Journal ArticleDOI
Novel lactate and pH biosensor for skin and sweat analysis based on single walled carbon nanotubes
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TLDR
Carbon nanotubes (CNTs) were functionalized and employed in an electrochemical cell to serve as a biosensor to specifically detect either lactate or pH in an electrolyte solution of artificial sweat as discussed by the authors.Abstract:
Carbon nanotubes (CNTs) were functionalized and employed in an electrochemical cell to serve as a biosensor to specifically detect either lactate or pH in an electrolyte solution of artificial sweat. They were functionalized with the carboxyl group ( COOH) to detect pH and the enzyme lactate oxidase (LOX) to detect lactate. All CNT samples were characterized to compare the electrodes before and after functionalization. Fourier transform infrared spectroscopy (FTIR) was used to verify the attachment of both COOH and LOX to the respective carbon nanotubes samples. Scanning electron microscopy (SEM) was used to examine the structure of the CNT–lactate electrode. Square wave voltammetry proved to be the best template to use to sense these target analytes. The functionalized CNT–COOH electrode displayed a linear response to pH 1–10, with a negative voltage shift corresponding to an increase in pH. Two types of lactate sensors were fabricated, both of which exhibited an increase in current corresponding to an increase in lactate concentration. The functionalized CNT–LOX on a glassy carbon electrode displayed an amperometric response in the range of 1–4 mM lactate. The CNT–LOX on a silicon/indium tin oxide (Si/ITO) substrate displayed an amperometric response in the range of 0.01–0.05 M lactate.read more
Citations
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Journal ArticleDOI
Advances in carbon nanotube based electrochemical sensors for bioanalytical applications.
TL;DR: In this paper, the use of carbon nanotubes (CNTs) as electrode materials has been explored for the detection of important analytes with improved detection sensitivity and selectivity.
Journal ArticleDOI
Adhesive RFID Sensor Patch for Monitoring of Sweat Electrolytes
Daniel P. Rose,Michael Ratterman,Daniel K. Griffin,Linlin Hou,Nancy Kelley-Loughnane,Rajesh R. Naik,Joshua A. Hagen,Ian Papautsky,Jason Heikenfeld +8 more
TL;DR: An adhesive radio-frequency identification (RFID) sensor bandage (patch) is reported, which can be made completely intimate with human skin, a distinct advantage for chronological monitoring of biomarkers in sweat.
Journal ArticleDOI
BIOTEX—Biosensing Textiles for Personalised Healthcare Management
Shirley Coyle,King Tong Lau,Niall M. Moyna,Donal J. O’Gorman,Dermot Diamond,F. Di Francesco,D. Costanzo,Pietro Salvo,Maria Giovanna Trivella,Danilo De Rossi,N. Taccini,Rita Paradiso,J.-A. Porchet,Alessandro Ridolfi,Jean Luprano,Cyril Chuzel,T. Lanier,F. Revol-Cavalier,S. Schoumacker,V. Mourier,I. Chartier,R. Convert,H. De-Moncuit,C. Bini +23 more
TL;DR: A wearable sensing system has been developed that integrates a textile-based fluid handling system for sample collection and transport with a number of sensors including sodium, conductivity, and pH sensors, which has huge implications for the field of sports and human performance.
Journal ArticleDOI
Electrochemical Sensors for Clinic Analysis.
TL;DR: This review addresses the principles behind electrochemical sensor design and fabrication, and introduces recent progress in the application of electrochemical sensors to analysis of clinical chemicals such as blood gases, electrolytes, metabolites, DNA and antibodies, including basic and applied research.
Journal ArticleDOI
Organic electrochemical transistor incorporating an ionogel as a solid state electrolyte for lactate sensing
Dion Khodagholy,Vincenzo F. Curto,Kevin J. Fraser,M. Gurfinkel,Robert Byrne,Dermot Diamond,George G. Malliaras,Fernando Benito-Lopez,Róisín M. Owens +8 more
TL;DR: In this article, the use of an organic electrochemical transistor for detection of lactate (an essential analyte in physiological measurements of athlete performance) by integration of a room temperature ionic liquid in a gel-format, as a solid-state electrolyte.
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