A Hybrid Electronic Nose and Tongue for the Detection of Ketones: Improved Sensor Orthogonality Using Graphene Oxide-Based Detectors

Cavallari, Marco Roberto; Braga, Guilherme S.; Silva, Mauro F. P. da; Izquierdo, José Enrique Eirez; Paterno, Leonardo G.; Dirani, Ely Antonio Tadeu; Kymissis, Ioannis; Fonseca, Fernando Josepetti

doi:10.1109/jsen.2017.2661067

Cited by 33 publications

(16 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Needless to say these VOCs are extremely bad for a healthy environment and life. Therefore, molecular sensing of toxic organic substances has become an important subject and many researchers have been working to design a novel nanomaterials to design functional system to address these environment-related problems [51,52,53,54]. Previous investigations have underlined the fact that a well-designed host nanostructure, particularly high surface area nanoporous materials, are essential for enhancing sensor performance [55,56,57,58,59,60].…”

Section: Discussionmentioning

confidence: 99%

Self-Assembled Fullerene Crystals as Excellent Aromatic Vapor Sensors

Furuuchi

Shrestha

Yamashita

et al. 2019

Sensors

View full text Add to dashboard Cite

Here we report the aromatic vapor sensing performance of bitter melon shaped nanoporous fullerene C60 crystals that are self-assembled at a liquid-liquid interface between isopropyl alcohol and C60 solution in dodecylbenzene at 25 °C. Average length and center diameter of the crystals were ca. 10 μm and ~2 μm, respectively. Powder X-ray diffraction pattern (pXRD) confirmed a face-centered cubic (fcc) structure with cell dimension ca. a = 1.4272 nm, and V = 2.907 nm3, which is similar to that of the pristine fullerene C60. Transmission electron microscopy (TEM) confirmed the presence of a nanoporous structure. Quartz crystal microbalance (QCM) results showed that the bitter melon shaped nanoporous C60 performs as an excellent sensing system, particularly for aromatic vapors, due to their easy diffusion through the porous architecture and strong π–π interactions with the sp2-carbon.

show abstract

Section: Discussionmentioning

confidence: 99%

Self-Assembled Fullerene Crystals as Excellent Aromatic Vapor Sensors

Furuuchi

Shrestha

Yamashita

et al. 2019

Sensors

View full text Add to dashboard Cite

show abstract

“…Other possibility is simple merging of data from physically separated optical and electrochemical sensors [ 24 , 25 ]. In the trend of replacing human sensory panels electronic tongue systems are often combined with sensors for gaseous samples, so called electronic noses [ 26 , 27 , 28 , 29 ], in this way better mimicking traditional way of analysis (evaluation of smell, taste and colour of food samples).…”

Section: Sensors Types and The Resulting Datamentioning

confidence: 99%

Electronic Tongue—A Tool for All Tastes?

et al. 2017

View full text Add to dashboard Cite

Electronic tongue systems are traditionally used to analyse: food products, water samples and taste masking technologies for pharmaceuticals. In principle, their applications are almost limitless, as they are able to almost completely reduce the impact of interferents and can be applied to distinguish samples of extreme complexity as for example broths from different stages of fermentation. Nevertheless, their applications outside the three principal sample types are, in comparison, rather scarce. In this review, we would like to take a closer look on what are real capabilities of electronic tongue systems, what can be achieved using mixed sensor arrays and by introduction of biosensors or molecularly imprinted polymers in the matrix. We will discuss future directions both in the sense of applications as well as system development in the ever-growing trend of low cost analysis.

show abstract

“…P3HT can be also integrated to poly(2,5-bis(3tetradecylthiophene-2-yl)thieno[3, 2-b]thiophene) (PBTTT), and graphene oxide composites (e.g. metal oxides and starch) to form e-noses [38][39][40]. One of the most interesting application lies in the detection of water contaminants [41].…”

Section: B Flexible Transistors Under Stressmentioning

confidence: 99%

Stability of Polythiophene-Based Transistors upon Bending for Gas Sensing Applications

Zanchin

Cavallari

Fonseca

2021

JICS

Self Cite

View full text Add to dashboard Cite

It is presented herein a fabrication procedure for organic thin film transistors over flexible substrates, as well as an evaluation of the electrical performance upon bending stresses. Top gate/bottom contact flexible transistors of poly(3-hexylthiophene) (P3HT) were successfully fabricated, by carefully tuning organic films drying temperatures, photolithography solvents and the pattern of electrode pads. The transistors were processed over both rigid and flexible substrates for comparison purposes. A P3HT hole mobility approaching 0.01 cm2/Vs was observed for all devices and even on different substrates. In spite of a current modulation of ca. 10, P3HT over poly(ethylene terephthalate) (PET) featured transistor behavior upon bending down to a curvature radius of 8 mm. Bending direction, however, produced different effects on the transistor characteristics, especially on gold electrodes.

show abstract

A Hybrid Electronic Nose and Tongue for the Detection of Ketones: Improved Sensor Orthogonality Using Graphene Oxide-Based Detectors

Cited by 33 publications

References 45 publications

Self-Assembled Fullerene Crystals as Excellent Aromatic Vapor Sensors

Self-Assembled Fullerene Crystals as Excellent Aromatic Vapor Sensors

Electronic Tongue—A Tool for All Tastes?

Stability of Polythiophene-Based Transistors upon Bending for Gas Sensing Applications

Contact Info

Product

Resources

About