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Atomic Force Microscopy

Atomic Force Microscopy

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...

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用于弹性成像的抗声波衍射自适应型材技术 (ADAPT).

Yuyang Gu^1,2, Viksit Kumar^1,2, E G Sunethra K Dayavansha^1,2

¹Department of Radiology, Massachusetts General Hospital, Center for Ultrasound Research and Translation, Boston, MA 02114, USA.

Science advances

|November 1, 2023

概括

耐声波衍射的自适应型材技术 (ADAPT) 创建可定制的,传播不变的声波束. 这一突破使得用于医学,生物学和材料科学中的各种应用的声学配置文件能够得到精确的控制.

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科学领域:

声学声学在声学方面
生物医学工程生物医学工程
材料科学材料科学材料科学

背景情况:

高自由度的声波束塑造对于超声波成像和操纵等应用至关重要.
目前的方法在传播过程中缺乏对声压概况的完全控制.

研究的目的:

展示一种抗声波衍射的自适应型图形技术 (ADAPT),用于生成任意的,不变传播的声波束图形.
为使用线性阵列超声波传感器生成灵活的声波束提供一个一般框架.

主要方法:

利用波数调制和光束复杂化.
开发用于用线性超声波传感器阵列生成声波束的一般框架.
实施减弱补偿,以维护损耗材料中的光束配置.

主要成果:

成功生成了具有所需配置的传播不变声波束.
证明了在损耗材料中保持束形状的能力.
展示了 ADAPT 对剪波弹性成像在评估组织机械性质方面的好处.

结论:

ADAPT克服了声波束成形方面的局限性,提供了前所未有的控制.
该技术具有多功能性,适用于医学,生物学和材料科学.
ADAPT增强了诸如剪波弹性成像等用于组织性质评估的模式.