Structural Properties and Sensing Characteristics of Sensing Materials

Pan, Tung-Ming; Mondal, Somnath

doi:10.1016/b978-0-08-096532-1.01306-6

Cited by 11 publications

(12 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A MOSFET sensor comprises three layers: a silicon semiconductor; a silicon-oxide insulator; and a catalytic metal (usually palladium, platinum, iridium, or rhodium), also called the gate [23]. A MOSFET requires a thin semiconducting layer, which is separated from a gate electrode by the gate oxide dielectric, and also requires source and drain electrodes of width W (channel width) separated by a distance L (channel length) [24].…”

Section: Introductionmentioning

confidence: 99%

Aspects of sustainability and design engineering for the production of interconnected smart food packaging

et al. 2019

View full text Add to dashboard Cite

In the present work, the problem of food wastage and the concept of sustainability are studied. An analysis of Life Cycle Assessment as a tool and of the innovative concept of Cradle to Cradle is also carried out, together with an exhaustive comparison of these two approaches. Based on these concepts, an integrated methodology is proposed for the design of interconnected smart products. The smart packaging systems currently available are studied theoretically and a practical case is analysed using the proposed methodology through the design and Life Cycle Assessment of a smart interconnected container that is able to detect the ethylene emitted by climacteric fruit, thereby minimizing food wastage. For the case under study, a major impact is observed of the selected plastics in the resources category, and of the smart system in the human health category.

show abstract

Section: Introductionmentioning

confidence: 99%

Aspects of sustainability and design engineering for the production of interconnected smart food packaging

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

“…The selectivity of the proposed 5-BSA=N-MIL-53(Al)/CPE sensor is determined in the presence of ascorbic acid as one of the prevalent elements in the plasma that can interfere with the electrochemical determination of some therapeutic elements. 52 The utilized 5-BSA=N-MIL-53(Al)/CPE sensor shows the ability to determine both ascorbic acid and VLP in the same pH 7.0 BRB solution as two separate peaks at 0.35 and 0.85 V, respectively, as shown in Figure S3. Other excipients that are commonly used during tablet manufacturing and can interfere with VLP determination have been determined electrochemically in the presence of 1.0 mM of VLP at pH 7.0 BRB solution separately, as shown in Figure S4.…”

mentioning

confidence: 98%

Sensitive Determination of SARS-COV-2 and the Anti-hepatitis C Virus Agent Velpatasvir Enabled by Novel Metal–Organic Frameworks

et al. 2021

View full text Add to dashboard Cite

Herein, we report on the electrochemical determination of velpatasvir (VLP) as the main constituent of Epclusa, a SARS-COV-2 and anti-hepatitis C virus (HCV) agent, using a novel metal–organic framework (MOF). The NH2-MIL-53(Al) MOF was successfully modified with 5-bromo-salicylaldehyde to synthesize 5-BSA=N-MIL-53(Al) MOF. The synthesized MOF has been characterized using Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy, cyclic voltammetry, square wave voltammetry, and electrochemical impedance spectroscopy. The modified MOF showed higher electrochemical activity and response than the bare NH2-MIL-53(Al) MOF. Compared to the bare carbon paste electrode (CPE), the 5-BSA=N-MIL-53(Al)/CPE platform was shown to enhance the electrochemical oxidation and detection of the anti-SARS-COV-2 and anti-HCV agent. Under optimized conditions, the 5-BSA=N-MIL-53(Al)/CPE platform showed a linear range of 1.11 × 10–6 to 1.11 × 10–7 and 1.11 × 10–7 to 25.97 × 10–6 M Britton–Robinson buffer (pH 7) with a detection limit and limit of quantification of 8.776 × 10–9 and 2.924 × 10–8 M, respectively. Repeatability, storage stability, and reproducibility in addition to selectivity studies and interference studies were conducted to illustrate the superiority of the electrode material. The study also included a highly accurate platform for the determination of VLP concentrations in both urine and plasma samples with reasonable recovery.

show abstract

“…Hysteresis is also known as memory effect where this abnormality is caused by presence of buried OH site beneath the surface of inorganic pH sensitive membrane [20]. Number of buried sites is expected to be lower than available on surface, but H + and OHions can diffuse slowly into the surface [21]. This very slow response resulted in apparent delay or hysteresis effects experienced by the sensing membrane [22].…”

Section: Resultsmentioning

confidence: 99%

Evaluation on the Egfet Ph Sensing Performance of Sol-Gel Spin Coated Titanium Dioxide Thin Film

Zulkefle

Herman²,

Rahman

et al. 2021

Jurnal Teknologi

View full text Add to dashboard Cite

For this study, TiO2 thin film was fabricated using the sol-gel spin coating method. The fabricated film was then applied as a sensing membrane in an extended gate field effect transistor (EGFET) pH sensor system. The pH sensing performance of the sol-gel spin-coated TiO2 was evaluated in terms of sensitivity, linearity, and hysteresis where the value obtained was 58.70 mV/pH, 0.9922, and 86.17 mV respectively. The drift rate of the sample when being measured for 12 consecutive hours was also determined where measurement in pH 4, pH 7, and pH 10 yield drift rate of 1.72 mV/h, 4.14 mV/h, and 6.05 mV/h respectively. Besides that, the TiO2 was characterized for its thickness (24.32 nm) and surface roughness (5.129 nm). From the results obtained, it was found that sol-gel spin-coated TiO2 thin film with thickness between 20 - 29 nm will have high pH sensitivity (more than 50 mV/pH).

show abstract

Structural Properties and Sensing Characteristics of Sensing Materials

Cited by 11 publications

References 96 publications

Aspects of sustainability and design engineering for the production of interconnected smart food packaging

Aspects of sustainability and design engineering for the production of interconnected smart food packaging

Sensitive Determination of SARS-COV-2 and the Anti-hepatitis C Virus Agent Velpatasvir Enabled by Novel Metal–Organic Frameworks

Evaluation on the Egfet Ph Sensing Performance of Sol-Gel Spin Coated Titanium Dioxide Thin Film

Contact Info

Product

Resources

About