An enhanced ENCIPHER to encrypt large text & image using basic arithmetic and logic operation with substitution-transposition

2021 ◽  
pp. 375-380
Author(s):  
D. Prasad ◽  
S. Kumar ◽  
V. Bharti
Keyword(s):  
Logic Operation

scholarly journals Hierarchical mechanical metamaterials built with scalable tristable elements for ternary logic operation and amplitude modulation

2021 ◽  
Vol 7 (9) ◽  
pp. eabf1966
Author(s):  
Hang Zhang ◽  
Jun Wu ◽  
Daining Fang ◽  
Yihui Zhang
Keyword(s):  
Structural Diversity ◽  
Cell Number ◽  
Structural Elements ◽  
Ternary Logic ◽  
Stable States ◽  
One Dimensional ◽  
Logic Operation ◽  
Artificial Materials ◽  
Mechanical Metamaterials ◽  
Unit Cells

Multistable mechanical metamaterials are artificial materials whose microarchitectures offer more than two different stable configurations. Existing multistable mechanical metamaterials mainly rely on origami/kirigami-inspired designs, snap-through instability, and microstructured soft mechanisms, with mostly bistable fundamental unit cells. Scalable, tristable structural elements that can be built up to form mechanical metamaterials with an extremely large number of programmable stable configurations remains illusive. Here, we harness the elastic tensile/compressive asymmetry of kirigami microstructures to design a class of scalable X-shaped tristable structures. Using these structure as building block elements, hierarchical mechanical metamaterials with one-dimensional (1D) cylindrical geometries, 2D square lattices, and 3D cubic/octahedral lattices are designed and demonstrated, with capabilities of torsional multistability or independent controlled multidirectional multistability. The number of stable states increases exponentially with the cell number of mechanical metamaterials. The versatile multistability and structural diversity allow demonstrative applications in mechanical ternary logic operators and amplitude modulators with unusual functionalities.

Effect of time-delayed feedback in a bistable system inferred by logic operation

2021 ◽  
Vol 148 ◽  
pp. 111043
Author(s):  
Rong Gui ◽  
Jiaxin Li ◽  
Yuangen Yao ◽  
Guanghui Cheng
Keyword(s):  
Delayed Feedback ◽  
Bistable System ◽  
Logic Operation ◽  
Time Delayed Feedback

Realizing all-optical full-adder logic operation with photorefractive crystal phase conjugation

2007 ◽  
Author(s):  
Xiuying Fan ◽  
Guohui Lv ◽  
Zuohong Jiang ◽  
Huiying Wang ◽  
Youlong Yu
Keyword(s):  
Phase Conjugation ◽  
Full Adder ◽  
Photorefractive Crystal ◽  
Crystal Phase ◽  
Logic Operation ◽  
All Optical

Robust, Synchronous Optical Buffer, and Logic Operation in Dual-Pump Kerr Micro-Resonator

2018 ◽  
Vol 36 (24) ◽  
pp. 5807-5814 ◽  
Author(s):  
Arkadev Roy ◽  
Raktim Haldar ◽  
Shailendra Kumar Varshney
Keyword(s):  
Optical Buffer ◽  
Logic Operation ◽  
Micro Resonator

scholarly journals Discrimination of Skyrmion Chirality Via Spin-Orbit and -Transfer Torques for Logic Operation

2021 ◽  
Author(s):  
Yoshinobu Nakatani ◽  
Keisuke Yamada ◽  
Atsufumi Hirohata
Keyword(s):  
Thin Film ◽  
Building Block ◽  
Logic Circuits ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Spin Orbit ◽  
Electrical Detection ◽  
Magnetic Thin Film ◽  
Logic Operation ◽  
Fundamental Building Block

Abstract Recently many works on magnetic memories and logic circuits, which use a magnetic skyrmion have been reported. Previously we micromagnetically simulated a method to switch a chirality of a magnetic skyrmion formed in a magnetic thin film by introducing a pulsed heat spot. In this paper, we propose a method to discriminate the chirality of a skyrmion in a branched nanowire by using spin-orbit torque (SOT) and spin-transfer torque (STT), and confirm the validity of the method by using simulation. The simulated results show that the motion changes depending on the chirality when additional SOT is applied on a skyrmion moving in a branch by STT. This method can be used as a fundamental building block for electrical detection in memory and logic devices using the chirality of skyrmions as a data bit in addition to the presence (and polarity) of the skyrmions as conventionally used, which can be lead to multiple-valued operation.

A Taco Complex Derived from a Bis-Crown Ether Capable of Executing Molecular Logic Operation through Reversible Complexation

2012 ◽  
Vol 77 (16) ◽  
pp. 6789-6800 ◽  
Author(s):  
Amal Kumar Mandal ◽  
Priyadip Das ◽  
Prasenjit Mahato ◽  
Suhash Acharya ◽  
Amitava Das
Keyword(s):  
Crown Ether ◽  
Logic Operation ◽  
Molecular Logic
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