Hydrazone -based Schiff base dual chemosensor for recognition of Cu2+ and F- by 1:2 demultiplexer, half adder, half subtractor, molecular keypad lock and logically reversible transfer gate logic circuits and its application as test kit

2022 ◽  
pp. 113797
Author(s):  
Raziyeh Arabahmadi
Keyword(s):  
Schiff Base ◽  
Logic Circuits ◽  
Half Adder ◽  
Test Kit ◽  
Reversible Transfer

Structural characterization of a fluorescein hydrazone molecular switch with application towards logic gates

2018 ◽  
Vol 42 (22) ◽  
pp. 18050-18058 ◽  
Author(s):  
Juan D. Villada ◽  
Richard F. D’Vries ◽  
Mario Macías ◽  
Fabio Zuluaga ◽  
Manuel N. Chaur
Keyword(s):  
Structural Characterization ◽  
Metal Cations ◽  
Logic Gates ◽  
Molecular Switch ◽  
Logic Circuits ◽  
X Ray ◽  
Ph Changes ◽  
X Ray Crystallography ◽  
Half Adder

A new polymorph of fluorescein hydrazone was fully characterized via single X-ray crystallography. In addition, multiple logic circuits and a Half-Adder operator were designed using the fluorescence and UV-Vis switching responses of the fluorescein compound to different metal cations and pH changes.

scholarly journals Polydentate Schiff Base Ligands and Their La(III) Complexes: Synthesis, Characterization, Antibacterial, Thermal, and Electrochemical Properties

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Ali E. Şabik ◽  
Muharrem Karabörk ◽  
Gökhan Ceyhan ◽  
Mehmet Tümer ◽  
Metin Dığrak
Keyword(s):  
Antimicrobial Activity ◽  
Schiff Base ◽  
Electrochemical Properties ◽  
Antimicrobial Activities ◽  
Nitrogen Atmosphere ◽  
Spectroscopic Methods ◽  
Schiff Base Ligands ◽  
One Step ◽  
The One ◽  
Reversible Transfer

We synthesized the Schiff base ligands H2L1–H2L4 and their La(III) complexes and characterized them by the analytical and spectroscopic methods. We investigated their electrochemical and antimicrobial activity properties. The electrochemical properties of the ligands H2L1–H2L4 and their La(III) complexes were studied at the different scan rates (100 and 200 mV), different pH ranges (), and in the different solvents. The electrooxidation of the Schiff base ligands involves a reversible transfer of two electrons and two protons in solutions of pH up to 5.5, in agreement with the one-step two-electron mechanism. In solutions of pH higher than 5.5, the process of electrooxidation reaction of the Schiff base ligands and their La(III) complexes follows an ECi mechanism. The antimicrobial activities of the ligands and their complexes were studied. The thermal properties of the metal complexes were studied under nitrogen atmosphere in the range of temperature 20–1000°C.

scholarly journals Integrated non-volatile plasmonic switches based on phase-change-materials and their application to plasmonic logic circuits

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rajib Ratan Ghosh ◽  
Anuj Dhawan
Keyword(s):  
Phase Change ◽  
Building Blocks ◽  
Logic Circuits ◽  
Optical Data Storage ◽  
Plasmonic Waveguide ◽  
Optical Data ◽  
Electro Optic ◽  
Half Adder ◽  
Logic Operations ◽  
Plasmonic Switches

AbstractIntegrated photonic devices or circuits that can execute both optical computation and optical data storage are considered as the building blocks for photonic computations beyond the von Neumann architecture. Here, we present non-volatile hybrid electro-optic plasmonic switches as well as novel architectures of non-volatile combinational and sequential logic circuits. The electro-optic switches consist of a plasmonic waveguide having a thin layer of a phase-change-material (PCM). The optical losses in the waveguide are controlled by changing the phase of the PCM from amorphous to crystalline and vice versa. The phase transition process in the PCM can be realized by electrical threshold switching or thermal conduction heating via external electrical heaters or the plasmonic waveguide metal itself as an integrated heater. We have demonstrated that all logic gates, a half adder circuit, as well as sequential circuits can be implemented using the plasmonic switches as the active elements. Moreover, the designs of the plasmonic switches and the logic operations show minimum extinction ratios greater than 20 dB, compact designs, low operating power, and high-speed operations. We combine photonics, plasmonics and electronics on the same platform to design an effective architecture for logic operations.

Colorimetric and fluorimetric response of Schiff base molecules towards fluoride anion, solution test kit fabrication, logical interpretations and DFT-D3 study

2015 ◽  
Vol 17 (31) ◽  
pp. 20288-20295 ◽  
Author(s):  
Pritam Ghosh ◽  
Biswajit Gopal Roy ◽  
Saibal Jana ◽  
Subhra Kanti Mukhopadhyay ◽  
Priyabrata Banerjee
Keyword(s):  
Schiff Base ◽  
Fluoride Anion ◽  
Test Kit ◽  
Anion Sensors

Two newly synthesized Schiff base molecules are herein reported as anion sensors.

“Test kit” for detection of biologically important anions: A salicylidene-hydrazine based Schiff base

2013 ◽  
Vol 102 ◽  
pp. 314-318 ◽  
Author(s):  
Sasanka Dalapati ◽  
Md Akhtarul Alam ◽  
Sankar Jana ◽  
Saswati Karmakar ◽  
Nikhil Guchhait
Keyword(s):  
Schiff Base ◽  
Test Kit

Designing and Modeling of Logic Circuits Based on Switching of the Gated Oligo-Phenylenevinylene Molecule

2017 ◽  
Vol 46 ◽  
pp. 82-92 ◽  
Author(s):  
Saleh Safapour ◽  
Reza Sabbaghi-Nadooshan ◽  
Ali Asghar Shokri
Keyword(s):  
Molecular Electronics ◽  
Field Effect Transistors ◽  
Circuit Simulation ◽  
Logic Gates ◽  
Full Adder ◽  
Logic Circuits ◽  
Simulation Software ◽  
Molecular Systems ◽  
Half Adder ◽  
The Cost

Molecular electronics seeks to decrease the cost, power consumption and size of devices, using a variety of approaches. However, few attempts have been made to address circuit simulation. The availability of common semiconductor components means they can be used for modeling and simulating molecular circuits to speed progress in molecular electronics. The present study examines the switching of a gated oligo-phenylenevinylene (OPV) molecule as a NMOS molecular transistor, resistance as an indicator of methyl molecules, and the linking of these abilities using LTspice simulation software. The circuit simulation of molecules of basic logic gates, half-adder, full-adder, and multiplier logic circuits are carried out. The numerical results may shed light on the next applications of molecular systems and make them a good, promising candidate for field-effect transistors.

scholarly journals Design and Implementation of Ternary Logic Circuits for VLSI Applications

2020 ◽  
Vol 9 (4) ◽  
pp. 3117-3121
Keyword(s):  
Power Dissipation ◽  
Digital Circuits ◽  
Propagation Delay ◽  
Logic Circuits ◽  
Combinational Circuits ◽  
Ternary Logic ◽  
Binary Logic ◽  
Design And Implementation ◽  
Half Adder

This paper mainly concentrates on the design and implementation of ternary logic circuits. The ternary numeral system has its base as 3. Ternary logic will use three symbols, which are, 0,1 and 2. The ternary logic has significant merits over binary logic in designing digital circuits. In this paper, it is proposed to implement a half adder circuit using ternary 3 to 1 multiplexer. The main objective of the work is, to design and implement ternary logic circuits and to analyse the function of the ternary combinational circuits using mentor graphics tool in 90nm technology. This paper also compares the ternary half adder design using k-map method with the proposed ternary half adder using multiplexer in terms of power dissipation, propagation delay and transistor count

Three-leg molecular transistors as molecular logic circuits: Design and modeling

2018 ◽  
Vol 32 (22) ◽  
pp. 1850234
Author(s):  
Aliasghar Shokri ◽  
Saleh Safapour ◽  
Reza Sabbaghi-Nadooshan
Keyword(s):  
Molecular Electronics ◽  
Full Adder ◽  
Logic Circuits ◽  
Simulation Software ◽  
Molecular Logic ◽  
Half Adder ◽  
Molecular Transistors ◽  
Transistor Model ◽  
Silicon Based ◽  
Molecular Transistor

The field of molecular electronics is a branch of science, which can have a variety of semiconductor technologies that extend beyond the silicon-based technology for the future. This branch of science may solve the limitations on size, high power usage and low speed in semiconductor technology. Rapid improvements in molecular electronics require modeling in the design of molecular devices. In this regard, we examine a three-leg molecule as a molecular transistor model and an indicator of methyl molecule as a resistance, in which the linkage of these abilities is carried out using LTspice simulation software. In order to investigate the effect of gated molecular on transport properties of the device, we design the half-adder molecular circuit and full-adder molecular circuit with them. The feasibility of building a prototype molecular transistor is illustrated using three-leg molecules directly contacted to gold electrodes, which the transmitted current from the structure is calculated using the Landauer formula. The application of the predicted results can be a base for designing moletronics devices.

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