We present a new optomechanical probe for mechanical testing of soft matter. The probe consists of a micromachined cantilever equipped with an indenting sphere, and an array of 16 single-mode optical fibers, which are connected to an Optical Coherence Tomography (OCT) system that allows sub-surface analysis of the sample during the indentation stroke. To test our device and its capability, we performed indentation on a PDMS-based phantom. Our findings demonstrate that Common Path (CP)-OCT via lensed optical fibers can be successfully combined with a microindentation sensor to visualize the phantom's deformation profile at different indentation depths and locations in real-time. This article is protected by copyright. All rights reserved.

中文翻译：

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基于光纤阵列的光学相干断层扫描材料变形压痕探针

我们提出了一种用于软物质机械测试的新型光机探头。探针由配备压痕球的微机械悬臂和 16 根单模光纤阵列组成，这些光纤连接到光学相干断层扫描 (OCT) 系统，允许在压痕行程期间对样品进行表面分析。为了测试我们的设备及其功能，我们在基于 PDMS 的模型上进行了压痕。我们的研究结果表明，通过透镜光纤的公共路径 (CP)-OCT 可以成功地与微压痕传感器结合，以实时可视化不同压痕深度和位置的体模变形轮廓。本文受版权保护。版权所有。