QPt provides a digital solution to phase contrast electron microscopy. QPt derives a phase image only from three ordinary bright-field images based on the Transport of Intensity Equation (TIE), and estimate a just-focus (in-focus) image by eliminating artifacts in defocused images. QPt employs Quantitative Phase Imaging (QPI) technology based on Fast Fourier Transform (FFT).

QPt will work for medium resolution electron microscopy, such as observation of microscopic magnetic field or unstained biological sample, as well as atomic resolution electron microscopy (see HREM module below). The combination of the observed amplitude and the estimated phase completely defines the transmitted complex wave field. Therefore, we can propagate the complex wave to any desired plane, in particular the sample exit plane.

HREM module (the license for HREM module is required) Read More



References and Technical Notes (* Basic Readings)

Examples (Sample Data)


You have to purchase a license (hardware key) to run this program.
Please send your price enquiry to support@hremresearch.com.

Required plug-ins.

User Key Driver

Previous versions


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