Highly transparent elastic optical microcavities for interferometric mapping of cell mechanics

F. Busse, J. H. Booth, N. M. Kronenberg, Y. Sun, A. T. Meek, A. Mischok, S. R. Pulver, M. C. Gather*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Elastic resonator interference stress microscopy (ERISM) enables label-free, non-invasive measurements of cellular forces by detecting the cell-induced deformation of an optical microcavity using optical interference. Here, we present an improved microcavity design that utilizes a high-refractive-index elastomer, eliminating the need for the top metal layer required in traditional ERISM microcavities. This simplifies the fabrication process, offers improved control over mechanical properties, and enhances the resolution of ERISM measurements. The design is compatible with various bio-coatings, maintains long-term cell viability, and significantly improves optical transmission. This enables integrated and confocal fluorescence imaging with improved contrast over traditional ERISM microcavities.
Original languageEnglish
Pages (from-to)4617-4632
Number of pages16
JournalBiomedical Optics Express
Volume16
Issue number11
Early online date22 Oct 2025
DOIs
Publication statusPublished - 1 Nov 2025

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