Simple high-resolution 3D microscopy by a dielectric microsphere: a proof of concept

Vahid Abbasian, Arash Darafsheh, Ali Reza Moradi

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We present a simple high-resolution approach for 3D and quantitative phase imaging (QPI). Our method makes the most of a glass microsphere (MS) for microscopy and a glass plate for lateral shearing self-referencing interferometry. The single MS serves all the functions of a microscope objective (MO) in digital holographic microscopy (DHM) while offering the advantages of compactness, lightness, and affordability. A proof-of-concept experiment is performed on a standard diffraction grating, and various effective parameters on the imaging performance are investigated. The results are validated by atomic force microscopy and Mirau-DHM, and 3D morphometric information of the sample under inspection is obtained. The technique is then applied for 3D quantitative measurement and visualization of a human red blood cell, proving the principle of our easy-to-implement and vibration-immune arrangement for high-contrast label-free QPI of biological samples, and its utility in cell morphology, identification, and classification.

Original languageEnglish
Pages (from-to)6216-6219
Number of pages4
JournalOptics Letters
Issue number23
StatePublished - Dec 1 2023


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