相关实验视频
Updated: Jan 28, 2026

08:08
Fabrication and Design of Wood-Based High-Performance Composites
Published on: November 9, 2019
14.0K
Janus用于高性能超声波传感器和成像应用的压电复合设计
Chenxue Hou1,2, Qibo Lin3, Zimeng Shang1
1Shaanxi Provincial Key Laboratory of Integrated Circuit and System Integration, Faculty of Integrated Circuit, Xidian University, Xi'an 710071, China.
ACS applied materials & interfaces
|January 27, 2026
概括
一个具有双面压电复合材料的新型Janus超声波传感器提供双向声波辐射和提高性能. 这项创新提高了先进的水下和光声成像应用的电声效率.
科学领域:
- 材料科学 材料科学 材料科学
- 声学工程 声学工程
- 生物医学成像技术 生物医学成像技术
背景情况:
- 传统的超声波传感器在双向声波辐射和阻抗匹配方面经常面临局限性.
- 不同质的压电复合材料提供了提高传感器性能的潜力.
- 优化电声能量转换对于先进的成像技术至关重要.
研究的目的:
- 提出和描述一台Janus超声波传感器,采用双面1-3压电复合材料.
- 为了研究传感器的双向声波辐射和阻抗匹配能力.
- 在光声成像中评估传感器的性能.
主要方法:
- 一个异质超声波传感器的设计灵感来自于Janus的概念.
- 使用双面1-3压电复合材料,具有"密集-单体-稀疏"分布.
- 有限元模拟用于分析振动模式和性能指标.
- 用于成像应用的Janus传感器的制造和测试.
主要成果:
- 詹纳斯传感器展示了双向声波辐射和优化阻抗匹配.
- 证实了优越的振动模式性能和增强的电声能量转换效率.
- 实现了高的机电合系数,宽带宽和改进的回声电压幅度 (∼3.35 V).
- 使用制造的传感器成功展示了高质量的光声学成像.
结论:
- 拟议的Janus传感器设计有效地提高了超声波传感器的性能.
- 不同质复合方法为高性能传感器提供了一种可行的方法.
- 詹努斯传感器显示出在水下超声波成像和光声学成像中的应用非常有前途.
相关概念视频
Design Example: Application of Archimedes' Principle
828
Archimedes' principle is fundamental in analyzing the buoyant force and stability of floating bodies. In this example, a wooden block with a rectangular section floats in seawater. Based on the block's dimensions, its specific gravity and the specific weight of seawater are used to find the volume of water displaced and the center of buoyancy.
The volume of seawater displaced by the block is determined by first calculating the block's weight. This is done by multiplying the...
The volume of seawater displaced by the block is determined by first calculating the block's weight. This is done by multiplying the...
828
Classifying Matter by Composition
90.1K
Matter: Pure Substances and Mixtures
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
90.1K
Group Design
10.4K
The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
10.4K
Factorial Design
13.8K
Factorial Analysis is an experimental design that applies Analysis of Variance (ANOVA) statistical procedures to examine a change in a dependent variable due to more than one independent variable, also known as factors. Changes in worker productivity can be reasoned, for example, to be influenced by salary and other conditions, such as skill level. One way to test this hypothesis is by categorizing salary into three levels (low, moderate, and high) and skills sets into two levels (entry level...
13.8K
Transducer Mechanism: Nuclear Receptors
2.5K
Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
2.5K
Composition of Blood
12.0K
The blood in our bodies comprises three major components: blood plasma, formed elements, and the extracellular matrix. Blood plasma is a yellowish fluid that constitutes 55% of the total blood volume. It is primarily made up of water and essential substances such as electrolytes and proteins. Blood plasma serves as a medium for transporting blood cells and also contains nutrients, enzymes, hormones, antibodies, and gases.
Formed elements constitute the remaining 45% of the blood volume. These...
Formed elements constitute the remaining 45% of the blood volume. These...
12.0K

