Fluorescence Imaging

Estimation of the Deformation Gradient Tensor by Particle Tracking Near a Free Boundary with Quantified Error

Background Obtaining accurate displacement measurements for large material deformation and/or rotation presents a distinct challenge to digital image correlation (DIC) due to cumulative and decorrelation errors, particularly near material …

Crack tip kinematics reveal the process zone structure in brittle hydrogel fracture

When brittle hydrogels fail, several mechanisms conspire to alter the state of stress near the tip of a crack, and it is challenging to identify which mechanism is dominant. In the fracture of brittle solids, a sufficient far-field stress results in …

Rapid and Repeatable Fluorescent Speckle Pattern Fabrication Using a Handheld Inkjet Printer

Background: compared with regular speckle patterns formed by reflecting the illumination light, fluorescent speckle patterns generated by the emitted light of fluorescent particles offer distinct advantages of specular reflection elimination, high …

Heatwave distortion correction using an improved reference sample compensation method and multispectral digital image correlation

Heatwave distortions, caused by unevenly distributed temperature and refractive index in the optical path, unavoidably occur in high-temperature digital image correlation (DIC) measurement. To eliminate these distortions, a multispectral DIC-aided …

Fluorescent 2D Digital Image Correlation With Built‐in Coaxial Illumination for Deformation Measurement in Space‐constrained Scenarios

An advanced two-dimensional digital image correlation (2D-DIC) using active imaging and telecentric imaging has been proposed to overcome the problems of out-of-plane motion and ambient light variation. Here, the technique is further improved by …

New exploration and application of fluorescent digital image correlation

New exploration and application of fluorescent digital image correlation

Fluorescent digital image correlation applied for macroscale deformation measurement

Fluorescent digital image correlation (DIC) has been implemented on monocular and binocular fluorescence microscopes for shape and deformation measurements at the microscale and even the nanoscale by tracking fluorescent particles. This technique, …