A5025809946- Advanced Chemical Sensor Technologies
- Analytical Chemistry and Chromatography
- Ferroelectric and Piezoelectric Materials
- Microwave Dielectric Ceramics Synthesis
- Biochemical Analysis and Sensing Techniques
- Spectroscopy and Chemometric Analyses
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Acoustic Wave Resonator Technologies
- Bioinformatics and Genomic Networks
- Gene Regulatory Network Analysis
- Tea Polyphenols and Effects
- Banana Cultivation and Research
- Indigenous Knowledge Systems and Agriculture
- Gene expression and cancer classification
- Electrochemical Analysis and Applications
- Essential Oils and Antimicrobial Activity
- Electronic and Structural Properties of Oxides
- Air Quality Monitoring and Forecasting
- Vehicular Ad Hoc Networks (VANETs)
- Multiferroics and related materials
- Postharvest Quality and Shelf Life Management
- Insect Pheromone Research and Control
- Dielectric properties of ceramics
- Microbial Metabolic Engineering and Bioproduction
Jadavpur University
2015-2024
This paper presents a new methodology to monitor the fermentation process and detect optimum time of crush tear curl black tea with voltammetric electronic tongue. An tongue an array five noble metal working electrodes has been developed for this purpose. A suitable large amplitude pulse waveform employed probing chemical changes in samples under fermentation. Good correlation between responses biochemical obtained by principal component analysis (PCA) during various stages The profile...
A voltammetric electronic tongue (E-tongue) has been used to detect the optimum fermentation time (OFT) of crush tear curl black tea. An E-tongue with an array five noble metal working electrodes developed for this purpose. suitable large amplitude pulse waveform is and a simple feature extraction technique based on charge activity proposed. The principal component analysis reveals significant correlation between responses biochemical changes during various stages fermentation. Principal...
Geraniol is one of the important qualities determining volatile components black tea. This paper presents a quartz crystal microbalance sensor to detect geraniol from tea aroma. The developed using β-cyclodextrin (β-CD). β-CD flavor encapsulating material with toroidal bucket-like structure, whose inside-cavity hydrophobic and outside hydrophilic it found be suitable coating for detecting geraniol. Extensive experiments have been carried out observed that offers better sensitivity in...
This paper aims to develop a selective molecularly imprinted polymer (MIP) layer combined with quartz crystal microbalance sensor for the detection of 3-Carene, significant aroma compound mango. The proposed is prepared from co-polymer methacrylic acid and divinylbenzene, it 3-Carene. MIP template was synthesized deposited onto platform by proper functionalizing gold electrode using 2-propene 1- thiol. developed material characterized fourier transform infra-red, scanning electron...
Methyl salicylate plays an important role in the constitution of black tea aroma. This paper presents a quartz crystal microbalance (QCM) sensor to detect methyl from The is developed using maltodextrin (MDEX). organic ester, naturally produced by many species plants. It used as fragrance, foods and beverages, ointments. Extensive experiments have been carried out with MDEX-coated QCM it observed that offers better sensitivity for comparison other constituents like linalool, geraniol,...
Ripeness monitoring of tomato is very important due to the biosynthesis a carotenoid Lycopene that increases with maturity process. The ripening stages can be estimated by smell it generates during particular stages. This paper aims detection Trans-2-hexenal, an volatile help quartz crystal microbalance sensor. A coating material formed chemical reaction process pentafluorobenzyl bromide (PFBBr), polyethylene glycol 6000 (PEG 6000), tri-ethyl amine and chloroform has been developed for this...
Mango possesses an elegant smell and attracts consumers due to its high nutritive medicinal benefits. A proper monitoring of maturity stages mango is required increase the shelf life boost consumer acceptability. This paper aims discriminate three cultivars based on aroma using quartz crystal microbalance (QCM) E-nose, which can ripening stages.
This paper demonstrates an IoT based architecture for air quality monitoring with the help of Unmanned Aerial Vehicle. The toxic gas detection sensor array is mounted on UAV better data and accurate localization. A modular hub has been designed using MSP430 series microcontroller establishing communication between aerial sensors housed drone module nRF24L01. storage processing facilities have implemented cloud set-up Amazon Web Services Elastic Computing (AWS EC2) Instance. Finally, a GUI...
β-myrcene is one of the important terpene hydrocarbons emitted in substantial amounts from mango. In this regard, an ethyl cellulose modified quartz crystal microbalance (QCM) sensor has developed to detect The exhibits a linear sensing rage 10-1000 ppm with sensitivity factor 0.1 Hz/ppm. limit detection was 1.68 ppm. Furthermore, found be selective toward target analyte respect other volatile organic compounds present mango selectivity 42.98% at 500 response further correlated obtained gas...
With immeasurably increasing number of vehicles on the road day by day, deadly accidents that cause significant loss lives, is also increasing. So, various researchers have paid attention in development some safety application or accident avoidance system order to minimize such fatalities. Among existing applications, image-processing based techniques can perform well only if vehicle line-of-sight with camera and their performances sufficiently worsen hearse weather conditions like dense...
In this work, pellet samples of (Ba 1−x Ca x Zr 0.1 Ti 0.9 )O 3 , (0.140 ≤ 0.160) were prepared using solid-state reaction route with double sintering. The dielectric and structural properties the measured, from room temperature to 250 °C, at different frequencies, in range 10–1000 KHz. A peak shifting anomaly X-ray diffraction peaks patterns, an anomalous change slope c/a vs plot, observed minimum values constant, loss conductivity compositions show a strong compositional dependent...
Thin films were deposited, on quartz and p-Si (100) substrates, by radio frequency (RF) sputtering of ceramic barium calcium zirconate titanate [(Ba 1−z Ca z )(Zr 0.1 Ti 0.9 )O 3 ], (z = 0.155), target. The as-deposited annealed for one hour at different temperatures, between 500 °C 800 °C. occurrence film crystallization was observed annealing above 600 However, peeled out structure, optical transmittance, dielectric constant leakage current the prepared (hereafter referred to as BCZT...
Ceramic pellets of (Ba 1−k Ca k )(Zr 1−z Ti z )O 3, (k = 0.140–0.160, 0.9) were prepared via solid-state reaction technique followed by double sintering. The impedance measurements carried out at different temperatures and frequencies (12–1000 kHz). NTCR nature exhibits the semiconducting behavior BCZT ceramics in measured temperature range. also has a considerable impact on relaxing process. characteristics Nyquist plots show that bulk grain boundary effects exist ceramics. conductivity...
In this work, pellet samples of barium calcium zirconate titanate (Ba1-xCaxZr0.1Ti0.9O3, x=0.065) were prepared using solid state reaction route with double sintering. The structural and piezoelectric properties measured. Further, SEM EDAX analysis observed. With different sintering temperature, the density grain size changed further, their effect in has been For samples, converse constant (d33*) decreased increase temperature. was measured highest (153 pm/V) at 1300?C.
The development of a Quartz crystal Microbalance (QCM) sensor-based data acquisition system (DAS) along with Graphical user interface (GUI) for proper sensing functionality has been described in this work. QCM gas sensor is widely used nowadays the detection Volatile Organic compounds (VOC) due to its high sensitivity, linearity and ease fabrication VOC specific sensors. working model comprises ARM-M4 MK20DX256VLH7 microcontroller or processing from carried out using Raspberry Pi 2B. A...