2019年4月10日 · This review describes the evolution of PFM from an imaging technique to a set of advanced methods, which have played a critical role in launching new areas of ferroic research, such as ...

矢量PFM是将数据与样本的0°和90°旋转相结合，获得响应的三维矢量信息。 对于纯面外响应，有效压电系数d33可以从测量的振荡幅值 (a)和施加在样品上的电压 (VAC)计算出来:

Piezoresponse force microscopy (PFM) is a variant of atomic force microscopy (AFM) that allows imaging and manipulation of piezoelectric/ferroelectric materials domains.

PFM Portable FloatMap Image Format The Portable FloatMap format was designed as a floating-point image format in the spirit of Jef Poskanzer 's Portable Pixmap file format from the PBMPlus toolkit, most currently available through the Source Forge NetPBM distribution.

PFM amplitude and phase images with height information. In PFM imaging, the phase contrast between AC excitation and the sample’s piezoelectric response directly relates to the polarization orientation of the domain below the tip. The amplitude of the piezoelectric response on the other hand resolves the position of domain walls.

One of AFM offsprings - Piezoresponse Force Microscopy (PFM) [1-4] is based on sensing of a tiny displacement of the samples caused by electric field excitation. A microfabricated probe with the tip dimensions in the nanometer scale is employed for this detection that can be performed with unique spatial resolution.

2021年9月16日 · pfm图像是 字节流，由两部分组成：header和raster. 我认为pfm只是一种数据存储的格式，图像也可以使用pfm，但pfm存储的并非图像，可以通过图像可视化。 三行ASCII字符，每行结尾有一个空格，通常是一个换行符，但是不是必须的。 pamtopfm在其生成的pfm文件中使用换行符。 ”PF“或者是“Pf”，前者表示是彩色，后者表示是灰度图。 维度行包含两个正十进制整数，用空格分隔。 第一个是图像的宽度；第二个是高度。 两者都以像素为单位。 该行由非零十 …

2024年2月27日 · This document describes the PFM graphic image file format as understood by the Netpbm converters pamtopfm and pfmtopam. There are multiple similar formats known as PFM in the world, none of them authoritatively documented.

Piezoelectric force microscopy (PFM) image based on the in situ epitaxial YMO film in a 3.0×3.0 μm2 area. (a) Topography (b) amplitude contrast, (c) phase contrast and local switching...

Piezoresponse force microscopy (PFM) is a powerful technique to characterize fer-roelectric thin films by measuring the dynamic electromechanical response. The...