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Related Experiment Video

Updated: Apr 26, 2026

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

Microfabrication of Implantable Optics Integrated in a Microstructured Imaging Window for Advanced In Vivo Imaging

Published on: April 11, 2025

Microfluidic-integrated laser-controlled microactuators with on-chip microscopy imaging functionality.

Jae Hee Jung¹, Chao Han, Seung Ah Lee

¹Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA.

|August 8, 2014

Summary

This summary is machine-generated.

A novel microfluidic system uses laser-controlled microactuators for precise fluid control and on-chip microscopy. This integrated platform enables real-time monitoring of cell-drug interactions and cell growth within an incubator.

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Area of Science:

Biomedical Engineering
Microfluidics
Optics

Background:

Microfluidic systems require precise control of fluid flow for various applications.
On-chip microscopy offers high-resolution imaging capabilities for biological samples.
Integrating fluid control and imaging on a single chip presents a significant challenge.

Purpose of the Study:

To develop a novel microfluidic system with laser-actuated microactuators for precise fluid manipulation.
To integrate this system with an ePetri on-chip microscopy platform for real-time imaging.
To demonstrate the system's utility in analyzing cell-drug interactions and monitoring cell growth.

Main Methods:

Fabrication of a microfluidic chip on a complementary metal-oxide-semiconductor (CMOS)-imaging sensor.
Development of thermally actuated paraffin-based microactuators controlled by programmed laser optics.
Utilizing a sub-pixel sweeping microscopy technique for high-resolution, wide field-of-view imaging.
Employing a focused near-infrared laser beam for microactuator control (microvalves and micropump).

Main Results:

Successful operation of laser-actuated microvalves and a micropump within the microfluidic channels.
Real-time, high-resolution imaging of biological processes on-chip.
Demonstration of cell-drug interaction assessment and cell growth monitoring within an incubator.

Conclusions:

The integrated system provides a simple, robust, and highly compact solution for microfluidic analysis.
Laser-actuated microfluidics combined with chip-scale microscopy advances biomedical and bioscience research.
This technology enables high-throughput analysis with minimal external connections.