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.

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.

HAMILTONIAN LOGIC GATES: COMPUTING INSIDE A MOLECULE

2005 ◽  
Vol 04 (01) ◽  
pp. 107-118 ◽  
Author(s):  
C. JOACHIM ◽  
I. DUCHEMIN ◽  
J. FIURÁŠEK ◽  
N. J. CERF
Keyword(s):  
Molecular Electronics ◽  
Single Molecule ◽  
Logic Gate ◽  
Level Structure ◽  
Logic Gates ◽  
Electrical Circuit ◽  
Molecular Logic ◽  
Molecular Logic Gates ◽  
Half Adder ◽  
Nonstationary State

Using an intramolecular single-electron transfer process, we show how computing inside a quantum system can be performed using the time evolution driven by the preparation of the system in a nonstationary state. The molecule Hamiltonian is separated in three parts: the input, calculation, and output parts. Two optimization procedures are described in order to design an efficient monoelectronics level structure for molecular logic gates. An XOR gate and a half-adder using six electronic quantum levels are presented in a prospect to integrate a full logic gate inside a single molecule without forcing the molecule to have the shape of an electrical circuit. We foresee the merger of molecular electronics with quantum computation at the nanoscale.

scholarly journals A New Full Adder Cell for Molecular Electronics

2011 ◽  
Vol 2 (4) ◽  
pp. 1-13 ◽  
Author(s):  
Mehdi Ghasemi ◽  
Mohammad Hossein Moaiyeri ◽  
Keivan Navi
Keyword(s):  
Molecular Electronics ◽  
Full Adder

Full Adder Operation Based on Si Nanodot Array Device with Multiple Inputs and Outputs

2011 ◽  
pp. 131-139
Author(s):  
Takuya Kaizawa ◽  
Mingyu Jo ◽  
Masashi Arita ◽  
Akira Fujiwara ◽  
Kenji Yamazaki ◽  
...  
Keyword(s):  
Full Adder ◽  
Silicon On Insulator ◽  
Single Electron ◽  
Nanodot Array ◽  
Half Adder ◽  
Electron Effects ◽  
Inputs And Outputs

A highly functional Si nanodot array device that operates by means of single-electron effects was experimentally demonstrated. The device features many input gates, and many outputs can be attached. A nanodot array device with three input gates and two output terminals was fabricated on a silicon-on-insulator wafer using conventional Si MOS processes. Its feasibility was demonstrated by its operation as both a half adder and a full adder when the operation voltage was carefully selected.

Quaternary Quantum/Reversible Half-Adder, Full-Adder, Parallel Adder and Parallel Adder/Subtractor Circuits

2019 ◽  
Vol 58 (7) ◽  
pp. 2184-2199 ◽  
Author(s):  
Asma Taheri Monfared ◽  
Majid Haghparast ◽  
Kamalika Datta
Keyword(s):  
Full Adder ◽  
Half Adder

The exploration of novel fluorescent copper–cysteamine nanosheets for sequential detection of Fe3+ and dopamine and fabrication of molecular logic circuits

2020 ◽  
Vol 8 (37) ◽  
pp. 12935-12942 ◽  
Author(s):  
Zhenzhen Huang ◽  
Wenzhi Song ◽  
Yue Li ◽  
Lingyun Wang ◽  
Nil Kanatha Pandey ◽  
...  
Keyword(s):  
Logic Circuits ◽  
Good Stability ◽  
Sequential Detection ◽  
Red Fluorescence ◽  
Molecular Logic ◽  
Dopamine Detection ◽  
New Type

Herein, newly emerged copper–cysteamine (Cu–Cy) nanosheets with red fluorescence and a good stability were explored as a new type of probe for Fe3+ and dopamine detection.

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.

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