Electrically Transduced Sensors Based on Nanomaterials (2012–2016)

Chandran, Girija Thesma; Li, Xiaowei; Ogata, Alana F.; Penner, Reginald M.

doi:10.1021/acs.analchem.6b04687

Cited by 77 publications

(57 citation statements)

References 251 publications

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“…Due to the lack of specificity, two models for the statistical data analysis on a large set of PAs (principal component analysis and partial least square-discriminant analysis, PLS-DA) were proposed to properly evaluate fish spoilage. An interesting system based on chemiresistors was applied for the determination of fish degradation (Chandran et al 2017). The sensor measured the resistance variation following the direct interaction of an analyte molecule with the sensor surface.…”

Section: Biosensors For the Determination Of Polyamines In Fishmentioning

confidence: 99%

Endogenous and food-derived polyamines: determination by electrochemical sensing

et al. 2018

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Polyamines (PAs) are involved in a variety of fundamental physio-pathologic processes. The concentration of these polycations in organs and tissues depends on their endogenous production and oxidation rates, and on their intake from foods. Besides being largely accepted as markers for the progress of several pathologies, PAs may exert themselves different effects on humans, ranging from being positive to be drastically detrimental depending on the organism conditions. Thus, if the determination of polyamines content in tissue samples is of great importance as they could be indicators of several diseases, their quantification in food is fundamental for modulating the diet to respond to a specific human health status. Thus, the determination of PA content in food is increasingly urgent. Standard analytical methods for polyamine quantification are mainly based on chromatography, where high-performance liquid chromatography and gas chromatography are the most often used, involving pre-column or post-column derivatization techniques. Driven by the growing need for rapid in situ analyses, electrochemical biosensors, comprising various combinations of different enzymes or nanomaterials for the selective bio-recognition and detection, are emerging as competitors of standard detection systems. The present review is aimed at providing an up-to-date overview on the recent progresses in the development of sensors and biosensors for the detection of polyamines in human tissues and food samples. Basic principles of different electrochemical (bio)sensor formats are reported and the applications in human tissues and in foods was evidenced.

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Section: Biosensors For the Determination Of Polyamines In Fishmentioning

confidence: 99%

Endogenous and food-derived polyamines: determination by electrochemical sensing

et al. 2018

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“…Besides carrier density, other crucial carrier characteristics of gas-sensing materials such as carrier mobility might also play a key role for gas sensing. [9][10][11][12] It has been shown that hydrogen detection using platinum nanowires is related to adsorption-induced degradation of carrier mobility. 9,10 Actually, a similar adsorption-origin of the carrier mobility degradation also exists in inorganic semiconductor gas-sensing, but only being limited on the surface.…”

Section: Introductionmentioning

confidence: 99%

Carrier Mobility-Dominated Gas Sensing: A Room-Temperature Gas-Sensing Mode for SnO₂ Nanorod Array Sensors

Zhao

et al. 2018

ACS Appl. Mater. Interfaces

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Adsorption-induced change of carrier density is presently dominating inorganic semiconductor gas sensing, which is usually operated at a high temperature. Besides carrier density, other carrier characteristics might also play a critical role in gas sensing. Here, we show that carrier mobility can be an efficient parameter to dominate gas sensing, by which room-temperature gas sensing of inorganic semiconductors is realized via a carrier mobility-dominated gas-sensing (CMDGS) mode. To demonstrate CMDGS, we design and prepare a gas sensor based on a regular array of SnO nanorods on a bottom film. It is found that the key for determining the gas-sensing mode is adjusting the length of the arrayed nanorods. With the change in the nanorod length from 340 to 40 nm, the gas-sensing behavior changes from the conventional carrier-density mode to a complete carrier-mobility mode. Moreover, compared to the carrier density-dominating gas sensing, the proposed CMDGS mode enhances the sensor sensitivity. CMDGS proves to be an emerging gas-sensing mode for designing inorganic semiconductor gas sensors with high performances at room temperature.

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“…This imposes some strict requirements on sensors, such as reliability, fast response time, and ultra‐sensitivity. Many efforts have been made to fulfill these requirements and further enhance the sensor properties . Among these efforts, nanofibers are a hot topic in recent advanced sensor design .…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Nanofibers as Optical Sensors

Schoolaert

Hoogenboom

Clerck

2017

Adv Funct Materials

118

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Sensors play a major role in many applications today, ranging from biomedicine to safety equipment, where they detect and warn us about changes in the environment. Nanofibers, characterized by high porosity, flexibility, and a large specific surface area, are the ideal material for ultrasensitive, fastresponding, and user-friendly sensor design. Indeed, a large specific surface area increases the sensitivity and response time of the sensor as the contact area with the analyte is enlarged. Thanks to the flexibility of membranes, nanofibrous sensors cannot only be applied in high-end analyte detection, but also in personal, daily use. Many different nanofibrous sensors have already been designed; albeit, the most straightforward and easiest-to-interpret sensor response is a visual change in color, which is of particular interest in the case of warning signals. Recently, many researchers have focused on the design of so-called colorimetric nanofibers, which typically involve the incorporation of a colorimetric functionality into the nanofibrous matrix. Many different strategies have been used and explored for colorimetric nanofibrous sensor design, which are outlined in this feature article. The many examples and applications demonstrate the value of colorimetric nanofibers for advanced optical sensor design, and could provide directions for future research in this area.

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Electrically Transduced Sensors Based on Nanomaterials (2012–2016)

Cited by 77 publications

References 251 publications

Endogenous and food-derived polyamines: determination by electrochemical sensing

Endogenous and food-derived polyamines: determination by electrochemical sensing

Carrier Mobility-Dominated Gas Sensing: A Room-Temperature Gas-Sensing Mode for SnO₂ Nanorod Array Sensors

Colorimetric Nanofibers as Optical Sensors

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Electrically Transduced Sensors Based on Nanomaterials (2012–2016)

Cited by 77 publications

References 251 publications

Endogenous and food-derived polyamines: determination by electrochemical sensing

Endogenous and food-derived polyamines: determination by electrochemical sensing

Carrier Mobility-Dominated Gas Sensing: A Room-Temperature Gas-Sensing Mode for SnO2 Nanorod Array Sensors

Colorimetric Nanofibers as Optical Sensors

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Carrier Mobility-Dominated Gas Sensing: A Room-Temperature Gas-Sensing Mode for SnO₂ Nanorod Array Sensors