scispace - formally typeset
Topic

XNOR gate

About: XNOR gate is a(n) research topic. Over the lifetime, 1312 publication(s) have been published within this topic receiving 20210 citation(s).

...read more

Papers
  More

18 Mar 2002-Advanced Materials
Abstract: The tremendous pace in the development of information technology is rapidly approaching a limit. Alternative materials and operating princlples for the elaboration and communication of data in electronic circults and optical networks must be identified. Organic molecules are promising candidates for the realization of future digital processors. Their attractive features are the miniaturized dimensions and the high degree of control on molecular design possible in chemical synthesis. Indeed, nanostructures with engineered properties and specific functions can be assembled relying on the power of organic synthesis. In particular, certain molecales can be designed to switch from one state to another, when addressed with chemical, electrical, or optical stimulations, and to produce a detectable signal in response to these transformations. Binary data can be enceded on the input stimulations and output signals employing logic conventions and assumptions similar to those ruting digital electronics. Thus, binary inputs can be transduced into binary outputs relying on molecular switches. Following these design principles, the three basic logic operations (AND, NOT, and OR) and more complex logic functions (EOR, INH, NOR, XNOR, and XOR) have been reproduced already at the molecular level. Presently, these simple "molecular processors" are far from any practical application. However, these encouraging results demonstrate already that chemical systems can process binary data with designed logic protocols. Further fundamental studies on the various facets of this emerging area will reveal if and how molecular switches can become the basic components of furture logic devices. After all, chemical computers are available atready. We all carry one in our head!

...read more

Topics: Digital electronics (58%), State (computer science) (56%), XNOR gate (52%) ...read more

578 Citations



Open accessJournal ArticleDOI: 10.1063/1.2834714
Abstract: We demonstrate the functionality of spin-wave logic XNOR and NAND gates based on a Mach-Zehnder type interferometer which has arms implemented as sections of ferrite film spin-wave waveguides. Logical input signals are applied to the gates by varying either the phase or the amplitude of the spin waves in the interferometer arms. This phase or amplitude variation is produced by Oersted fields of dc current pulses through conductors placed on the surface of the magnetic films.

...read more

  • FIG. 1. XNOR gate. a Inserted phase vs current for the current controlled spin wave phase shifters CPSs used to construct the XNOR gate prototype. It is clearly visible that the phase shifts in both arms channels are identical. The inset shows the phase shifter geometry. b Spin-wave XNOR gate geometry. The currents I1 and I2 represent the logical inputs 0 A corresponds to 0, I corresponds to 1 , the spin-wave interference signal represents the logical output. Inset: truth table for a XNOR gate. c Gate output signals for input signals shown in the diagrams.
    FIG. 1. XNOR gate. a Inserted phase vs current for the current controlled spin wave phase shifters CPSs used to construct the XNOR gate prototype. It is clearly visible that the phase shifts in both arms channels are identical. The inset shows the phase shifter geometry. b Spin-wave XNOR gate geometry. The currents I1 and I2 represent the logical inputs 0 A corresponds to 0, I corresponds to 1 , the spin-wave interference signal represents the logical output. Inset: truth table for a XNOR gate. c Gate output signals for input signals shown in the diagrams.
  • FIG. 2. NAND gate. a Demonstration of a spin-wave switch. Left part: output signal without applied current. Right part: output signal with applied current. Suppression of the output pulse is clearly visible. b Geometry of a spin-wave NAND gate. The currents I1 and I2 represent the logical inputs 0 A corresponds to 0, IS corresponds to 1 ; the spin-wave interference signal represents the logical output. Inset: truth table for a NAND gate. c Gate output signals for input signals as shown in the diagrams.
    FIG. 2. NAND gate. a Demonstration of a spin-wave switch. Left part: output signal without applied current. Right part: output signal with applied current. Suppression of the output pulse is clearly visible. b Geometry of a spin-wave NAND gate. The currents I1 and I2 represent the logical inputs 0 A corresponds to 0, IS corresponds to 1 ; the spin-wave interference signal represents the logical output. Inset: truth table for a NAND gate. c Gate output signals for input signals as shown in the diagrams.
Topics: NAND logic (71%), XNOR gate (68%), Logic gate (55%) ...read more

457 Citations


Journal ArticleDOI: 10.1021/JA016756V
Abstract: We report herein a set of deoxyribozyme-based logic gates capable of generating any Boolean function. We construct basic NOT and AND gates, followed by the more complex XOR gate. These gates were constructed through a modular design that combines molecular beacon stem-loops with hammerhead-type deoxyribozymes. Importantly, as the gates have oligonucleotides as both inputs and output, they open the possibility of communication between various computation elements in solution. The operation of these gates is conveniently connected to a fluorescent readout.

...read more

Topics: Three-input universal logic gate (71%), AND-OR-Invert (65%), NOR logic (64%) ...read more

439 Citations


Journal ArticleDOI: 10.1126/SCIENCE.1232758
Jerome Bonnet1, Peter Yin1, Monica E. Ortiz1, Pakpoom Subsoontorn1  +1 moreInstitutions (1)
03 May 2013-Science
Abstract: Organisms must process information encoded via developmental and environmental signals to survive and reproduce. Researchers have also engineered synthetic genetic logic to realize simpler, independent control of biological processes. We developed a three-terminal device architecture, termed the transcriptor, that uses bacteriophage serine integrases to control the flow of RNA polymerase along DNA. Integrase-mediated inversion or deletion of DNA encoding transcription terminators or a promoter modulates transcription rates. We realized permanent amplifying AND, NAND, OR, XOR, NOR, and XNOR gates actuated across common control signal ranges and sequential logic supporting autonomous cell-cell communication of DNA encoding distinct logic-gate states. The single-layer digital logic architecture developed here enables engineering of amplifying logic gates to control transcription rates within and across diverse organisms.

...read more

Topics: Transcriptor (61%), Sequential logic (57%), Logic gate (54%) ...read more

430 Citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202188
202082
201989
201871
201790
201674

Top Attributes

Show by:

Topic's top 5 most impactful authors

Magdy Bayoumi

9 papers, 759 citations

Amer Kotb

8 papers, 89 citations

Shaahin Angizi

6 papers, 80 citations

Mohamed Elgamel

4 papers, 154 citations

Kyriakos E. Zoiros

4 papers, 81 citations

Network Information
Related Topics (5)
Logic gate

35.7K papers, 488.3K citations

87% related
Chip

44.5K papers, 352.3K citations

85% related
Integrated circuit

82.7K papers, 1M citations

85% related
CMOS

81.3K papers, 1.1M citations

85% related
Electronic circuit

114.2K papers, 971.5K citations

84% related