Chemically-driven “molecular logic circuit” based on osmium chromophore with a resettable multiple readout

RSC Advances ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 5217-5220 ◽  
Author(s):  
Anup Kumar ◽  
Megha Chhatwal ◽  
Rinkoo D. Gupta ◽  
Satish Kumar Awasthi
Keyword(s):  
Logic Circuits ◽  
Logic Circuit ◽  
Molecular Logic ◽  
Subsequent Integration

Resettable molecular processing of inputs (Cu2+/H2O and F−/H+) to yield discriminating outputs and subsequent integration of logic circuits.

Research of Molecule Logic Circuit Based on DNA Strand Displacement Reaction

2016 ◽  
Vol 13 (10) ◽  
pp. 7684-7691 ◽  
Author(s):  
Zicheng Wang ◽  
Zijie Cai ◽  
Zhonghua Sun ◽  
Jian Ai ◽  
Yanfeng Wang ◽  
...  
Keyword(s):  
Logic Circuits ◽  
Logic Circuit ◽  
The Other ◽  
Strand Displacement ◽  
Molecular Logic ◽  
Dna Strand Displacement ◽  
Dna Strand ◽  
Gold Nanoprobe ◽  
Decoder Circuit ◽  
Strand Displacement Reaction

Because of its outstanding advantages, DNA strand displacement (DSD) reaction has been widely used for signals processing and molecular logic circuit constructing. Two digital logic circuits are constructed in this paper. One is the encoder circuit with four inputs and two outputs, and the other is the decoder circuit with two inputs and four outputs. Of particular interest to us is the multicolor fluorescent gold nanoprobe detection part, where a gold nanoparticle is modified with multicolor fluorophores which exploits the ultrahigh quenching ability of gold nanoparticles (AuNPs). Finally, the circuits can be programmed and simulated with the software Visual DSD. The simulated results based on DSD show that the molecular circuits constructed in this paper is reliable and effective, which has wide prospects in logical circuits and nano-electronics study.

scholarly journals Constructing Controllable Logic Circuits Based on DNAzyme Activity

Molecules ◽  
2019 ◽  
Vol 24 (22) ◽  
pp. 4134 ◽  
Author(s):  
Fengjie Yang ◽  
Yuan Liu ◽  
Bin Wang ◽  
Changjun Zhou ◽  
Qiang Zhang
Keyword(s):  
Simple Structure ◽  
Logic Gates ◽  
Dna Structure ◽  
Logic Circuits ◽  
Logic Circuit ◽  
Cascade Process ◽  
Activity Regulation ◽  
Basic Logic ◽  
Molecular Logic ◽  
Multi Level

Recently, DNA molecules have been widely used to construct advanced logic devices due to their unique properties, such as a simple structure and predictable behavior. In fact, there are still many challenges in the process of building logic circuits. Among them, the scalability of the logic circuit and the elimination of the crosstalk of the cascade circuit have become the focus of research. Inspired by biological allosteric regulation, we developed a controllable molecular logic circuit strategy based on the activity of DNAzyme. The E6 DNAzyme sequence was temporarily blocked by hairpin DNA and activated under appropriate input trigger conditions. Using a substrate with ribonucleobase (rA) modification as the detection strand, a series of binary basic logic gates (YES, AND, and INHIBIT) were implemented on the computational component platform. At the same time, we demonstrate a parallel demultiplexer and two multi-level cascade circuits (YES-YES and YES-Three input AND (YES-TAND)). In addition, the leakage of the cascade process was reduced by exploring factors such as concentration and DNA structure. The proposed DNAzyme activity regulation strategy provides great potential for the expansion of logic circuits in the future.

scholarly journals Three-dimensional lattice logic circuits, Part I: Fundamentals

2005 ◽  
Vol 18 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Anas Al-Rabadi
Keyword(s):  
Circuit Design ◽  
Fault Localization ◽  
Three Dimensional ◽  
Logic Circuits ◽  
Logic Circuit ◽  
Device Performance ◽  
Important Class ◽  
Future Directions ◽  
Dimensional Lattice ◽  
Current Technology

Fundamentals of regular three-dimensional (3D) lattice circuits are introduced. Lattice circuits represent an important class of regular circuits that allow for local interconnections, predictable timing, fault localization, and self-repair. In addition, three-dimensional lattice circuits can be potentially well suited for future 3D technologies, such as nanotechnologies, where the intrinsic physical delay of the irregular and lengthy interconnections limits the device performance. Although the current technology does not offer a menu for the immediate physical implementation of the proposed three-dimensional circuits, this paper deals with three-dimensional logic circuit design from a fundamental and foundational level for a rather new possible future directions in designing digital logic circuits.

scholarly journals On self-correcting logic circuits of unreliable gates

2021 ◽  
pp. 1-18
Author(s):  
Kirill Andreevich Popkov
Keyword(s):  
Positive Integer ◽  
Boolean Function ◽  
Boolean Functions ◽  
Arbitrary Number ◽  
Logic Circuits ◽  
Logic Circuit ◽  
Complete Basis

The following statements are proved: 1) for any integer m ≥ 3 there is a basis consisting of Boolean functions of no more than m variables, in which any Boolean function can be implemented by a logic circuit of unreliable gates that self-corrects relative to certain faults in an arbitrary number of gates; 2) for any positive integer k there are bases consisting of Boolean functions of no more than two variables, in each of which any Boolean function can be implemented by a logic circuit of unreliable gates that self-correct relative to certain faults in no more than k gates; 3) there is a functionally complete basis consisting of Boolean functions of no more than two variables, in which almost no Boolean function can be implemented by a logic circuit of unreliable gates that self-correct relative to at least some faults in no more than one gate.

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.

A new PET and FRET-based molecular logic circuit mimicking the three-state logic gate

2017 ◽  
Vol 140 ◽  
pp. 460-468 ◽  
Author(s):  
Changlin Zhao ◽  
Zhiqiang Wang ◽  
Xueqing Gong ◽  
Qisong Zhang ◽  
Chengyun Wang ◽  
...  
Keyword(s):  
Logic Gate ◽  
Logic Circuit ◽  
Molecular Logic

Target-triggered cascade recycling amplification for label-free detection of microRNA and molecular logic operations

2016 ◽  
Vol 52 (2) ◽  
pp. 402-405 ◽  
Author(s):  
Sai Bi ◽  
Jiayan Ye ◽  
Ying Dong ◽  
Haoting Li ◽  
Wei Cao
Keyword(s):  
Logic Gates ◽  
Logic Circuits ◽  
Label Free ◽  
Chemiluminescence Detection ◽  
Molecular Logic ◽  
Label Free Detection ◽  
Molecular Scale ◽  
Ultrahigh Sensitivity ◽  
Recycling Amplification ◽  
Logic Operations

A cascade recycling amplification (CRA) that implements cascade logic circuits with feedback amplification function is developed for label-free chemiluminescence detection of microRNA-122 with an ultrahigh sensitivity of 0.82 fM and excellent specificity, which is applied to construct a series of molecular-scale two-input logic gates by using microRNAs as inputs and CRA products as outputs.

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