Nityananda Das

• M Sc. ( Gold Medalist ) M Phil. Ph D (J U ) RESEARCH AT S N BOSE CENTRE; KOLKATA
• Professor at J K College Purulia

In this work, a hybrid polymerization technique, combining sol-gel polymerization with thermal polymerization, was prescribed for the preparation of graphite supported lawsone-imprinted poly(methyl acrylate) (PMA@HNQ-G) as a sensing material. The imprinted polymer’s morphology, structure, and imprinting endorsement were thoroughly investigated usin...

A novel graphite electrode with molecular imprints was developed for the selective and sensitive detection of piperine in black pepper. The electrode incorporates molecularly imprinted polymer (MIP) layers synthesized using poly (N,N-dimethylacrylamide) (PDMAM) as the monomer, ethylene glycol dimethacrylate (EGDMA) as the cross-linker, and piperine...

In this paper four branded black pepper, denoted as B1, B2, B3 and B4 were experimented using near-infrared (NIR) spectroscopy. NIR spectra were analyzed with multivariate analysis for discrimination and prediction based on piperine concentration (in ppm) measured using reverse phase high performance liquid chromatography (RP-HPLC) as reference val...

Turmeric (Curcuma longa) is a highly valued spice with extensive culinary, medicinal, and cosmetic applications. However, its high market value has led to the common practice of adulteration with cheaper substances, including synthetic dyes like tartrazine. The adulteration of turmeric powder with tartrazine is a significant issue, posing risks to...

In this work, the authors represent a comprehensive approach for the development and validation of a novel graphite-supported molecularly imprinted poly(methyl methacrylate) electrode for the selective and sensitive detection of aloe emodin (AE) in aloe-based cosmetic products. The electrocatalytic activity of the electrode was evaluated using cycl...

The full journal paper is now available through the following personalized link: https://authors.elsevier.com/a/1jxXW,cE91-uf This link provides 50 days of free access to the article, valid until December 5, 2024. Anyone using the link can access and download the final version of the paper directly from ScienceDirect.

BaTiO3 (BTO) is modified by 10 % (mole) BiFeO3 (BFO) and LaMnO3 (LMO) each via a chemical process. Thermogravimetric analysis (TGA) of the precursor mass, X-ray diffraction study (XRD), and scanning electron microscopy (SEM) is performed for the determination of calcination temperature, crystallographic phase, structure, and morphology respectively...

Thymoquinone, a significant component in medicine and the spice industry due to its potent antioxidant properties, is the focus of this paper. The development of a titanium oxide-modified graphite paste electrode is presented for the detection of thymoquinone in black cumin. The electrochemical characteristics of the thymoquinone molecule were expl...

Sawyer Tower circuit for P E Loop study by DC Method

Spherically shaped trimetallic MnAl2O4 (MAO) nanoadsorbent was prepared in an one-pot synthesis process for the removal of excess fluoride from water. The adsorbent was characterized by thermogravimetric analysis (TGA), X-ray diffraction study (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM)...

In this work, a noble metal based platinum (Pt) electrode has been explored to detect one of the important phytochemical Aloe Emodin (AE) in Liliaceae family. A sensitive three-electrode system was equipped to assess the electrochemical behavior of AE using Pt electrode as a working electrode along with silver/silver chloride (saturated KCl) and a...

Fatigue crack growth (FCG) behavior of 7075 T6 aluminum alloy was studied using constant stress intensity factor range (ΔK) envelopes in air and hydrogenating environments. The effects of loading frequency, stress ratio, and ΔK on FCG behavior were studied in the hydrogenating environment. The overall FCG rate was found to be significantly greater...

In this paper, the development of polyacrylic acid (PAA) based molecularly imprinted polymer (MIP) embedded graphite electrode (PAA-MIP/G) and its usage as a sensitive and effective electrochemical sensor for the purpose of sensing of curcumin (CUR) is described. The polymerization process was carried out for preparing the polymer materials using C...

To fabricate a high‐performance and ultrasensitive triboelectric nanogenerator (TENG), choice of a combination of different materials of triboelectric series is one of the prime challenging tasks. An effective way to fabricate a TENG with a single material (abbreviated as S‐TENG) is proposed, comprising electrospun nylon nanofibers. The surface pot...

The novel coronavirus (COVID-19) outbreak has been announced as a “Public Health Emergency of International Concern” and further identified as a pandemic by the World Health Organization. Considering the unprecedented spread of the disease across the world, the development of noncontact and unobtrusive methods for quick screening of potential carri...

Since the early detection of COVID-19 infection in December 2019, the number of infected persons has been increasing day by day. In this present scenario, people worldwide are reorganizing their life taking safety precautions like doing frequent sanitization, wearing face masks, and avoiding social gathering to protect themselves from getting infec...

Identification of naturally ripened mango using a pocket-friendly, portable aroma detection system (Aroma e-Sense) has been presented in this work. The study found 2, 5-Dimethyl-4-hydroxy-3(2 H)-furanone (DHF), a biomarker of artificially ripened (AR) mango. Hereto, a DHF imprinted polymer coupled to a quartz crystal microbalance (DHFIP-QCM) sensor...

The pipeline steels which are used for transportation of natural gas and crude oil suffer from hydrogen damage at their internal as well as external surfaces. The internal surfaces of pipelines are generally affected due to hydrogen induced cracking and the external surfaces due to the soil environmental conditions which cause stress corrosion crac...

Magneto-electric composites of two distinct phases, ferrimagnetic-piezoelectric system with general compositional formula (x) ferromagnetic + (1-x) piezoelectric were synthesized using a hybrid technique, mechano-chemical method by sintering the mixtures of piezo-electric BaTiO3 (BTO) and ferri-magnetic Mg0.2Cu0.5Zn0.3Fe2O4 (MCZF). Here, ferri-magn...

Abstract We propose an atomic model in close-loop configuration, which exhibits controllable symmetric and asymmetric evolution of significantly enhanced diffraction peaks of the weak probe beam in an opto-atomic grating at far-field regime. Such results are obtained by the linear and nonlinear modulation of the intensities of the diffraction peaks...

Usage of a face mask has become mandatory in many countries after the outbreak of SARS-CoV-2, and its usefulness in combating the pandemic is a proven fact. There have been many advancements in the design of a face mask and the present treatise describes a face mask in which a simple triboelectric nanogenerator (TENG) with an electrocution layer ma...

Usage of a face mask has become mandatory in many countries after the outbreak of SARS-CoV-2, and its usefulness in combating the pandemic is a proven fact. There have been many advancements in the design of a face mask and the present treatise describes a face mask in which a simple textile triboelectric nanogenerator (TENG) serves the purpose of...

We propose a multi-field-coupled atomic model that exhibits controllable $symmetric$ and $asymmetric$ evolution of significantly enhanced diffraction peaks in an opto-atomic grating at far-field regime. Such results are obtained by the linear and nonlinear modulation of the intensities of the diffraction peaks as a result of multi-wave-mixing-induc...

Physical experiments need optimum to get results with higher accuracy. Here the experiment were done to show that to find out Planck's constant 'h' by using Light Emitting Diodes (LED), using the well known formula eV=hv, doesn't give the value of h with sufficient accuracy at all voltage. This needs the exact value of the voltage at which the prob...

Ni⁺² doped Magnesium ferrite nano-particles having the basic composition NixMg1-xFe2O4(x=0, 0.25, 0.5, 0.75, 1) were synthesized using nitrate-citrate method, which is also known as auto-combustion method. Structural, dielectric and magnetic properties of these samples, sintered at 900 °C were investigated. The structure and phase of the synthesize...

A new approach for achieving two – dimensional (2D) atom localization microscopy based on the projection of three – dimensional (3D) localization in the plane of the detector is described in the present work. Spatial variation of the position-dependent 2D-localization pattern in the xy-plane is obtained with the shifting of the position of the dete...

A driven two-level atomic system is exhaustively studied to explore the field-induced superposition effects in atom localization via resonance fluorescence spectroscopy. To this end, different field arrangements are incorporated as a combination of spatially aligned standing wave fields and traveling-wave field. Different localization patterns evol...

Coherent control of optical effects are studied in a quantum dot molecule comprising triple quantum dots with the consideration of symmetric tunneling induced coupling. We have analyzed the origin of such coherence effects in terms of perturbative influence of the array of tunneling induced coherence terms associated with the semiclassical density...

Coherent control of optical effects are studied in a quantum dot molecule comprising triple quantum dots with the consideration of symmetric tunneling induced coupling. We have analyzed the origin of such coherence effects in terms of perturbative influence of the array of tunneling induced coherence terms associated with the semiclassical density...

A scheme is proposed to realize three-dimensional (3D) atom localization in a driven two-level atomic system via resonance fluorescence. The field arrangement for the atom localization involves the application of three mutually orthogonal standing-wave fields and an additional traveling-wave coupling field. We have shown the efficacy of such field...

We have simulated the similar features of the well-known classical phenomena in quantum domain under the formalism of probability amplitude method. The identical pattern of interference fringes of a Fabry–Perot interferometer (especially on reflection mode) is obtained through the power-broadened spectral line shape of the population distribution i...

This article focuses on approach that provides visualization of machine–part clustering in cellular manufacturing system based on sequence of operation. We propose a novel cell formation approach, namely the growing hierarchical self-organizing map (GHSOM), for dealing with 14 benchmark problems from literature. The performance of the proposed algo...

In this paper, a novel and potent approach of the use of Growing Hierarchical Self-Organizing Map (GHSOM) for organization and visualization of machine-part cell formation has been proposed for the first time. The results are compared with the ones obtained by the ART1 algorithm on 14 problems taken from the literature. The equivalent code was writ...

Machines in many manufacturing units are often grouped into cells in order to lower work in process levels, reduce set-up and production lead-time while retaining flexibility for new products. Such cells are formed based on the similarities of machines and parts to be processed in them. In this paper the Self Organising Map (SOM) method, a techniqu...

We had earlier presented a computationally feasible and fast technique for obtaining the electronic structure of random alloys which allowed us to incorporate short-ranged order and effects like clustering and local lattice distortions due to size mismatch effects. The technique combined the augmented space recursion with the tight-binding LMTO. We...

In this communication we study the convergence of the augmented-space recursion and illustrate the errors produced because of using only a finite part of the full augmented space and termination of the recursion after a finite number of steps. We illustrate this by using a TB-LMTO-based augmented-space formalism for a 50 - 50 AgPd alloy and studyin...

We present here a graphical approach to the Feenberg multiple-scattering expansion and discuss examples of Hamiltonians with topological and substitutional disorder where the path-contribution technique allows us to understand the effects of such disorder and generate physically relevant approximations.

The magnetization of Ni_{1-x}Mo_{x} single crystals with x=4,6,8 and 10 % by weight have been measured at 4.2K using a vibrating sample magnetometer and a Superconducting Quantum Interference Device (SQUID). The magnetization of the alloy at these low concentrations and at 0 K have been theoretically determined by using the tight-binding linearized...