Omrani Ehsan Mehdizadeh, Nazari Fakhroddin
Faculty of Engineering Modern Technologies, Amol University of Special Modern Technologies, Amol, 4616849767, Iran.
Sci Rep. 2025 Apr 9;15(1):12169. doi: 10.1038/s41598-025-97136-7.
This study present novel configurations for magnetically tunable AND/XOR logic gates, employing ring resonators, cross-shaped waveguides, and Terfenol-D cylinders integrated into a solid-solid phononic crystal. The proposed design provides the varying magnetic field intensities of Terfenol-D within the MHz frequency spectrum. These gates boast an ultra-compact design with a footprint measuring just 249× [Formula: see text] m² and 129× [Formula: see text] m², featuring two input waveguides and one output waveguide, each outfitted with two ring resonators. Each ring resonator integrates three utilized Terfenol-D cylinders that enable modulation of Young's modulus. The symmetrical configuration of the structures facilitates the creation of unique resonant frequencies for the AND/XOR gates, adapting identically to variations in magnetic field intensities. These tunable AND/XOR gates are designed to be influenced by external magnetic fields, utilizing the variations in Young's modulus that occur in magnetostrictive materials under various magnetic field intensities. The tunability and operational efficiency of these gates are greatly play a crucial role for enhancing the resonance frequency numbers of the ring resonators and the dynamic modulation of the Terfenol-D properties. Tunability experiments were conducted at several Young's modulus values of Terfenol-Ds, corresponding to three varying magnetic field intensities, resulting in resonance frequencies of 1.5030 MHz, 1.5032 MHz, and 1.5033 MHz for the AND gate and 1.5040 MHz, 1.5044 MHz, 1.5047 MHz for the XOR gate. The performance of the gates was appraised using the finite element method, which yielded an average contrast ratio of 11.59 dB and 12.15 dB for AND logic gate and XOR logic gate, respectively. The suggested AND/XOR gates present a simple yet efficient solution for acoustic communication systems, networks, and digital acoustic computing circuits.
本研究提出了用于磁可调与门/异或逻辑门的新型结构，采用了集成到固 - 固声子晶体中的环形谐振器、十字形波导和特氟龙 - D 圆柱体。所提出的设计在兆赫兹频谱内提供了特氟龙 - D 的变化磁场强度。这些逻辑门拥有超紧凑设计，占地面积仅为 249×[公式：见原文]平方米和 129×[公式：见原文]平方米，具有两个输入波导和一个输出波导，每个波导都配备有两个环形谐振器。每个环形谐振器集成了三个用于调制杨氏模量的特氟龙 - D 圆柱体。结构的对称配置有助于为与门/异或门创建独特的谐振频率，能同样地适应磁场强度的变化。这些可调与门/异或门设计为由外部磁场影响，利用磁致伸缩材料在各种磁场强度下杨氏模量的变化。这些逻辑门的可调性和运行效率对于提高环形谐振器的谐振频率数量以及特氟龙 - D 属性的动态调制起着至关重要的作用。在特氟龙 - D 的几个杨氏模量值下进行了可调性实验，对应于三种不同的磁场强度，与门的谐振频率为 1.5030 兆赫兹、1.5032 兆赫兹和 1.5033 兆赫兹，异或门的谐振频率为 1.5040 兆赫兹、1.5044 兆赫兹、1.5047 兆赫兹。使用有限元方法对逻辑门的性能进行了评估，与门逻辑门和异或逻辑门的平均对比度分别为 11.59 分贝和 12.15 分贝。所建议的与门/异或门为声学通信系统、网络和数字声学计算电路提供了一种简单而有效的解决方案。
