in cystic fibrosis of the pancreas utilizing pilocarpine by iontophoresis. Pediatrics 23:3545–49
    [Google Scholar]
  74. 74.
    Nge PN, Rogers CI, Woolley AT 2013. Advances in microfluidic materials, functions, integration, and applications. Chem. Rev. 113:42550–83
    [Google Scholar]
  75. 75.
    Nyein HYY, Tai L-C, Ngo QP, Chao M, Zhang G et al. 2018. A wearable sweat sensing patch for dynamic sweat secretion analysis. ACS Sens 3:5944–52
    [Google Scholar]
  76. 76.
    Martín A, Kim J, Kurniawan JF, Sempionatto JR, Moreto JR et al. 2017. Epidermal microfluidic electrochemical detection system: enhanced sweat sampling and metabolite detection. ACS Sens 2:121860–68
    [Google Scholar]
  77. 77.
    Choi J, Kang D, Han S, Kim SB, Rogers JA 2017. Thin, soft, skin-mounted microfluidic networks with capillary bursting valves for chrono-sampling of sweat. Adv. Healthc. Mater. 6:51601355
    [Google Scholar]
  78. 78.
    Choi J, Xue Y, Xia W, Ray TR, Reeder JT et al. 2017. Soft, skin-mounted microfluidic systems for measuring secretory fluidic pressures generated at the surface of the skin by eccrine sweat glands. Lab Chip 17:152572–80
    [Google Scholar]
  79. 79.
    Emaminejad S, Gao W, Wu E, Davies ZA, Nyein HYY et al. 2017. Autonomous sweat extraction and analysis applied to cystic fibrosis and glucose monitoring using a fully integrated wearable platform. PNAS 114:184625–30
    [Google Scholar]
  80. 80.
    Bandodkar AJ, Molinnus D, Mirza O, Guinovart T, Windmiller JR et al. 2014. Epidermal tattoo potentiometric sodium sensors with wireless signal transduction for continuous non-invasive sweat monitoring. Biosens. Bioelectron. 54:Suppl. C603–9
    [Google Scholar]
  81. 81.
    Rose DP, Ratterman ME, Griffin DK, Hou L, Kelley-Loughnane N et al. 2015. Adhesive RFID sensor patch for monitoring of sweat electrolytes. IEEE Trans. Biomed. Eng. 62:61457–65
    [Google Scholar]
  82. 82.
    Kim J, Campbell AS, Wang J 2018. Wearable non-invasive epidermal glucose sensors: a review. Talanta 177:Suppl. C163–70
    [Google Scholar]
  83. 83.
    Abellán-Llobregat A, Jeerapan I, Bandodkar A, Vidal L, Canals A et al. 2017. A stretchable and screen-printed electrochemical sensor for glucose determination in human perspiration. Biosens. Bioelectron. 91:885–91
    [Google Scholar]
  84. 84.
    Lee H, Hong YJ, Baik S, Hyeon T, Kim DH 2018. Enzyme‐based glucose sensor: from invasive to wearable device. Adv. Healthc. Mater. 7:81701150
    [Google Scholar]
  85. 85.
    Kim J, Jeerapan I, Imani S, Cho TN, Bandodkar A et al. 2016. Noninvasive alcohol monitoring using a wearable tattoo-based iontophoretic-biosensing system. ACS Sens 1:81011–19
    [Google Scholar]
  86. 86.
    Kim J, Sempionatto JR, Imani S, Hartel MC, Barfidokht A et al. 2018. Simultaneous monitoring of sweat and interstitial fluid using a single wearable biosensor platform. Adv. Sci. 5:101800880
    [Google Scholar]
  87. 87.
    Schazmann B, Morris D, Slater C, Beirne S, Fay C et al. 2010. A wearable electrochemical sensor for the real-time measurement of sweat sodium concentration. Anal. Methods 2:4342–48
    [Google Scholar]
  88. 88.
    Parlak O, Keene ST, Marais A, Curto VF, Salleo A 2018. Molecularly selective nanoporous membrane-based wearable organic electrochemical device for noninvasive cortisol sensing. Sci. Adv. 4:7eaar2904
    [Google Scholar]
  89. 89.
    Jia W, Bandodkar AJ, Valdés-Ramírez G, Windmiller JR, Yang Z et al. 2013. Electrochemical tattoo biosensors for real-time noninvasive lactate monitoring in human perspiration. Anal. Chem. 85:146553–60
    [Google Scholar]
  90. 90.
    Oh SY, Hong SY, Jeong YR, Yun J, Park H et al. 2018. Skin-attachable, stretchable electrochemical sweat sensor for glucose and pH detection. ACS Appl. Mater. Interfaces 10:1613729–40
    [Google Scholar]
  91. 91.
    Khodagholy D, Curto VF, Fraser KJ, Gurfinkel M, Byrne R et al. 2012. Organic electrochemical transistor incorporating an ionogel as a solid state electrolyte for lactate sensing. J. Mater. Chem. 22:104440–43
    [Google Scholar]
  92. 92.
    Kim J, Kumar R, Bandodkar AJ, Wang J 2017. Advanced materials for printed wearable electrochemical devices: a review. Adv. Electron. Mater. 3:11600260
    [Google Scholar]
  93. 93.
    Lee H, Choi TK, Lee YB, Cho HR, Ghaffari R et al. 2016. A graphene-based electrochemical device with thermoresponsive microneedles for diabetes monitoring and therapy. Nat. Nanotech. 11:6566–72
    [Google Scholar]
  94. 94.
    Simmers P, Li SK, Kasting G, Heikenfeld J 2018. Prolonged and localized sweat stimulation by iontophoretic delivery of the slowly-metabolized cholinergic agent carbachol. J. Dermatol. Sci. 89:140–51
    [Google Scholar]
  95. 95.
    Nyein HYY, Gao W, Shahpar Z, Emaminejad S, Challa S et al. 2016. A wearable electrochemical platform for noninvasive simultaneous monitoring of Ca2+ and pH. ACS Nano 10:77216–24
    [Google Scholar]
  96. 96.
    Guinovart T, Bandodkar AJ, Windmiller JR, Andrade FJ, Wang J 2013. A potentiometric tattoo sensor for monitoring ammonium in sweat. Analyst 138:227031–38
    [Google Scholar]
  97. 97.
    Curto VF, Fay C, Coyle S, Byrne R, O'Toole C et al. 2012. Real-time sweat pH monitoring based on a wearable chemical barcode micro-fluidic platform incorporating ionic liquids. Sens. Actuators B 171–172:Suppl. C1327–34
    [Google Scholar]
  98. 98.
    Parrilla M, Ferré J, Guinovart T, Andrade FJ 2016. Wearable potentiometric sensors based on commercial carbon fibres for monitoring sodium in sweat. Electroanalysis 28:61267–75
    [Google Scholar]
  99. 99.
    Bandodkar AJ, Hung VW, Jia W, Valdés-Ramírez G, Windmiller JR et al. 2013. Tattoo-based potentiometric ion-selective sensors for epidermal pH monitoring. Analyst 138:1123–28
    [Google Scholar]
  100. 100.
    Wang S, Wu Y, Gu Y, Li T, Luo H et al. 2017. Wearable sweatband sensor platform based on gold nanodendrite array as efficient solid contact of ion-selective electrode. Anal. Chem. 89:1910224–31
    [Google Scholar]
  101. 101.
    Gonzalo-Ruiz J, Mas R, de Haro C, Cabruja E, Camero R et al. 2009. Early determination of cystic fibrosis by electrochemical chloride quantification in sweat. Biosens. Bioelectron. 24:61788–91
    [Google Scholar]
  102. 102.
    Speich M, Pineau A, Ballereau F 2001. Minerals, trace elements and related biological variables in athletes and during physical activity. Clin. Chim. Acta 312:1–21–11
    [Google Scholar]
  103. 103.
    Gao W, Nyein HY, Shahpar Z, Fahad HM, Chen K et al. 2016. Wearable microsensor array for multiplexed heavy metal monitoring of body fluids. ACS Sens 1:7866–74
    [Google Scholar]
  104. 104.
    Kim J, de Araujo WR, Samek IA, Bandodkar AJ, Jia W et al. 2015. Wearable temporary tattoo sensor for real-time trace metal monitoring in human sweat. Electrochem. Commun. 51:41–45
    [Google Scholar]
  105. 105.
    Tai LC, Gao W, Chao M, Bariya M, Ngo QP et al. 2018. Methylxanthine drug monitoring with wearable sweat sensors. Adv. Mater. 30:231707442
    [Google Scholar]
  106. 106.
    Heinrichs M, Baumgartner T, Kirschbaum C, Ehlert U 2003. Social support and oxytocin interact to suppress cortisol and subjective responses to psychosocial stress. Biol. Psychiatry 54:121389–98
    [Google Scholar]
  107. 107.
    Russell E, Koren G, Rieder M, Van Uum SH 2014. The detection of cortisol in human sweat: implications for measurement of cortisol in hair. Ther. Drug Monit. 36:130–34
    [Google Scholar]
  108. 108.
    Bandodkar AJ, Jeerapan I, Wang J 2016. Wearable chemical sensors: present challenges and future prospects. ACS Sens 1:5464–82
    [Google Scholar]
/content/journals/10.1146/annurev-anchem-061318-114910
Loading
/content/journals/10.1146/annurev-anchem-061318-114910
Loading

Data & Media loading...

  • Article Type: Review Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error