Analysis of diabetic patient's breath with conducting polymer sensor array

Yu, Jae‐Young; Byun, Hyung‐Gi; So, Myung-Suk; Huh, Jeung-Soo

doi:10.1016/j.snb.2005.01.040

Cited by 134 publications

(69 citation statements)

References 7 publications

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“…This is a possible way to screen for diabetes. 149,150 (2) In contrast, the substance of interest for the detection of asthma is an inorganic gas, namely, nitric oxide. [151][152][153] By means of an electronic nose, patients with asthma can be clearly discriminated from the control group, whereas the accuracy of classification of severity is less reliable.…”

Section: Disease Diagnosismentioning

confidence: 99%

Electronic Nose: Current Status and Future Trends

2008

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Section: Disease Diagnosismentioning

confidence: 99%

Electronic Nose: Current Status and Future Trends

2008

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“…Whether the gas sensors are derived from polymers [13], silicon [14], graphene oxide [15], carbon nanomaterials [10], or metal-oxide semiconductors [16], and whether they target the automotive industry [7,8,17,18], food preservation [19,20], wearable technology [21][22][23][24][25] or other fields of high societal importance, they should all fulfil the following basic requirements in order to function optimally: high sensitivity, high selectivity, fast response, low energy consumption and, ideally, low fabrication cost [2,26]. While metal-oxide semiconductor gas sensors are the most common, commercially available and displaying high levels of sensitivity [27][28][29], they operate at high temperatures, may not ensure sufficient selectivity, and the fabrication technique is often complex [2,30].…”

Section: Introductionmentioning

confidence: 99%

Non-electronic gas sensors from electrospun mats of liquid crystal core fibres for detecting volatile organic compounds at room temperature

Sharma

Lagerwall

2016

Liquid Crystals

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Non-woven mats comprised of liquid crystal-functionalised fibres are coaxially electrospun to create soft gas sensors that function non-electronically, thus requiring no power supply, detecting organic vapours at room temperature. The fibres consist of a poly(vinylpyrrolidone) (PVP) sheath surrounding a core of nematic 4-cyano-4ʹpentylbiphenyl (5CB) liquid crystal. Several types of mats, containing uniformly cylindrical or irregular beaded fibres, in uniform or random orientations, are exposed to toluene vapour as a representative volatile organic compound. Between crossed polarisers all mats respond with a fast (response time on the order of a second or faster) reduction in brightness during gas exposure, and they return to the original state upon removal of the gas almost as quickly. With beaded fibres, the response of the mats is visible even without polarisers. We discuss how variations in fibre spinning conditions such as humidity level and the ratio of core-sheath fluid flow rates can be used to tune fibre morphology and thereby the response. Considering future development perspectives, we argue that fibres turned responsive through the incorporation of a liquid crystal core show promise as a new generation of sensors with textile form factor, ideal for wearable technology applications. ARTICLE HISTORY

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“…Clinically, electronic noses are used to evaluate halitosis. (12) They provide useful analytical controls by analyzing the breath (13) exhaled by patients with diabetes, as well as analyzing their urine. (14) They have an accuracy as high as 88% in detecting infections of the ear, nose, and throat.…”

Section: Electronic Nosesmentioning

confidence: 99%

Recent Advances in Olfactory Receptor (OR) Biosensors and Cell Signaling Cascade Amplification Systems

2018

Sensors and Materials

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There are a variety of methods to detect odorant molecules, including gas chromatography (GC) and its related coupled techniques, electronic noses, and olfactory receptor (OR)-based biosensors. Nevertheless, studies in which cell and cell signaling amplifier systems were directly utilizied to detect odors are very few. In this review, we aim to provide some references and suggestions for researchers in related fields by summarizing OR sensors and olfactory cell signaling cascade amplifier systems. In this paper, we summarize the detection methods for odorants, introduce the research and progress on OR sensors, and present a proposal of utilizing cell or tissue signaling cascade amplifier systems to amplify electrochemical signals and the use of the G protein signaling cascade amplifier system to prepare electrochemical biosensors. In recent years, the detection technology of electrochemical sensors has matured. Meanwhile, olfactory sensation within organisms basically transfer nerve signals or metabolic endocrine signals in the form of electrochemical signals. Therefore, ORs combined with cell signaling cascade amplifier systems, as well as electrochemical sensors of signal cascade amplifier systems, have incredible prospects for development and application. The proposal of OR electrochemical biosensors and their cell signaling cascade amplifier systems, provides a new idea and a quantitative method for the detection and assessment of odorants and their physiologic processes in the nervous system.

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Analysis of diabetic patient's breath with conducting polymer sensor array

Cited by 134 publications

References 7 publications

Electronic Nose: Current Status and Future Trends

Electronic Nose: Current Status and Future Trends

Non-electronic gas sensors from electrospun mats of liquid crystal core fibres for detecting volatile organic compounds at room temperature

Recent Advances in Olfactory Receptor (OR) Biosensors and Cell Signaling Cascade Amplification Systems

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