通过对声辐射信号的数据驱动分类来提高纳米雪崩的检测能力
Emil Bronstein1, Jonathan Zimmerman2, Eugen Rabkin2
1Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, 3200003 Haifa, Israel.
Physical review. E
|November 18, 2023
概括
这项研究引入了一种新的数据驱动方法来检测小规模的声辐射 (AE) 事件,这对于理解纳米级现象至关重要. 这种方法提高了AE信号的检测范围,使材料中较小的雪崩的研究成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
- 纳米技术纳米技术
背景情况:
- 声波发射 (AE) 对于研究称为雪崩的材料故障事件至关重要.
- 由于在实验噪声水平附近的信号幅度较低,检测小规模的AE事件具有挑战性.
- 传统方法忽略了小规模事件,阻碍了对材料中纳米尺度现象的研究.
研究的目的:
- 开发一种数据驱动的方法来检测小规模的声辐射 (AE) 事件.
- 在AE事件检测中克服传统标量特征分析的局限性.
- 为了研究像纳米颗粒这样的材料中的纳米级雪崩.
主要方法:
- 经过修改的实验条件,AE信号的检测值更低.
- 利用动态模式分解 (DMD) 来分析整个AE事件波形.
- 将开发的方法应用于压缩纳米颗粒的AE数据.
主要成果:
- 成功检测出以前低于常规噪声值的小规模AE事件.
- 在AE事件的检测范围中显著增强.
- 能够研究以前无法检测到的纳米级雪崩.
结论:
- 开发的数据驱动方法有效地检测小规模的AE事件.
- 这一进步允许对材料中的纳米尺度现象进行更深入的研究.
- 该方法对研究各种材料和物理系统中的雪崩具有前景.
相关概念视频
Atomic Force Microscopy
3.4K
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
3.4K
Atomic Emission Spectroscopy: Lab
171
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
171
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
231
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
231


