WS.4 - Wearable monitoring of wound pH through a flexible, fibre- based pH sensor

Smith, Rachel E.; Ward, Nathaniel; Varcoe, John R.; Crean, Carol; Hingley‐Wilson, Suzie

doi:10.5162/imcs2018/ws.4

Cited by 1 publication

(4 citation statements)

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“…Those studies concluded that no significant impact is found due to the presence of ions like K, Na, which enhances the functionality of the sensor for wearable applications. [46,113] Temperature is another relevant factor to be considered for pH sensing, however for the on-body measurements, they are relatively less influential as the body temperature remains more or less constant.…”

Section: A Sensing Approach and Property Comparison To Achieve Textil...mentioning

confidence: 99%

“…[ 40–44 ] PANI‐based potentiometric sensors have demonstrated very promising near Nernst sensitivity of around 50–60 mV pH −1 with good repeatability and stability. [ 33,41,45,46 ] Polypyrole, pentacene, and P3HT are also (semi)conducting polymers, which show decent activity toward pH sensing. [ 47–49 ]…”

Section: Introductionmentioning

confidence: 99%

“…[40][41][42][43][44] PANI-based potentiometric sensors have demonstrated very promising near Nernst sensitivity of around 50-60 mV pH À1 with good repeatability and stability. [33,41,45,46] Polypyrole, pentacene, and P3HT are also (semi) conducting polymers, which show decent activity toward pH sensing. [47][48][49] PEDOT:PSS is the most popular conductive polymer in the organic electronics domain due to its wide range of adjustable conductivities, transparency, modifiable bandgap, printability, and biocompatibility.…”

mentioning

confidence: 99%

“…[50][51][52][53] PEDOT:PSS is applied to develop pH sensors, which are described in different research works. [46,[54][55][56] pH sensing is realized by noting the conductivity changes of the PEDOT:PSS layer. [57][58][59] In recent times, organic compounds are increasingly being used in biosensors.…”

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confidence: 99%

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Printed pH Sensors for Textile‐Based Wearables: A Conceptual and Experimental Study on Materials, Deposition Technology, and Sensing Principles

et al. 2021

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Human biofluids contain numerous known physical and chemical biomarkers that play a vital role in diagnosing the human's health status. In healthy conditions, these biofluids maintain a strict pH balance with an efficient regulation, and slight changes in pH can be used as an early detector of malfunction or disease. Sweat is such a biofluid and normal sweat has a pH in the range of pH 4.5-6.8. [1] It is possible to track dehydration [2,3] or risk of diabetes [4] and detect cystic fibrosis [5] with the pH readings of perspiration/sputum/urine.Similarly, wound healing is a complex dynamic and multifaceted process consisting of hemostasis, inflammation, proliferation, and remodeling stages. [6] During these different stages, the wound fluid pH could vary between 4.5 and 8.5, [7,8] depending on the type of wound and its complexities in healing. A recent report indicates that the wound management expenditure has grown up to 4% of the health budget contribution in Europe. [9] However, with the help of accurate determination of the wound's pH, very essential physiological information can serve as a source to simplify the entire wound diagnosis and treatment practice. [10][11][12] pH is a measure of acidity or basicity, and in 1909, Sørensen defined the pH scale as the H þ ion molar concentration on a negative logarithm scale. [13] In the same year, scientists developed a pH sensitive glass electrode. [14] Arnold Beckman designed the very first commercial pH measurement system in 1936, which brought about the production of commercial pH meters. [15] It consisted of glass electrodes where the potential difference between the working and reference electrodes indicate the analyte's pH. Those sensor systems are highly sensitive to H þ ions and stable, however, they are fragile, bulky and do not have a suitable form factor to be incorporated for human body in situ measurements. pH sensors

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Section: A Sensing Approach and Property Comparison To Achieve Textil...mentioning

confidence: 99%